You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
salt/salt-minion

325 lines
7.6 KiB

#!/bin/sh
#
# Salt minion
###################################
# LSB header
### BEGIN INIT INFO
# Provides: salt-minion
# Required-Start: $all
# Required-Stop:
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Salt minion daemon
# Description: This is the Salt minion daemon that can be controlled by the
# Salt master.
### END INIT INFO
# chkconfig header
# chkconfig: 345 97 04
# description: This is the Salt minion daemon that can be controlled by the Salt master.
#
# processname: /usr/bin/salt-minion
# Allow these to be overridden for tests
: "${SALTMINION_BINDIR:=/usr/bin}"
: "${SALTMINION_SYSCONFDIR:=/etc}"
# Default values (can be overridden in settings file)
: "${USER:=$(id -nu)}"
SALTMINION="${SALTMINION_BINDIR}/salt-minion"
SALTCALL="${SALTMINION_BINDIR}/salt-call"
# SALTMINION_CONFIGS are newline-separated entries of: MINION_USER CONFIG_DIR
: "${SALTMINION_CONFIGS:="
$USER ${SALTMINION_SYSCONFDIR}/salt
"}"
SALTMINION_ARGS=""
SALTMINION_TIMEOUT=30
SALTMINION_TICK=1
SERVICE="salt-minion"
# Read in settings file
if [ -f "${SALTMINION_SYSCONFDIR}/default/salt" ]; then
. "${SALTMINION_SYSCONFDIR}/default/salt"
elif [ -f "${SALTMINION_SYSCONFDIR}/sysconfig/salt" ]; then
. "${SALTMINION_SYSCONFDIR}/sysconfig/salt"
fi
RETVAL=0
NS_NOTRIM="--notrim"
ERROR_TO_DEVNULL="/dev/null"
_su_cmd() {
local user="$1"
shift
if [ "X$USER" = "X$user" ]; then
eval $1
else
su -l -c "$1" "$user"
fi
}
_get_pid() {
netstat $NS_NOTRIM -ap --protocol=unix 2>$ERROR_TO_DEVNULL \
| sed -r -e "\|\s${SOCK_DIR}/minion_event_${MINION_ID_HASH}_pub\.ipc$|"'!d; s|/.*||; s/.*\s//;' \
| uniq
}
_is_running() {
[ -n "$(_get_pid)" ]
}
_get_salt_config_value() {
_su_cmd \
"$MINION_USER" \
"\
\"$SALTCALL\" \
-c \"$CONFIG_DIR\" \
--no-color \
--local config.get \
\"$1\" \
" \
2>$ERROR_TO_DEVNULL \
| sed -r -e '2!d; s/^\s*//;'
}
_make_id_hash() {
# $1 - minion_id
local hasher=''
case "$(_get_salt_config_value hash_type)" in
(md5) hasher="md5sum";;
(sha1) hasher="sha1sum";;
(sha224) hasher="sha224sum";;
(sha256) hasher="sha256sum";;
(sha384) hasher="sha384sum";;
(sha512) hasher="sha512sum";;
(*) echo "ERROR: No salt hash_type specified";;
esac
if [ -n "$hasher" ]; then
printf "$1" | "$hasher" | cut -c 1-10
fi
}
start() {
# $1 - config dir
local retval=0
if _is_running; then
echo "Service $SERVICE:$MINION_USER:$MINION_ID already running"
return 0
fi
echo -n "Starting $SERVICE:$MINION_USER:$MINION_ID daemon: "
_su_cmd \
"$MINION_USER" \
"\
\"$SALTMINION\" \
-c \"$CONFIG_DIR\" \
-d $SALTMINION_ARGS \
${SALTMINION_DEBUG:+-l debug} \
" \
2>$ERROR_TO_DEVNULL \
|| retval=$?
if [ 0 -eq "$retval" ]; then
local endtime=$(($(date '+%s')+$SALTMINION_TIMEOUT))
while ! _is_running; do
if [ "$endtime" -lt "$(date '+%s')" ]; then
echo -n "TIMEOUT "
retval=1
break
fi
sleep $SALTMINION_TICK
done
fi
if [ 0 -eq "$retval" ]; then
echo -n "OK"
else
echo -n "FAIL"
if [ -n "$SALTMINION_DEBUG" ]; then
printf "\nPROCESSES:\n" >&2
ps wwwaxu | grep '[s]alt-minion' >&2
printf "\nSOCKETS:\n" >&2
netstat $NS_NOTRIM -ap --protocol=unix | grep 'salt.*minion' >&2
printf "\nLOG_FILE:\n" >&2
tail -n 20 "$LOG_FILE" >&2
printf "\nENVIRONMENT:\n" >&2
env >&2
fi
fi
echo
return $retval
}
stop() {
# $1 - config dir
local retval=0
if ! _is_running; then
echo "Service $SERVICE:$MINION_USER:$MINION_ID is not running"
return 0
fi
echo -n "Stopping $SERVICE:$MINION_USER:$MINION_ID daemon: "
local pid="$(_get_pid)"
# pid below is intentionally not quoted in case there are *multiple*
# minions running with the same configuration.
_su_cmd "$MINION_USER" "kill -TERM $pid 2>/dev/null" || retval=$?
if [ 0 -eq "$retval" ]; then
local endtime=$(($(date '+%s')+$SALTMINION_TIMEOUT))
while _is_running; do
if [ "$endtime" -lt "$(date '+%s')" ]; then
# Try one more time with a big hammer
_su_cmd "$MINION_USER" "kill -KILL $pid 2>/dev/null" || :
sleep $SALTMINION_TICK
if _is_running; then
echo -n "TIMEOUT "
retval=1
fi
break
fi
sleep 1
done
fi
if [ 0 -eq "$retval" ]; then
rm -f "$PID_FILE"
echo -n "OK"
else
echo -n "FAIL"
fi
echo
return $retval
}
status() {
local retval=0
local pid="$(_get_pid)"
if [ -n "$pid" ]; then
# Unquote $pid here to display multiple PIDs in one line
echo "$SERVICE:$MINION_USER:$MINION_ID is running:" $pid
else
retval=3
echo "$SERVICE:$MINION_USER:$MINION_ID is stopped."
if [ -e "$PID_FILE" ]; then
echo "$SERVICE:$MINION_USER:$MINION_ID has orphaned pid file: $PID_FILE."
retval=1
fi
fi
return $retval
}
restart() {
# $1 - config dir
stop "$1"
start "$1"
}
main() {
if [ -n "$SALTMINION_DEBUG" ]; then
set -x
ERROR_TO_DEVNULL="&2"
fi
# Check to see if --notrim is a valid netstat option
if netstat --notrim 2>&1 >/dev/null | grep -q 'unrecognized'; then
NS_NOTRIM=''
fi
# Pre-filter for unhandled commands
case "$1" in
(start|stop|status|restart|condrestart|try-restart) ;;
(reload)
echo "Can't reload $SERVICE - you must restart it"
exit 3
;;
(*)
echo "Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload}"
exit 2
;;
esac
while read MINION_USER CONFIG_DIR; do
if [ -z "$CONFIG_DIR" ]; then
continue
fi
if ! [ -d "$CONFIG_DIR" ]; then
echo "ERROR: non-existent $SERVICE config directory: $CONFIG_DIR"
RETVAL=1
continue
fi
SOCK_DIR="$(_get_salt_config_value sock_dir)"
PID_FILE="$(_get_salt_config_value pidfile)"
LOG_FILE="$(_get_salt_config_value log_file)"
MINION_ID="$(_get_salt_config_value id)"
MINION_ID_HASH="$(_make_id_hash "$MINION_ID")"
if [ \
-z "$SOCK_DIR" \
-o -z "$PID_FILE" \
-o -z "$LOG_FILE" \
-o -z "$MINION_ID" \
-o -z "$MINION_ID_HASH" \
]; then
echo "ERROR: Unable to look-up config values for $CONFIG_DIR"
RETVAL=1
continue
fi
# See how we were called.
case "$1" in
(start|stop|restart|status)
"$1" || RETVAL=$?
;;
(condrestart|try-restart)
if ! _is_running; then
RETVAL=7
else
stop
start || RETVAL=$?
fi
;;
(*)
echo "Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload}"
RETVAL=2
;;
esac
done <<EOF
$SALTMINION_CONFIGS
EOF
exit $RETVAL
}
if [ "$#" = 0 ]; then
main
else
main "$@"
fi