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2 Commits

Author SHA1 Message Date
Jerome Petazzoni
5447d8caf7 Add VMs and chat URL 2020-07-07 17:29:17 +02:00
Jerome Petazzoni
424d32ad47 Final updates to content 2020-07-07 17:14:43 +02:00
43 changed files with 352 additions and 636 deletions

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@@ -9,21 +9,21 @@ services:
etcd:
network_mode: "service:pause"
image: k8s.gcr.io/etcd:3.4.9
image: k8s.gcr.io/etcd:3.4.3
command: etcd
kube-apiserver:
network_mode: "service:pause"
image: k8s.gcr.io/hyperkube:v1.18.8
image: k8s.gcr.io/hyperkube:v1.17.2
command: kube-apiserver --etcd-servers http://127.0.0.1:2379 --address 0.0.0.0 --disable-admission-plugins=ServiceAccount --allow-privileged
kube-controller-manager:
network_mode: "service:pause"
image: k8s.gcr.io/hyperkube:v1.18.8
image: k8s.gcr.io/hyperkube:v1.17.2
command: kube-controller-manager --master http://localhost:8080 --allocate-node-cidrs --cluster-cidr=10.CLUSTER.0.0/16
"Edit the CLUSTER placeholder first. Then, remove this line.":
kube-scheduler:
network_mode: "service:pause"
image: k8s.gcr.io/hyperkube:v1.18.8
image: k8s.gcr.io/hyperkube:v1.17.2
command: kube-scheduler --master http://localhost:8080

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@@ -9,20 +9,20 @@ services:
etcd:
network_mode: "service:pause"
image: k8s.gcr.io/etcd:3.4.9
image: k8s.gcr.io/etcd:3.4.3
command: etcd
kube-apiserver:
network_mode: "service:pause"
image: k8s.gcr.io/hyperkube:v1.18.8
image: k8s.gcr.io/hyperkube:v1.17.2
command: kube-apiserver --etcd-servers http://127.0.0.1:2379 --address 0.0.0.0 --disable-admission-plugins=ServiceAccount
kube-controller-manager:
network_mode: "service:pause"
image: k8s.gcr.io/hyperkube:v1.18.8
image: k8s.gcr.io/hyperkube:v1.17.2
command: kube-controller-manager --master http://localhost:8080
kube-scheduler:
network_mode: "service:pause"
image: k8s.gcr.io/hyperkube:v1.18.8
image: k8s.gcr.io/hyperkube:v1.17.2
command: kube-scheduler --master http://localhost:8080

View File

@@ -27,7 +27,7 @@ spec:
command:
- sh
- -c
- "mkdir -p /root/.ssh && apk update && apk add curl && curl https://github.com/jpetazzo.keys > /root/.ssh/authorized_keys"
- "apk update && apk add curl && curl https://github.com/jpetazzo.keys > /root/.ssh/authorized_keys"
containers:
- name: web
image: nginx

View File

@@ -1,5 +1,4 @@
INFRACLASS=openstack-tf
INFRACLASS=openstack
# If you are using OpenStack, copy this file (e.g. to "openstack" or "enix")
# and customize the variables below.
export TF_VAR_user="jpetazzo"
@@ -7,4 +6,4 @@ export TF_VAR_tenant="training"
export TF_VAR_domain="Default"
export TF_VAR_password="..."
export TF_VAR_auth_url="https://api.r1.nxs.enix.io/v3"
export TF_VAR_flavor="GP1.S"
export TF_VAR_flavor="GP1.S"

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@@ -1,24 +0,0 @@
INFRACLASS=openstack-cli
# Copy that file to e.g. openstack or ovh, then customize it.
# Some Openstack providers (like OVHcloud) will let you download
# a file containing credentials. That's what you need to use.
# The file below contains some example values.
export OS_AUTH_URL=https://auth.cloud.ovh.net/v3/
export OS_IDENTITY_API_VERSION=3
export OS_USER_DOMAIN_NAME=${OS_USER_DOMAIN_NAME:-"Default"}
export OS_PROJECT_DOMAIN_NAME=${OS_PROJECT_DOMAIN_NAME:-"Default"}
export OS_TENANT_ID=abcd1234
export OS_TENANT_NAME="0123456"
export OS_USERNAME="user-xyz123"
export OS_PASSWORD=AbCd1234
export OS_REGION_NAME="GRA7"
# And then some values to indicate server type, image, etc.
# You can see available flavors with `openstack flavor list`
export OS_FLAVOR=s1-4
# You can see available images with `openstack image list`
export OS_IMAGE=896c5f54-51dc-44f0-8c22-ce99ba7164df
# You can create a key with `openstack keypair create --public-key ~/.ssh/id_rsa.pub containertraining`
export OS_KEY=containertraining

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@@ -1,5 +0,0 @@
INFRACLASS=hetzner
if ! [ -f ~/.config/hcloud/cli.toml ]; then
warn "~/.config/hcloud/cli.toml not found."
warn "Make sure that the Hetzner CLI (hcloud) is installed and configured."
fi

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@@ -1 +0,0 @@
INFRACLASS=scaleway

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@@ -65,27 +65,6 @@ _cmd_deploy() {
sleep 1
done"
# Special case for scaleway since it doesn't come with sudo
if [ "$INFRACLASS" = "scaleway" ]; then
pssh -l root "
grep DEBIAN_FRONTEND /etc/environment || echo DEBIAN_FRONTEND=noninteractive >> /etc/environment
grep cloud-init /etc/sudoers && rm /etc/sudoers
apt-get update && apt-get install sudo -y"
fi
# FIXME
# Special case for hetzner since it doesn't have an ubuntu user
#if [ "$INFRACLASS" = "hetzner" ]; then
# pssh -l root "
#[ -d /home/ubuntu ] ||
# useradd ubuntu -m -s /bin/bash
#echo 'ubuntu ALL=(ALL:ALL) NOPASSWD:ALL' > /etc/sudoers.d/ubuntu
#[ -d /home/ubuntu/.ssh ] ||
# install --owner=ubuntu --mode=700 --directory /home/ubuntu/.ssh
#[ -f /home/ubuntu/.ssh/authorized_keys ] ||
# install --owner=ubuntu --mode=600 /root/.ssh/authorized_keys --target-directory /home/ubuntu/.ssh"
#fi
# Copy settings and install Python YAML parser
pssh -I tee /tmp/settings.yaml <tags/$TAG/settings.yaml
pssh "
@@ -152,19 +131,19 @@ _cmd_kubebins() {
cd /usr/local/bin
if ! [ -x etcd ]; then
##VERSION##
curl -L https://github.com/etcd-io/etcd/releases/download/v3.4.9/etcd-v3.4.9-linux-amd64.tar.gz \
curl -L https://github.com/etcd-io/etcd/releases/download/v3.4.3/etcd-v3.4.3-linux-amd64.tar.gz \
| sudo tar --strip-components=1 --wildcards -zx '*/etcd' '*/etcdctl'
fi
if ! [ -x hyperkube ]; then
##VERSION##
curl -L https://dl.k8s.io/v1.18.8/kubernetes-server-linux-amd64.tar.gz \
curl -L https://dl.k8s.io/v1.17.2/kubernetes-server-linux-amd64.tar.gz \
| sudo tar --strip-components=3 -zx \
kubernetes/server/bin/kube{ctl,let,-proxy,-apiserver,-scheduler,-controller-manager}
fi
sudo mkdir -p /opt/cni/bin
cd /opt/cni/bin
if ! [ -x bridge ]; then
curl -L https://github.com/containernetworking/plugins/releases/download/v0.8.6/cni-plugins-linux-amd64-v0.8.6.tgz \
curl -L https://github.com/containernetworking/plugins/releases/download/v0.7.6/cni-plugins-amd64-v0.7.6.tgz \
| sudo tar -zx
fi
"
@@ -200,7 +179,7 @@ _cmd_kube() {
pssh --timeout 200 "
if i_am_first_node && [ ! -f /etc/kubernetes/admin.conf ]; then
kubeadm token generate > /tmp/token &&
sudo kubeadm init $EXTRA_KUBEADM --token \$(cat /tmp/token) --apiserver-cert-extra-sans \$(cat /tmp/ipv4) --ignore-preflight-errors=NumCPU
sudo kubeadm init $EXTRA_KUBEADM --token \$(cat /tmp/token) --apiserver-cert-extra-sans \$(cat /tmp/ipv4)
fi"
# Put kubeconfig in ubuntu's and docker's accounts
@@ -237,13 +216,13 @@ _cmd_kube() {
# Install kubectx and kubens
pssh "
[ -d kubectx ] || git clone https://github.com/ahmetb/kubectx &&
sudo ln -sf \$HOME/kubectx/kubectx /usr/local/bin/kctx &&
sudo ln -sf \$HOME/kubectx/kubens /usr/local/bin/kns &&
sudo cp \$HOME/kubectx/completion/*.bash /etc/bash_completion.d &&
sudo ln -sf /home/ubuntu/kubectx/kubectx /usr/local/bin/kctx &&
sudo ln -sf /home/ubuntu/kubectx/kubens /usr/local/bin/kns &&
sudo cp /home/ubuntu/kubectx/completion/*.bash /etc/bash_completion.d &&
[ -d kube-ps1 ] || git clone https://github.com/jonmosco/kube-ps1 &&
sudo -u docker sed -i s/docker-prompt/kube_ps1/ /home/docker/.bashrc &&
sudo -u docker tee -a /home/docker/.bashrc <<EOF
. \$HOME/kube-ps1/kube-ps1.sh
. /home/ubuntu/kube-ps1/kube-ps1.sh
KUBE_PS1_PREFIX=""
KUBE_PS1_SUFFIX=""
KUBE_PS1_SYMBOL_ENABLE="false"
@@ -316,26 +295,23 @@ _cmd_kubetest() {
set -e
if i_am_first_node; then
which kubectl
for NODE in \$(grep [0-9]\$ /etc/hosts | grep -v ^127 | awk {print\ \\\$2}); do
for NODE in \$(awk /[0-9]\$/\ {print\ \\\$2} /etc/hosts); do
echo \$NODE ; kubectl get nodes | grep -w \$NODE | grep -w Ready
done
fi"
}
_cmd ips "Show the IP addresses for a given tag"
_cmd_ips() {
_cmd ids "(FIXME) List the instance IDs belonging to a given tag or token"
_cmd_ids() {
TAG=$1
need_tag $TAG
SETTINGS=tags/$TAG/settings.yaml
CLUSTERSIZE=$(awk '/^clustersize:/ {print $2}' $SETTINGS)
while true; do
for I in $(seq $CLUSTERSIZE); do
read ip || return 0
printf "%s\t" "$ip"
done
printf "\n"
done < tags/$TAG/ips.txt
info "Looking up by tag:"
aws_get_instance_ids_by_tag $TAG
# Just in case we managed to create instances but weren't able to tag them
info "Looking up by token:"
aws_get_instance_ids_by_client_token $TAG
}
_cmd list "List available groups for a given infrastructure"
@@ -435,6 +411,16 @@ _cmd_opensg() {
infra_opensg
}
_cmd portworx "Prepare the nodes for Portworx deployment"
_cmd_portworx() {
TAG=$1
need_tag
pssh "
sudo truncate --size 10G /portworx.blk &&
sudo losetup /dev/loop4 /portworx.blk"
}
_cmd disableaddrchecks "Disable source/destination IP address checks"
_cmd_disableaddrchecks() {
TAG=$1
@@ -479,6 +465,18 @@ _cmd_quotas() {
infra_quotas
}
_cmd retag "(FIXME) Apply a new tag to a group of VMs"
_cmd_retag() {
OLDTAG=$1
NEWTAG=$2
TAG=$OLDTAG
need_tag
if [[ -z "$NEWTAG" ]]; then
die "You must specify a new tag to apply."
fi
aws_tag_instances $OLDTAG $NEWTAG
}
_cmd ssh "Open an SSH session to the first node of a tag"
_cmd_ssh() {
TAG=$1
@@ -665,12 +663,11 @@ _cmd_webssh() {
sudo apt-get update &&
sudo apt-get install python-tornado python-paramiko -y"
pssh "
cd /opt
[ -d webssh ] || sudo git clone https://github.com/jpetazzo/webssh"
[ -d webssh ] || git clone https://github.com/jpetazzo/webssh"
pssh "
for KEYFILE in /etc/ssh/*.pub; do
read a b c < \$KEYFILE; echo localhost \$a \$b
done | sudo tee /opt/webssh/known_hosts"
done > webssh/known_hosts"
pssh "cat >webssh.service <<EOF
[Unit]
Description=webssh
@@ -679,7 +676,7 @@ Description=webssh
WantedBy=multi-user.target
[Service]
WorkingDirectory=/opt/webssh
WorkingDirectory=/home/ubuntu/webssh
ExecStart=/usr/bin/env python run.py --fbidhttp=false --port=1080 --policy=reject
User=nobody
Group=nogroup
@@ -702,6 +699,11 @@ _cmd_www() {
python3 -m http.server
}
greet() {
IAMUSER=$(aws iam get-user --query 'User.UserName')
info "Hello! You seem to be UNIX user $USER, and IAM user $IAMUSER."
}
pull_tag() {
# Pre-pull a bunch of images
pssh --timeout 900 'for I in \
@@ -791,3 +793,27 @@ make_key_name() {
SHORT_FINGERPRINT=$(ssh-add -l | grep RSA | head -n1 | cut -d " " -f 2 | tr -d : | cut -c 1-8)
echo "${SHORT_FINGERPRINT}-${USER}"
}
sync_keys() {
# make sure ssh-add -l contains "RSA"
ssh-add -l | grep -q RSA \
|| die "The output of \`ssh-add -l\` doesn't contain 'RSA'. Start the agent, add your keys?"
AWS_KEY_NAME=$(make_key_name)
info "Syncing keys... "
if ! aws ec2 describe-key-pairs --key-name "$AWS_KEY_NAME" &>/dev/null; then
aws ec2 import-key-pair --key-name $AWS_KEY_NAME \
--public-key-material "$(ssh-add -L \
| grep -i RSA \
| head -n1 \
| cut -d " " -f 1-2)" &>/dev/null
if ! aws ec2 describe-key-pairs --key-name "$AWS_KEY_NAME" &>/dev/null; then
die "Somehow, importing the key didn't work. Make sure that 'ssh-add -l | grep RSA | head -n1' returns an RSA key?"
else
info "Imported new key $AWS_KEY_NAME."
fi
else
info "Using existing key $AWS_KEY_NAME."
fi
}

View File

@@ -1,13 +1,9 @@
if ! command -v aws >/dev/null; then
warn "AWS CLI (aws) not found."
fi
infra_list() {
aws_display_tags
}
infra_quotas() {
aws_greet
greet
max_instances=$(aws ec2 describe-account-attributes \
--attribute-names max-instances \
@@ -25,10 +21,10 @@ infra_start() {
COUNT=$1
# Print our AWS username, to ease the pain of credential-juggling
aws_greet
greet
# Upload our SSH keys to AWS if needed, to be added to each VM's authorized_keys
key_name=$(aws_sync_keys)
key_name=$(sync_keys)
AMI=$(aws_get_ami) # Retrieve the AWS image ID
if [ -z "$AMI" ]; then
@@ -65,7 +61,7 @@ infra_start() {
aws_tag_instances $TAG $TAG
# Wait until EC2 API tells us that the instances are running
aws_wait_until_tag_is_running $TAG $COUNT
wait_until_tag_is_running $TAG $COUNT
aws_get_instance_ips_by_tag $TAG > tags/$TAG/ips.txt
}
@@ -102,7 +98,7 @@ infra_disableaddrchecks() {
done
}
aws_wait_until_tag_is_running() {
wait_until_tag_is_running() {
max_retry=100
i=0
done_count=0
@@ -218,32 +214,3 @@ aws_get_ami() {
##VERSION##
find_ubuntu_ami -r $AWS_DEFAULT_REGION -a amd64 -v 18.04 -t hvm:ebs -N -q
}
aws_greet() {
IAMUSER=$(aws iam get-user --query 'User.UserName')
info "Hello! You seem to be UNIX user $USER, and IAM user $IAMUSER."
}
aws_sync_keys() {
# make sure ssh-add -l contains "RSA"
ssh-add -l | grep -q RSA \
|| die "The output of \`ssh-add -l\` doesn't contain 'RSA'. Start the agent, add your keys?"
AWS_KEY_NAME=$(make_key_name)
info "Syncing keys... "
if ! aws ec2 describe-key-pairs --key-name "$AWS_KEY_NAME" &>/dev/null; then
aws ec2 import-key-pair --key-name $AWS_KEY_NAME \
--public-key-material "$(ssh-add -L \
| grep -i RSA \
| head -n1 \
| cut -d " " -f 1-2)" &>/dev/null
if ! aws ec2 describe-key-pairs --key-name "$AWS_KEY_NAME" &>/dev/null; then
die "Somehow, importing the key didn't work. Make sure that 'ssh-add -l | grep RSA | head -n1' returns an RSA key?"
else
info "Imported new key $AWS_KEY_NAME."
fi
else
info "Using existing key $AWS_KEY_NAME."
fi
}

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@@ -1,50 +0,0 @@
if ! command -v hcloud >/dev/null; then
warn "Hetzner CLI (hcloud) not found."
fi
if ! [ -f ~/.config/hcloud/cli.toml ]; then
warn "~/.config/hcloud/cli.toml not found."
fi
infra_start() {
COUNT=$1
HETZNER_INSTANCE_TYPE=${HETZNER_INSTANCE_TYPE-cx21}
HETZNER_DATACENTER=${HETZNER_DATACENTER-nbg1-dc3}
HETZNER_IMAGE=${HETZNER_IMAGE-168855}
for I in $(seq 1 $COUNT); do
NAME=$(printf "%s-%03d" $TAG $I)
sep "Starting instance $I/$COUNT"
info " Datacenter: $HETZNER_DATACENTER"
info " Name: $NAME"
info " Instance type: $HETZNER_INSTANCE_TYPE"
hcloud server create \
--type=${HETZNER_INSTANCE_TYPE} \
--datacenter=${HETZNER_DATACENTER} \
--image=${HETZNER_IMAGE} \
--name=$NAME \
--label=tag=$TAG \
--ssh-key ~/.ssh/id_rsa.pub
done
hetzner_get_ips_by_tag $TAG > tags/$TAG/ips.txt
}
infra_stop() {
for ID in $(hetzner_get_ids_by_tag $TAG); do
info "Scheduling deletion of instance $ID..."
hcloud server delete $ID &
done
info "Waiting for deletion to complete..."
wait
}
hetzner_get_ids_by_tag() {
TAG=$1
hcloud server list --selector=tag=$TAG -o json | jq -r .[].name
}
hetzner_get_ips_by_tag() {
TAG=$1
hcloud server list --selector=tag=$TAG -o json | jq -r .[].public_net.ipv4.ip
}

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@@ -1,48 +0,0 @@
infra_start() {
COUNT=$1
sep "Starting $COUNT instances"
info " Region: $OS_REGION_NAME"
info " User: $OS_USERNAME"
info " Flavor: $OS_FLAVOR"
info " Image: $OS_IMAGE"
openstack server create \
--flavor $OS_FLAVOR \
--image $OS_IMAGE \
--key-name $OS_KEY \
--min $COUNT --max $COUNT \
--property workshopctl=$TAG \
$TAG
sep "Waiting for IP addresses to be available"
GOT=0
while [ "$GOT" != "$COUNT" ]; do
echo "Got $GOT/$COUNT IP addresses."
oscli_get_ips_by_tag $TAG > tags/$TAG/ips.txt
GOT="$(wc -l < tags/$TAG/ips.txt)"
done
}
infra_stop() {
info "Counting instances..."
oscli_get_instances_json $TAG |
jq -r .[].Name |
wc -l
info "Deleting instances..."
oscli_get_instances_json $TAG |
jq -r .[].Name |
xargs -P10 -n1 openstack server delete
info "Done."
}
oscli_get_instances_json() {
TAG=$1
openstack server list -f json --name "${TAG}-[0-9]*"
}
oscli_get_ips_by_tag() {
TAG=$1
oscli_get_instances_json $TAG |
jq -r .[].Networks | cut -d= -f2 | cut -d, -f1 | grep . || true
}

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@@ -1,46 +0,0 @@
if ! command -v scw >/dev/null; then
warn "Scaleway CLI (scw) not found."
fi
if ! [ -f ~/.config/scw/config.yaml ]; then
warn "~/.config/scw/config.yaml not found."
fi
infra_start() {
COUNT=$1
SCW_INSTANCE_TYPE=${SCW_INSTANCE_TYPE-DEV1-M}
SCW_ZONE=${SCW_ZONE-fr-par-1}
for I in $(seq 1 $COUNT); do
NAME=$(printf "%s-%03d" $TAG $I)
sep "Starting instance $I/$COUNT"
info " Zone: $SCW_ZONE"
info " Name: $NAME"
info " Instance type: $SCW_INSTANCE_TYPE"
scw instance server create \
type=${SCW_INSTANCE_TYPE} zone=${SCW_ZONE} \
image=ubuntu_bionic name=${NAME}
done
sep
scw_get_ips_by_tag $TAG > tags/$TAG/ips.txt
}
infra_stop() {
info "Counting instances..."
scw_get_ids_by_tag $TAG | wc -l
info "Deleting instances..."
scw_get_ids_by_tag $TAG |
xargs -n1 -P10 -I@@ \
scw instance server delete force-shutdown=true server-id=@@
}
scw_get_ids_by_tag() {
TAG=$1
scw instance server list name=$TAG -o json | jq -r .[].id
}
scw_get_ips_by_tag() {
TAG=$1
scw instance server list name=$TAG -o json | jq -r .[].public_ip.address
}

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@@ -1,23 +0,0 @@
infra_disableaddrchecks() {
die "unimplemented"
}
infra_list() {
die "unimplemented"
}
infra_opensg() {
die "unimplemented"
}
infra_quotas() {
die "unimplemented"
}
infra_start() {
die "unimplemented"
}
infra_stop() {
die "unimplemented"
}

View File

@@ -37,7 +37,7 @@ def system(cmd):
td = str(t2-t1)[:5]
f.write(bold("[{}] in {}s\n".format(retcode, td)))
STEP += 1
with open(os.environ["HOME"] + "/.bash_history", "a") as f:
with open("/home/ubuntu/.bash_history", "a") as f:
f.write("{}\n".format(cmd))
if retcode != 0:
msg = "The following command failed with exit code {}:\n".format(retcode)

View File

@@ -18,13 +18,7 @@ pssh() {
echo "[parallel-ssh] $@"
export PSSH=$(which pssh || which parallel-ssh)
if [ "$INFRACLASS" = hetzner ]; then
LOGIN=root
else
LOGIN=ubuntu
fi
$PSSH -h $HOSTFILE -l $LOGIN \
$PSSH -h $HOSTFILE -l ubuntu \
--par 100 \
-O LogLevel=ERROR \
-O UserKnownHostsFile=/dev/null \

View File

@@ -1,44 +1,21 @@
#!/usr/bin/env python
"""
There are two ways to use this script:
1. Pass a tag name as a single argument.
It will then take the clusters corresponding to that tag, and assign one
domain name per cluster. Currently it gets the domains from a hard-coded
path. There should be more domains than clusters.
Example: ./map-dns.py 2020-08-15-jp
2. Pass a domain as the 1st argument, and IP addresses then.
It will configure the domain with the listed IP addresses.
Example: ./map-dns.py open-duck.site 1.2.3.4 2.3.4.5 3.4.5.6
In both cases, the domains should be configured to use GANDI LiveDNS.
"""
import os
import requests
import sys
import yaml
# configurable stuff
domains_file = "../../plentydomains/domains.txt"
config_file = os.path.join(
os.environ["HOME"], ".config/gandi/config.yaml")
tag = None
tag = "test"
apiurl = "https://dns.api.gandi.net/api/v5/domains"
if len(sys.argv) == 2:
tag = sys.argv[1]
domains = open(domains_file).read().split()
ips = open(f"tags/{tag}/ips.txt").read().split()
settings_file = f"tags/{tag}/settings.yaml"
clustersize = yaml.safe_load(open(settings_file))["clustersize"]
else:
domains = [sys.argv[1]]
ips = sys.argv[2:]
clustersize = len(ips)
# inferred stuff
domains = open(domains_file).read().split()
apikey = yaml.safe_load(open(config_file))["apirest"]["key"]
ips = open(f"tags/{tag}/ips.txt").read().split()
settings_file = f"tags/{tag}/settings.yaml"
clustersize = yaml.safe_load(open(settings_file))["clustersize"]
# now do the fucking work
while domains and ips:

View File

@@ -6,8 +6,8 @@ clustersize: 1
# The hostname of each node will be clusterprefix + a number
clusterprefix: node
# Jinja2 template to use to generate ready-to-cut cards
cards_template: cards.html
# Jinja2 template to use to generate ready-to-cut
cards_template: clusters.csv
# Use "Letter" in the US, and "A4" everywhere else
paper_size: Letter

View File

@@ -1,7 +1,7 @@
resource "openstack_compute_instance_v2" "machine" {
count = "${var.count}"
name = "${format("%s-%04d", "${var.prefix}", count.index+1)}"
image_name = "Ubuntu 18.04.4 20200324"
image_name = "Ubuntu 16.04.5 (Xenial Xerus)"
flavor_name = "${var.flavor}"
security_groups = ["${openstack_networking_secgroup_v2.full_access.name}"]
key_pair = "${openstack_compute_keypair_v2.ssh_deploy_key.name}"

View File

@@ -15,6 +15,7 @@ for lib in lib/*.sh; do
done
DEPENDENCIES="
aws
ssh
curl
jq

View File

@@ -1,6 +1,6 @@
# Uncomment and/or edit one of the the following lines if necessary.
#/ /kube-halfday.yml.html 200!
/ /kube-fullday.yml.html 200!
#/ /kube-fullday.yml.html 200!
#/ /kube-twodays.yml.html 200!
# And this allows to do "git clone https://container.training".
@@ -8,17 +8,16 @@
#/dockermastery https://www.udemy.com/course/docker-mastery/?referralCode=1410924A733D33635CCB
#/kubernetesmastery https://www.udemy.com/course/kubernetesmastery/?referralCode=7E09090AF9B79E6C283F
/dockermastery https://www.udemy.com/course/docker-mastery/?couponCode=DOCKERALLDAY
/kubernetesmastery https://www.udemy.com/course/kubernetesmastery/?couponCode=DOCKERALLDAY
/dockermastery https://www.udemy.com/course/docker-mastery/?couponCode=SWEETFEBSALEC1
/kubernetesmastery https://www.udemy.com/course/kubernetesmastery/?couponCode=SWEETFEBSALEC4
# Shortlink for the QRCode
/q /qrcode.html 200
# Shortlinks for next training in English and French
#/next https://www.eventbrite.com/e/livestream-intensive-kubernetes-bootcamp-tickets-103262336428
/next https://skillsmatter.com/courses/700-advanced-kubernetes-concepts-workshop-jerome-petazzoni
/next https://www.eventbrite.com/e/livestream-intensive-kubernetes-bootcamp-tickets-103262336428
/hi5 https://enix.io/fr/services/formation/online/
/chat https://gitter.im/jpetazzo/workshop-20200912-online
/vms https://docs.google.com/spreadsheets/d/1LkxnxGpMWWWTdpDhz-mF1noYrfc_BlI8yi71EyxwmM4
/ /intro.yml.html 200!
/vms https://docs.google.com/spreadsheets/d/1u91MzRvUiZiI55x_sto1kk9LP4QoxqOBjvjhZCeyjU4/edit
/chat https://gitter.im/jpetazzo/training-20200707-online

View File

@@ -233,7 +233,7 @@ def setup_tmux_and_ssh():
ipaddr = "$IPADDR"
uid = os.getuid()
raise Exception(r"""
raise Exception("""
1. If you're running this directly from a node:
tmux
@@ -247,16 +247,6 @@ rm -f /tmp/tmux-{uid}/default && ssh -t -L /tmp/tmux-{uid}/default:/tmp/tmux-100
3. If you cannot control a remote tmux:
tmux new-session ssh docker@{ipaddr}
4. If you are running this locally with a remote cluster, make sure your prompt has the expected format:
tmux
IPADDR=$(
kubectl get nodes -o json |
jq -r '.items[0].status.addresses[] | select(.type=="ExternalIP") | .address'
)
export PS1="\n[{ipaddr}] \u@\h:\w\n\$ "
""".format(uid=uid, ipaddr=ipaddr))
else:
logging.info("Found tmux session. Trying to acquire shell prompt.")

View File

@@ -1,4 +1,4 @@
# Logging
# Logging (extra material)
In this chapter, we will explain the different ways to send logs from containers.

View File

@@ -1,72 +1,3 @@
- date: [2020-10-05, 2020-10-06]
country: www
city: streaming
event: ENIX SAS
speaker: jpetazzo
title: Docker intensif (en français)
lang: fr
attend: https://enix.io/fr/services/formation/online/
- date: [2020-10-07, 2020-10-09]
country: www
city: streaming
event: ENIX SAS
speaker: jpetazzo
title: Fondamentaux Kubernetes (en français)
lang: fr
attend: https://enix.io/fr/services/formation/online/
- date: 2020-10-12
country: www
city: streaming
event: ENIX SAS
speaker: jpetazzo
title: Packaging pour Kubernetes (en français)
lang: fr
attend: https://enix.io/fr/services/formation/online/
- date: [2020-10-13, 2020-10-14]
country: www
city: streaming
event: ENIX SAS
speaker: jpetazzo
title: Kubernetes avancé (en français)
lang: fr
attend: https://enix.io/fr/services/formation/online/
- date: [2020-10-19, 2020-10-20]
country: www
city: streaming
event: ENIX SAS
speaker: jpetazzo
title: Opérer Kubernetes (en français)
lang: fr
attend: https://enix.io/fr/services/formation/online/
- date: [2020-09-28, 2020-10-01]
country: www
city: streaming
event: Skills Matter
speaker: jpetazzo
title: Advanced Kubernetes Concepts
attend: https://skillsmatter.com/courses/700-advanced-kubernetes-concepts-workshop-jerome-petazzoni
- date: [2020-08-29, 2020-08-30]
country: www
city: streaming
event: fwdays
speaker: jpetazzo
title: Intensive Docker Online Workshop
attend: https://fwdays.com/en/event/intensive-docker-workshop
- date: [2020-09-12, 2020-09-13]
country: www
city: streaming
event: fwdays
speaker: jpetazzo
title: Kubernetes Intensive Online Workshop
attend: https://fwdays.com/en/event/kubernetes-intensive-workshop
- date: [2020-07-07, 2020-07-09]
country: www
city: streaming

70
slides/intro-fullday.yml Normal file
View File

@@ -0,0 +1,70 @@
title: |
Introduction
to Containers
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/
#slidenumberprefix: "#SomeHashTag &mdash; "
exclude:
- self-paced
content:
- shared/title.md
- logistics.md
- containers/intro.md
- shared/about-slides.md
- shared/chat-room-im.md
#- shared/chat-room-zoom-meeting.md
#- shared/chat-room-zoom-webinar.md
- shared/toc.md
-
#- containers/Docker_Overview.md
#- containers/Docker_History.md
- containers/Training_Environment.md
#- containers/Installing_Docker.md
- containers/First_Containers.md
- containers/Background_Containers.md
#- containers/Start_And_Attach.md
- containers/Naming_And_Inspecting.md
#- containers/Labels.md
- containers/Getting_Inside.md
- containers/Initial_Images.md
-
- containers/Building_Images_Interactively.md
- containers/Building_Images_With_Dockerfiles.md
- containers/Cmd_And_Entrypoint.md
- containers/Copying_Files_During_Build.md
- containers/Exercise_Dockerfile_Basic.md
-
- containers/Container_Networking_Basics.md
#- containers/Network_Drivers.md
#- containers/Container_Network_Model.md
- containers/Local_Development_Workflow.md
- containers/Compose_For_Dev_Stacks.md
- containers/Exercise_Composefile.md
-
- containers/Multi_Stage_Builds.md
#- containers/Publishing_To_Docker_Hub.md
- containers/Dockerfile_Tips.md
- containers/Exercise_Dockerfile_Advanced.md
#- containers/Docker_Machine.md
#- containers/Advanced_Dockerfiles.md
#- containers/Init_Systems.md
#- containers/Application_Configuration.md
#- containers/Logging.md
#- containers/Namespaces_Cgroups.md
#- containers/Copy_On_Write.md
#- containers/Containers_From_Scratch.md
#- containers/Container_Engines.md
#- containers/Pods_Anatomy.md
#- containers/Ecosystem.md
#- containers/Orchestration_Overview.md
-
- shared/thankyou.md
- containers/links.md

View File

@@ -0,0 +1,70 @@
title: |
Introduction
to Containers
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/
#slidenumberprefix: "#SomeHashTag &mdash; "
exclude:
- in-person
content:
- shared/title.md
# - shared/logistics.md
- containers/intro.md
- shared/about-slides.md
#- shared/chat-room-im.md
#- shared/chat-room-zoom-meeting.md
#- shared/chat-room-zoom-webinar.md
- shared/toc.md
- - containers/Docker_Overview.md
- containers/Docker_History.md
- containers/Training_Environment.md
- containers/Installing_Docker.md
- containers/First_Containers.md
- containers/Background_Containers.md
- containers/Start_And_Attach.md
- - containers/Initial_Images.md
- containers/Building_Images_Interactively.md
- containers/Building_Images_With_Dockerfiles.md
- containers/Cmd_And_Entrypoint.md
- containers/Copying_Files_During_Build.md
- containers/Exercise_Dockerfile_Basic.md
- - containers/Multi_Stage_Builds.md
- containers/Publishing_To_Docker_Hub.md
- containers/Dockerfile_Tips.md
- containers/Exercise_Dockerfile_Advanced.md
- - containers/Naming_And_Inspecting.md
- containers/Labels.md
- containers/Getting_Inside.md
- - containers/Container_Networking_Basics.md
- containers/Network_Drivers.md
- containers/Container_Network_Model.md
#- containers/Connecting_Containers_With_Links.md
- containers/Ambassadors.md
- - containers/Local_Development_Workflow.md
- containers/Windows_Containers.md
- containers/Working_With_Volumes.md
- containers/Compose_For_Dev_Stacks.md
- containers/Exercise_Composefile.md
- containers/Docker_Machine.md
- - containers/Advanced_Dockerfiles.md
- containers/Init_Systems.md
- containers/Application_Configuration.md
- containers/Logging.md
- containers/Resource_Limits.md
- - containers/Namespaces_Cgroups.md
- containers/Copy_On_Write.md
#- containers/Containers_From_Scratch.md
- - containers/Container_Engines.md
- containers/Pods_Anatomy.md
- containers/Ecosystem.md
- containers/Orchestration_Overview.md
- shared/thankyou.md
- containers/links.md

71
slides/intro.yml Normal file
View File

@@ -0,0 +1,71 @@
title: |
Intensive
Docker
Bootcamp
#chat: "[Slack](https://dockercommunity.slack.com/messages/C7GKACWDV)"
chat: "[Gitter](https://gitter.im/jpetazzo/training-20200707-online)"
gitrepo: github.com/jpetazzo/container.training
slides: https://2020-07-ardan.container.training/
#slidenumberprefix: "#SomeHashTag &mdash; "
exclude:
- self-paced
content:
- shared/title.md
- logistics.md
- containers/intro.md
- shared/about-slides.md
- shared/chat-room-im.md
#- shared/chat-room-zoom-meeting.md
#- shared/chat-room-zoom-webinar.md
- shared/toc.md
- # DAY 1
#- containers/Docker_Overview.md
#- containers/Docker_History.md
- containers/Training_Environment.md
- containers/First_Containers.md
- containers/Background_Containers.md
- containers/Initial_Images.md
-
- containers/Building_Images_Interactively.md
- containers/Building_Images_With_Dockerfiles.md
- containers/Cmd_And_Entrypoint.md
- containers/Copying_Files_During_Build.md
- containers/Exercise_Dockerfile_Basic.md
- # DAY 2
- containers/Publishing_To_Docker_Hub.md
- containers/Naming_And_Inspecting.md
- containers/Labels.md
- containers/Start_And_Attach.md
- containers/Getting_Inside.md
- containers/Resource_Limits.md
-
- containers/Dockerfile_Tips.md
- containers/Multi_Stage_Builds.md
- containers/Advanced_Dockerfiles.md
- containers/Exercise_Dockerfile_Advanced.md
- # DAY 3
- containers/Container_Networking_Basics.md
- containers/Network_Drivers.md
- containers/Container_Network_Model.md
-
- containers/Local_Development_Workflow.md
- containers/Compose_For_Dev_Stacks.md
- containers/Exercise_Composefile.md
- containers/Logging.md
#- containers/Working_With_Volumes.md
#- containers/Application_Configuration.md
- shared/thankyou.md
#-
#- containers/Docker_Machine.md
#- containers/Ambassadors.md
#- containers/Namespaces_Cgroups.md
#- containers/Copy_On_Write.md
#- containers/Containers_From_Scratch.md
#- containers/Pods_Anatomy.md
#- containers/Ecosystem.md

View File

@@ -118,7 +118,7 @@
- [HTTP basic auth](https://en.wikipedia.org/wiki/Basic_access_authentication)
(carrying user and password in an HTTP header; [deprecated since Kubernetes 1.19](https://github.com/kubernetes/kubernetes/pull/89069))
(carrying user and password in an HTTP header)
- Authentication proxy
@@ -749,7 +749,7 @@ class: extra-details
:EN:- Authentication and authorization in Kubernetes
:EN:- Authentication with tokens and certificates
:EN:- Authorization with RBAC (Role-Based Access Control)
:EN:- Aithorization with RBAC (Role-Based Access Control)
:EN:- Restricting permissions with Service Accounts
:EN:- Working with Roles, Cluster Roles, Role Bindings, etc.

View File

@@ -176,8 +176,12 @@ class: extra-details
- can't express parallelism or completions of Jobs
- can't express Pods with multiple containers
- can't express healthchecks, resource limits
- etc.
- `kubectl create` and `kubectl run` are *helpers* that generate YAML manifests
- If we write these manifests ourselves, we can use all features and options

View File

@@ -210,8 +210,6 @@
(through files that get created in the container filesystem)
- That second link also includes a list of all the fields that can be used with the downward API
---
## Environment variables, pros and cons
@@ -536,8 +534,6 @@ spec:
---
class: extra-details
## Differences between configmaps and secrets
- Secrets are base64-encoded when shown with `kubectl get secrets -o yaml`
@@ -552,29 +548,6 @@ class: extra-details
(since they are two different kinds of resources)
---
class: extra-details
## Immutable ConfigMaps and Secrets
- Since Kubernetes 1.19, it is possible to mark a ConfigMap or Secret as *immutable*
```bash
kubectl patch configmap xyz --patch='{"immutable": true}'
```
- This brings performance improvements when using lots of ConfigMaps and Secrets
(lots = tens of thousands)
- Once a ConfigMap or Secret has been marked as immutable:
- its content cannot be changed anymore
- the `immutable` field can't be changed back either
- the only way to change it is to delete and re-create it
- Pods using it will have to be re-created as well
???
:EN:- Managing application configuration

View File

@@ -52,7 +52,7 @@
<!-- ##VERSION## -->
- Unfortunately, as of Kubernetes 1.19, the CLI cannot create daemon sets
- Unfortunately, as of Kubernetes 1.17, the CLI cannot create daemon sets
--

View File

@@ -485,8 +485,6 @@ spec:
---
class: extra-details
## Using multiple ingress controllers
- You can have multiple ingress controllers active simultaneously
@@ -497,13 +495,11 @@ class: extra-details
(e.g. one for internal, another for external traffic)
- To indicate which ingress controller should be used by a given Ingress resouce:
- The `kubernetes.io/ingress.class` annotation can be used to tell which one to use
- before Kubernetes 1.18, use the `kubernetes.io/ingress.class` annotation
- It's OK if multiple ingress controllers configure the same resource
- since Kubernetes 1.18, use the `ingressClassName` field
<br/>
(which should refer to an existing `IngressClass` resource)
(it just means that the service will be accessible through multiple paths)
---
@@ -539,9 +535,9 @@ class: extra-details
- [ingress.kubernetes.io/rewrite-target: /](https://github.com/kubernetes/contrib/tree/master/ingress/controllers/nginx/examples/rewrite)
- The Ingress spec stabilized in Kubernetes 1.19 ...
- This should eventually stabilize
... without specifying these features! 😭
(remember that ingresses are currently `apiVersion: networking.k8s.io/v1beta1`)
---

View File

@@ -296,7 +296,7 @@ class: extra-details
- When using `kubectl create deployment`, we cannot indicate the command to execute
(at least, not in Kubernetes 1.18; but that changed in Kubernetes 1.19)
(at least, not in Kubernetes 1.18)
- We can:
@@ -338,25 +338,12 @@ class: extra-details
kubectl get all
```
<!-- ```hide kubectl wait pod --selector=app=pingpong --for condition=ready ``` -->
<!-- ```hide kubectl wait pod --selector=run=pingpong --for condition=ready ``` -->
]
---
class: extra-details
## In Kubernetes 1.19
- Since Kubernetes 1.19, we can specify the command to run
- The command must be passed after two dashes:
```bash
kubectl create deployment pingpong --image=alpine -- ping 127.1
```
---
## Viewing container output
- Let's use the `kubectl logs` command
@@ -507,7 +494,9 @@ We'll see later how to address that shortcoming.
```key ^J```
```check```
```key ^D```
```tmux select-pane -t 1```
```key ^C```
```key ^D```
-->
]

View File

@@ -149,28 +149,6 @@
---
class: extra-details
## Supporting other CPU architectures
- The `jpetazzo/httpenv` image is currently only available for `x86_64`
(the "classic" Intel 64 bits architecture found on most PCs and Macs)
- That image won't work on other architectures
(e.g. Raspberry Pi or other ARM-based machines)
- Note that Docker supports [multi-arch](https://www.docker.com/blog/multi-arch-build-and-images-the-simple-way/) images
(so *technically* we could make it work across multiple architectures)
- If you want to build `httpenv` for your own platform, here is the source:
https://github.com/jpetazzo/httpenv
---
## Creating a deployment for our HTTP server
- We will create a deployment with `kubectl create deployment`

View File

@@ -191,8 +191,6 @@ are a few tools that can help us.*
## Developer experience
*These questions constitute a quick "smoke test" for our strategy:*
- How do we on-board a new developer?
- What do they need to install to get a dev stack?
@@ -201,6 +199,8 @@ are a few tools that can help us.*
- How does someone add a component to a stack?
*These questions are good "sanity checks" to validate our strategy!*
---
## Some guidelines

View File

@@ -160,7 +160,7 @@
- Check that our Consul clusters has 3 members indeed:
```bash
kubectl exec persistentconsul-0 -- consul members
kubectl exec persistentconsul-0 consul members
```
]

View File

@@ -34,11 +34,11 @@
- Download the `kubectl` binary from one of these links:
[Linux](https://storage.googleapis.com/kubernetes-release/release/v1.18.8/bin/linux/amd64/kubectl)
[Linux](https://storage.googleapis.com/kubernetes-release/release/v1.15.3/bin/linux/amd64/kubectl)
|
[macOS](https://storage.googleapis.com/kubernetes-release/release/v1.18.8/bin/darwin/amd64/kubectl)
[macOS](https://storage.googleapis.com/kubernetes-release/release/v1.15.3/bin/darwin/amd64/kubectl)
|
[Windows](https://storage.googleapis.com/kubernetes-release/release/v1.18.8/bin/windows/amd64/kubectl.exe)
[Windows](https://storage.googleapis.com/kubernetes-release/release/v1.15.3/bin/windows/amd64/kubectl.exe)
- On Linux and macOS, make the binary executable with `chmod +x kubectl`

View File

@@ -76,7 +76,7 @@ Exactly what we need!
sudo chmod +x /usr/local/bin/stern
```
- On macOS, we can also `brew install stern` or `sudo port install stern`
- On macOS, we can also `brew install stern` or `port install stern`
<!-- ##VERSION## -->

View File

@@ -387,7 +387,7 @@ spec:
- Get a shell in the pod, as the `postgres` user:
```bash
kubectl exec -ti postgres-0 -- su postgres
kubectl exec -ti postgres-0 su postgres
```
<!--
@@ -577,7 +577,7 @@ By "disrupt" we mean: "disconnect it from the network".
- Get a shell on the pod:
```bash
kubectl exec -ti postgres-0 -- su postgres
kubectl exec -ti postgres-0 su postgres
```
<!--

View File

@@ -297,7 +297,7 @@ nodes and encryption of gossip traffic) were removed for simplicity.
- Check the health of the cluster:
```bash
kubectl exec consul-0 -- consul members
kubectl exec consul-0 consul members
```
]

View File

@@ -1,122 +0,0 @@
title: |
Kubernetes
Intensive
Workshop
chat: "[Gitter](https://gitter.im/jpetazzo/workshop-20200912-online)"
gitrepo: github.com/jpetazzo/container.training
slides: https://2020-09-fwdays.container.training/
slidenumberprefix:
<a href="https://fwdays.com/">fwdays</a>
&mdash;
<a href="https://container.training/">container.training</a>
&mdash;
<a href="https://twitter.com/jpetazzo">@jpetazzo</a>
&mdash;
&nbsp;
exclude:
- self-paced
content:
- shared/title.md
- logistics.md
- k8s/intro.md
- shared/about-slides.md
- shared/chat-room-im.md
#- shared/chat-room-zoom-meeting.md
#- shared/chat-room-zoom-webinar.md
- shared/toc.md
-
- shared/prereqs.md
#- shared/webssh.md
- shared/connecting.md
#- k8s/versions-k8s.md
- shared/sampleapp.md
#- shared/composescale.md
#- shared/hastyconclusions.md
- shared/composedown.md
- k8s/concepts-k8s.md
- k8s/kubectlget.md
- k8s/kubectl-run.md
-
- k8s/labels-annotations.md
- k8s/kubectl-logs.md
- k8s/logs-cli.md
- shared/declarative.md
- k8s/declarative.md
- k8s/deploymentslideshow.md
- k8s/kubenet.md
- k8s/kubectlexpose.md
- k8s/shippingimages.md
#- k8s/buildshiprun-selfhosted.md
- k8s/buildshiprun-dockerhub.md
- k8s/ourapponkube.md
#- k8s/exercise-wordsmith.md
-
- k8s/yamldeploy.md
#- k8s/setup-managed.md
#- k8s/setup-selfhosted.md
#- k8s/dashboard.md
#- k8s/kubectlscale.md
- k8s/scalingdockercoins.md
- shared/hastyconclusions.md
- k8s/daemonset.md
#- k8s/dryrun.md
#- k8s/exercise-yaml.md
#- k8s/localkubeconfig.md
#- k8s/accessinternal.md
#- k8s/kubectlproxy.md
- k8s/rollout.md
#- k8s/healthchecks-more.md
#- k8s/record.md
-
- k8s/namespaces.md
- k8s/ingress.md
#- k8s/kustomize.md
#- k8s/helm-intro.md
#- k8s/helm-chart-format.md
#- k8s/helm-create-basic-chart.md
#- k8s/helm-create-better-chart.md
#- k8s/helm-secrets.md
#- k8s/exercise-helm.md
#- k8s/create-chart.md
#- k8s/create-more-charts.md
#- k8s/csr-api.md
#- k8s/openid-connect.md
#- k8s/podsecuritypolicy.md
- k8s/volumes.md
#- k8s/exercise-configmap.md
#- k8s/build-with-docker.md
#- k8s/build-with-kaniko.md
- k8s/configuration.md
#- k8s/logs-centralized.md
#- k8s/prometheus.md
#- k8s/extending-api.md
#- k8s/operators.md
#- k8s/operators-design.md
#- k8s/staticpods.md
#- k8s/owners-and-dependents.md
#- k8s/gitworkflows.md
- k8s/setup-overview.md
- k8s/setup-devel.md
#- k8s/whatsnext.md
#- k8s/lastwords.md
- k8s/links.md
- shared/thankyou.md
-
- |
# (Extra content)
- k8s/healthchecks.md
- k8s/batch-jobs.md
- k8s/netpol.md
- k8s/authn-authz.md
-
- |
# (More extra content)
- k8s/statefulsets.md
- k8s/local-persistent-volumes.md
- k8s/portworx.md

View File

@@ -1,16 +1,16 @@
## Intros
- Hello! We are:
- Hello! I'm Jérôme Petazzoni ([@jpetazzo](https://twitter.com/jpetazzo))
- .emoji[👷🏻‍♀️] AJ ([@s0ulshake](https://twitter.com/s0ulshake), [EphemeraSearch](https://ephemerasearch.com/))
- The training will run Tue/Wed/Thu:
- .emoji[🐳] Jérôme ([@jpetazzo](https://twitter.com/jpetazzo), Enix SAS)
- 9am-1pm PDT (aka Pacific)
- noon-4pm EDT (aka Eastern)
- 6pm-10pm CEST (aka Europe)
- The workshop will run from 10:00 to 15:00 (EEST timezone, GMT+3)
- There will be short breaks every hour
- We will have short breaks at 11:10 and 13:50 (approximately!)
- And a longer lunch break at 12:20 (about 30 minutes)
(And a longer break every two hours)
- Feel free to interrupt for questions at any time

View File

@@ -28,7 +28,7 @@
(then open the file `@@HTML@@`)
- You will find new versions of these slides on:
- You will to find new versions of these slides on:
https://container.training/