templates/default/2.4/sysvinit/ubuntu-14.04/apache2.erb
#!/bin/sh
### BEGIN INIT INFO
# Provides: <%= @apache_name %>
# Required-Start: $local_fs $remote_fs $network $syslog $named
# Required-Stop: $local_fs $remote_fs $network $syslog $named
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# X-Interactive: true
# Short-Description: Start/stop apache2 web server
# Description: Start the web server and associated helpers
# This script will start apache2, and possibly all associated instances.
# Moreover, it will set-up temporary directories and helper tools such as
# htcacheclean when required by the configuration.
### END INIT INFO
# set -x
DESC="web server"
NAME=apache2
DAEMON=/usr/sbin/$NAME
SCRIPTNAME="${0##*/}"
SCRIPTNAME="${SCRIPTNAME##[KS][0-9][0-9]}"
if [ -n "$APACHE_CONFDIR" ] ; then
if [ "${APACHE_CONFDIR##/etc/apache2-}" != "${APACHE_CONFDIR}" ] ; then
DIR_SUFFIX="${APACHE_CONFDIR##/etc/apache2-}"
else
DIR_SUFFIX=
fi
elif [ "${SCRIPTNAME##apache2-}" != "$SCRIPTNAME" ] ; then
DIR_SUFFIX="-${SCRIPTNAME##apache2-}"
APACHE_CONFDIR=/etc/apache2$DIR_SUFFIX
else
DIR_SUFFIX=
APACHE_CONFDIR=/etc/apache2
fi
if [ -z "$APACHE_ENVVARS" ] ; then
APACHE_ENVVARS=$APACHE_CONFDIR/envvars
fi
export APACHE_CONFDIR APACHE_ENVVARS
ENV="env -i LANG=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
if [ "$APACHE_CONFDIR" != /etc/apache2 ] ; then
ENV="$ENV APACHE_CONFDIR=$APACHE_CONFDIR"
fi
if [ "$APACHE_ENVVARS" != "$APACHE_CONFDIR/envvars" ] ; then
ENV="$ENV APACHE_ENVVARS=$APACHE_ENVVARS"
fi
#edit /etc/default/apache2 to change this.
HTCACHECLEAN_RUN=auto
HTCACHECLEAN_MODE=daemon
HTCACHECLEAN_SIZE=300M
HTCACHECLEAN_DAEMON_INTERVAL=120
HTCACHECLEAN_PATH=/var/cache/apache2$DIR_SUFFIX/mod_cache_disk
HTCACHECLEAN_OPTIONS=""
# Read configuration variable file if it is present
if [ -f /etc/default/apache2$DIR_SUFFIX ] ; then
. /etc/default/apache2$DIR_SUFFIX
elif [ -f /etc/default/apache2 ] ; then
. /etc/default/apache2
fi
PIDFILE=$(. $APACHE_ENVVARS && echo $APACHE_PID_FILE)
VERBOSE=no
if [ -f /etc/default/rcS ]; then
. /etc/default/rcS
fi
. /lib/lsb/init-functions
# Now, set defaults:
APACHE2CTL="$ENV apache2ctl"
HTCACHECLEAN="$ENV htcacheclean"
PIDFILE=$(. $APACHE_ENVVARS && echo $APACHE_PID_FILE)
APACHE2_INIT_MESSAGE=""
CONFTEST_OUTFILE=
cleanup() {
if [ -n "$CONFTEST_OUTFILE" ] ; then
rm -f "$CONFTEST_OUTFILE"
fi
}
trap cleanup 0 # "0" means "EXIT", but "EXIT" is not portable
apache_conftest() {
[ -z "$CONFTEST_OUTFILE" ] || rm -f "$CONFTEST_OUTFILE"
CONFTEST_OUTFILE=$(mktemp)
if ! $APACHE2CTL configtest > "$CONFTEST_OUTFILE" 2>&1 ; then
return 1
else
rm -f "$CONFTEST_OUTFILE"
CONFTEST_OUTFILE=
return 0
fi
}
clear_error_msg() {
[ -z "$CONFTEST_OUTFILE" ] || rm -f "$CONFTEST_OUTFILE"
CONFTEST_OUTFILE=
APACHE2_INIT_MESSAGE=
}
print_error_msg() {
[ -z "$APACHE2_INIT_MESSAGE" ] || log_warning_msg "$APACHE2_INIT_MESSAGE"
if [ -n "$CONFTEST_OUTFILE" ] ; then
echo "Output of config test was:" >&2
cat "$CONFTEST_OUTFILE" >&2
rm -f "$CONFTEST_OUTFILE"
CONFTEST_OUTFILE=
fi
}
apache_wait_start() {
local STATUS=$1
local i=0
while : ; do
PIDTMP=$(pidofproc -p $PIDFILE $DAEMON)
if [ -n "${PIDTMP:-}" ] && kill -0 "${PIDTMP:-}" 2> /dev/null; then
return $STATUS
fi
if [ $i = "20" ] ; then
APACHE2_INIT_MESSAGE="The apache2$DIR_SUFFIX instance did not start within 20 seconds. Please read the log files to discover problems"
return 2
fi
[ "$VERBOSE" != no ] && log_progress_msg "."
sleep 1
i=$(($i+1))
done
}
apache_wait_stop() {
local STATUS=$1
PIDTMP=$(pidofproc -p $PIDFILE $DAEMON)
if [ -n "${PIDTMP:-}" ] && kill -0 "${PIDTMP:-}" 2> /dev/null; then
local i=0
while kill -0 "${PIDTMP:-}" 2> /dev/null; do
if [ $i = '60' ]; then
break
STATUS=2
fi
[ "$VERBOSE" != no ] && log_progress_msg "."
sleep 1
i=$(($i+1))
done
return $STATUS
else
return $STATUS
fi
}
#
# Function that starts the daemon/service
#
do_start()
{
# Return
# 0 if daemon has been started
# 1 if daemon was already running
# 2 if daemon could not be started
if pidofproc -p $PIDFILE "$DAEMON" > /dev/null 2>&1 ; then
return 1
fi
if apache_conftest ; then
$APACHE2CTL start
apache_wait_start $?
return $?
else
APACHE2_INIT_MESSAGE="The apache2$DIR_SUFFIX configtest failed."
return 2
fi
}
#
# Function that stops the daemon/service
#
do_stop()
{
# Return
# 0 if daemon has been stopped
# 1 if daemon was already stopped
# 2 if daemon could not be stopped
# other if a failure occurred
# either "stop" or "graceful-stop"
local STOP=$1
# can't use pidofproc from LSB here
local AP_RET=0
if pidof $DAEMON > /dev/null 2>&1 ; then
if [ -e $PIDFILE ] && pidof $DAEMON | tr ' ' '\n' | grep -w $(cat $PIDFILE) > /dev/null 2>&1 ; then
AP_RET=2
else
AP_RET=1
fi
else
AP_RET=0
fi
# AP_RET is:
# 0 if Apache (whichever) is not running
# 1 if Apache (whichever) is running
# 2 if Apache from the PIDFILE is running
if [ $AP_RET = 0 ] ; then
return 1
fi
if [ $AP_RET = 2 ] && apache_conftest ; then
$APACHE2CTL $STOP > /dev/null 2>&1
apache_wait_stop $?
return $?
else
if [ $AP_RET = 2 ]; then
clear_error_msg
APACHE2_INIT_MESSAGE="The apache2$DIR_SUFFIX configtest failed, so we are trying to kill it manually. This is almost certainly suboptimal, so please make sure your system is working as you'd expect now!"
killproc -p $PIDFILE $DAEMON
apache_wait_stop $?
return $?
elif [ $AP_RET = 1 ] ; then
APACHE2_INIT_MESSAGE="There are processes named 'apache2' running which do not match your pid file which are left untouched in the name of safety, Please review the situation by hand".
return 2
fi
fi
}
#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
if apache_conftest; then
if ! pidofproc -p $PIDFILE "$DAEMON" > /dev/null 2>&1 ; then
APACHE2_INIT_MESSAGE="Apache2 is not running"
return 2
fi
$APACHE2CTL graceful > /dev/null 2>&1
return $?
else
APACHE2_INIT_MESSAGE="The apache2$DIR_SUFFIX configtest failed. Not doing anything."
return 2
fi
}
check_htcacheclean() {
[ "$HTCACHECLEAN_MODE" = "daemon" ] || return 1
[ "$HTCACHECLEAN_RUN" = "yes" ] && return 0
MODSDIR=$(. $APACHE_ENVVARS && echo $APACHE_MODS_ENABLED)
[ "$HTCACHECLEAN_RUN" = "auto" \
-a -e ${MODSDIR:-$APACHE_CONFDIR/mods-enabled}/cache_disk.load ] && \
return 0
return 1
}
start_htcacheclean() {
$HTCACHECLEAN $HTCACHECLEAN_OPTIONS -d$HTCACHECLEAN_DAEMON_INTERVAL \
-i -p$HTCACHECLEAN_PATH -l$HTCACHECLEAN_SIZE
}
stop_htcacheclean() {
pkill -P 1 -f "htcacheclean.* -p$HTCACHECLEAN_PATH " 2> /dev/null || return 1
}
# Sanity checks. They need to occur after function declarations
[ -x $DAEMON ] || exit 0
if [ ! -x $DAEMON ] ; then
echo "No apache-bin package installed"
exit 0
fi
if [ -z "$PIDFILE" ] ; then
echo ERROR: APACHE_PID_FILE needs to be defined in $APACHE_ENVVARS >&2
exit 2
fi
if check_htcacheclean ; then
if [ ! -d "$HTCACHECLEAN_PATH" ] ; then
echo "htcacheclean is configured, but directory $HTCACHECLEAN_PATH does not exist!" >&2
exit 2
fi
fi
case "$1" in
start)
log_daemon_msg "Starting $DESC" "$NAME"
do_start
RET_STATUS=$?
case "$RET_STATUS" in
0|1)
log_success_msg
[ "$VERBOSE" != no ] && [ $RET_STATUS = 1 ] && log_warning_msg "Server was already running"
if check_htcacheclean ; then
[ "$VERBOSE" != no ] && log_daemon_msg "Starting HTTP cache cleaning daemon" "htcacheclean"
start_htcacheclean
[ "$VERBOSE" != no ] && log_end_msg $?
fi
;;
2)
log_failure_msg
print_error_msg
exit 1
;;
esac
;;
stop|graceful-stop)
log_daemon_msg "Stopping $DESC" "$NAME"
do_stop "$1"
RET_STATUS=$?
case "$RET_STATUS" in
0|1)
log_success_msg
[ "$VERBOSE" != no ] && [ $RET_STATUS = 1 ] && log_warning_msg "Server was not running"
;;
2)
log_failure_msg
print_error_msg
exit 1
;;
esac
print_error_msg
if check_htcacheclean ; then
[ "$VERBOSE" != no ] && log_daemon_msg "Stopping HTTP cache cleaning daemon" "htcacheclean"
stop_htcacheclean
[ "$VERBOSE" != no ] && log_end_msg $?
fi
;;
status)
status_of_proc -p $PIDFILE "apache2" "$NAME"
exit $?
;;
reload|force-reload|graceful)
log_daemon_msg "Reloading $DESC" "$NAME"
do_reload
RET_STATUS=$?
case "$RET_STATUS" in
0|1)
log_success_msg
[ "$VERBOSE" != no ] && [ $RET_STATUS = 1 ] && log_warning_msg "Server was already running"
;;
2)
log_failure_msg
print_error_msg
exit 1
;;
esac
print_error_msg
;;
restart)
log_daemon_msg "Restarting $DESC" "$NAME"
do_stop stop
case "$?" in
0|1)
do_start
case "$?" in
0)
log_end_msg 0
;;
1|*)
log_end_msg 1 # Old process is still or failed to running
print_error_msg
exit 1
;;
esac
;;
*)
# Failed to stop
log_end_msg 1
print_error_msg
exit 1
;;
esac
;;
start-htcacheclean)
log_daemon_msg "Starting htcacheclean"
start_htcacheclean
log_end_msg $?
exit $?
;;
stop-htcacheclean)
log_daemon_msg "Stopping htcacheclean"
stop_htcacheclean
log_end_msg $?
exit $?
;;
*)
echo "Usage: $SCRIPTNAME {start|stop|graceful-stop|restart|reload|force-reload|start-htcacheclean|stop-htcacheclean}" >&2
exit 3
;;
esac
exit 0
# vim: syntax=sh ts=4 sw=4 sts=4 sr noet