Ok all... This is my 3rd piece. It's "my script" that runs with "my setup" to start up containers at boot with systemd on Fedora.
I don't want to step on the valuable work that Stéphane is doing in this area but I hope this provides him with ideas. Installed in /usr/libexec/lxc/lxc-startup, it provides the additional functionality to start containers when Fedora restarts. Out of respect for other people's work right now, I'm not offering this as a patch to the source tree. It's just a suggestion how I would do this. There are a lot of things in this script that is very maliable and it depends on a couple of things that need to be refined (such as LXC_PATH). In this script, a formalized way of obtaining a list of containers (and configuration files) qualified to be autobooted would be good. I currently use the output of lxc-ls in combination of an arbitrary LCM_PATH of /var/lib/lxc, neither of which may be optimal Offered with the proviso that "it works for me"... Attached below the jump. Regards, Mike -- Michael H. Warfield (AI4NB) | (770) 978-7061 | m...@wittsend.com /\/\|=mhw=|\/\/ | (678) 463-0932 | http://www.wittsend.com/mhw/ NIC whois: MHW9 | An optimist believes we live in the best of all PGP Key: 0x674627FF | possible worlds. A pessimist is sure of it! -- #!/bin/sh - # lxc-startup # Start up a list of containers... # lxc-run [-b] [-f] [-h] [vm list] # Wrapper script to run a bunch of containers optionally at boot time # # -l n : Boot all stopped containers with bootlevel >= n # : default 0 # -b : Only start the container if onboot is true # : equivalent to "-l 1" (also sets -q) # -F : Force boot a container even if disabled is true # : equivalent to "-l -1" # -h : Print this message and exit # -q : Quiet (disable ECHO) # -v : Enable debug prints (enable ECHO) # -n : Optional individual VM (maybe be used multiple times) # [vm list] - list of VM's to start. Default is any that are not disabled. # # Authors: # Michael H. Warfield <m...@wittsend.com> # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA declare -i VERBOSITY=1 START_LEVEL=0 LASTCONFIG=undefined # Not sure what the deal is but it seems to be a problem if we # start kicking off containers too soon and this is non-blocking # anyways, so let's just give the system a little time to catch # it's breath before kicking these babies off... # This is a variable to start next delay and is fed from the configuration # files... # # This sets the initial delay... DELAY=5 DELAY_DEFAULT=2 # A few generic ECHO commands for verbosity... # Most of these are not currently used... ECHO_OFF=": echo" ECHO=": echo" ECHO1=": echo" ECHO2=": echo" ECHO3=": echo" ECHO4=": echo" # BOOTLIST will be a newline delimited prioritized list of our # containers to be processed. # # Currently, this list is space delimited. This is not good if # we allow white space in container names or paths. A '/' may # be better as a delimiter just because it screws up pathnames # and nobody in their right mind would use it in a name. # # Fields: # Priority # Post Start Delay # Container Name # Container Config file BOOTLIST= function usage() { echo "usage: $0 [-b] [-F] [-h] [-q] [-v] [-l n] [-n VM] [--] [VM list]" } function help() { usage echo " Run one or more containers with a halt monitor Register a new container if necessary Options: -b : Only start the container if lxc.onboot is true -F : Force boot a container even if lxc.disabled is true -l n : Boot containers with bootlevel >= n -h : Print this message and exit -q : Quiet (disable ECHO) -v : Enable debug prints (enable ECHO) -n : Optional individual VM (maybe be used multiple times) VM list : Optional list of VM's to start If the list of VM names is empty, it defaults to all available subject to boot and force options. " } # Rotate log based on date # argvs == logfile to rotate... function log_rotate() { local STAMP=$(date +%F-%T) while [[ ${1} != "" ]] do local FNAME=$1 if [[ ${FNAME} != "" && -f ${FNAME} && ! -f ${FNAME}-${STAMP} ]] then mv ${FNAME} ${FNAME}-${STAMP} fi shift done } # Checks the boot order priority in a config file and # returns it plus the post start delay befoer starting # the next container... # This is my own convention... These are options in the config # file under lxc-boot.* to control higher level boot options. # For "legacy" reasons (my past efforts) this honors lxc-boot.disabled # and lxc-boot.onboot, even though most of the functionality is # subsumed under lxc-boot.autoboot. All of these parameters are, # of course, maliable and adaptable to what ever we want. CCG_GROUP=lxc-boot # Function is called with the realpath to the configuration file. # Function returns echoing the value of "priority delay" where # pritority is the positive value boot order priority of the # container and the delay to wait before starting another container. function check_boot_level() { local CNAME local AUTOBOOT local DISABLED local ONBOOT local MY_DELAY local ret CNAME=$1 ret=$2 DISABLED=`sed -e "/$CFG_GROUP\.disabled\s*=\s*/!d" -e 's/.*=\s*//' -e q ${CNAME}` ONBOOT=`sed -e "/$CFG_GROUP\.onboot\s*=\s*/!d" -e 's/.*=\s*//' -e q ${CNAME}` AUTOBOOT=`sed -e "/$CFG_GROUP\.autoboot\s*=\s*/!d" -e 's/.*=\s*//' -e q ${CNAME}` MY_DELAY=`sed -e "/$CFG_GROUP\.delay\s*=\s*/!d" -e 's/.*=\s*//' -e q ${CNAME}` # If disabled is true, then override everything... # More severe disables can be applied more negative numbers. if [[ "${DISABLED}" == true || "${DISABLED}" == yes ]] then AUTOBOOT=-1; fi # If onboot is set and autoboot is not set, set autoboot to 1 if [[ "${ONBOOT}" == true || "${ONBOOT}" == yes ]] then if [[ ${AUTOBOOT} == "" ]] then AUTOBOOT=1; fi fi if [[ "${AUTOBOOT}" != "" ]] then ret=${AUTOBOOT} fi if [[ "${MY_DELAY}" == "" ]] then MY_DELAY=${DELAY_DEFAULT} fi echo "${ret} ${MY_DELAY}" return 0 } # # Need to process our command line options # # We'll take a couple of shortcuts first. # If there are no other parameters other than "start", "stop", or "restart", # then we'll take that... That makes this compatible with System V init # and Upstart. if [[ ${1} == "start" ]] then shift # This is an exect out of init. Make ssshhh... VERBOSITY=0 START_LEVEL=1 fi if [[ ${1} == "stop" ]] then echo "Stop is not currently implimented" VERBOSITY=0 exit 0 fi if [[ ${1} == "restart" ]] then echo "Restart is not currently implimented" VERBOSITY=0 exit 0 fi shortoptions='vqhl:n:Fb' longoptions='verbose,quiet,help,level:,name:,force,boot' getopt=$(getopt -o $shortoptions --longoptions $longoptions -- "$@") if [[ $? != 0 ]] then usage exit 1; fi eval set -- "$getopt" while true; do case "$1" in -h|--help) help exit 1 ;; -n|--name) shift VM_LIST="$VM_LIST $1" shift ;; -F|--force) shift START_LEVEL=-1 ;; -v|--verbose) shift VERBOSITY=$(( $VERBOSITY + 1 )) ECHO="echo" ;; -q|--quiet) shift VERBOSITY=0 ECHO=": echo" ;; -b|--boot) VERBOSITY=0 shift START_LEVEL=1 ;; -l|--level) shift START_LEVEL=$1 shift ;; --) shift break ;; -*) echo $1 usage exit 1 ;; *) break ;; esac done if [[ ${VERBOSITY} -gt 0 ]] then ECHO="echo" else ECHO=": echo" fi # What ever is left should be a list of VM's or NULL if [[ "$*" ]] then VM_LIST="$VM_LIST $*" for CNAME in $VM_LIST do if [[ -f /var/lib/lxc/${CNAME}/config ]] then STATUS=$(lxc-info -n ${CNAME} 2> /dev/null | sed -e '/[Ss]tate:/!d' -e 's/[Ss]tate:.*\s//') FNAME=$(realpath /var/lib/lxc/${CNAME}/config) BOOT=$(check_boot_level "${FNAME}" 0) ${ECHO_OFF} "${BOOT} ${CNAME} ${FNAME}" BOOTLIST="${BOOTLIST} ${BOOT} ${CNAME} ${FNAME}" fi done fi if [[ ! "$VM_LIST" ]] then # Ubuntu convention... # These should be links to conf files # name format "container_name{.conf} if [[ -d /etc/lxc/auto ]] then for f in $( ls /etc/lxc/auto ) do if [[ -s /etc/lxc/auto/$f ]] then FNAME=$( realpath -e "/etc/lxc/auto/$f" ) CNAME="$(basename $f .conf)" # Ok... Just for giggles, let's do a # little comparison... The config file # SHOULD be in a directory which matches # the container name or maymhem may follow. DIRNAME=$(dirname ${FNAME}) CDIR=$(basename ${DIRNAME}) STATUS=$(lxc-info -n ${CNAME} 2> /dev/null | sed -e '/[Ss]tate:/!d' -e 's/[Ss]tate:.*\s//') if [[ "${CNAME}" != "${CDIR}" ]] then ${ECHO} "Warning! Container directory does not match autoboot name - ${CNAME} != ${CDIR}" NSTATUS=$(lxc-info -n ${CDIR} 2> /dev/null | sed -e '/[Ss]tate:/!d' -e 's/[Ss]tate:.*\s//') if [[ ${STATUS} == "" && ${NSTATUS} != "" ]] then ${ECHO} "Switching to $CDIR for container name" # This is a bit of a heuristic but, if it fails, # some chump is doing something stupid that they # need to manually correct. CNAME=$CDIR STATUS=${NSTATUS} fi fi if [[ ${STATUS} == "STOPPED" ]] then BOOT=$(check_boot_level "${FNAME}" 1) ${ECHO} "${BOOT} ${CNAME} ${FNAME}" BOOTLIST="${BOOTLIST} ${BOOT} ${CNAME} ${FNAME}" else ${ECHO} "Container ${CNAME} is ${STATUS} and not in state STOPPED, skipping" fi else ${ECHO} "/etc/lxc/auto/$f not a symlink" fi done fi VM_LIST=$(lxc-ls) for CNAME in $VM_LIST do if [[ -f /var/lib/lxc/${CNAME}/config ]] then STATUS=$(lxc-info -n ${CNAME} 2> /dev/null | sed -e '/[Ss]tate:/!d' -e 's/[Ss]tate:.*\s//') FNAME=$(realpath /var/lib/lxc/${CNAME}/config) BOOT=$(check_boot_level "${FNAME}" 0) ${ECHO_OFF} "${BOOT} ${CNAME} ${FNAME}" BOOTLIST="${BOOTLIST} ${BOOT} ${CNAME} ${FNAME}" fi done fi # Need to deal with the condition where VMLIST is not NULL... SORTBOOT=$( echo -n "$BOOTLIST" | sort --key=1nr,4 ) ${ECHO} "START_LEVEL = ${START_LEVEL} ${DELAY}" echo "$SORTBOOT" | while read PRIORITY POST_DELAY CNAME CONFIG do if [[ ${PRIORITY} = "" ]] then continue; fi # Only one startup per config! # We sorted on this but this is only good if # it's within the same priority! Not robust! if [[ "${CONFIG}" == "${LASTCONFIG}" ]] then continue fi LASTCONFIG="${CONFIG}" if [[ ${PRIORITY} -ge ${START_LEVEL} ]] then STATUS=$(lxc-info -n ${CNAME} 2> /dev/null | sed -e '/[Ss]tate:/!d' -e 's/[Ss]tate:.*\s//') if [[ ${STATUS} == "" ]] then ${ECHO} "Unknown container: ${PRIORITY} ${POST_DELAY} \"${CNAME}\" \"${CONFIG}\"" elif [[ ${STATUS} != "STOPPED" ]] then ${ECHO} "Not Stopped: ${PRIORITY} ${POST_DELAY} \"${CNAME}\" \"${CONFIG}\"" else ${ECHO} "Will boot: ${PRIORITY} ${POST_DELAY} \"${CNAME}\" \"${CONFIG}\"" LXC_LOGDIR=$(dirname "${CONFIG}") log_rotate ${LXC_LOGDIR}/console_out.log ${LXC_LOGDIR}/console_log.log ${LXC_LOGDIR}/logfile.log if [[ ${DELAY} != "" && ${DELAY} -gt 0 ]] then sleep ${DELAY} fi lxc-start -d -c ${LXC_LOGDIR}/console_out.log -L ${LXC_LOGDIR}/console_log.log -o ${LXC_LOGDIR}/logfile.log -n ${CNAME} # Now set the delay to this container's delay... DELAY=${POST_DELAY} fi else ${ECHO} "Won't boot: ${PRIORITY} ${POST_DELAY} \"${CNAME}\" \"${CONFIG}\"" fi done
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