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  1. Deployment guide
  2. Deploying Cinchy
  3. Kubernetes

Use Self-Signed SSL Certs (Kubernetes)

This page details the optional steps that you can take to use self-signed SSL Certificates in a Kubernetes Deployment of Cinchy.

Follow this process only after running the devops.automations script during your initial deployment and each additional time you run the script (such as updating your Cinchy platform), as it wipes out all custom configurations you set up to use a self-signed certificate.

  1. Execute the following commands in any folder to generate the self-signed certificate:

openssl genrsa -des3 -out rootCA.key 4096
openssl req -x509 -new -nodes -key rootCA.key -sha256 -days 1024 -out rootCA.crt
openssl genrsa -out mydomain.com.key 2048
openssl req -new -sha256 -key mydomain.com.key -subj "/C=US/ST=CA/O=MyOrg, Inc./CN=mydomain.com " -out mydomain.com.csr
  1. Create a YAML file located at cinchy.kubernetes/platform_components/base/self-signed-ssl-root-ca.yaml.

  2. Add the following to the YAML file:

apiVersion: v1
kind: ConfigMap
metadata:
  name: self-signed-ca-pemstore
data:
  rootCA.crt: |
    <rootCA.crt>
  1. Add the self signed root CA cert file to the cinchy.kubernetes/environment_kustomizations/cinchy_nonprod/base folder.

  2. Add the yaml code snippet to the cinchy.kubernetes/environment_kustomizations/cinchy_nonprod/base/kustomization.yaml file, changing the below files key value as per your root ca cert file name:

configMapGenerator:
- name: self-signed-ca-pemstore
  behavior: replace
  files:
  - rootCA.crt
  1. Add the following line to the cinchy.kubernetes/platform_components/base/kustomization.yaml file

- self-signed-ssl-root-ca.yaml
  1. Add the below Deployment patchesJson6902 to each of your cinchy.kubernetes/environment_kustomizations/cinchy_nonprod/ENV_NAME/PLATFORM_COMPONENT_NAME/kustomization.yaml files, except base.

  • Ensure that the rootCA.crt file name is matched with ConfigMap data, configMapGenerator files, and the patch subpath.

    - op: add
      path: /spec/template/spec/volumes/-
      value: 
        configMap:
          name: self-signed-ca-pemstore
        name: self-signed-ca-pemstore  
    - op: add
      path: /spec/template/spec/containers/0/volumeMounts/-
      value: 
        mountPath: /etc/ssl/certs/rootCA.crt
        name: self-signed-ca-pemstore
        subPath: rootCA.crt
  1. Once the changes are deployed, verify the root CA cert is available on the pod under /etc/ssl/certs with below command. Make sure to input your own POD_NAME and NAMESPACE:

 kubectl exec -it POD_NAME -n NAMESPACE -- openssl x509 -in /etc/ssl/certs/rootCA.crt -text
PreviousConfigure AWS IAM for ConnectionsNextIIS

Last updated 1 year ago

For further reference material, .

see the linked article on self-signed certificates in Kubernetes