Systemd
動物園管理員的初始化腳本
我已經看到 zookeeper 的開發人員有一個很棒的 zkServer.sh 腳本來啟動、停止、重新啟動等 zookeeper，但我不知道為什麼他們決定跳過使用 init 腳本。
例如，使用 zkServer.sh 腳本無法將 zookeeper 設置為在伺服器啟動時執行。
所以有人知道如何環繞或一個可用且正確工作的zookeeper初始化腳本嗎？
這是 zkServer.sh 文件的連結
https://github.com/apache/zookeeper/blob/master/bin/zkServer.sh謝謝你的幫助
這是我的範例初始化腳本，我只需要一些幫助調整
#!/bin/bash # # /etc/init.d/zookeeper # # Startup script for Zookeeper # # chkconfig: 2345 80 20 # description: Starts and stops Zookeeper # pidfile: /var/run/zookeeper/zookeeper.pid ### BEGIN INIT INFO # Provides: zookeeper # Required-Start: $remote_fs $network $named $time # Required-Stop: $remote_fs $network $named $time # Should-Start: ntp mdadm # Should-Stop: ntp mdadm # Default-Start: 2 3 4 5 # Default-Stop: 0 1 6 # Short-Description: distributed storage system for structured data # Description: Zookeeper is a distributed (peer-to-peer) system for # the management and storage of structured data. ### END INIT INFO . /etc/rc.d/init.d/functions #export ZK_HOME=/usr/share/zookeeper #export ZK_CONF=/etc/zookeeper/conf #export ZK_INCLUDE=$ZK_HOME/zookeeper.in.sh export ZK_HOME=/zookeeper/opt/zookeeper export ZK_CONF=/zookeeper/opt/zookeeper/conf export ZK_INCLUDE=$ZK_HOME/bin/zookeeper.in.sh #export ZK_OWNR=zookeeper export ZK_OWNR=root NAME="zookeeper" log_file=/var/log/zookeeper/zookeeper.log pid_file=/var/run/zookeeper/zookeeper.pid lock_file=/var/lock/subsys/$NAME #ZK_PROG=/usr/sbin/zookeeper ZK_PROG=/zookeeper/opt/zookeeper/bin/zkServer.sh # The first existing directory is used for JAVA_HOME if needed. JVM_SEARCH_DIRS="/usr/lib/jvm/jre /usr/lib/jvm/jre-1.7.* /usr/lib/jvm/java-1.7.*/jre" # Read configuration variable file if it is present [ -r /etc/default/$NAME ] && . /etc/default/$NAME # If JAVA_HOME has not been set, try to determine it. if [ -z "$JAVA_HOME" ]; then # If java is in PATH, use a JAVA_HOME that corresponds to that. This is # both consistent with how the upstream startup script works, and with # the use of alternatives to set a system JVM (as is done on Debian and # Red Hat derivatives). java="`/usr/bin/which java 2>/dev/null`" if [ -n "$java" ]; then java=`readlink --canonicalize "$java"` JAVA_HOME=`dirname "\`dirname \$java\`"` else # No JAVA_HOME set and no java found in PATH; search for a JVM. for jdir in $JVM_SEARCH_DIRS; do if [ -x "$jdir/bin/java" ]; then JAVA_HOME="$jdir" break fi done # if JAVA_HOME is still empty here, punt. fi fi JAVA="$JAVA_HOME/bin/java" export JAVA_HOME JAVA case "$1" in start) # Zookeeper startup echo -n "Starting Zookeeper: " [ -d `dirname "$pid_file"` ] || \ install -m 755 -o $ZK_OWNR -g $ZK_OWNR -d `dirname $pid_file` $ZK_PROG start /zookeeper/opt/zookeeper/conf/zoo.cfg $ZK_CONF -p $pid_file > $log_file 2>&1 retval=$? [ $retval -eq 0 ] && touch $lock_file echo "OK" ;; stop) # Zookeeper shutdown echo -n "Shutdown Zookeeper: " kill `cat $pid_file` retval=$? [ $retval -eq 0 ] && rm -f $lock_file for t in `seq 40`; do status -p $pid_file zookeeper > /dev/null 2>&1 retval=$? if [ $retval -eq 3 ]; then echo "OK" exit 0 else sleep 0.5 fi; done # Adding a sleep here to give jmx time to wind down (ZK-4483). Not ideal... # Adam Holmberg suggests this, but that would break if the jmx port is changed # for t in `seq 40`; do netstat -tnlp | grep "0.0.0.0:7199" > /dev/null 2>&1 && sleep 0.1 || break; done sleep 5 status -p $pid_file zookeeper > /dev/null 2>&1 retval=$? if [ $retval -eq 3 ]; then echo "OK" else echo "ERROR: could not stop $NAME" exit 1 fi ;; reload|restart) $0 stop $0 start ;; status) status -p $pid_file zookeeper exit $? ;; *) echo "Usage: `basename $0` start|stop|status|restart|reload" exit 1 esac exit 0現在的問題是，如果我這樣做
service zookeerper start永遠不會完成，並且如果我從另一個終端會話中查看正在執行的 Zookeeper 服務，我會看到其中的 3 個……當我這樣做時，service zookeeper status我會得到以下資訊● zookeeper.service - LSB: distributed storage system for structured data Loaded: loaded (/etc/rc.d/init.d/zookeeper; bad; vendor preset: disabled) Active: failed (Result: timeout) since Thu 2017-08-24 18:11:00 UTC; 2min 3s ago Docs: man:systemd-sysv-generator(8) Process: 19673 ExecStart=/etc/rc.d/init.d/zookeeper start (code=exited, status=0/SUCCESS) CGroup: /system.slice/zookeeper.service └─19691 /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141-2.b16.el7_4.x86_64/jre/bin/java -Dzookeeper.log.dir=. -Dzookeepe... Aug 24 18:06:00 10.34.227.131 systemd[1]: Starting LSB: distributed storage system for structured data... Aug 24 18:06:01 10.34.227.131 zookeeper[19673]: Starting Zookeeper: OK Aug 24 18:06:01 10.34.227.131 systemd[1]: PID file /var/run/zookeeper/zookeeper.pid not readable (yet?) after start. Aug 24 18:11:00 10.34.227.131 systemd[1]: zookeeper.service start operation timed out. Terminating. Aug 24 18:11:00 10.34.227.131 systemd[1]: Failed to start LSB: distributed storage system for structured data. Aug 24 18:11:00 10.34.227.131 systemd[1]: Unit zookeeper.service entered failed state. Aug 24 18:11:00 10.34.227.131 systemd[1]: zookeeper.service failed.
這什麼有效
# ZooKeeper install path (where you extracted the tarball) ZOOKEEPER='/zookeeper/opt/zookeeper' ZOOUSER=root source /etc/rc.d/init.d/functions source $ZOOKEEPER/bin/zkEnv.sh RETVAL=0 PIDFILE="/var/run/zookeeper/zookeeper.pid" desc="ZooKeeper daemon" start() { echo -n $"Starting $desc (zookeeper): " daemon --user $ZOOUSER $ZOOKEEPER/bin/zkServer.sh start RETVAL=$? echo [ $RETVAL -eq 0 ] && touch /var/lock/subsys/zookeeper return $RETVAL } stop() { echo -n $"Stopping $desc (zookeeper): " daemon --user $ZOOUSER $ZOOKEEPER/bin/zkServer.sh stop RETVAL=$? sleep 5 echo [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/zookeeper $PIDFILE } restart() { stop start } get_pid() { cat "$PIDFILE" } checkstatus(){ status -p $PIDFILE ${JAVA_HOME}/bin/java RETVAL=$? } condrestart(){ [ -e /var/lock/subsys/zookeeper ] && restart || : } case "$1" in start) start ;; stop) stop ;; status) checkstatus ;; restart) restart ;; condrestart) condrestart ;; *) echo $"Usage: $0 {start|stop|status|restart|condrestart}" exit 1 esac exit $RETVAL