keepalived 配置文件中 shell 脚本中case选择语句写法

admin

cat /etc/init.d/keepalived
3 ?/ n0 L9 B* Q) l; S8 }- q#! /bin/sh
#
# keepalived   LVS cluster monitor daemon.
#
#              Written by Andres Salomon <dilinger@voxel.net>
  m# n* M% M: R#
### BEGIN INIT INFO
/ B" @; o6 S' T% K! T/ C4 o# Provides:          keepalived
( m* d! D: g1 C3 k2 g4 y+ T# Required-Start:    $syslog $network $remote_fs
# Required-Stop:     $syslog $network $remote_fs
) c8 d. Z& _3 j$ K/ }' g+ X# Default-Start:     2 3 4 5
& _9 s; @, K* L! U) X0 F# Default-Stop:      0 1 6
# Short-Description: Starts keepalived
4 E, w8 i( A. ~2 _: a, F( J0 o# Description:       Starts keepalived lvs loadbalancer
### END INIT INFO
) d, t1 H  I9 fPATH=/sbin:/bin:/usr/sbin:/usr/bin
- v( E; ?% I6 O& X3 r  a4 MDAEMON=/usr/sbin/keepalived
NAME=keepalived
DESC=keepalived
4 U, z. _' u4 E9 hCONFIG=/etc/keepalived/keepalived.conf
TMPFILES="/tmp/.vrrp /tmp/.healthcheckers"
#includes lsb functions
4 L/ f/ W1 q1 K* j& r1 e. /lib/lsb/init-functions
2 O; S* B% B* e( p" ?2 E6 _test -f $CONFIG || exit 0
test -f $DAEMON || exit 0
! `! P3 V; _  k" i
! Q& A9 d$ b! }# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME
# k% W# k7 M" |% f. f6 qcase "$1" in
  start)
& R% k/ g% `7 k! J4 X        log_daemon_msg "Starting $DESC" "$NAME"
for file in $TMPFILES
do
' I& n8 U' ^! O0 z. S         test -e $file && test ! -L $file && rm $file
done
$ L+ A# h/ B2 l. Y- L* D- N if start-stop-daemon --start --quiet --pidfile /var/run/$NAME.pid \
) @4 @# E3 ^+ i3 K- P2 r7 H               --exec $DAEMON -- $DAEMON_ARGS; then
  log_end_msg 0
8 o) ?+ n2 a5 e( J else
  log_end_msg 1
' e$ `; P" C$ o, c fi
       ;;
% u8 W% `: i0 [% @8 ]& [$ `: A6 n  stop)
log_daemon_msg "Stopping $DESC" "$NAME"
! `# y2 n# A$ _6 h$ J. D3 | if start-stop-daemon --oknodo --stop --quiet --pidfile /var/run/$NAME.pid \
         --exec $DAEMON; then
6 e4 y$ I% `( u* h+ Q, [" M. I% m  log_end_msg 0
else
9 J1 J! |) I" s: Y  log_end_msg 1
" O) }+ h5 s& p, x' h fi
& @9 h; L, t4 O/ l/ x" ~% v, I6 M       ;;
+ F( D9 C+ [4 c0 y  reload|force-reload)
. O3 P+ v$ C$ p* [7 F log_action_begin_msg "Reloading $DESC configuration..."
       if start-stop-daemon --stop --quiet --signal 1 --pidfile \
               /var/run/$NAME.pid --exec $DAEMON; then
+ f6 S2 L, }' L  Y5 z1 C. o/ h        log_end_msg 0
- Y- p$ E5 m) T- U: ~8 e: A7 a else
  log_action_end_msg 1
fi
       ;;
3 H; q. z; Y* K9 K5 O2 `9 v  restart)
   log_action_begin_msg "Restarting $DESC" "$NAME"
        start-stop-daemon --stop --quiet --pidfile \
  /var/run/$NAME.pid --exec $DAEMON || true
       sleep 1
       if start-stop-daemon --start --quiet --pidfile \
! N$ D5 f  S6 z- G+ `               /var/run/$NAME.pid --exec $DAEMON -- $DAEMON_ARGS; then
        log_end_msg 0
# u' m3 p' P$ \6 f" g% u8 @ else
  log_end_msg 1
fi
       ;;
  *)
* X& l& U  k  x& Q0 _3 }       echo "Usage: /etc/init.d/$NAME {start|stop|restart|reload|force-reload}" >&2
       exit 1
; @7 M  z5 u% _$ M. @& W1 X4 o* l       ;;
esac
exit 0