28.2. Gathering logs from a failed installation

If you gave an SSH key to your installation program, you can gather data about your failed installation.

Note

You use a different command to gather logs about an unsuccessful installation than to gather logs from a running cluster. If you must gather logs from a running cluster, use the oc adm must-gather command.

Conditions préalables

  • Your OpenShift Container Platform installation failed before the bootstrap process finished. The bootstrap node is running and accessible through SSH.
  • The ssh-agent process is active on your computer, and you provided the same SSH key to both the ssh-agent process and the installation program.
  • If you tried to install a cluster on infrastructure that you provisioned, you must have the fully qualified domain names of the bootstrap and control plane nodes.

Procédure

  1. Generate the commands that are required to obtain the installation logs from the bootstrap and control plane machines:

    • If you used installer-provisioned infrastructure, change to the directory that contains the installation program and run the following command: 

      $ ./openshift-install gather bootstrap --dir <installation_directory> 1
      1
      installation_directory is the directory you specified when you ran ./openshift-install create cluster. This directory contains the OpenShift Container Platform definition files that the installation program creates.

      For installer-provisioned infrastructure, the installation program stores information about the cluster, so you do not specify the hostnames or IP addresses.

    • If you used infrastructure that you provisioned yourself, change to the directory that contains the installation program and run the following command: 

      $ ./openshift-install gather bootstrap --dir <installation_directory> \ 1
    --bootstrap <bootstrap_address> \ 2
    --master <master_1_address> \ 3
    --master <master_2_address> \ 4
    --master <master_3_address>" 5
      1
      For installation_directory, specify the same directory you specified when you ran ./openshift-install create cluster. This directory contains the OpenShift Container Platform definition files that the installation program creates.
      2
      <bootstrap_address> is the fully qualified domain name or IP address of the cluster’s bootstrap machine.
      3 4 5
      For each control plane, or master, machine in your cluster, replace <master_*_address> with its fully qualified domain name or IP address.
      Note

      A default cluster contains three control plane machines. List all of your control plane machines as shown, no matter how many your cluster uses.

    Exemple de sortie

    INFO Pulling debug logs from the bootstrap machine
INFO Bootstrap gather logs captured here "<installation_directory>/log-bundle-<timestamp>.tar.gz"

    If you open a Red Hat support case about your installation failure, include the compressed logs in the case.