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50 Commits

Author SHA1 Message Date
Jerome Petazzoni
8ef6219295 fix-redirects.sh: adding forced redirect 2020-04-07 16:48:42 -05:00
Bridget Kromhout
346ce0e15c Merge pull request #304 from bridgetkromhout/devopsdaysmsp2018
testing changes for 90min
2018-07-10 18:03:16 -05:00
Bridget Kromhout
964d936435 Merge branch 'devopsdaysmsp2018' into devopsdaysmsp2018 2018-07-10 07:47:09 -05:00
Bridget Kromhout
546d9a2986 Testing redirect 2018-07-10 07:45:55 -05:00
Bridget Kromhout
8e5d27b185 changing redirects back 2018-07-10 07:40:49 -05:00
Bridget Kromhout
e8d9e94b72 First pass at edits for 90min workshop 2018-07-10 07:37:39 -05:00
Bridget Kromhout
ca980de2fd Merge branch 'master' of github.com:bridgetkromhout/container.training into devopsdaysmsp2018 2018-07-10 07:36:05 -05:00
Bridget Kromhout
4b2b5ff7e4 Merge pull request #303 from jpetazzo/master
bringing branch up to date
2018-07-10 07:34:08 -05:00
Bridget Kromhout
ee2b20926c Merge pull request #302 from bridgetkromhout/version-1.11.0
Version bump
2018-07-10 06:18:30 -05:00
Bridget Kromhout
96a76d2a19 Version bump 2018-07-10 06:17:07 -05:00
Bridget Kromhout
78ac91fcd5 Merge pull request #300 from bridgetkromhout/add-msp
Adding MSP 2018
2018-07-10 05:46:23 -05:00
Bridget Kromhout
971b5b0e6d Let's not link quite yet 2018-07-10 05:45:22 -05:00
Bridget Kromhout
3393563498 Adding MSP 2018 2018-07-06 16:11:37 -05:00
Bridget Kromhout
64fb407e8c Merge pull request #299 from bridgetkromhout/devopsdaysmsp2018
devopsdays MSP 2018-specific stuff
2018-07-06 16:04:20 -05:00
Bridget Kromhout
ea4f46599d Adding devopsdays MSP 2018 2018-07-06 16:02:02 -05:00
Bridget Kromhout
94483ebfec Merge pull request #298 from jpetazzo/improve-index-format
Switch to two-line format since our titles are so long
2018-07-06 15:43:01 -05:00
Jerome Petazzoni
db5d5878f5 Switch to two-line format since our titles are so long 2018-07-03 10:47:41 -05:00
ctas582
2585daac9b Force rng to be single threaded (#293) 2018-06-28 08:20:54 -05:00
Bridget Kromhout
21043108b3 Merge pull request #296 from bridgetkromhout/version-up
Version bump
2018-06-27 01:14:06 -05:00
Bridget Kromhout
65faa4507c Version bump 2018-06-27 08:12:40 +02:00
Bridget Kromhout
644f2b9c7a Merge pull request #295 from bridgetkromhout/add-slides-ams
Adding slides link for ams
2018-06-26 17:04:27 -05:00
Bridget Kromhout
dab9d9fb7e Adding slides link 2018-06-27 00:03:18 +02:00
Diego Quintana
139757613b Update Container_Networking_Basics.md
Added needed single quotes. I've also moved `nginx` to the end of the line, to follow a more consistent syntax  (`options` before `name|id`).

```
Usage:	docker inspect [OPTIONS] NAME|ID [NAME|ID...]

Return low-level information on Docker objects

Options:
  -f, --format string   Format the output using the given Go template
  -s, --size            Display total file sizes if the type is container
      --type string     Return JSON for specified type
```
2018-06-22 10:58:26 -05:00
Bridget Kromhout
10eed2c1c7 Merge pull request #288 from ctas582/typos
Correct typos
2018-06-22 09:21:56 -05:00
ctas582
c4fa75a1da Correct typos 2018-06-21 15:00:36 +01:00
ctas582
847140560f Correct typo 2018-06-21 14:16:05 +01:00
ctas582
1dc07c33ab Correct typos 2018-06-20 11:19:28 +01:00
Bridget Kromhout
4fc73d95c0 Merge pull request #285 from bridgetkromhout/vupdate
Updating version
2018-06-12 10:14:21 -07:00
Bridget Kromhout
690ed55953 Updating version 2018-06-12 10:12:04 -07:00
Bridget Kromhout
16a5809518 Merge pull request #284 from bridgetkromhout/add-vel-2day
Adding Erik and Brian's two-day Velocity training to the front page
2018-06-12 09:01:32 -07:00
Bridget Kromhout
0fed34600b Adding Erik and Brian's two-day 2018-06-12 08:55:53 -07:00
Jerome Petazzoni
2d95f4177a Remove extraneous python invocation 2018-06-12 04:25:00 -05:00
Bridget Kromhout
e9d1db56fa Adding VelNY bootcamp (#283)
* Adding VelNY bootcamp

* Colon not good here
2018-06-12 04:09:54 -05:00
Bridget Kromhout
a076a766a9 Merge pull request #282 from bridgetkromhout/reorder
Reordering upcoming events
2018-06-11 09:47:57 -07:00
Bridget Kromhout
be3c78bf54 Reordering 2018-06-11 09:40:30 -07:00
Bridget Kromhout
5bb6b8e2ab Merge pull request #281 from bridgetkromhout/add-velocity-sj-2018
Adding Velocity SJ 2018
2018-06-11 09:08:35 -07:00
Bridget Kromhout
f79193681d Adding Velocity SJ 2018 2018-06-11 08:53:53 -07:00
Bridget Kromhout
379ae69db5 Merge pull request #277 from bridgetkromhout/rollout-failure
Clarifying rollout failure via dashboard
2018-06-11 08:34:36 -07:00
Jerome Petazzoni
cde89f50a2 Add mention to skip slide if dashboard isn't deployed 2018-06-10 17:07:56 -05:00
Bridget Kromhout
98563ba1ce Clarifying rollout failure via dashboard 2018-06-04 20:58:57 -05:00
Bridget Kromhout
99bf8cc39f Merge pull request #271 from jpetazzo/new-index-generator
Replace index.html with a generator
2018-06-05 02:13:27 +02:00
Bridget Kromhout
ea642cf90e Merge pull request #274 from bridgetkromhout/eng-v
bumping version
2018-06-04 23:28:48 +02:00
Bridget Kromhout
a7d89062cf Bumping engine version 2018-06-04 15:43:30 -05:00
Bridget Kromhout
564e4856b4 Merge branch 'master' of https://github.com/jpetazzo/container.training 2018-06-04 14:41:07 -05:00
Bridget Kromhout
011cd08af3 Merge pull request #269 from jpetazzo/kubectlproxy
Show how to access internal services with kubectl proxy
2018-06-04 21:40:40 +02:00
Jerome Petazzoni
c86ef7de45 Add 'past workshops' page and backfill 2016-2017 workshops 2018-06-03 09:55:43 -05:00
Jerome Petazzoni
3d7ed3a3f7 Clarify how to stop kubectl proxy 2018-06-03 05:10:48 -05:00
Jerome Petazzoni
2cb06edc2d Replace index.html with a generator
The events are now listend in index.yaml, and generated
with index.py. The latter is called automatically by
build.sh.

The list of events has been slightly improved:
- we only show the last 5 past events
- video recordings now get a section of their own
2018-05-31 14:22:23 -05:00
Jerome Petazzoni
4213aba76e Show how to access internal services with kubectl proxy 2018-05-29 05:47:27 -05:00
Bridget Kromhout
c575cb9cd5 New events (and old event to past) 2018-05-23 10:18:02 -05:00
57 changed files with 1125 additions and 1017 deletions

2
.gitignore vendored
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@@ -8,4 +8,6 @@ prepare-vms/settings.yaml
prepare-vms/tags
slides/*.yml.html
slides/autopilot/state.yaml
slides/index.html
slides/past.html
node_modules

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@@ -28,5 +28,5 @@ def rng(how_many_bytes):
if __name__ == "__main__":
app.run(host="0.0.0.0", port=80)
app.run(host="0.0.0.0", port=80, threaded=False)

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@@ -1,13 +1,17 @@
{# Feel free to customize or override anything in there! #}
{%- set url = "juin2018.container.training" -%}
{%- set url = "http://container.training/" -%}
{%- set pagesize = 12 -%}
{%- if clustersize == 1 -%}
{%- set cluster_or_machine = "votre VM" -%}
{%- set machine_is_or_machines_are = "Votre VM" -%}
{%- set workshop_name = "Docker workshop" -%}
{%- set cluster_or_machine = "machine" -%}
{%- set this_or_each = "this" -%}
{%- set machine_is_or_machines_are = "machine is" -%}
{%- set image_src = "https://s3-us-west-2.amazonaws.com/www.breadware.com/integrations/docker.png" -%}
{%- else -%}
{%- set cluster_or_machine = "votre cluster" -%}
{%- set machine_is_or_machines_are = "Votre cluster" -%}
{%- set workshop_name = "orchestration workshop" -%}
{%- set cluster_or_machine = "cluster" -%}
{%- set this_or_each = "each" -%}
{%- set machine_is_or_machines_are = "machines are" -%}
{%- set image_src_swarm = "https://cdn.wp.nginx.com/wp-content/uploads/2016/07/docker-swarm-hero2.png" -%}
{%- set image_src_kube = "https://avatars1.githubusercontent.com/u/13629408" -%}
{%- set image_src = image_src_swarm -%}
@@ -71,9 +75,9 @@ img {
<div>
<p>
Voici les informations pour vous connecter à
{{ cluster_or_machine }} pour cette formation.
Vous pouvez vous connecter avec n'importe quel client SSH.
Here is the connection information to your very own
{{ cluster_or_machine }} for this {{ workshop_name }}.
You can connect to {{ this_or_each }} VM with any SSH client.
</p>
<p>
<img src="{{ image_src }}" />
@@ -86,14 +90,14 @@ img {
</p>
<p>
{{ machine_is_or_machines_are }}:
Your {{ machine_is_or_machines_are }}:
<table>
{% for node in cluster %}
<tr><td>node{{ loop.index }}:</td><td>{{ node }}</td></tr>
{% endfor %}
</table>
</p>
<p>Les slides sont à l'adresse suivante :
<p>You can find the slides at:
<center>{{ url }}</center>
</p>
</div>

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@@ -48,7 +48,7 @@ _cmd_cards() {
rm -f ips.html ips.pdf
# This will generate two files in the base dir: ips.pdf and ips.html
python lib/ips-txt-to-html.py $SETTINGS
lib/ips-txt-to-html.py $SETTINGS
for f in ips.html ips.pdf; do
# Remove old versions of cards if they exist

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@@ -7,7 +7,7 @@ clustersize: 1
cards_template: cards.html
# Use "Letter" in the US, and "A4" everywhere else
paper_size: A4
paper_size: Letter
# Feel free to reduce this if your printer can handle it
paper_margin: 0.2in

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@@ -1,24 +0,0 @@
# This file is passed by trainer-cli to scripts/ips-txt-to-html.py
# Number of VMs per cluster
clustersize: 5
# Jinja2 template to use to generate ready-to-cut cards
cards_template: cards.html
# Use "Letter" in the US, and "A4" everywhere else
paper_size: A4
# Feel free to reduce this if your printer can handle it
paper_margin: 0.2in
# Note: paper_size and paper_margin only apply to PDF generated with pdfkit.
# If you print (or generate a PDF) using ips.html, they will be ignored.
# (The equivalent parameters must be set from the browser's print dialog.)
# This can be "test" or "stable"
engine_version: stable
# These correspond to the version numbers visible on their respective GitHub release pages
compose_version: 1.21.1
machine_version: 0.14.0

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@@ -1 +1,2 @@
/ /deck.yml.html
/ /kube-90min.yml.html 200!

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@@ -1,6 +1,8 @@
#!/bin/sh
set -e
case "$1" in
once)
./index.py
for YAML in *.yml; do
./markmaker.py $YAML > $YAML.html || {
rm $YAML.html
@@ -15,6 +17,7 @@ once)
;;
forever)
set +e
# check if entr is installed
if ! command -v entr >/dev/null; then
echo >&2 "First install 'entr' with apt, brew, etc."

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@@ -35,7 +35,7 @@ class: extra-details
- This slide has a little magnifying glass in the top left corner
- This magnifiying glass indicates slides that provide extra details
- This magnifying glass indicates slides that provide extra details
- Feel free to skip them if:

View File

@@ -1,41 +1,4 @@
# Orchestration
- Now that we have learned some container knowledge,
we can get started with orchestration!
- Note: all that is needed to follow along the orchestration part is some *basic* Docker knowledge, i.e.:
- `docker run`, `docker ps`, `docker build`
- ideally, you know how to write a Dockerfile and build it
<br/>
(even if it's a `FROM` line and a couple of `RUN` commands)
- It's totally OK if you are not a Docker expert!
---
class: title
*Tell me and I forget.*
<br/>
*Teach me and I remember.*
<br/>
*Involve me and I learn.*
Misattributed to Benjamin Franklin
[(Probably inspired by Chinese Confucian philosopher Xunzi)](https://www.barrypopik.com/index.php/new_york_city/entry/tell_me_and_i_forget_teach_me_and_i_may_remember_involve_me_and_i_will_lear/)
---
## Hands-on sections
- Of course, we have tons of exercises and hands-on labs
- We are going to build, ship, and run containers!
- You are invited to reproduce all the demos
## Hands-on
- All hands-on sections are clearly identified, like the gray rectangle below
@@ -45,55 +8,10 @@ Misattributed to Benjamin Franklin
- Go to @@SLIDES@@ to view these slides
- Join the chat room: @@CHAT@@
<!-- ```open @@SLIDES@@``` -->
]
---
class: in-person
## Where are we going to run our containers?
---
class: in-person, pic
![You get a cluster](images/you-get-a-cluster.jpg)
---
class: in-person
## You get a cluster of cloud VMs
- Each person gets a private cluster of cloud VMs (not shared with anybody else)
- They'll remain up for the duration of the workshop
- You should have **another** little card with login+password+IP addresses
(But that one has 5 nodes instead of only 1)
- You can automatically SSH from one VM to another
- The nodes have aliases: `node1`, `node2`, etc.
---
class: in-person
## Why don't we run containers locally?
- Installing that stuff can be hard on some machines
(32 bits CPU or OS... Laptops without administrator access... etc.)
- *"The whole team downloaded all these container images from the WiFi!
<br/>... and it went great!"* (Literally no-one ever)
- All you need is a computer (or even a phone or tablet!), with:
- an internet connection
@@ -106,201 +24,18 @@ class: in-person
class: in-person
## SSH clients
- On Linux, OS X, FreeBSD... you are probably all set
- On Windows, get one of these:
- [putty](http://www.putty.org/)
- Microsoft [Win32 OpenSSH](https://github.com/PowerShell/Win32-OpenSSH/wiki/Install-Win32-OpenSSH)
- [Git BASH](https://git-for-windows.github.io/)
- [MobaXterm](http://mobaxterm.mobatek.net/)
- On Android, [JuiceSSH](https://juicessh.com/)
([Play Store](https://play.google.com/store/apps/details?id=com.sonelli.juicessh))
works pretty well
- Nice-to-have: [Mosh](https://mosh.org/) instead of SSH, if your internet connection tends to lose packets
---
class: in-person, extra-details
## What is this Mosh thing?
*You don't have to use Mosh or even know about it to follow along.
<br/>
We're just telling you about it because some of us think it's cool!*
- Mosh is "the mobile shell"
- It is essentially SSH over UDP, with roaming features
- It retransmits packets quickly, so it works great even on lossy connections
(Like hotel or conference WiFi)
- It has intelligent local echo, so it works great even in high-latency connections
(Like hotel or conference WiFi)
- It supports transparent roaming when your client IP address changes
(Like when you hop from hotel to conference WiFi)
---
class: in-person, extra-details
## Using Mosh
- To install it: `(apt|yum|brew) install mosh`
- It has been pre-installed on the VMs that we are using
- To connect to a remote machine: `mosh user@host`
(It is going to establish an SSH connection, then hand off to UDP)
- It requires UDP ports to be open
(By default, it uses a UDP port between 60000 and 61000)
---
class: in-person
## Connecting to our lab environment
.exercise[
- Log into the first VM (`node1`) with your SSH client
<!--
```bash
for N in $(awk '/\Wnode/{print $2}' /etc/hosts); do
ssh -o StrictHostKeyChecking=no $N true
done
```
```bash
if which kubectl; then
kubectl get all -o name | grep -v service/kubernetes | xargs -rn1 kubectl delete
fi
```
-->
- Check that you can SSH (without password) to `node2`:
```bash
ssh node2
```
- Type `exit` or `^D` to come back to `node1`
<!-- ```bash exit``` -->
]
If anything goes wrong — ask for help!
---
## Doing or re-doing the workshop on your own?
- Use something like
[Play-With-Docker](http://play-with-docker.com/) or
[Play-With-Kubernetes](https://medium.com/@marcosnils/introducing-pwk-play-with-k8s-159fcfeb787b)
Zero setup effort; but environment are short-lived and
might have limited resources
- Create your own cluster (local or cloud VMs)
Small setup effort; small cost; flexible environments
- Create a bunch of clusters for you and your friends
([instructions](https://@@GITREPO@@/tree/master/prepare-vms))
Bigger setup effort; ideal for group training
---
class: self-paced
## Get your own Docker nodes
- If you already have some Docker nodes: great!
- If not: let's get some thanks to Play-With-Docker
.exercise[
- Go to http://www.play-with-docker.com/
- Log in
- Create your first node
<!-- ```open http://www.play-with-docker.com/``` -->
]
You will need a Docker ID to use Play-With-Docker.
(Creating a Docker ID is free.)
---
## We will (mostly) interact with node1 only
*These remarks apply only when using multiple nodes, of course.*
- Unless instructed, **all commands must be run from the first VM, `node1`**
- We will only checkout/copy the code on `node1`
- During normal operations, we do not need access to the other nodes
- If we had to troubleshoot issues, we would use a combination of:
- SSH (to access system logs, daemon status...)
- Docker API (to check running containers and container engine status)
---
## Terminals
Once in a while, the instructions will say:
<br/>"Open a new terminal."
There are multiple ways to do this:
- create a new window or tab on your machine, and SSH into the VM;
- use screen or tmux on the VM and open a new window from there.
You are welcome to use the method that you feel the most comfortable with.
---
## Tmux cheatsheet
[Tmux](https://en.wikipedia.org/wiki/Tmux) is a terminal multiplexer like `screen`.
*You don't have to use it or even know about it to follow along.
<br/>
But some of us like to use it to switch between terminals.
<br/>
It has been preinstalled on your workshop nodes.*
- Ctrl-b c → creates a new window
- Ctrl-b n → go to next window
- Ctrl-b p → go to previous window
- Ctrl-b " → split window top/bottom
- Ctrl-b % → split window left/right
- Ctrl-b Alt-1 → rearrange windows in columns
- Ctrl-b Alt-2 → rearrange windows in rows
- Ctrl-b arrows → navigate to other windows
- Ctrl-b d → detach session
- tmux attach → reattach to session

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@@ -94,61 +94,6 @@ class: extra-details
---
## Service discovery in container-land
- We do not hard-code IP addresses in the code
- We do not hard-code FQDN in the code, either
- We just connect to a service name, and container-magic does the rest
(And by container-magic, we mean "a crafty, dynamic, embedded DNS server")
---
## Example in `worker/worker.py`
```python
redis = Redis("`redis`")
def get_random_bytes():
r = requests.get("http://`rng`/32")
return r.content
def hash_bytes(data):
r = requests.post("http://`hasher`/",
data=data,
headers={"Content-Type": "application/octet-stream"})
```
(Full source code available [here](
https://@@GITREPO@@/blob/8279a3bce9398f7c1a53bdd95187c53eda4e6435/dockercoins/worker/worker.py#L17
))
---
class: extra-details
## Links, naming, and service discovery
- Containers can have network aliases (resolvable through DNS)
- Compose file version 2+ makes each container reachable through its service name
- Compose file version 1 did require "links" sections
- Network aliases are automatically namespaced
- you can have multiple apps declaring and using a service named `database`
- containers in the blue app will resolve `database` to the IP of the blue database
- containers in the green app will resolve `database` to the IP of the green database
---
## What's this application?
--

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@@ -11,5 +11,11 @@ class: title, in-person
@@TITLE@@<br/></br>
.footnote[
**Be kind to the WiFi!**<br/>
<!-- *Use the 5G network.* -->
*Don't use your hotspot.*<br/>
*Don't stream videos or download big files during the workshop.*<br/>
*Thank you!*
**Slides: @@SLIDES@@**
]

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@@ -1,114 +0,0 @@
title: |
Introduction
to Containers
and Orchestration
#chat: "[Slack](https://dockercommunity.slack.com/messages/C7GKACWDV)"
chat: "[Gitter](https://gitter.im/jpetazzo/training-20180605-montpellier)"
gitrepo: github.com/jpetazzo/container.training
slides: http://juin2018.container.training/
exclude:
- self-paced
chapters:
- common/title.md
- logistics.md
- intro/intro.md
- common/about-slides.md
- common/toc.md
- - intro/Docker_Overview.md
- intro/Docker_History.md
- intro/Training_Environment.md
- intro/Installing_Docker.md
- intro/First_Containers.md
- intro/Background_Containers.md
- intro/Start_And_Attach.md
- - intro/Initial_Images.md
- intro/Building_Images_Interactively.md
- intro/Building_Images_With_Dockerfiles.md
- intro/Cmd_And_Entrypoint.md
- intro/Copying_Files_During_Build.md
- - |
# Exercise — writing Dockerfiles
Let's write Dockerfiles for an existing application!
The code is at: https://bitbucket.org/jgarrouste/k8s-wordsmith-exo/src/master/
- intro/Multi_Stage_Builds.md
- intro/Publishing_To_Docker_Hub.md
- intro/Dockerfile_Tips.md
- |
# Exercise — writing better Dockerfiles
Let's update our Dockerfiles to leverage multi-stage builds!
The code is at: https://bitbucket.org/jgarrouste/k8s-wordsmith-exo/src/master/
Use a different tag for these images, so that we can compare their sizes.
What's the size difference between single-stage and multi-stage builds?
- - intro/Naming_And_Inspecting.md
- intro/Labels.md
- intro/Getting_Inside.md
- intro/Resource_Limits.md
- - intro/Namespaces_Cgroups.md
- intro/Copy_On_Write.md
#- intro/Containers_From_Scratch.md
- - intro/Container_Networking_Basics.md
- intro/Network_Drivers.md
- intro/Container_Network_Model.md
#- intro/Connecting_Containers_With_Links.md
- intro/Ambassadors.md
- - intro/Local_Development_Workflow.md
- intro/Working_With_Volumes.md
- intro/Compose_For_Dev_Stacks.md
- |
# Exercise — writing a Compose file
Let's write a Compose file for the wordsmith app!
The code is at: https://bitbucket.org/jgarrouste/k8s-wordsmith-exo/src/master/
- - intro/CI_Pipeline.md
- intro/Docker_Machine.md
- intro/Advanced_Dockerfiles.md
- intro/Application_Configuration.md
- intro/Logging.md
- - intro/Container_Engines.md
- intro/Ecosystem.md
- intro/Orchestration_Overview.md
- intro/links.md
- - common/prereqs.md
- kube/versions-k8s.md
- common/sampleapp.md
- common/composescale.md
- common/composedown.md
- kube/concepts-k8s.md
- common/declarative.md
- kube/declarative.md
- kube/kubenet.md
- kube/kubectlget.md
- kube/setup-k8s.md
- - kube/kubectlrun.md
- kube/kubectlexpose.md
- kube/ourapponkube.md
- - kube/dashboard.md
- |
# Exercise — running wordsmith on Kubernetes
Now that we know how to deploy containers on Kubernetes, let's deploy the wordsmith app on our cluster!
The code is at: https://bitbucket.org/jgarrouste/k8s-wordsmith-exo/src/master/
- kube/kubectlscale.md
- kube/daemonset.md
- kube/rollout.md
- - kube/logs-cli.md
- kube/logs-centralized.md
- kube/helm.md
- kube/namespaces.md
- kube/whatsnext.md
- kube/links.md
- common/thankyou.md

59
slides/index.css Normal file
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@@ -0,0 +1,59 @@
body {
background-image: url("images/container-background.jpg");
max-width: 1024px;
margin: 0 auto;
}
table {
font-size: 20px;
font-family: sans-serif;
background: white;
width: 100%;
height: 100%;
padding: 20px;
}
.header {
font-size: 300%;
font-weight: bold;
}
.title {
font-size: 150%;
font-weight: bold;
}
.details {
font-size: 80%;
font-style: italic;
}
td {
padding: 1px;
height: 1em;
}
td.spacer {
height: unset;
}
td.footer {
padding-top: 80px;
height: 100px;
}
td.title {
border-bottom: thick solid black;
padding-bottom: 2px;
padding-top: 20px;
}
a {
text-decoration: none;
}
a:hover {
background: yellow;
}
a.attend:after {
content: "📅 attend";
}
a.slides:after {
content: "📚 slides";
}
a.chat:after {
content: "💬 chat";
}
a.video:after {
content: "📺 video";
}

140
slides/index.py Executable file
View File

@@ -0,0 +1,140 @@
#!/usr/bin/env python2
# coding: utf-8
TEMPLATE="""<html>
<head>
<title>{{ title }}</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<div class="main">
<table>
<tr><td class="header" colspan="3">{{ title }}</td></tr>
{% if coming_soon %}
<tr><td class="title" colspan="3">Coming soon near you</td></tr>
{% for item in coming_soon %}
<tr>
<td>{{ item.title }}</td>
<td>{% if item.slides %}<a class="slides" href="{{ item.slides }}" />{% endif %}</td>
<td><a class="attend" href="{{ item.attend }}" /></td>
</tr>
<tr>
<td class="details">Scheduled {{ item.prettydate }} at {{ item.event }} in {{item.city }}.</td>
</tr>
{% endfor %}
{% endif %}
{% if past_workshops %}
<tr><td class="title" colspan="3">Past workshops</td></tr>
{% for item in past_workshops[:5] %}
<tr>
<td>{{ item.title }}</td>
<td><a class="slides" href="{{ item.slides }}" /></td>
<td>{% if item.video %}<a class="video" href="{{ item.video }}" />{% endif %}</td>
</tr>
<tr>
<td class="details">Delivered {{ item.prettydate }} at {{ item.event }} in {{item.city }}.</td>
</tr>
{% endfor %}
{% if past_workshops[5:] %}
<tr>
<td>... and at least <a href="past.html">{{ past_workshops[5:] | length }} more</a>.</td>
</tr>
{% endif %}
{% endif %}
{% if recorded_workshops %}
<tr><td class="title" colspan="3">Recorded workshops</td></tr>
{% for item in recorded_workshops %}
<tr>
<td>{{ item.title }}</td>
<td><a class="slides" href="{{ item.slides }}" /></td>
<td><a class="video" href="{{ item.video }}" /></td>
</tr>
<tr>
<td class="details">Delivered {{ item.prettydate }} at {{ item.event }} in {{item.city }}.</td>
</tr>
{% endfor %}
{% endif %}
{% if self_paced %}
<tr><td class="title" colspan="3">Self-paced tutorials</td></tr>
{% for item in self_paced %}
<tr>
<td>{{ item.title }}</td>
<td><a class="slides" href="{{ item.slides }}" /></td>
</tr>
{% endfor %}
{% endif %}
{% if all_past_workshops %}
<tr><td class="title" colspan="3">Past workshops</td></tr>
{% for item in all_past_workshops %}
<tr>
<td>{{ item.title }}</td>
<td><a class="slides" href="{{ item.slides }}" /></td>
{% if item.video %}
<td><a class="video" href="{{ item.video }}" /></td>
{% endif %}
</tr>
<tr>
<td class="details">Delivered {{ item.prettydate }} at {{ item.event }} in {{item.city }}.</td>
</tr>
{% endfor %}
{% endif %}
<tr><td class="spacer"></td></tr>
<tr>
<td class="footer">
Maintained by Jérôme Petazzoni (<a href="https://twitter.com/jpetazzo">@jpetazzo</a>) and <a href="https://github.com/jpetazzo/container.training/graphs/contributors">contributors</a>.
</td>
</tr>
</table>
</div>
</body>
</html>""".decode("utf-8")
import datetime
import jinja2
import yaml
items = yaml.load(open("index.yaml"))
for item in items:
if "date" in item:
date = item["date"]
suffix = {
1: "st", 2: "nd", 3: "rd",
21: "st", 22: "nd", 23: "rd",
31: "st"}.get(date.day, "th")
item["prettydate"] = date.strftime("%B %e{}, %Y").format(suffix)
today = datetime.date.today()
coming_soon = [i for i in items if i.get("date") and i["date"] >= today]
coming_soon.sort(key=lambda i: i["date"])
past_workshops = [i for i in items if i.get("date") and i["date"] < today]
past_workshops.sort(key=lambda i: i["date"], reverse=True)
self_paced = [i for i in items if not i.get("date")]
recorded_workshops = [i for i in items if i.get("video")]
template = jinja2.Template(TEMPLATE)
with open("index.html", "w") as f:
f.write(template.render(
title="Container Training",
coming_soon=coming_soon,
past_workshops=past_workshops,
self_paced=self_paced,
recorded_workshops=recorded_workshops
).encode("utf-8"))
with open("past.html", "w") as f:
f.write(template.render(
title="Container Training",
all_past_workshops=past_workshops
).encode("utf-8"))

361
slides/index.yaml Normal file
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@@ -0,0 +1,361 @@
- date: 2018-07-12
city: Minneapolis, MN
country: us
event: devopsdays Minneapolis
title: Kubernetes 101
speaker: "ashleymcnamara, bketelsen"
attend: https://www.devopsdays.org/events/2018-minneapolis/registration/
- date: 2018-10-01
city: New York, NY
country: us
event: Velocity
title: Kubernetes 101
speaker: bridgetkromhout
attend: https://conferences.oreilly.com/velocity/vl-ny/public/schedule/detail/70102
- date: 2018-09-30
city: New York, NY
country: us
event: Velocity
title: Kubernetes Bootcamp - Deploying and Scaling Microservices
speaker: jpetazzo
attend: https://conferences.oreilly.com/velocity/vl-ny/public/schedule/detail/69875
- date: 2018-07-17
city: Portland, OR
country: us
event: OSCON
title: Kubernetes 101
speaker: bridgetkromhout
attend: https://conferences.oreilly.com/oscon/oscon-or/public/schedule/detail/66287
- date: 2018-06-27
city: Amsterdam
country: nl
event: devopsdays
title: Kubernetes 101
speaker: bridgetkromhout
slides: https://devopsdaysams2018.container.training
attend: https://www.devopsdays.org/events/2018-amsterdam/registration/
- date: 2018-06-12
city: San Jose, CA
country: us
event: Velocity
title: Kubernetes 101
speaker: bridgetkromhout
slides: https://velocitysj2018.container.training
attend: https://conferences.oreilly.com/velocity/vl-ca/public/schedule/detail/66286
- date: 2018-06-12
city: San Jose, CA
country: us
event: Velocity
title: "Kubernetes two-day kickstart: Deploying and Scaling Microservices with Kubernetes"
speaker: "bketelsen, erikstmartin"
slides: http://kubernetes.academy/kube-fullday.yml.html#1
attend: https://conferences.oreilly.com/velocity/vl-ca/public/schedule/detail/66932
- date: 2018-06-11
city: San Jose, CA
country: us
event: Velocity
title: "Kubernetes two-day kickstart: Introduction to Docker and Containers"
speaker: "bketelsen, erikstmartin"
slides: http://kubernetes.academy/intro-fullday.yml.html#1
attend: https://conferences.oreilly.com/velocity/vl-ca/public/schedule/detail/66932
- date: 2018-05-17
city: Virginia Beach, FL
country: us
event: Revolution Conf
title: Docker 101
speaker: bretfisher
slides: https://revconf18.bretfisher.com
- date: 2018-05-10
city: Saint Paul, MN
country: us
event: NDC Minnesota
title: Kubernetes 101
slides: https://ndcminnesota2018.container.training
- date: 2018-05-08
city: Budapest
country: hu
event: CRAFT
title: Swarm Orchestration
slides: https://craftconf18.bretfisher.com
- date: 2018-04-27
city: Chicago, IL
country: us
event: GOTO
title: Swarm Orchestration
slides: https://gotochgo18.bretfisher.com
- date: 2018-04-24
city: Chicago, IL
country: us
event: GOTO
title: Kubernetes 101
slides: http://gotochgo2018.container.training/
- date: 2018-04-11
city: Paris
country: fr
title: Introduction aux conteneurs
lang: fr
slides: https://avril2018.container.training/intro.yml.html
- date: 2018-04-13
city: Paris
country: fr
lang: fr
title: Introduction à l'orchestration
slides: https://avril2018.container.training/kube.yml.html
- date: 2018-04-06
city: Sacramento, CA
country: us
event: MuraCon
title: Docker 101
slides: https://muracon18.bretfisher.com
- date: 2018-03-27
city: Santa Clara, CA
country: us
event: SREcon Americas
title: Kubernetes 101
slides: http://srecon2018.container.training/
- date: 2018-03-27
city: Bergen
country: no
event: Boosterconf
title: Kubernetes 101
slides: http://boosterconf2018.container.training/
- date: 2018-02-22
city: San Francisco, CA
country: us
event: IndexConf
title: Kubernetes 101
slides: http://indexconf2018.container.training/
#attend: https://developer.ibm.com/indexconf/sessions/#!?id=5474
- date: 2017-11-17
city: San Francisco, CA
country: us
event: QCON SF
title: Orchestrating Microservices with Docker Swarm
slides: http://qconsf2017swarm.container.training/
- date: 2017-11-16
city: San Francisco, CA
country: us
event: QCON SF
title: Introduction to Docker and Containers
slides: http://qconsf2017intro.container.training/
video: https://www.youtube.com/playlist?list=PLBAFXs0YjviLgqTum8MkspG_8VzGl6C07
- date: 2017-10-30
city: San Franciso, CA
country: us
event: LISA
title: (M7) Getting Started with Docker and Containers
slides: http://lisa17m7.container.training/
- date: 2017-10-31
city: San Franciso, CA
country: us
event: LISA
title: (T9) Build, Ship, and Run Microservices on a Docker Swarm Cluster
slides: http://lisa17t9.container.training/
- date: 2017-10-26
city: Prague
country: cz
event: Open Source Summit Europe
title: Deploying and scaling microservices with Docker and Kubernetes
slides: http://osseu17.container.training/
video: https://www.youtube.com/playlist?list=PLBAFXs0YjviLrsyydCzxWrIP_1-wkcSHS
- date: 2017-10-16
city: Copenhagen
country: dk
event: DockerCon
title: Swarm from Zero to Hero
slides: http://dc17eu.container.training/
- date: 2017-10-16
city: Copenhagen
country: dk
event: DockerCon
title: Orchestration for Advanced Users
slides: https://www.bretfisher.com/dockercon17eu
- date: 2017-07-25
city: Minneapolis, MN
country: us
event: devopsdays
title: Deploying & Scaling microservices with Docker Swarm
video: https://www.youtube.com/watch?v=DABbqyJeG_E
- date: 2017-06-12
city: Berlin
country: de
event: DevOpsCon
title: Deploying and scaling containerized Microservices with Docker and Swarm
- date: 2017-05-18
city: Portland, OR
country: us
event: PyCon
title: Deploy and scale containers with Docker native, open source orchestration
video: https://www.youtube.com/watch?v=EuzoEaE6Cqs
- date: 2017-05-08
city: Austin, TX
country: us
event: OSCON
title: Deploying and scaling applications in containers with Docker
- date: 2017-05-04
city: Chicago, IL
country: us
event: GOTO
title: Container deployment, scaling, and orchestration with Docker Swarm
- date: 2017-04-17
city: Austin, TX
country: us
event: DockerCon
title: Orchestration Workshop
- date: 2017-03-22
city: San Jose, CA
country: us
event: Devoxx
title: Container deployment, scaling, and orchestration with Docker Swarm
- date: 2017-03-03
city: Pasadena, CA
country: us
event: SCALE
title: Container deployment, scaling, and orchestration with Docker Swarm
- date: 2016-12-06
city: Boston, MA
country: us
event: LISA
title: Deploying and Scaling Applications with Docker Swarm
slides: http://lisa16t1.container.training/
video: https://www.youtube.com/playlist?list=PLBAFXs0YjviIDDhr8vIwCN1wkyNGXjbbc
- date: 2016-10-07
city: Berlin
country: de
event: LinuxCon
title: Orchestrating Containers in Production at Scale with Docker Swarm
- date: 2016-09-20
city: New York, NY
country: us
event: Velocity
title: Deployment and orchestration at scale with Docker
- date: 2016-08-25
city: Toronto
country: ca
event: LinuxCon
title: Orchestrating Containers in Production at Scale with Docker Swarm
- date: 2016-06-22
city: Seattle, WA
country: us
event: DockerCon
title: Orchestration Workshop
- date: 2016-05-29
city: Portland, OR
country: us
event: PyCon
title: Introduction to Docker and containers
slides: https://us.pycon.org/2016/site_media/media/tutorial_handouts/DockerSlides.pdf
video: https://www.youtube.com/watch?v=ZVaRK10HBjo
- date: 2016-05-17
city: Austin, TX
country: us
event: OSCON
title: Deployment and orchestration at scale with Docker Swarm
- date: 2016-04-27
city: Budapest
country: hu
event: CRAFT
title: Advanced Docker concepts and container orchestration
- date: 2016-04-22
city: Berlin
country: de
event: Neofonie
title: Orchestration Workshop
- date: 2016-04-05
city: Stockholm
country: se
event: Praqma
title: Orchestration Workshop
- date: 2016-03-22
city: Munich
country: de
event: Stylight
title: Orchestration Workshop
- date: 2016-03-11
city: London
country: uk
event: QCON
title: Containers in production with Docker Swarm
- date: 2016-02-19
city: Amsterdam
country: nl
event: Container Solutions
title: Orchestration Workshop
- date: 2016-02-15
city: Paris
country: fr
event: Zenika
title: Orchestration Workshop
- date: 2016-01-22
city: Pasadena, CA
country: us
event: SCALE
title: Advanced Docker concepts and container orchestration
#- date: 2015-11-10
# city: Washington DC
# country: us
# event: LISA
# title: Deploying and Scaling Applications with Docker Swarm
#2015-09-24-strangeloop
- title: Introduction to Docker and Containers
slides: intro-selfpaced.yml.html
- title: Container Orchestration with Docker and Swarm
slides: swarm-selfpaced.yml.html
- title: Deploying and Scaling Microservices with Docker and Kubernetes
slides: kube-selfpaced.yml.html

View File

@@ -2,12 +2,12 @@ title: |
Introduction
to Containers
#chat: "[Slack](https://dockercommunity.slack.com/messages/C7GKACWDV)"
chat: "[Gitter](https://gitter.im/jpetazzo/training-20180605-montpellier)"
chat: "[Slack](https://dockercommunity.slack.com/messages/C7GKACWDV)"
#chat: "[Gitter](https://gitter.im/jpetazzo/workshop-yyyymmdd-city)"
gitrepo: github.com/jpetazzo/container.training
slides: http://juin2018.container.training/
slides: http://container.training/
exclude:
- self-paced
@@ -30,32 +30,12 @@ chapters:
- intro/Building_Images_With_Dockerfiles.md
- intro/Cmd_And_Entrypoint.md
- intro/Copying_Files_During_Build.md
- - |
# Exercise — writing Dockerfiles
Let's write Dockerfiles for an existing application!
The code is at: https://bitbucket.org/jgarrouste/k8s-wordsmith-exo/src/master/
- intro/Multi_Stage_Builds.md
- - intro/Multi_Stage_Builds.md
- intro/Publishing_To_Docker_Hub.md
- intro/Dockerfile_Tips.md
- |
# Exercise — writing better Dockerfiles
Let's update our Dockerfiles to leverage multi-stage builds!
The code is at: https://bitbucket.org/jgarrouste/k8s-wordsmith-exo/src/master/
Use a different tag for these images, so that we can compare their sizes.
What's the size difference between single-stage and multi-stage builds?
- - intro/Naming_And_Inspecting.md
- intro/Labels.md
- intro/Getting_Inside.md
- intro/Resource_Limits.md
- - intro/Namespaces_Cgroups.md
- intro/Copy_On_Write.md
#- intro/Containers_From_Scratch.md
- - intro/Container_Networking_Basics.md
- intro/Network_Drivers.md
- intro/Container_Network_Model.md
@@ -64,18 +44,14 @@ chapters:
- - intro/Local_Development_Workflow.md
- intro/Working_With_Volumes.md
- intro/Compose_For_Dev_Stacks.md
- |
# Exercise — writing a Compose file
Let's write a Compose file for the wordsmith app!
The code is at: https://bitbucket.org/jgarrouste/k8s-wordsmith-exo/src/master/
- - intro/CI_Pipeline.md
- intro/Docker_Machine.md
- intro/Advanced_Dockerfiles.md
- - intro/Advanced_Dockerfiles.md
- intro/Application_Configuration.md
- intro/Logging.md
- intro/Resource_Limits.md
- - intro/Namespaces_Cgroups.md
- intro/Copy_On_Write.md
#- intro/Containers_From_Scratch.md
- - intro/Container_Engines.md
- intro/Ecosystem.md
- intro/Orchestration_Overview.md

View File

@@ -355,7 +355,7 @@ class: extra-details
## Overriding the `ENTRYPOINT` instruction
The entry point can be overriden as well.
The entry point can be overridden as well.
```bash
$ docker run -it training/ls

View File

@@ -117,7 +117,7 @@ CONTAINER ID IMAGE ... CREATED STATUS ...
Many Docker commands will work on container IDs: `docker stop`, `docker rm`...
If we want to list only the IDs of our containers (without the other colums
If we want to list only the IDs of our containers (without the other columns
or the header line),
we can use the `-q` ("Quiet", "Quick") flag:

View File

@@ -1,3 +0,0 @@
# Building a CI pipeline
.center[![Demo](images/demo.jpg)]

View File

@@ -98,7 +98,7 @@ $ curl localhost:32768
* We can see that metadata with `docker inspect`:
```bash
$ docker inspect nginx --format {{.Config.ExposedPorts}}
$ docker inspect --format '{{.Config.ExposedPorts}}' nginx
map[80/tcp:{}]
```

View File

@@ -64,7 +64,7 @@ Create this Dockerfile.
## Testing our C program
* Create `hello.c` and `Dockerfile` in the same direcotry.
* Create `hello.c` and `Dockerfile` in the same directory.
* Run `docker build -t hello .` in this directory.

View File

@@ -30,7 +30,7 @@
## Environment variables
- Most of the tools (CLI, libraries...) connecting to the Docker API can use ennvironment variables.
- Most of the tools (CLI, libraries...) connecting to the Docker API can use environment variables.
- These variables are:
@@ -40,7 +40,7 @@
- `DOCKER_CERT_PATH` (path to the keypair and certificate to use for auth)
- `docker-machine env ...` will generate the variables needed to connect to an host.
- `docker-machine env ...` will generate the variables needed to connect to a host.
- `$(eval docker-machine env ...)` sets these variables in the current shell.
@@ -50,7 +50,7 @@
With `docker-machine`, we can:
- upgrade an host to the latest version of the Docker Engine,
- upgrade a host to the latest version of the Docker Engine,
- start/stop/restart hosts,

View File

@@ -176,7 +176,7 @@ $ docker run -d -v $(pwd):/src -P namer
* `namer` is the name of the image we will run.
* We don't specify a command to run because is is already set in the Dockerfile.
* We don't specify a command to run because it is already set in the Dockerfile.
Note: on Windows, replace `$(pwd)` with `%cd%` (or `${pwd}` if you use PowerShell).

View File

@@ -102,7 +102,7 @@ Cons:
- not very readable
- some unnecessary files might still remain if the cleanup is not torough
- some unnecessary files might still remain if the cleanup is not thorough
- that layer is expensive (slow to build)

View File

@@ -144,7 +144,7 @@ class: extra-details, deep-dive
- Also allows to set the NIS domain.
(If you dont' know what a NIS domain is, you don't have to worry about it!)
(If you don't know what a NIS domain is, you don't have to worry about it!)
- If you're wondering: UTS = UNIX time sharing.

View File

@@ -36,10 +36,6 @@ individual Docker VM.*
- It comes pre-loaded with Docker and some other useful tools.
- **Keep the card with your VM IP address!**
**(We will be in a different room tomorrow.)**
---
## What *is* Docker?

52
slides/kube-90min.yml Normal file
View File

@@ -0,0 +1,52 @@
title: |
Kubernetes 101
#chat: "[Slack](https://dockercommunity.slack.com/messages/C7GKACWDV)"
#chat: "[Gitter](https://gitter.im/jpetazzo/training-20180413-paris)"
chat: "In person!"
gitrepo: github.com/jpetazzo/container.training
slides: http://container.training/
exclude:
- self-paced
- extra-details
chapters:
- common/title.md
- logistics.md
#- kube/intro.md
- common/about-slides.md
- common/toc.md
- - common/prereqs.md
- kube/versions-k8s.md
- common/sampleapp.md
# Bridget doesn't go into as much depth with compose
#- common/composescale.md
- common/composedown.md
- kube/concepts-k8s.md
# - common/declarative.md
- kube/declarative.md
# - kube/kubenet.md
- kube/kubectlget.md
- kube/setup-k8s.md
- - kube/kubectlrun.md
- kube/kubectlexpose.md
- kube/ourapponkube.md
#- kube/kubectlproxy.md
- - kube/dashboard.md
- kube/kubectlscale.md
- kube/daemonset.md
- kube/rollout.md
# Stern is interesting but can be skipped
#- - kube/logs-cli.md
# Bridget hasn't added EFK yet
#- kube/logs-centralized.md
- kube/helm.md
- kube/namespaces.md
- kube/whatsnext.md
- kube/links.md
# Bridget-specific
# - kube/links-bridget.md
- common/thankyou.md

View File

@@ -1,13 +1,14 @@
title: |
Introduction to Orchestration
Deploying and Scaling Microservices
with Kubernetes
#chat: "[Slack](https://dockercommunity.slack.com/messages/C7GKACWDV)"
chat: "[Gitter](https://gitter.im/jpetazzo/training-20180607-montpellier)"
#chat: "[Gitter](https://gitter.im/jpetazzo/workshop-yyyymmdd-city)"
chat: "In person!"
gitrepo: github.com/jpetazzo/container.training
slides: http://juin2018.container.training/
slides: http://container.training/
exclude:
- self-paced
@@ -21,25 +22,26 @@ chapters:
- - common/prereqs.md
- kube/versions-k8s.md
- common/sampleapp.md
- common/composescale.md
#- common/composescale.md
- common/composedown.md
- kube/concepts-k8s.md
- - kube/concepts-k8s.md
- common/declarative.md
- kube/declarative.md
- kube/kubenet.md
- kube/kubectlget.md
- kube/setup-k8s.md
- - kube/kubectlrun.md
- kube/kubectlexpose.md
- kube/kubectlrun.md
- - kube/kubectlexpose.md
- kube/ourapponkube.md
- - kube/dashboard.md
- kube/kubectlscale.md
- kube/kubectlproxy.md
- kube/dashboard.md
- - kube/kubectlscale.md
- kube/daemonset.md
- kube/rollout.md
- - kube/logs-cli.md
- kube/logs-centralized.md
- kube/helm.md
- kube/namespaces.md
#- kube/logs-cli.md
#- kube/logs-centralized.md
#- kube/helm.md
#- kube/namespaces.md
- kube/whatsnext.md
- kube/links.md
- common/thankyou.md

View File

@@ -14,9 +14,7 @@ exclude:
chapters:
- common/title.md
#- logistics.md
# Bridget-specific; others use logistics.md
- logistics-bridget.md
- logistics.md
- kube/intro.md
- common/about-slides.md
- common/toc.md
@@ -35,6 +33,7 @@ chapters:
- - kube/kubectlrun.md
- kube/kubectlexpose.md
- kube/ourapponkube.md
#- kube/kubectlproxy.md
- - kube/dashboard.md
- kube/kubectlscale.md
- kube/daemonset.md

View File

@@ -32,6 +32,7 @@ chapters:
- kube/kubectlrun.md
- - kube/kubectlexpose.md
- kube/ourapponkube.md
- kube/kubectlproxy.md
- kube/dashboard.md
- - kube/kubectlscale.md
- kube/daemonset.md

View File

@@ -171,11 +171,7 @@ class: pic
---
## Do we need to run Docker at all?
No!
--
## Default container runtime
- By default, Kubernetes uses the Docker Engine to run containers
@@ -185,42 +181,6 @@ No!
(like CRI-O, or containerd)
---
## Do we need to run Docker at all?
Yes!
--
- In this workshop, we run our app on a single node first
- We will need to build images and ship them around
- We can do these things without Docker
<br/>
(and get diagnosed with NIH¹ syndrome)
- Docker is still the most stable container engine today
<br/>
(but other options are maturing very quickly)
.footnote[¹[Not Invented Here](https://en.wikipedia.org/wiki/Not_invented_here)]
---
## Do we need to run Docker at all?
- On our development environments, CI pipelines ... :
*Yes, almost certainly*
- On our production servers:
*Yes (today)*
*Probably not (in the future)*
.footnote[More information about CRI [on the Kubernetes blog](https://kubernetes.io/blog/2016/12/container-runtime-interface-cri-in-kubernetes)]
---
@@ -235,6 +195,7 @@ Yes!
- node (a machine — physical or virtual — in our cluster)
- pod (group of containers running together on a node)
- IP addresses are associated with *pods*, not with individual containers
- service (stable network endpoint to connect to one or multiple containers)
- namespace (more-or-less isolated group of things)
- secret (bundle of sensitive data to be passed to a container)
@@ -246,25 +207,3 @@ Yes!
class: pic
![Node, pod, container](images/k8s-arch3-thanks-weave.png)
---
class: pic
![One of the best Kubernetes architecture diagrams available](images/k8s-arch4-thanks-luxas.png)
---
## Credits
- The first diagram is courtesy of Weave Works
- a *pod* can have multiple containers working together
- IP addresses are associated with *pods*, not with individual containers
- The second diagram is courtesy of Lucas Käldström, in [this presentation](https://speakerdeck.com/luxas/kubeadm-cluster-creation-internals-from-self-hosting-to-upgradability-and-ha)
- it's one of the best Kubernetes architecture diagrams available!
Both diagrams used with permission.

View File

@@ -212,34 +212,6 @@ daemonset.apps/rng 2 2 2 2 2 <none>
---
## Too many pods
- If we check with `kubectl get pods`, we see:
- *one pod* for the deployment (named `rng-xxxxxxxxxx-yyyyy`)
- *one pod per node* for the daemon set (named `rng-zzzzz`)
```
NAME READY STATUS RESTARTS AGE
rng-54f57d4d49-7pt82 1/1 Running 0 11m
rng-b85tm 1/1 Running 0 25s
rng-hfbrr 1/1 Running 0 25s
[...]
```
--
The daemon set created one pod per node, except on the master node.
The master node has [taints](https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/) preventing pods from running there.
(To schedule a pod on this node anyway, the pod will require appropriate [tolerations](https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/).)
.footnote[(Off by one? We don't run these pods on the node hosting the control plane.)]
---
## What are all these pods doing?
- Let's check the logs of all these `rng` pods
@@ -344,162 +316,6 @@ The replica set selector also has a `pod-template-hash`, unlike the pods in our
---
# Updating a service through labels and selectors
- What if we want to drop the `rng` deployment from the load balancer?
- Option 1:
- destroy it
- Option 2:
- add an extra *label* to the daemon set
- update the service *selector* to refer to that *label*
--
Of course, option 2 offers more learning opportunities. Right?
---
## Add an extra label to the daemon set
- We will update the daemon set "spec"
- Option 1:
- edit the `rng.yml` file that we used earlier
- load the new definition with `kubectl apply`
- Option 2:
- use `kubectl edit`
--
*If you feel like you got this💕🌈, feel free to try directly.*
*We've included a few hints on the next slides for your convenience!*
---
## We've put resources in your resources
- Reminder: a daemon set is a resource that creates more resources!
- There is a difference between:
- the label(s) of a resource (in the `metadata` block in the beginning)
- the selector of a resource (in the `spec` block)
- the label(s) of the resource(s) created by the first resource (in the `template` block)
- You need to update the selector and the template (metadata labels are not mandatory)
- The template must match the selector
(i.e. the resource will refuse to create resources that it will not select)
---
## Adding our label
- Let's add a label `isactive: yes`
- In YAML, `yes` should be quoted; i.e. `isactive: "yes"`
.exercise[
- Update the daemon set to add `isactive: "yes"` to the selector and template label:
```bash
kubectl edit daemonset rng
```
- Update the service to add `isactive: "yes"` to its selector:
```bash
kubectl edit service rng
```
]
---
## Checking what we've done
.exercise[
- Check the most recent log line of all `run=rng` pods to confirm that exactly one per node is now active:
```bash
kubectl logs -l run=rng --tail 1
```
]
The timestamps should give us a hint about how many pods are currently receiving traffic.
.exercise[
- Look at the pods that we have right now:
```bash
kubectl get pods
```
]
---
## Cleaning up
- The pods of the deployment and the "old" daemon set are still running
- We are going to identify them programmatically
.exercise[
- List the pods with `run=rng` but without `isactive=yes`:
```bash
kubectl get pods -l run=rng,isactive!=yes
```
- Remove these pods:
```bash
kubectl delete pods -l run=rng,isactive!=yes
```
]
---
## Cleaning up stale pods
```
$ kubectl get pods
NAME READY STATUS RESTARTS AGE
rng-54f57d4d49-7pt82 1/1 Terminating 0 51m
rng-54f57d4d49-vgz9h 1/1 Running 0 22s
rng-b85tm 1/1 Terminating 0 39m
rng-hfbrr 1/1 Terminating 0 39m
rng-vplmj 1/1 Running 0 7m
rng-xbpvg 1/1 Running 0 7m
[...]
```
- The extra pods (noted `Terminating` above) are going away
- ... But a new one (`rng-54f57d4d49-vgz9h` above) was restarted immediately!
--
- Remember, the *deployment* still exists, and makes sure that one pod is up and running
- If we delete the pod associated to the deployment, it is recreated automatically
---
## Deleting a deployment
.exercise[
@@ -524,63 +340,3 @@ rng-xbpvg 1/1 Running 0 11m
```
Ding, dong, the deployment is dead! And the daemon set lives on.
---
## Avoiding extra pods
- When we changed the definition of the daemon set, it immediately created new pods. We had to remove the old ones manually.
- How could we have avoided this?
--
- By adding the `isactive: "yes"` label to the pods before changing the daemon set!
- This can be done programmatically with `kubectl patch`:
```bash
PATCH='
metadata:
labels:
isactive: "yes"
'
kubectl get pods -l run=rng -l controller-revision-hash -o name |
xargs kubectl patch -p "$PATCH"
```
---
## Labels and debugging
- When a pod is misbehaving, we can delete it: another one will be recreated
- But we can also change its labels
- It will be removed from the load balancer (it won't receive traffic anymore)
- Another pod will be recreated immediately
- But the problematic pod is still here, and we can inspect and debug it
- We can even re-add it to the rotation if necessary
(Very useful to troubleshoot intermittent and elusive bugs)
---
## Labels and advanced rollout control
- Conversely, we can add pods matching a service's selector
- These pods will then receive requests and serve traffic
- Examples:
- one-shot pod with all debug flags enabled, to collect logs
- pods created automatically, but added to rotation in a second step
<br/>
(by setting their label accordingly)
- This gives us building blocks for canary and blue/green deployments

View File

@@ -10,9 +10,6 @@
3) bypass authentication for the dashboard
--
There is an additional step to make the dashboard available from outside (we'll get to that)
--
@@ -148,58 +145,6 @@ The dashboard will then ask you which authentication you want to use.
---
## Exposing the dashboard over HTTPS
- We took a shortcut by forwarding HTTP to HTTPS inside the cluster
- Let's expose the dashboard over HTTPS!
- The dashboard is exposed through a `ClusterIP` service (internal traffic only)
- We will change that into a `NodePort` service (accepting outside traffic)
.exercise[
- Edit the service:
```bash
kubectl edit service kubernetes-dashboard
```
]
--
`NotFound`?!? Y U NO WORK?!?
---
## Editing the `kubernetes-dashboard` service
- If we look at the [YAML](https://goo.gl/Qamqab) that we loaded before, we'll get a hint
--
- The dashboard was created in the `kube-system` namespace
--
.exercise[
- Edit the service:
```bash
kubectl -n kube-system edit service kubernetes-dashboard
```
- Change `ClusterIP` to `NodePort`, save, and exit
- Check the port that was assigned with `kubectl -n kube-system get services`
- Connect to https://oneofournodes:3xxxx/ (yes, https)
]
---
## Running the Kubernetes dashboard securely
- The steps that we just showed you are *for educational purposes only!*

View File

@@ -123,7 +123,7 @@ Note: please DO NOT call the service `search`. It would collide with the TLD.
.exercise[
- Let's obtain the IP address that was allocated for our service, *programatically:*
- Let's obtain the IP address that was allocated for our service, *programmatically:*
```bash
IP=$(kubectl get svc elastic -o go-template --template '{{ .spec.clusterIP }}')
```

View File

@@ -1,3 +1,5 @@
class: extra-details
# First contact with `kubectl`
- `kubectl` is (almost) the only tool we'll need to talk to Kubernetes
@@ -79,6 +81,8 @@
---
class: extra-details
## What's available?
- `kubectl` has pretty good introspection facilities

117
slides/kube/kubectlproxy.md Normal file
View File

@@ -0,0 +1,117 @@
# Accessing internal services with `kubectl proxy`
- `kubectl proxy` runs a proxy in the foreground
- This proxy lets us access the Kubernetes API without authentication
(`kubectl proxy` adds our credentials on the fly to the requests)
- This proxy lets us access the Kubernetes API over plain HTTP
- This is a great tool to learn and experiment with the Kubernetes API
- The Kubernetes API also gives us a proxy to HTTP and HTTPS services
- Therefore, we can use `kubectl proxy` to access internal services
(Without using a `NodePort` or similar service)
---
## Secure by default
- By default, the proxy listens on port 8001
(But this can be changed, or we can tell `kubectl proxy` to pick a port)
- By default, the proxy binds to `127.0.0.1`
(Making it unreachable from other machines, for security reasons)
- By default, the proxy only accepts connections from:
`^localhost$,^127\.0\.0\.1$,^\[::1\]$`
- This is great when running `kubectl proxy` locally
- Not-so-great when running it on a remote machine
---
## Running `kubectl proxy` on a remote machine
- We are going to bind to `INADDR_ANY` instead of `127.0.0.1`
- We are going to accept connections from any address
.exercise[
- Run an open proxy to the Kubernetes API:
```bash
kubectl proxy --port=8888 --address=0.0.0.0 --accept-hosts=.*
```
]
.warning[Anyone can now do whatever they want with our Kubernetes cluster!
<br/>
(Don't do this on a real cluster!)]
---
## Viewing available API routes
- The default route (i.e. `/`) shows a list of available API endpoints
.exercise[
- Point your browser to the IP address of the node running `kubectl proxy`, port 8888
]
The result should look like this:
```json
{
"paths": [
"/api",
"/api/v1",
"/apis",
"/apis/",
"/apis/admissionregistration.k8s.io",
```
---
## Connecting to a service through the proxy
- The API can proxy HTTP and HTTPS requests by accessing a special route:
```
/api/v1/namespaces/`name_of_namespace`/services/`name_of_service`/proxy
```
- Since we now have access to the API, we can use this special route
.exercise[
- Access the `hasher` service through the special proxy route:
```open
http://`X.X.X.X`:8888/api/v1/namespaces/default/services/hasher/proxy
```
]
You should see the banner of the hasher service: `HASHER running on ...`
---
## Stopping the proxy
- Remember: as it is running right now, `kubectl proxy` gives open access to our cluster
.exercise[
- Stop the `kubectl proxy` process with Ctrl-C
]

View File

@@ -81,6 +81,8 @@ Note: as of 1.10.1, resource types are displayed in more detail.
---
class: extra-details
## Our `pingpong` deployment
- `kubectl run` created a *deployment*, `deployment.apps/pingpong`
@@ -133,6 +135,8 @@ pod/pingpong-7c8bbcd9bc-6c9qz 1/1 Running 0 10m
---
class: extra-details
## Streaming logs in real time
- Just like `docker logs`, `kubectl logs` supports convenient options:
@@ -223,6 +227,8 @@ We could! But the *deployment* would notice it right away, and scale back to the
---
clas: extra-details
## Viewing logs of multiple pods
- When we specify a deployment name, only one single pod's logs are shown
@@ -246,6 +252,8 @@ Unfortunately, `--follow` cannot (yet) be used to stream the logs from multiple
---
class: extra-details
## Aren't we flooding 1.1.1.1?
- If you're wondering this, good question!

View File

@@ -1,19 +1,10 @@
# Links and resources
All things Kubernetes:
- [Kubernetes Community](https://kubernetes.io/community/) - Slack, Google Groups, meetups
- [Kubernetes on StackOverflow](https://stackoverflow.com/questions/tagged/kubernetes)
- [Play With Kubernetes Hands-On Labs](https://medium.com/@marcosnils/introducing-pwk-play-with-k8s-159fcfeb787b)
All things Docker:
- [Azure Kubernetes Service](https://docs.microsoft.com/azure/aks/)
- [Docker documentation](http://docs.docker.com/)
- [Docker Hub](https://hub.docker.com)
- [Docker on StackOverflow](https://stackoverflow.com/questions/tagged/docker)
- [Play With Docker Hands-On Labs](http://training.play-with-docker.com/)
Everything else:
- [Cloud Developer Advocates](https://developer.microsoft.com/advocates/)
- [Local meetups](https://www.meetup.com/)

View File

@@ -4,6 +4,8 @@ Our app on Kube
---
class: extra-details
## What's on the menu?
In this part, we will:
@@ -130,6 +132,8 @@ We should see:
---
class: extra-details
## Testing our local registry
- We can retag a small image, and push it to the registry
@@ -151,6 +155,8 @@ We should see:
---
class: extra-details
## Checking again what's on our local registry
- Let's use the same endpoint as before

View File

@@ -190,6 +190,34 @@ class: extra-details
---
## Checking the dashboard during the bad rollout
.exercise[
- Check which port the dashboard is on:
```bash
kubectl -n kube-system get svc socat
```
]
Note the `3xxxx` port.
.exercise[
- Connect to http://oneofournodes:3xxxx/
<!-- ```open https://node1:3xxxx/``` -->
]
--
- We have failures in Deployments, Pods, and Replica Sets
---
## Recovering from a bad rollout
- We could push some `v0.3` image

View File

@@ -24,23 +24,6 @@
---
## `kubeadm` drawbacks
- Doesn't set up Docker or any other container engine
- Doesn't set up the overlay network
- Doesn't set up multi-master (no high availability)
--
(At least ... not yet!)
--
- "It's still twice as many steps as setting up a Swarm cluster 😕" -- Jérôme
---
## Other deployment options

View File

@@ -1,7 +1,7 @@
## Versions installed
- Kubernetes 1.10.3
- Docker Engine 18.03.0-ce
- Kubernetes 1.11.0
- Docker Engine 18.03.1-ce
- Docker Compose 1.21.1

View File

@@ -1,45 +1,3 @@
# Next steps
*Alright, how do I get started and containerize my apps?*
--
Suggested containerization checklist:
.checklist[
- write a Dockerfile for one service in one app
- write Dockerfiles for the other (buildable) services
- write a Compose file for that whole app
- make sure that devs are empowered to run the app in containers
- set up automated builds of container images from the code repo
- set up a CI pipeline using these container images
- set up a CD pipeline (for staging/QA) using these images
]
And *then* it is time to look at orchestration!
---
## Namespaces
- Namespaces let you run multiple identical stacks side by side
- Two namespaces (e.g. `blue` and `green`) can each have their own `redis` service
- Each of the two `redis` services has its own `ClusterIP`
- `kube-dns` creates two entries, mapping to these two `ClusterIP` addresses:
`redis.blue.svc.cluster.local` and `redis.green.svc.cluster.local`
- Pods in the `blue` namespace get a *search suffix* of `blue.svc.cluster.local`
- As a result, resolving `redis` from a pod in the `blue` namespace yields the "local" `redis`
.warning[This does not provide *isolation*! That would be the job of network policies.]
---
## Stateful services (databases etc.)
- As a first step, it is wiser to keep stateful services *outside* of the cluster
@@ -74,12 +32,6 @@ And *then* it is time to look at orchestration!
---
## Stateful services (demo!)
.center[![Demo](images/demo.jpg)]
---
## HTTP traffic handling
- *Services* are layer 4 constructs
@@ -99,12 +51,6 @@ And *then* it is time to look at orchestration!
---
## Ingress with Træfik (demo!)
.center[![Demo](images/demo.jpg)]
---
## Logging and metrics
- Logging is delegated to the container engine
@@ -184,17 +130,3 @@ Sorry Star Trek fans, this is not the federation you're looking for!
- Synchronize resources across clusters
- Discover resources across clusters
---
## Developer experience
*I've put this last, but it's pretty important!*
- How do you on-board a new developer?
- What do they need to install to get a dev stack?
- How does a code change make it from dev to prod?
- How does someone add a component to a stack?

View File

@@ -1,19 +1,14 @@
## Intros
- Hello! We are:
- Hello! We are:
- .emoji[] Jérémy ([@jeremygarrouste](https://twitter.com/jeremygarrouste), Inpiwee)
- .emoji[] Ashley ([@ashleymcnamara](https://twitter.com/ashleymcnamara))
- .emoji[🐳] Jérôme ([@jpetazzo](https://twitter.com/jpetazzo), Enix SAS)
- .emoji[🌟] Brian ([@bketelsen](https://twitter.com/bketelsen))
- The training will run from 9:15 to 18:00
- There will be a lunch break from 12:00 to 13:30
(And coffee breaks!)
- The workshop will run from 13:30-15:00
- Feel free to interrupt for questions at any time
- *Especially when you see full screen container pictures!*
- Live feedback, questions, help: @@CHAT@@

View File

@@ -1,2 +1,3 @@
# This is for netlify
PyYAML
jinja2

61
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View File

@@ -0,0 +1,61 @@
title: |
Container Orchestration
with Docker and Swarm
chat: "[Slack](https://dockercommunity.slack.com/messages/C7GKACWDV)"
#chat: "[Gitter](https://gitter.im/jpetazzo/workshop-yyyymmdd-city)"
gitrepo: github.com/jpetazzo/container.training
slides: http://container.training/
exclude:
- self-paced
- snap
- btp-auto
- benchmarking
- elk-manual
- prom-manual
chapters:
- common/title.md
- logistics.md
- swarm/intro.md
- common/about-slides.md
- common/toc.md
- - common/prereqs.md
- swarm/versions.md
- common/sampleapp.md
- common/composescale.md
- common/composedown.md
- swarm/swarmkit.md
- common/declarative.md
- swarm/swarmmode.md
- swarm/creatingswarm.md
#- swarm/machine.md
- swarm/morenodes.md
- - swarm/firstservice.md
- swarm/ourapponswarm.md
- swarm/hostingregistry.md
- swarm/testingregistry.md
- swarm/btp-manual.md
- swarm/swarmready.md
- swarm/compose2swarm.md
- swarm/updatingservices.md
#- swarm/rollingupdates.md
- swarm/healthchecks.md
- - swarm/operatingswarm.md
- swarm/netshoot.md
- swarm/ipsec.md
- swarm/swarmtools.md
- swarm/security.md
- swarm/secrets.md
- swarm/encryptionatrest.md
- swarm/leastprivilege.md
- swarm/apiscope.md
- - swarm/logging.md
- swarm/metrics.md
- swarm/stateful.md
- swarm/extratips.md
- common/thankyou.md
- swarm/links.md

61
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View File

@@ -0,0 +1,61 @@
title: |
Container Orchestration
with Docker and Swarm
chat: "[Slack](https://dockercommunity.slack.com/messages/C7GKACWDV)"
#chat: "[Gitter](https://gitter.im/jpetazzo/workshop-yyyymmdd-city)"
gitrepo: github.com/jpetazzo/container.training
slides: http://container.training/
exclude:
- self-paced
- snap
- btp-manual
- benchmarking
- elk-manual
- prom-manual
chapters:
- common/title.md
- logistics.md
- swarm/intro.md
- common/about-slides.md
- common/toc.md
- - common/prereqs.md
- swarm/versions.md
- common/sampleapp.md
- common/composescale.md
- common/composedown.md
- swarm/swarmkit.md
- common/declarative.md
- swarm/swarmmode.md
- swarm/creatingswarm.md
#- swarm/machine.md
- swarm/morenodes.md
- - swarm/firstservice.md
- swarm/ourapponswarm.md
#- swarm/hostingregistry.md
#- swarm/testingregistry.md
#- swarm/btp-manual.md
#- swarm/swarmready.md
- swarm/compose2swarm.md
- swarm/updatingservices.md
#- swarm/rollingupdates.md
#- swarm/healthchecks.md
- - swarm/operatingswarm.md
#- swarm/netshoot.md
#- swarm/ipsec.md
#- swarm/swarmtools.md
- swarm/security.md
#- swarm/secrets.md
#- swarm/encryptionatrest.md
- swarm/leastprivilege.md
- swarm/apiscope.md
- swarm/logging.md
- swarm/metrics.md
#- swarm/stateful.md
#- swarm/extratips.md
- common/thankyou.md
- swarm/links.md

View File

@@ -0,0 +1,70 @@
title: |
Container Orchestration
with Docker and Swarm
chat: "[Slack](https://dockercommunity.slack.com/messages/C7GKACWDV)"
gitrepo: github.com/jpetazzo/container.training
slides: http://container.training/
exclude:
- in-person
- btp-auto
chapters:
- common/title.md
#- common/logistics.md
- swarm/intro.md
- common/about-slides.md
- common/toc.md
- - common/prereqs.md
- swarm/versions.md
- |
name: part-1
class: title, self-paced
Part 1
- common/sampleapp.md
- common/composescale.md
- common/composedown.md
- swarm/swarmkit.md
- common/declarative.md
- swarm/swarmmode.md
- swarm/creatingswarm.md
#- swarm/machine.md
- swarm/morenodes.md
- - swarm/firstservice.md
- swarm/ourapponswarm.md
- swarm/hostingregistry.md
- swarm/testingregistry.md
- swarm/btp-manual.md
- swarm/swarmready.md
- swarm/compose2swarm.md
- |
name: part-2
class: title, self-paced
Part 2
- - swarm/operatingswarm.md
- swarm/netshoot.md
- swarm/swarmnbt.md
- swarm/ipsec.md
- swarm/updatingservices.md
- swarm/rollingupdates.md
- swarm/healthchecks.md
- swarm/nodeinfo.md
- swarm/swarmtools.md
- - swarm/security.md
- swarm/secrets.md
- swarm/encryptionatrest.md
- swarm/leastprivilege.md
- swarm/apiscope.md
- swarm/logging.md
- swarm/metrics.md
- swarm/stateful.md
- swarm/extratips.md
- common/thankyou.md
- swarm/links.md

70
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View File

@@ -0,0 +1,70 @@
title: |
Container Orchestration
with Docker and Swarm
chat: "[Slack](https://dockercommunity.slack.com/messages/C7GKACWDV)"
gitrepo: github.com/jpetazzo/container.training
slides: http://container.training/
exclude:
- in-person
- btp-auto
chapters:
- common/title.md
#- common/logistics.md
- swarm/intro.md
- common/about-slides.md
- common/toc.md
- - common/prereqs.md
- swarm/versions.md
- |
name: part-1
class: title, self-paced
Part 1
- common/sampleapp.md
- common/composescale.md
- common/composedown.md
- swarm/swarmkit.md
- common/declarative.md
- swarm/swarmmode.md
- swarm/creatingswarm.md
#- swarm/machine.md
- swarm/morenodes.md
- - swarm/firstservice.md
- swarm/ourapponswarm.md
- swarm/hostingregistry.md
- swarm/testingregistry.md
- swarm/btp-manual.md
- swarm/swarmready.md
- swarm/compose2swarm.md
- |
name: part-2
class: title, self-paced
Part 2
- - swarm/operatingswarm.md
#- swarm/netshoot.md
#- swarm/swarmnbt.md
- swarm/ipsec.md
- swarm/updatingservices.md
- swarm/rollingupdates.md
#- swarm/healthchecks.md
- swarm/nodeinfo.md
- swarm/swarmtools.md
- - swarm/security.md
- swarm/secrets.md
- swarm/encryptionatrest.md
- swarm/leastprivilege.md
- swarm/apiscope.md
#- swarm/logging.md
#- swarm/metrics.md
- swarm/stateful.md
- swarm/extratips.md
- common/thankyou.md
- swarm/links.md

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@@ -77,7 +77,7 @@ More resources on this topic:
- It won't be scheduled automatically when constraints are satisfiable again
- You will have to update the service; you can do a no-op udate with:
- You will have to update the service; you can do a no-op update with:
```bash
docker service update ... --force
```

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@@ -386,7 +386,7 @@ class: btw-labels
- owner of a service (for billing, paging...)
- corelate Swarm objects together (services, volumes, configs, secrets, etc.)
- correlate Swarm objects together (services, volumes, configs, secrets, etc.)
---

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@@ -554,7 +554,7 @@ class: snap
## Instruct all nodes to join the agreement
- We dont need another fancy global service!
- We don't need another fancy global service!
- We can join nodes from any existing node of the cluster

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@@ -179,7 +179,7 @@ class: self-paced
- one of the main take-aways was *"you're gonna need a bigger manager"*
- Testing by the community: [4700 heterogenous nodes all over the 'net](https://sematext.com/blog/2016/11/14/docker-swarm-lessons-from-swarm3k/)
- Testing by the community: [4700 heterogeneous nodes all over the 'net](https://sematext.com/blog/2016/11/14/docker-swarm-lessons-from-swarm3k/)
- it just works

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@@ -75,7 +75,7 @@ When enabling user namespaces:
For practical reasons, when enabling user namespaces, the Docker Engine places containers and images (and everything else) in a different directory.
As a resut, if you enable user namespaces on an existing installation:
As a result, if you enable user namespaces on an existing installation:
- all containers and images (and e.g. Swarm data) disappear

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@@ -302,7 +302,7 @@ class: extra-details, benchmarking
- Requests are a bit slower in the parallel benchmark
- It looks like `hasher` is better equiped to deal with concurrency than `rng`
- It looks like `hasher` is better equipped to deal with concurrency than `rng`
---

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@@ -69,7 +69,7 @@ class: extra-details
(containerd, libcontainer, SwarmKit...)
- More predictible release schedule (see next slide)
- More predictable release schedule (see next slide)
---