1. Documentation
    2. history bug_report picture_as_pdf
×

Collecting logging data for Red Hat Support

When opening a support case, it is helpful to provide debugging information about your cluster to Red Hat Support.

The must-gather tool enables you to collect diagnostic information for project-level resources, cluster-level resources, and each of the logging subsystem components.

For prompt support, supply diagnostic information for both Red Hat OpenShift Service on AWS and OpenShift Logging.

Do not use the hack/logging-dump.sh script. The script is no longer supported and does not collect data.

About the must-gather tool

The oc adm must-gather CLI command collects the information from your cluster that is most likely needed for debugging issues.

For your logging subsystem, 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.

Prerequisites

  • The logging subsystem and Elasticsearch must be installed.

Collecting OpenShift Logging data

You can use the oc adm must-gather CLI command to collect information about your logging subsystem.

Procedure

To collect logging subsystem information with must-gather:

  1. Navigate to the directory where you want to store the must-gather information.

  2. Run the oc adm must-gather command against the OpenShift Logging image:

    $ oc adm must-gather --image=$(oc -n openshift-logging get deployment.apps/cluster-logging-operator -o jsonpath='{.spec.template.spec.containers[?(@.name == "cluster-logging-operator")].image}')

    The must-gather tool creates a new directory that starts with must-gather.local within the current directory. For example: must-gather.local.4157245944708210408.

  3. 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

  4. Attach the compressed file to your support case on the Red Hat Customer Portal.