Red Hat Summit Red Hat SummitSupportKonsoleEntwicklerDemo startenKontakt

Dieser Inhalt ist in der von Ihnen ausgewählten Sprache nicht verfügbar.

15.6. Booting the Manager Virtual Machine in Rescue Mode

This topic describes how to boot the Manager virtual machine into rescue mode when it does not start. For more information, see Booting to Rescue Mode in the Red Hat Enterprise Linux System Administrator’s Guide.

  1. Connect to one of the hosted-engine nodes: 

    $ ssh root@host_address
    Copy to Clipboard Toggle word wrap

  2. Put the self-hosted engine in global maintenance mode: 

    # hosted-engine --set-maintenance --mode=global
    Copy to Clipboard Toggle word wrap

  3. Check if there is already a running instance of the Manager virtual machine: 

    # hosted-engine --vm-status
    Copy to Clipboard Toggle word wrap

    If a Manager virtual machine instance is running, connect to its host: 

    # ssh root@host_address
    Copy to Clipboard Toggle word wrap

  4. Shut down the virtual machine: 

    # hosted-engine --vm-shutdown
    Copy to Clipboard Toggle word wrap
    Note

    If the virtual machine does not shut down, execute the following command: 

    # hosted-engine --vm-poweroff
    Copy to Clipboard Toggle word wrap

  5. Start the Manager virtual machine in pause mode: 

    hosted-engine --vm-start-paused
    Copy to Clipboard Toggle word wrap

  6. Set a temporary VNC password: 

    hosted-engine --add-console-password
    Copy to Clipboard Toggle word wrap

    The command outputs the necessary information you need to log in to the Manger virtual machine with VNC.

  7. Log in to the Manager virtual machine with VNC. The Manager virtual machine is still paused, so it appears to be frozen.

  8. Resume the Manager virtual machine with the following command on its host:

    Warning

    After running the following command, the boot loader menu appears. You need to enter into rescue mode before the boot loader proceeds with the normal boot process. Read the next step about entering into rescue mode before proceeding with this command. 

    # /usr/bin/virsh -c qemu:///system?authfile=/etc/ovirt-hosted-engine/virsh_auth.conf resume HostedEngine
    Copy to Clipboard Toggle word wrap
  9. Boot the Manager virtual machine in rescue mode.

  10. Disable global maintenance mode 

    # hosted-engine --set-maintenance --mode=none
    Copy to Clipboard Toggle word wrap

You can now run rescue tasks on the Manager virtual machine.

Nach oben
Red Hat logoGithubredditYoutubeTwitter

Lernen

Testen, kaufen und verkaufen

Communitys

Über Red Hat Dokumentation

Wir helfen Red Hat Benutzern, mit unseren Produkten und Diensten innovativ zu sein und ihre Ziele zu erreichen – mit Inhalten, denen sie vertrauen können. Entdecken Sie unsere neuesten Updates.

Mehr Inklusion in Open Source

Red Hat hat sich verpflichtet, problematische Sprache in unserem Code, unserer Dokumentation und unseren Web-Eigenschaften zu ersetzen. Weitere Einzelheiten finden Sie in Red Hat Blog.

Über Red Hat

Wir liefern gehärtete Lösungen, die es Unternehmen leichter machen, plattform- und umgebungsübergreifend zu arbeiten, vom zentralen Rechenzentrum bis zum Netzwerkrand.

Theme

© 2025 Red Hat