Please provide detailed steps and explanations for each configuration file and command. Explanation of stolon operator's working would also be helpful along with code reference.
I have followed the steps from stolon github doc but not able to start the postgres server. Thank you for the help!
The Stolon operator is a Kubernetes operator that manages PostgreSQL clusters using the Stolon framework. Stolon is a cloud-native PostgreSQL manager that provides high availability, automated failover, and replication. Here's an overview of how the Stolon operator works:
Stolon Keeper:
Stolon Sentinel:
Stolon Proxy:
Stolonctl:
To deploy PostgreSQL using the Stolon operator on OpenShift, follow these detailed steps. I will explain each configuration file and the commands required to set up the deployment.
role.yaml
:
role-binding.yaml
:
role.yaml
to the service account used by Stolon.secret.yaml
:
stolon-keeper_new.yaml
:
stolon-keeper-service.yaml
:
stolon-proxy_new.yaml
:
stolon-proxy-service.yaml
:
stolon-sentinel-service.yaml
:
stolonctl-pod.yaml
:
stolonctl
commands to initialize and manage the Stolon cluster.Create a New Project:
oc new-project <new-namespace>
Create a Service Account:
oc create sa stolon-sa -n <new-namespace>
anyuid
Security Context Constraints (SCC) to the service account:
oc adm policy add-scc-to-user anyuid -z stolon-sa -n <new-namespace>
Assign Required Roles:
role.yaml
and role-binding.yaml
with the new namespace and service account name.oc apply -f role.yaml -n <new-namespace>
oc apply -f role-binding.yaml -n <new-namespace>
Create Secrets:
secret.yaml
is configured correctly for the new namespace.oc apply -f secret.yaml -n <new-namespace>
Deploy Stolon Keeper:
stolon-keeper_new.yaml
and stolon-keeper-service.yaml
with the new namespace.oc apply -f stolon-keeper_new.yaml -n <new-namespace>
oc apply -f stolon-keeper-service.yaml -n <new-namespace>
Deploy Stolon Proxy:
stolon-proxy_new.yaml
and stolon-proxy-service.yaml
with the new namespace.oc apply -f stolon-proxy_new.yaml -n <new-namespace>
oc apply -f stolon-proxy-service.yaml -n <new-namespace>
Deploy Stolon Sentinel:
stolon-sentinel.yaml
and stolon-sentinel-service.yaml
with the new namespace.oc apply -f stolon-sentinel.yaml -n <new-namespace>
oc apply -f stolon-sentinel-service.yaml -n <new-namespace>
Initialize Stolon Cluster:
stolonctl-pod.yaml
with the new namespace.oc apply -f stolonctl-pod.yaml -n <new-namespace>
Verify Deployment:
oc get pods -n <new-namespace>
oc get services -n <new-namespace>
Use the postgres instance:
psql
command:
oc exec -it stolon-keeper-0 -- psql -h stolon-proxy -U stolon -d postgres -W
password :
password1
YAML files can be found in this github gist
By following these steps, you should be able to deploy Stolon on OpenShift successfully. If you encounter any issues, please let me know!