Prerequisite Configurations

16.1 Prerequisite Configurations

In order to use HPA, Oracle Access Management (OAM) must have been created with the required resources parameter. For OAM domains created with WLST scripts, this is as per Setting the OAM Server Memory Parameters. For OAM domains created with WDT models, the values should be set by default. For example:

For example:

serverPod:
  env:
  - name: USER_MEM_ARGS
    value: "-XX:+UseContainerSupport -Djava.security.egd=file:/dev/./urandom -Xms8192m -Xmx8192m"
  resources:
    limits:
      cpu: "2"
      memory: "8Gi"
    requests:
      cpu: "1000m"
      memory: "4Gi"

If you created the OAM domain without setting these parameters, then you can update the domain using the following steps:

Run the following command to edit the cluster:
```
kubectl edit cluster <cluster> -n <namespace>
```
```
kubectl edit cluster accessdomain-oam-cluster -n oamns
```
Note:
This opens an edit session for the cluster where parameters can be changed using standard vi commands.

In the edit session, search for spec:, and then look for the replicas parameter under clusterName: oam_cluster. Change the entry so it looks as follows:

spec:
  clusterName: oam_cluster
  replicas: 1
  serverPod:
    env:
    - name: USER_MEM_ARGS
      value: -XX:+UseContainerSupport -Djava.security.egd=file:/dev/./urandom -Xms8192m -Xmx8192m
    resources:
      limits:
        cpu: "2"
        memory: 8Gi
      requests:
        cpu: 1000m
        memory: 4Gi
  serverService:
    precreateService: true
    ...

Save the file and exit (:wq!).
The output will look similar to the following:
```
cluster.weblogic.oracle/accessdomain-oam-cluster edited
```
The OAM managed server pods will then automatically be restarted.