199 lines
4.9 KiB
Bash
199 lines
4.9 KiB
Bash
#!/bin/bash
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set -e
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shopt -s nullglob
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showUsage()
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{
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cat <<EOF
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Usage: $0 [OPTION] PATH
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This command repopulates a folder with systemd configuration files and updates
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the configuration so that obsolete services will be stoppped and new services
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will be started.
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Options:
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-p, --profile=NAME Name of the Nix profile that stores the sysvinit scripts
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(defaults to: processes)
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-o, --old-profile=PATH
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Path to the previously deployed Nix profile (by default,
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it gets auto detected)
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--state-dir Changes the directory in which the state of the
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processes are stored
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--runtime-dir Changes the directory in which the PID files are stored
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--log-dir Changes the directory in which the log files are stored
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--tmp-dir Changes the directory in which temp files are stored
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--force-disable-user-change
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Forces to not create users, groups or change user
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permissions
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--show-trace Shows a trace of the output
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-h, --help Shows the usage of this command
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Environment:
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NIX_STATE_DIR Overrides the location of the Nix state directory
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SYSTEMD_TARGET_DIR Directory in which the unit configuration files are
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managed (defaults to: /etc/systemd/system)
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NIXPROC_STATE_DIR Changes the directory in which the state of the
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processes is stored
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NIXPROC_RUNTIME_DIR Changes the directory in which the PID files are stored
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NIXPROC_LOG_DIR Changes the directory in which log files are stored
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NIXPROC_TMP_DIR Changes the directory in which temp files are stored
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NIXPROC_FORCE_DISABLE_USER_CHANGE
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Forces to not create users, groups or change user
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permissions
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EOF
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}
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# Parse valid argument options
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PARAMS=`@getopt@ -n $0 -o p:o:h -l profile:,old-profile:,state-dir:,runtime-dir:,log-dir:,tmp-dir:,force-disable-user-change,show-trace,help -- "$@"`
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if [ $? != 0 ]
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then
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showUsage
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exit 1
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fi
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# Evaluate valid options
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eval set -- "$PARAMS"
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while [ "$1" != "--" ]
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do
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case "$1" in
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-p|--profile)
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profile="$2"
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;;
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-o|--old-profile)
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oldProfilePath="$2"
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;;
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--state-dir)
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stateDirArg="--state-dir $2"
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;;
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--runtime-dir)
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runtimeDirArg="--runtime-dir $2"
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;;
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--log-dir)
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logDirArg="--log-dir $2"
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;;
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--tmp-dir)
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tmpDirArg="--tmp-dir $2"
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;;
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--force-disable-user-change)
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forceDisableUserChangeArg="--force-disable-user-change"
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;;
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--show-trace)
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showTraceArg="--show-trace"
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;;
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-h|--help)
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showUsage
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exit 0
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;;
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esac
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shift
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done
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shift
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path="$1"
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# Validate the given options
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SYSTEMD_TARGET_DIR=${SYSTEMD_TARGET_DIR:-/etc/systemd/system}
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source @commonchecks@
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checkNixStateDir
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checkProfile
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composeOldProfilePath
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# Build the environment with supervisord config files
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buildProfile systemd
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# Determine paths of old units
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oldunits=()
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if [ -d "$oldProfilePath" ]
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then
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for i in $oldProfilePath/etc/systemd/system/*.service
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do
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currentPath=$(readlink -f "$i")
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oldunits+=($currentPath)
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done
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fi
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# Determine paths of new units
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newunits=()
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for i in $profilePath/etc/systemd/system/*.service
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do
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currentPath=$(readlink -f "$i")
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newunits+=($currentPath)
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done
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# Create new groups and users
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createNewGroups
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createNewUsers
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if [ "$oldProfilePath" != "" ]
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then
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# Stop obsolete units
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for i in $oldProfilePath/etc/systemd/system/*.service
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do
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if ! containsElement "$(readlink -f "$i")" "${newunits[@]}"
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then
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systemctl stop "$(basename "$i")"
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fi
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done
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# Remove obsolete units
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for i in $oldProfilePath/etc/systemd/system/*.service
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do
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if ! containsElement "$(readlink -f "$i")" "${newunits[@]}"
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then
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unitTargetPath="$SYSTEMD_TARGET_DIR/$(basename "$i")"
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rm -f "$unitTargetPath"
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if [ -d "$i.wants" ]
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then
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rm -f "$unitTargetPath.wants"
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fi
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fi
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done
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fi
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# Add new units
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for i in $profilePath/etc/systemd/system/*.service
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do
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if ! containsElement "$(readlink -f "$i")" "${oldunits[@]}"
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then
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if [ -d "$i.wants" ]
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then
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ln -sfn "$(readlink -f "$i.wants")" $SYSTEMD_TARGET_DIR
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fi
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ln -sfn "$(readlink -f "$i")" $SYSTEMD_TARGET_DIR/$(basename "$i")
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fi
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done
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# Reload the systemd configuration
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systemctl daemon-reload
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# Start all units in the new configuration
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for i in $profilePath/etc/systemd/system/*.service
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do
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systemctl start "$(basename "$i")"
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done
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# Delete obsolete users and groups
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deleteObsoleteUsers
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deleteObsoleteGroups
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# Set new profile
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setNixProfile
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