lab-8-change-configuration-file.md

Lab 8 - How to change configuration file

Here we will update the configuration file on the central configuration server.

Custom configuration of deploy-repository.yaml.template on CC pods

Steps

1. Download current template configuration file that exists on cc Deploy pod that is running. For example, if you want to update deploy-repository.yaml.template, it is in the /opt/xebialabs/central-configuration-server/central-conf/deploy-repository.yaml.template in master pod.

   Lets first define the variables to make the process easier

   export FILE_TO_UPDATE=deploy-repository.yaml.template
   export TEMPLATE_DIR=central-conf
   export TARGET_DIR=centralConfiguration

   Download the deploy-repository.yaml.template from a CC pod.

   kubectl cp -c deploy \
   ns-yourname/dai-xld-ns-yourname-digitalai-deploy-cc-server-0:$TEMPLATE_DIR/$FILE_TO_UPDATE \
   $FILE_TO_UPDATE

2. Make our changes to the file

   vi $FILE_TO_UPDATE

3. Create a patch file

   c=$(cat $FILE_TO_UPDATE) \
   contentPath=".spec.centralConfiguration.extraConfiguration.${TEMPLATE_DIR}_${FILE_TO_UPDATE//./-}.content" \
   f="${TEMPLATE_DIR}/$FILE_TO_UPDATE" \
   filePath=".spec.centralConfiguration.extraConfiguration.${TEMPLATE_DIR}_${FILE_TO_UPDATE//./-}.path" \
   yq -n 'eval(strenv(contentPath)) = strenv(c) | eval(strenv(filePath)) = strenv(f)' \
   > "$FILE_TO_UPDATE.patch.yaml"

4. Apply the patch file

   kubectl patch -n ns-yourname digitalaideploys.xld.digital.ai dai-xld-ns-yourname \
     --type=merge --patch-file $FILE_TO_UPDATE.patch.yaml

   The pods will now restart central configuration pod, after which we should be able to see our changes in the container.

5. Restart master and worker Deploy pods, by deleting statefulsets

   kubectl delete sts dai-xld-ns-yourname-digitalai-deploy-master
   kubectl delete sts dai-xld-ns-yourname-digitalai-deploy-worker

   The pods will now restart with the new configuration.

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That's all Folks!