Changing the CPU and memory resources on the rook-ceph pods

When you install Fusion Data Foundation, it comes with pre-defined CPU and memory resources for the rook-ceph pods. You can manually increase these values according to the requirements.

About this task

You can change the CPU and memory resources on the following pods:

The following example illustrates how to change the CPU and memory resources on the rook-ceph pods. In this example, the existing MDS pod values of cpu and memory are increased from 1 and 4Gi to 2 and 8Gi respectively.

Procedure

Edit the storage cluster.
Use the following command, where <storagecluster_name> specifies the name of the storage cluster.
```
oc edit storagecluster -n openshift-storage <storagecluster_name>
```
For example:
```
oc edit storagecluster -n openshift-storage ocs-storagecluster
```

Add the following lines to the storage cluster Custom Resource (CR):

spec:
  resources:
    mds:
      limits:
        cpu: 2memory: 8Gi
      requests:
        cpu: 2memory: 8Gi

Save the changes and exit the editor.

Alternatively, run the oc patch command to change the CPU and memory value of the mds pod.

Use the following command, where <storagecluster_name> specifies the name of the storage cluster.

oc patch -n openshift-storage storagecluster <storagecluster_name> --type merge \ --patch '{"spec": {"resources": {"mds": {"limits": {"cpu": "2","memory": "8Gi"},"requests": {"cpu": "2","memory": "8Gi"}}}}}'

For example:

oc patch -n openshift-storage storagecluster ocs-storagecluster \
    --type merge \
    --patch '{"spec": {"resources": {"mds": {"limits": {"cpu": "2","memory": "8Gi"},"requests": {"cpu": "2","memory": "8Gi"}}}}}'