红帽全球峰会26.4. Debug boot options
You can use the following options when debugging issues to troubleshoot and fix issues.
- inst.rescue
-
Use the
inst.rescueoption to run the rescue environment for diagnosing and fixing systems. For more information, see the Red Hat Knowledgebase solution repair a filesystem in rescue mode. - inst.updates=
Use the
inst.updates=option to specify the location of theupdates.imgfile that you want to apply during installation. Theupdates.imgfile can be derived from one of several sources.Expand 表 26.4. updates.img file sources Source Description Example Updates from a network
Specify the network location of
updates.img. This does not require any modification to the installation tree. To use this method, edit the kernel command line to includeinst.updates.inst.updates=http://website.com/path/to/updates.img.Updates from a disk image
Save an
updates.imgon a USB key.inst.updates=sda1:/images/updates.imgfor an updates image located in theimagesdirectory on thesda1device orinst.updates=UUID=b4234403-dafb-44c1-b878-4d57b40c9843:/updates.imgfor an update image located in the root directory of a partition identified by its UUID.Updates from an installation tree
If you are using a CD, disk, HTTP, HTTPS, or FTP installation, save the
updates.imgin the installation tree so that all installations can detect the.imgfile. The file name must beupdates.img.For NFS installs, save the file in the
images/directory, or in theRHupdates/directory.- inst.syslog=
-
Sends log messages to the
syslogprocess on the specified host when the installation starts. You can useinst.syslog=<host>[:port]only if the remotesyslogprocess is configured to accept incoming connections. - inst.virtiolog=
-
Use the
inst.virtiolog=<name>option to specify which virtio port (a character device at/dev/virtio-ports/<name>) to use for forwarding logs. The default value isorg.fedoraproject.anaconda.log.0. - rd.live.ram
-
Copies the stage 2 image in
images/install.imginto RAM. Note that this increases the memory required for installation by the size of the image, which may result in an additional requirement of approximately 1 GiB of RAM or more. - inst.nokill
- Prevent the installation program from rebooting when a fatal error occurs, or at the end of the installation process. Use it capture installation logs which would be otherwise lost upon reboot.
- inst.noshell
- Prevent a shell on terminal session 2 (tty2) including tmux window 2, during installation.
- inst.notmux
- Prevent the use of tmux during installation. The output is generated without terminal control characters and is meant for non-interactive uses.
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