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Kubernetes

Gain access to kubernetes cluster

  • brew install gettext
  • install kubectl
  • install gcloud
  • gcloud auth login
  • gcloud container clusters get-credentials cpdp-gke --zone us-central1-a --project twitterbot-180604

Config files

  • cpdpbot.yml - cpdpbot (Twitter bot) deployment.
  • elasticsearch.yml - Elasticsearch deployment and service.
  • gunicorn.yml - Gunicorn deployment and service.
  • ingress.yml - Main ingress.
  • namespaces.yml - All namespaces.
  • pg_proxy.yml - Postgres CloudSQL Proxy
  • redis.yml - Redis deployment and service.
  • secrets-production.yml - Secrets for production
  • secrets-beta.yml - Secrets for beta
  • secrets-staging.yml - Secrets for staging
  • job - manifest file for job.
  • cronjob - manifest file for cronjob.

Namespaces

Most of our resources are deployed into 3 namespaces: staging, beta and production therefore most commands should specify either of these 3 namespaces e.g.

  • kubectl get pods -n staging - look up all pods in namespace staging
  • kubectl get services -n staging - look up all services in namespace staging
  • kubectl logs update-documents-69567775bc-hr86t -n staging - look at logs from pod update-documents-69567775bc-hr86t

Make changes to Docker images

The following Docker images rarely change so you have to update and build/push them manually when there is a change. Run the following snippets depending on which docker image you changed:

  • docker build -t cpdbdev/postgres:9.6 docker/postgres && docker push cpdbdev/postgres:9.6
  • docker build -t cpdbdev/remote_syslog2:latest docker/remote_syslog2 && docker push cpdbdev/remote_syslog2:latest

Add kubernetes secrets

Secrets for staging, beta and production are stored in following files kubernetes/secrets-staging.yml.secret, kubernetes/secrets-beta.yml.secret and kubernetes/secrets-production.yml.secret Run git secret reveal to show the secret manifest file.

Secret values are all base64 encoded by running echo -n <value> | base64 To reveal the secret value echo <base64 encoded string> | base64 -D