Rancher Kubernetes Engine (RKE) is a CNCF-certified Kubernetes distribution that runs entirely within Docker containers. It solves the common frustration of installation complexity with Kubernetes by removing most host dependencies and presenting a stable path for deployment, upgrades, and rollbacks.
StackGres is not actively tested with RKE, if you find any problem, please open an issue.
By default, RKE looks for a file called cluster.yml, which contains information about the remote servers and services that will run on servers.
StackGres uses self-signed certificates to enable https on the Web UI, when you are installing StackGres it creates a Certificate Signing Request to the internal CA of Kubernetes, RKE by default do not configure the parameters --cluster-signing-cert-file and --cluster-signing-key-file on the kube-controller-manager, you need to add these lines inside “service” section in your cluster.yaml.
services:
kube-controller:
extra_args:
cluster-signing-cert-file: /etc/kubernetes/ssl/kube-ca.pem
cluster-signing-key-file: /etc/kubernetes/ssl/kube-ca-key.pem
After you’ve updated your cluster.yml, you can deploy your cluster with a simple command. This command assumes the cluster.yml file is in the same directory as where you are running the command.
rke up
INFO[0000] Building Kubernetes cluster
INFO[0000] [dialer] Setup tunnel for host [10.0.0.1]
INFO[0000] [network] Deploying port listener containers
INFO[0000] [network] Pulling image [alpine:latest] on host [10.0.0.1]
...
INFO[0101] Finished building Kubernetes cluster successfully
The last line should read “Finished building Kubernetes cluster successfully” to indicate that your cluster is ready to use. After that continue the instalation of StackGres.