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Customizations for Dijon
This commit is contained in:
Jerome Petazzoni
@@ -1,4 +1,4 @@
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# Uncomment and/or edit one of the the following lines if necessary.
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#/ /kube-halfday.yml.html 200
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#/ /kube-fullday.yml.html 200
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#/ /kube-twodays.yml.html 200
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/ /kube-twodays.yml.html 200
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@@ -57,38 +57,6 @@ And *then* it is time to look at orchestration!
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---
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## Namespaces
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- Namespaces let you run multiple identical stacks side by side
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- Two namespaces (e.g. `blue` and `green`) can each have their own `redis` service
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- Each of the two `redis` services has its own `ClusterIP`
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- CoreDNS creates two entries, mapping to these two `ClusterIP` addresses:
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`redis.blue.svc.cluster.local` and `redis.green.svc.cluster.local`
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- Pods in the `blue` namespace get a *search suffix* of `blue.svc.cluster.local`
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- As a result, resolving `redis` from a pod in the `blue` namespace yields the "local" `redis`
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.warning[This does not provide *isolation*! That would be the job of network policies.]
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---
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## Relevant sections
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- [Namespaces](kube-selfpaced.yml.html#toc-namespaces)
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- [Network Policies](kube-selfpaced.yml.html#toc-network-policies)
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- [Role-Based Access Control](kube-selfpaced.yml.html#toc-authentication-and-authorization)
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(covers permissions model, user and service accounts management ...)
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---
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## Stateful services (databases etc.)
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- As a first step, it is wiser to keep stateful services *outside* of the cluster
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@@ -134,77 +102,6 @@ And *then* it is time to look at orchestration!
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---
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## HTTP traffic handling
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- *Services* are layer 4 constructs
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- HTTP is a layer 7 protocol
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- It is handled by *ingresses* (a different resource kind)
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- *Ingresses* allow:
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- virtual host routing
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- session stickiness
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- URI mapping
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- and much more!
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- [This section](kube-selfpaced.yml.html#toc-exposing-http-services-with-ingress-resources) shows how to expose multiple HTTP apps using [Træfik](https://docs.traefik.io/user-guide/kubernetes/)
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---
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## Logging
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- Logging is delegated to the container engine
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- Logs are exposed through the API
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- Logs are also accessible through local files (`/var/log/containers`)
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- Log shipping to a central platform is usually done through these files
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(e.g. with an agent bind-mounting the log directory)
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- [This section](kube-selfpaced.yml.html#toc-centralized-logging) shows how to do that with [Fluentd](https://docs.fluentd.org/v0.12/articles/kubernetes-fluentd) and the EFK stack
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---
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## Metrics
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- The kubelet embeds [cAdvisor](https://github.com/google/cadvisor), which exposes container metrics
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(cAdvisor might be separated in the future for more flexibility)
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- It is a good idea to start with [Prometheus](https://prometheus.io/)
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(even if you end up using something else)
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- Starting from Kubernetes 1.8, we can use the [Metrics API](https://kubernetes.io/docs/tasks/debug-application-cluster/core-metrics-pipeline/)
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- [Heapster](https://github.com/kubernetes/heapster) was a popular add-on
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(but is being [deprecated](https://github.com/kubernetes/heapster/blob/master/docs/deprecation.md) starting with Kubernetes 1.11)
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---
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## Managing the configuration of our applications
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- Two constructs are particularly useful: secrets and config maps
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- They allow to expose arbitrary information to our containers
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- **Avoid** storing configuration in container images
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(There are some exceptions to that rule, but it's generally a Bad Idea)
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- **Never** store sensitive information in container images
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(It's the container equivalent of the password on a post-it note on your screen)
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- [This section](kube-selfpaced.yml.html#toc-managing-configuration) shows how to manage app config with config maps (among others)
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---
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## Managing stack deployments
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- The best deployment tool will vary, depending on:
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@@ -1,14 +1,14 @@
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title: |
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Deploying and Scaling Microservices
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with Kubernetes
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Déployer ses applications
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avec Kubernetes
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#chat: "[Slack](https://dockercommunity.slack.com/messages/C7GKACWDV)"
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#chat: "[Gitter](https://gitter.im/jpetazzo/workshop-yyyymmdd-city)"
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chat: "In person!"
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chat: "[Gitter](https://gitter.im/jpetazzo/training-20190311-dijon)"
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#chat: "In person!"
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gitrepo: github.com/jpetazzo/container.training
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slides: http://container.training/
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slides: http://kube-2019-03.container.training/
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exclude:
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- self-paced
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@@ -48,16 +48,16 @@ chapters:
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- k8s/netpol.md
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- k8s/authn-authz.md
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- - k8s/ingress.md
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- k8s/gitworkflows.md
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# - k8s/gitworkflows.md
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- k8s/prometheus.md
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- - k8s/volumes.md
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- k8s/build-with-docker.md
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- k8s/build-with-kaniko.md
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- k8s/configuration.md
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- - k8s/owners-and-dependents.md
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- k8s/statefulsets.md
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#- - k8s/owners-and-dependents.md
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- - k8s/statefulsets.md
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- k8s/portworx.md
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- k8s/staticpods.md
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# - k8s/staticpods.md
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- - k8s/whatsnext.md
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- k8s/links.md
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- shared/thankyou.md
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@@ -1,30 +1,14 @@
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## Intros
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- This slide should be customized by the tutorial instructor(s).
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- Hello! We are:
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- .emoji[👩🏻🏫] Ann O'Nymous ([@...](https://twitter.com/...), Megacorp Inc)
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- .emoji[👨🏾🎓] Stu Dent ([@...](https://twitter.com/...), University of Wakanda)
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<!-- .dummy[
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- .emoji[👷🏻♀️] AJ ([@s0ulshake](https://twitter.com/s0ulshake), Travis CI)
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- .emoji[🚁] Alexandre ([@alexbuisine](https://twitter.com/alexbuisine), Enix SAS)
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- .emoji[🐳] Jérôme ([@jpetazzo](https://twitter.com/jpetazzo), Enix SAS)
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- The workshop will run from 9am to 5pm
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- .emoji[⛵] Jérémy ([@jeremygarrouste](twitter.com/jeremygarrouste), Inpiwee)
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- .emoji[🎧] Romain ([@rdegez](https://twitter.com/rdegez), Enix SAS)
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] -->
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- The workshop will run from ...
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- There will be a lunch break at ...
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- There will be a lunch break
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(And coffee breaks!)
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