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|
#! /bin/bash
#
# This is special script for start,stop,restart of quagga daemons
#
# debug
# echo $* | logger -p local7.debug -t quagga-manager
usage() {
echo "Usage: $0 {check|start|stop|restart} {bgpd|ospfd|ripd|ospf6d|ripngd}"
exit 1
}
if [ $# -lt 1 ]; then
usage
fi
if [ $EUID -ne 0 ]; then
echo "must be root!"
exit 1
fi
pid_dir=/var/run/vyatta/quagga
log_dir=/var/log/vyatta/quagga
check() {
local daemon=$1
[ -f ${pid_dir}/${daemon}.pid ] || start $daemon
}
start() {
local daemon=$1
local exe_file=/usr/sbin/vyatta-$daemon
if [ ! -x $exe_file ]; then
echo "Unknown daemon $daemon"
exit 1
fi
local -a args=( -d -P 0 -i ${pid_dir}/${daemon}.pid )
case $daemon in
zebra) args+=( -l -S -s 1048576 ) ;;
watchquagga)
args=( -dz -p ${pid_dir}/${daemon}.pid );
# Note: at present ospf/rip only monitored if actually active
# probably should get smarter in future here
local -a protocols=(`/opt/vyatta/bin/vyatta-show-protocols exists`)
if [ ${#protocols[*]} -eq 0 ]
then
# Only zebra: mode 1 simple restart
args+=( -R "$0 restart zebra" zebra )
else
# With routing protocols: phased restart
args+=( -A -r "$0 restart %s" )
args+=( -s "$0 reload %s" )
args+=( -k "$0 stop %s" )
args+=( zebra ${protocols[*]} )
fi
;;
esac
start-stop-daemon --start --quiet --oknodo \
--chdir $log_dir --exec $exe_file \
-- "${args[@]}"
}
stop() {
local daemon=$1
local exe_file=/usr/sbin/vyatta-$daemon
start-stop-daemon --stop --quiet --oknodo --retry 5 \
--exec $exe_file --pidfile=$pid_dir/${daemon}.pid
rm -f $pid_dir/${daemon}.pid
}
get_protocol() {
local daemon=$1
case $daemon in
bgpd|ospfd|ripd|ripngd|isisd) echo ${daemon/%d/};;
ospf6d) echo "ospfv3";;
*) echo "Unknown daemon $daemon" 1>&2; exit 1;;
esac
}
reload_config() {
local daemon=$1
local proto=$(get_protocol $daemon)
local vyatta_cfg=/opt/vyatta/config/active
local path=$vyatta_cfg/protocols/$proto
# If daemon does not have config nothing to do.
[ -d $path ] || return;
# Begin reloading transaction
/opt/vyatta/sbin/vyatta-cfg-cmd-wrapper begin || exit 1
# In case of error undo
trap "/opt/vyatta/sbin/vyatta-cfg-cmd-wrapper end" EXIT HUP INT QUIT TERM
# Save current configuration
tmp=/tmp/${daemon}-restart.$$
/opt/vyatta/sbin/vyatta-save-config.pl $tmp || exit 1
# Erase portion of active configuration for that protocol
rm -fr $path
# special case for interface, remove parameters force reload
case $proto in
rip|ospf)
find $vyatta_cfg/interfaces -type d -path "*/ip/$proto" \
-exec rm -fr '{}' \; ;;
ripng|ospfv3)
find $vyatta_cfg/interfaces -type d -path "*/ipv6/$proto" \
-exec rm -fr '{}' \; ;;
esac
# Reload causing configuration to activate - implies commit
/opt/vyatta/sbin/vyatta-load-config.pl $tmp || exit 1
# remove tmp file if successful
rm $tmp
trap "" EXIT HUP INT QUIT TERM
}
# Check if interface configuration exists for this protocol
okay_to_stop() {
local daemon=$1
local proto=$(get_protocol $daemon)
local cfg=/opt/vyatta/config/active/interfaces
case $proto in
rip|ospf)
return $(find $cfg -type d -path "*/ip/$proto" | wc -l);;
ripng|ospfv3)
return $(find $cfg -type d -path "*/ipv6/$proto" | wc -l);;
*)
return 0;;
esac
}
update() {
# get list of daemons deleted and added in current transaction
local -a deleted=( `/opt/vyatta/bin/vyatta-show-protocols deleted` )
local -a added=( `/opt/vyatta/bin/vyatta-show-protocols added` )
# nothing lost, nothing gained
[ ${#deleted[*]} -eq 0 -a ${#added[*]} -eq 0 ] && exit 0
# Stop watcher (or it will restart daemons!)
stop watchquagga
# Cleanup any daemons no longer needed
for p in ${deleted[*]}
do
# Need daemon to hold state of interface
if okay_to_stop $p
then stop $p
fi
done
start watchquagga
}
case "$1" in
check) check $2;;
start) start $2;;
stop) stop $2;;
update) update;;
reload) start $2; reload_config $2;;
restart) stop $2; start $2;;
*) usage;;
esac
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