12.6. Security context constraints reference commands
You can manage SCCs in your instance as normal API objects using the CLI.
You must have cluster-admin privileges to manage SCCs.
Do not modify the default SCCs. Customizing the default SCCs can lead to issues when upgrading. Instead, create new SCCs.
12.6.1. Listing SCCs
To get a current list of SCCs:
$ oc get scc
Example output
NAME PRIV CAPS SELINUX RUNASUSER FSGROUP SUPGROUP PRIORITY READONLYROOTFS VOLUMES anyuid false [] MustRunAs RunAsAny RunAsAny RunAsAny 10 false [configMap downwardAPI emptyDir persistentVolumeClaim projected secret] hostaccess false [] MustRunAs MustRunAsRange MustRunAs RunAsAny <none> false [configMap downwardAPI emptyDir hostPath persistentVolumeClaim projected secret] hostmount-anyuid false [] MustRunAs RunAsAny RunAsAny RunAsAny <none> false [configMap downwardAPI emptyDir hostPath nfs persistentVolumeClaim projected secret] hostnetwork false [] MustRunAs MustRunAsRange MustRunAs MustRunAs <none> false [configMap downwardAPI emptyDir persistentVolumeClaim projected secret] node-exporter false [] RunAsAny RunAsAny RunAsAny RunAsAny <none> false [*] nonroot false [] MustRunAs MustRunAsNonRoot RunAsAny RunAsAny <none> false [configMap downwardAPI emptyDir persistentVolumeClaim projected secret] privileged true [*] RunAsAny RunAsAny RunAsAny RunAsAny <none> false [*] restricted false [] MustRunAs MustRunAsRange MustRunAs RunAsAny <none> false [configMap downwardAPI emptyDir persistentVolumeClaim projected secret]
12.6.2. Examining an SCC
You can view information about a particular SCC, including which users, service accounts, and groups the SCC is applied to.
For example, to examine the restricted SCC:
$ oc describe scc restricted
Example output
Name: restricted Priority: <none> Access: Users: <none> 1 Groups: system:authenticated 2 Settings: Allow Privileged: false Default Add Capabilities: <none> Required Drop Capabilities: KILL,MKNOD,SYS_CHROOT,SETUID,SETGID Allowed Capabilities: <none> Allowed Seccomp Profiles: <none> Allowed Volume Types: configMap,downwardAPI,emptyDir,persistentVolumeClaim,projected,secret Allow Host Network: false Allow Host Ports: false Allow Host PID: false Allow Host IPC: false Read Only Root Filesystem: false Run As User Strategy: MustRunAsRange UID: <none> UID Range Min: <none> UID Range Max: <none> SELinux Context Strategy: MustRunAs User: <none> Role: <none> Type: <none> Level: <none> FSGroup Strategy: MustRunAs Ranges: <none> Supplemental Groups Strategy: RunAsAny Ranges: <none>
To preserve customized SCCs during upgrades, do not edit settings on the default SCCs.
12.6.3. Deleting an SCC
To delete an SCC:
$ oc delete scc <scc_name>
If you delete a default SCC, it will regenerate when you restart the cluster.
12.6.4. Updating an SCC
To update an existing SCC:
$ oc edit scc <scc_name>
To preserve customized SCCs during upgrades, do not edit settings on the default SCCs.
