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redhat-upgrade-tool(8) [centos man page]

REDHAT-UPGRADE-TOOL(8)					  redhat-upgrade-tool User Manual				    REDHAT-UPGRADE-TOOL(8)

NAME

       redhat-upgrade-tool - Red Hat Upgrade tool

SYNOPSIS

       redhat-upgrade-tool [OPTIONS] SOURCE

DESCRIPTION

       redhat-upgrade-tool is the Red Hat Upgrade tool.

       The redhat-upgrade-tool client runs on the system to be upgraded. It determines what packages are needed for upgrade and gathers them from
       the source(s) given. It also fetches and sets up the boot images needed to run the upgrade and sets up the system to perform the upgrade at
       next boot.

       The actual upgrade takes place when the system is rebooted, using the boot images set up by redhat-upgrade-tool. The upgrade initrd starts
       the existing system (mostly) as normal, lets it mount all the local filesystems, then starts the upgrade.

       When the upgrade finishes, it reboots the system into the newly-upgraded OS.

OPTIONS

   Optional arguments
       -h, --help
	   Show a help message and exit.

       -v, --verbose
	   Print more info.

       -d, --debug
	   Print lots of debugging info.

       --debuglog DEBUGLOG
	   Write debugging output to the given file. Defaults to /var/log/redhat-upgrade-tool.log.

       --reboot
	   Automatically reboot to start the upgrade when ready.

   SOURCE
       These options tell redhat-upgrade-tool where to look for the packages and boot images needed to run the upgrade. At least one of these
       options is required.

       --device [DEV]
	   Device or mountpoint of mounted install media. If DEV is omitted, redhat-upgrade-tool will scan all currently-mounted removable devices
	   (USB disks, optical media, etc.)

       --iso ISO
	   Installation image file.

       --network VERSION
	   Online repos matching VERSION (a number or "rawhide")

       Multiple sources may be used, if desired.

   Additional options for --network
       --enablerepo REPOID
	   Enable one or more repos (wildcards allowed).

       --disablerepo REPOID
	   Disable one or more repos (wildcards allowed).

       --addrepo REPOID=[@]URL
	   Add the repo at URL. Prefix URL with @ to indicate that the URL is a mirrorlist.

       --instrepo REPOID
	   Get upgrader boot images from the repo named REPOID. The repo must contain a valid .treeinfo file which points to the location of
	   usable kernel and upgrade images.

   Cleanup commands
       --resetbootloader
	   Remove any modifications made to bootloader configuration.

       --clean
	   Clean up everything written by redhat-upgrade-tool.

EXAMPLES

       redhat-upgrade-tool --network 7.0 --instrepo <repo URL>

       Upgrade to RHEL 7.0 by downloading all needed packages and data from the specified repository.

       redhat-upgrade-tool --device --network 7.0

       Upgrade to RHEL 7.0 using install media mounted somewhere on the system, fetching updates from the network if needed.

EXIT STATUS

       0
	   Success.

       1
	   Cancelled by user, failure writing files to disk, or other unknown error

       2
	   Failed to download/copy files from the given SOURCE

       3
	   RPM upgrade transaction test failed

BUGS

       The --iso image must be on a filesystem listed in /etc/fstab.

AUTHORS

       Will Woods <wwoods@redhat.com>

redhat-upgrade-tool						    11/08/2013						    REDHAT-UPGRADE-TOOL(8)

Check Out this Related Man Page

DH_SYSTEMD_START(1)						     Debhelper						       DH_SYSTEMD_START(1)

NAME

       dh_systemd_start - start/stop/restart systemd unit files

SYNOPSIS

       dh_systemd_start [debhelperoptions] [--restart-after-upgrade] [--no-stop-on-upgrade] [unitfile...]

DESCRIPTION

       dh_systemd_start is a debhelper program that is responsible for starting/stopping or restarting systemd unit files in case no corresponding
       sysv init script is available.

       As with dh_installinit, the unit file is stopped before upgrades and started afterwards (unless --restart-after-upgrade is specified, in
       which case it will only be restarted after the upgrade).  This logic is not used when there is a corresponding SysV init script because
       invoke-rc.d performs the stop/start/restart in that case.

OPTIONS

       --restart-after-upgrade
	   Do not stop the unit file until after the package upgrade has been completed.  This is the default behaviour in compat 10.

	   In earlier compat levels the default was to stop the unit file in the prerm, and start it again in the postinst.

	   This can be useful for daemons that should not have a possibly long downtime during upgrade. But you should make sure that the daemon
	   will not get confused by the package being upgraded while it's running before using this option.

       --no-restart-after-upgrade
	   Undo a previous --restart-after-upgrade (or the default of compat 10).  If no other options are given, this will cause the service to
	   be stopped in the prerm script and started again in the postinst script.

       -r, --no-stop-on-upgrade, --no-restart-on-upgrade
	   Do not stop service on upgrade.

       --no-start
	   Do not start the unit file after upgrades and after initial installation (the latter is only relevant for services without a
	   corresponding init script).

NOTES

       Note that this command is not idempotent. dh_prep(1) should be called between invocations of this command (with the same arguments).
       Otherwise, it may cause multiple instances of the same text to be added to maintainer scripts.

       Note that dh_systemd_start should be run after dh_installinit so that it can detect corresponding SysV init scripts. The default sequence
       in dh does the right thing, this note is only relevant when you are calling dh_systemd_start manually.

SEE ALSO

       debhelper(7)

AUTHORS

       pkg-systemd-maintainers@lists.alioth.debian.org

11.1.6ubuntu2							    2018-05-10						       DH_SYSTEMD_START(1)
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