Disabling ownership via cluster version overrides prevents upgrades. Please remove overrides before continuing.
Only the configuration options described in this documentation are supported for logging.
Do not use any other configuration options, as they are unsupported. Configuration paradigms might change across OKD releases, and such cases can only be handled gracefully if all configuration possibilities are controlled. If you use configurations other than those described in this documentation, your changes will be overwritten, because Operators are designed to reconcile any differences.
If you must perform configurations not described in the OKD documentation, you must set your Red Hat OpenShift Logging Operator to |
Logging is provided as an installable component, with a distinct release cycle from the core OKD. The Red Hat OpenShift Container Platform Life Cycle Policy outlines release compatibility. |
Logging for Red Hat OpenShift is an opinionated collector and normalizer of application, infrastructure, and audit logs. It is intended to be used for forwarding logs to various supported systems.
Logging is not:
A high scale log collection system
Security Information and Event Monitoring (SIEM) compliant
Historical or long term log retention or storage
A guaranteed log sink
Secure storage - audit logs are not stored by default
LokiStack development is ongoing. Not all APIs are currently supported.
CustomResourceDefinition (CRD) | ApiVersion | Support state |
---|---|---|
LokiStack |
lokistack.loki.grafana.com/v1 |
Supported in 5.5 |
RulerConfig |
rulerconfig.loki.grafana/v1 |
Supported in 5.7 |
AlertingRule |
alertingrule.loki.grafana/v1 |
Supported in 5.7 |
RecordingRule |
recordingrule.loki.grafana/v1 |
Supported in 5.7 |
You must set the Red Hat OpenShift Logging Operator to the Unmanaged
state to modify the following components:
The Elasticsearch
custom resource (CR)
The Kibana deployment
The fluent.conf
file
The Fluentd daemon set
You must set the OpenShift Elasticsearch Operator to the Unmanaged
state to modify the Elasticsearch deployment files.
Explicitly unsupported cases include:
Configuring default log rotation. You cannot modify the default log rotation configuration.
Configuring the collected log location. You cannot change the location of the log collector output file, which by default is /var/log/fluentd/fluentd.log
.
Throttling log collection. You cannot throttle down the rate at which the logs are read in by the log collector.
Configuring the logging collector using environment variables. You cannot use environment variables to modify the log collector.
Configuring how the log collector normalizes logs. You cannot modify default log normalization.
The management state of an Operator determines whether an Operator is actively managing the resources for its related component in the cluster as designed. If an Operator is set to an unmanaged state, it does not respond to changes in configuration nor does it receive updates.
While this can be helpful in non-production clusters or during debugging, Operators in an unmanaged state are unsupported and the cluster administrator assumes full control of the individual component configurations and upgrades.
An Operator can be set to an unmanaged state using the following methods:
Individual Operator configuration
Individual Operators have a managementState
parameter in their configuration.
This can be accessed in different ways, depending on the Operator. For example,
the Red Hat OpenShift Logging Operator accomplishes this by modifying a custom resource
(CR) that it manages, while the Cluster Samples Operator uses a cluster-wide
configuration resource.
Changing the managementState
parameter to Unmanaged
means that the Operator
is not actively managing its resources and will take no action related to the
related component. Some Operators might not support this management state as it
might damage the cluster and require manual recovery.
Changing individual Operators to the |
Cluster Version Operator (CVO) overrides
The spec.overrides
parameter can be added to the CVO’s configuration to allow
administrators to provide a list of overrides to the CVO’s behavior for a
component. Setting the spec.overrides[].unmanaged
parameter to true
for a
component blocks cluster upgrades and alerts the administrator after a CVO
override has been set:
Disabling ownership via cluster version overrides prevents upgrades. Please remove overrides before continuing.
Setting a CVO override puts the entire cluster in an unsupported state. Reported issues must be reproduced after removing any overrides for support to proceed. |
When opening a support case, it is helpful to provide debugging information about your cluster to Red Hat Support.
You can use the must-gather
tool to collect diagnostic information for project-level resources, cluster-level resources, and each of the logging components.
For prompt support, supply diagnostic information for both OKD and logging.
Do not use the |
The oc adm must-gather
CLI command collects the information from your cluster that is most likely needed for debugging issues.
For your logging, must-gather
collects the following information:
Project-level resources, including pods, configuration maps, service accounts, roles, role bindings, and events at the project level
Cluster-level resources, including nodes, roles, and role bindings at the cluster level
OpenShift Logging resources in the openshift-logging
and openshift-operators-redhat
namespaces, including health status for the log collector, the log store, and the log visualizer
When you run oc adm must-gather
, a new pod is created on the cluster. The data is collected on that pod and saved in a new directory that starts with must-gather.local
. This directory is created in the current working directory.
You can use the oc adm must-gather
CLI command to collect information about logging.
To collect logging information with must-gather
:
Navigate to the directory where you want to store the must-gather
information.
Run the oc adm must-gather
command against the logging image:
$ oc adm must-gather --image=quay.io/openshift/origin-cluster-logging-operator
The must-gather
tool creates a new directory that starts with must-gather.local
within the current directory. For example:
must-gather.local.4157245944708210408
.
Create a compressed file from the must-gather
directory that was just created. For example, on a computer that uses a Linux operating system, run the following command:
$ tar -cvaf must-gather.tar.gz must-gather.local.4157245944708210408
Attach the compressed file to your support case on the Red Hat Customer Portal.