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Lari Hotari 6c2edba8b1
Get OS signals passed to container process by using shell built-in "exec" (#59) 
### Changes 

- using "exec" to run a command replaces the shell process with the executed process
- this is required so that the process running in the container is able to receive OS signals
  - explained in https://docs.docker.com/develop/develop-images/dockerfile_best-practices/
    and https://docs.docker.com/engine/reference/builder/#entrypoint
- receiving SIGTERM signal is required for graceful shutdown. This is explained in https://pracucci.com/graceful-shutdown-of-kubernetes-pods.html 

This change might fix issues such as https://github.com/apache/pulsar/issues/6603 . One expectation of this fix is that graceful shutdown would allow Pulsar components such as a bookies to deregistered from Zookeeper properly before shutdown. 

### Motivation

Dockerfile best practices mention that "exec" should be used so that the process running in a container can receive OS signals. This is explained in https://docs.docker.com/develop/develop-images/dockerfile_best-practices/
    and https://docs.docker.com/engine/reference/builder/#entrypoint .  Kubernetes documention explains pod termination in https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle/#pod-termination : "Typically, the container runtime sends a TERM signal to the main process in each container. Once the grace period has expired, the KILL signal is sent to any remaining processes, and the Pod is then deleted from the API Server ."
Currently some issues while running Pulsar are caused by the lack of graceful shutdown. Graceful shutdown isn't happening at all since the Pulsar processes never receive the TERM signal that would allow graceful shutdown. This PR fixes that.

This PR was inspired by https://github.com/kafkaesque-io/pulsar-helm-chart/pull/31
2020-08-30 23:05:49 -06:00
..
_autorecovery.tpl
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_bookkeeper.tpl
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_broker.tpl
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_helpers.tpl
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_toolset.tpl
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_zookeeper.tpl
Add optional user provided zookeeper as metadata store for other components (#38)
2020-07-15 13:19:06 +08:00
autorecovery-configmap.yaml
Publish chart index to gh-pages branch (#3)
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autorecovery-service.yaml
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autorecovery-statefulset.yaml
Get OS signals passed to container process by using shell built-in "exec" (#59)
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bookkeeper-cluster-initialize.yaml
Allow initialization to be set (#53)
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bookkeeper-configmap.yaml
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bookkeeper-pdb.yaml
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bookkeeper-podmonitor.yaml
Add zookeeper metrics port and PodMonitors (#44)
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bookkeeper-service.yaml
Publish chart index to gh-pages branch (#3)
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bookkeeper-statefulset.yaml
Get OS signals passed to container process by using shell built-in "exec" (#59)
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bookkeeper-storageclass.yaml
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broker-cluster-role-binding.yaml
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broker-configmap.yaml
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broker-pdb.yaml
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broker-podmonitor.yaml
Add zookeeper metrics port and PodMonitors (#44)
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broker-rbac.yaml
Fix deprecated values (#49)
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broker-service-account.yaml
Allow to change broker service account annotations (#22)
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broker-service.yaml
Publish chart index to gh-pages branch (#3)
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broker-statefulset.yaml
Get OS signals passed to container process by using shell built-in "exec" (#59)
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dashboard-deployment.yaml
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dashboard-ingress.yaml
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dashboard-service.yaml
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function-worker-configmap.yaml
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grafana-admin-secret.yaml
Decouple credentials from key secrets generation (#7)
2020-04-29 01:27:16 -07:00
grafana-configmap.yaml
Allow Grafana to work with a reverse proxy (#48)
2020-08-12 00:31:23 -07:00
grafana-deployment.yaml
Allow Grafana to work with a reverse proxy (#48)
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grafana-ingress.yaml
Fix deprecated values (#49)
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grafana-service.yaml
add targetport for grafana nad manager service (#37)
2020-07-14 22:14:11 -07:00
keytool.yaml
Fixed apache/pulsar-helm-chart#25 (#27)
2020-06-25 18:33:54 -07:00
namespace.yaml
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prometheus-configmap.yaml
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prometheus-deployment.yaml
Update grafana & prometheus docker images (#8)
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prometheus-pvc.yaml
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prometheus-rbac.yaml
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prometheus-service.yaml
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prometheus-storageclass.yaml
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proxy-configmap.yaml
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proxy-ingress.yaml
Add Ingress to Pulsar Proxy and Pulsar Manager (#42)
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proxy-pdb.yaml
Publish chart index to gh-pages branch (#3)
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proxy-podmonitor.yaml
Add zookeeper metrics port and PodMonitors (#44)
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proxy-service.yaml
Publish chart index to gh-pages branch (#3)
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proxy-statefulset.yaml
Get OS signals passed to container process by using shell built-in "exec" (#59)
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pulsar-cluster-initialize.yaml
Allow initialization to be set (#53)
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pulsar-manager-admin-secret.yaml
Publish chart index to gh-pages branch (#3)
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pulsar-manager-configmap.yaml
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pulsar-manager-deployment.yaml
Fix wrong variable reference in Grafana & Pulsar Manager port (#41)
2020-07-18 10:41:40 +08:00
pulsar-manager-ingress.yaml
Add Ingress to Pulsar Proxy and Pulsar Manager (#42)
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pulsar-manager-service.yaml
add targetport for grafana nad manager service (#37)
2020-07-14 22:14:11 -07:00
tls-cert-internal-issuer.yaml
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tls-certs-internal.yaml
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toolset-configmap.yaml
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toolset-service.yaml
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toolset-statefulset.yaml
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zookeeper-configmap.yaml
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zookeeper-pdb.yaml
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zookeeper-podmonitor.yaml
Add zookeeper metrics port and PodMonitors (#44)
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zookeeper-service.yaml
Publish chart index to gh-pages branch (#3)
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zookeeper-statefulset.yaml
Get OS signals passed to container process by using shell built-in "exec" (#59)
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zookeeper-storageclass.yaml
Publish chart index to gh-pages branch (#3)
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