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Chapter 9. Configuring the audit log policy
You can control the amount of information that is logged to the API server audit logs by choosing the audit log policy profile to use.
9.1. About audit log policy profiles
Audit log profiles define how to log requests that come to the OpenShift API server, the Kubernetes API server, and the OAuth API server.
OpenShift Container Platform provides the following predefined audit policy profiles:
Profile | Description |
---|---|
| Logs only metadata for read and write requests; does not log request bodies except for OAuth access token requests. This is the default policy. |
|
In addition to logging metadata for all requests, logs request bodies for every write request to the API servers ( |
|
In addition to logging metadata for all requests, logs request bodies for every read and write request to the API servers ( |
| No requests are logged; even OAuth access token requests and OAuth authorize token requests are not logged. Custom rules are ignored when this profile is set. Warning
It is not recommended to disable audit logging by using the |
-
Sensitive resources, such as
Secret
,Route
, andOAuthClient
objects, are never logged past the metadata level.
By default, OpenShift Container Platform uses the Default
audit log profile. You can use another audit policy profile that also logs request bodies, but be aware of the increased resource usage (CPU, memory, and I/O).
9.2. Configuring the audit log policy
You can configure the audit log policy to use when logging requests that come to the API servers.
Prerequisites
-
You have access to the cluster as a user with the
cluster-admin
role.
Procedure
Edit the
APIServer
resource:$ oc edit apiserver cluster
Update the
spec.audit.profile
field:apiVersion: config.openshift.io/v1 kind: APIServer metadata: ... spec: audit: profile: WriteRequestBodies 1
- 1
- Set to
Default
,WriteRequestBodies
,AllRequestBodies
, orNone
. The default profile isDefault
.
WarningIt is not recommended to disable audit logging by using the
None
profile unless you are fully aware of the risks of not logging data that can be beneficial when troubleshooting issues. If you disable audit logging and a support situation arises, you might need to enable audit logging and reproduce the issue in order to troubleshoot properly.- Save the file to apply the changes.
Verification
Verify that a new revision of the Kubernetes API server pods is rolled out. It can take several minutes for all nodes to update to the new revision.
$ oc get kubeapiserver -o=jsonpath='{range .items[0].status.conditions[?(@.type=="NodeInstallerProgressing")]}{.reason}{"\n"}{.message}{"\n"}'
Review the
NodeInstallerProgressing
status condition for the Kubernetes API server to verify that all nodes are at the latest revision. The output showsAllNodesAtLatestRevision
upon successful update:AllNodesAtLatestRevision 3 nodes are at revision 12 1
- 1
- In this example, the latest revision number is
12
.
If the output shows a message similar to one of the following messages, the update is still in progress. Wait a few minutes and try again.
-
3 nodes are at revision 11; 0 nodes have achieved new revision 12
-
2 nodes are at revision 11; 1 nodes are at revision 12
9.3. Configuring the audit log policy with custom rules
You can configure an audit log policy that defines custom rules. You can specify multiple groups and define which profile to use for that group.
These custom rules take precedence over the top-level profile field. The custom rules are evaluated from top to bottom, and the first that matches is applied.
Custom rules are ignored if the top-level profile field is set to None
.
Prerequisites
-
You have access to the cluster as a user with the
cluster-admin
role.
Procedure
Edit the
APIServer
resource:$ oc edit apiserver cluster
Add the
spec.audit.customRules
field:apiVersion: config.openshift.io/v1 kind: APIServer metadata: ... spec: audit: customRules: 1 - group: system:authenticated:oauth profile: WriteRequestBodies - group: system:authenticated profile: AllRequestBodies profile: Default 2
- 1
- Add one or more groups and specify the profile to use for that group. These custom rules take precedence over the top-level profile field. The custom rules are evaluated from top to bottom, and the first that matches is applied.
- 2
- Set to
Default
,WriteRequestBodies
, orAllRequestBodies
. If you do not set this top-level profile field, it defaults to theDefault
profile.
WarningDo not set the top-level profile field to
None
if you want to use custom rules. Custom rules are ignored if the top-level profile field is set toNone
.- Save the file to apply the changes.
Verification
Verify that a new revision of the Kubernetes API server pods is rolled out. It can take several minutes for all nodes to update to the new revision.
$ oc get kubeapiserver -o=jsonpath='{range .items[0].status.conditions[?(@.type=="NodeInstallerProgressing")]}{.reason}{"\n"}{.message}{"\n"}'
Review the
NodeInstallerProgressing
status condition for the Kubernetes API server to verify that all nodes are at the latest revision. The output showsAllNodesAtLatestRevision
upon successful update:AllNodesAtLatestRevision 3 nodes are at revision 12 1
- 1
- In this example, the latest revision number is
12
.
If the output shows a message similar to one of the following messages, the update is still in progress. Wait a few minutes and try again.
-
3 nodes are at revision 11; 0 nodes have achieved new revision 12
-
2 nodes are at revision 11; 1 nodes are at revision 12
9.4. Disabling audit logging
You can disable audit logging for OpenShift Container Platform. When you disable audit logging, even OAuth access token requests and OAuth authorize token requests are not logged.
It is not recommended to disable audit logging by using the None
profile unless you are fully aware of the risks of not logging data that can be beneficial when troubleshooting issues. If you disable audit logging and a support situation arises, you might need to enable audit logging and reproduce the issue in order to troubleshoot properly.
Prerequisites
-
You have access to the cluster as a user with the
cluster-admin
role.
Procedure
Edit the
APIServer
resource:$ oc edit apiserver cluster
Set the
spec.audit.profile
field toNone
:apiVersion: config.openshift.io/v1 kind: APIServer metadata: ... spec: audit: profile: None
NoteYou can also disable audit logging only for specific groups by specifying custom rules in the
spec.audit.customRules
field.- Save the file to apply the changes.
Verification
Verify that a new revision of the Kubernetes API server pods is rolled out. It can take several minutes for all nodes to update to the new revision.
$ oc get kubeapiserver -o=jsonpath='{range .items[0].status.conditions[?(@.type=="NodeInstallerProgressing")]}{.reason}{"\n"}{.message}{"\n"}'
Review the
NodeInstallerProgressing
status condition for the Kubernetes API server to verify that all nodes are at the latest revision. The output showsAllNodesAtLatestRevision
upon successful update:AllNodesAtLatestRevision 3 nodes are at revision 12 1
- 1
- In this example, the latest revision number is
12
.
If the output shows a message similar to one of the following messages, the update is still in progress. Wait a few minutes and try again.
-
3 nodes are at revision 11; 0 nodes have achieved new revision 12
-
2 nodes are at revision 11; 1 nodes are at revision 12