b. Modifying the OHS container

This document shows how to modify the OHS configuration after the OHS container is deployed.

Modifying the deployed OHS container configuration can be achieved in the following ways:

a. Editing the configuration files in $MYOHSFILES/ohsConfig.

b. Running kubectl edit configmap.

Editing the configuration files in the $MYOHSFILES/ohsConfig

To edit the configuration files:

  1. Edit the required files in the $MYOHSFILES/ohsConfig directories.

  2. Delete the configmaps for any files you have changed. For example if you have changed httpd.conf and files in moduleconf, run:

    $ kubectl delete cm ohs-httpd -n ohsns
$ kubectl delete cm ohs-config -n ohsns

  3. Recreate the required configmaps:

    $ cd $MYOHSFILES
$ kubectl create cm -n ohsns ohs-httpd --from-file=ohsConfig/httpconf
$ kubectl create cm -n ohsns ohs-config --from-file=ohsConfig/moduleconf

  4. Find the name of the existing OHS pod:

    $ kubectl get pods -n <namespace>

    For example:

    $ kubectl get pods -n ohsns

    The output will look similar to the following:

    NAME                         READY   STATUS    RESTARTS   AGE
ohs-domain-d5b648bc5-vkp4s   1/1     Running   0          55s

  5. Delete the pod using the following command:

    $ kubectl delete pod <pod> -n <namespace>

    For example:

    $ kubectl delete pod ohs-domain-d5b648bc5-vkp4s -n ohsns

    The output will look similar to the following:

    pod "ohs-domain-d5b648bc5-vkp4s" deleted

  6. Run the following command to make sure the pod has restarted:

    $ kubectl get pods -n ohsns

    The output will look similar to the following:

    NAME                         READY   STATUS    RESTARTS   AGE
ohs-domain-d5b648bc5-gdvnp   1/1     Running   0          39s

Running kubectl edit configmap

  1. Run the following command to edit the OHS configuration:

    $ kubectl edit configmap <configmap> -n <namespace>

    Where <configmap> is either ohs-httpd or ohs-config to modify the httpd.conf and moduleconf files respectively.

    For example:

    $ kubectl edit configmap ohs-httpd -n ohsns

    Note: This opens an edit session for the configmap where parameters can be changed using standard vi commands.

  2. In the edit session, edit the required parameters accordingly. Save the file and exit (:wq!).

  3. Find the name of the existing OHS pod:

    $ kubectl get pods -n <namespace>

    For example:

    $ kubectl get pods -n ohsns

    The output will look similar to the following:

    NAME                         READY   STATUS    RESTARTS   AGE
ohs-domain-d5b648bc5-vkp4s   1/1     Running   0          2h33s

  4. Delete the pod using the following command:

    $ kubectl delete pod <pod> -n <namespace>

    For example:

    $ kubectl delete pod ohs-domain-d5b648bc5-vkp4s -n ohsns

    The output will look similar to the following:

    pod "ohs-domain-d5b648bc5-vkp4s" deleted

  5. Run the following command to make sure the pod has restarted:

    $ kubectl get pods -n ohsns -w

    The output will look similar to the following:

    NAME                         READY   STATUS    RESTARTS   AGE
ohs-domain-d5b648bc5-gdvnp   1/1     Running   0          39s