Jenkins真正地完整迁移流程（亲测有效）

Bertha 。 2023-10-05 17:09 46阅读 0赞

## 拷贝两个目录、一个文件 ##

#将正常节点如下目录及文件完整拷贝到新节点
    [root@master1 ~]# scp -r /etc/sysconfig/jenkins/ 192.168.145.29:/etc/sysconfig/jenkins
    
    [root@master1 ~]# scp -r /usr/lib/jenkins/ 192.168.145.29:/usr/lib/jenkins
    
    [root@master1 ~]# scp -r /var/lib/jenkins/ 192.168.145.29:/var/lib/jenkins

## 启动脚本 ##

[root@jenkins-n1 ~]# cat /etc/rc.d/init.d/jenkins
    #!/bin/sh
    #
    #     RedHat system statup script for Jenkins
    #     Based on SUSE system statup script for Jenkins
    #     Copyright (C) 2007  Pascal Bleser
    #
    #     This library is free software; you can redistribute it and/or modify it
    #     under the terms of the GNU Lesser General Public License as published by
    #     the Free Software Foundation; either version 2.1 of the License, or (at
    #     your option) any later version.
    #
    #     This library is distributed in the hope that it will be useful, but
    #     WITHOUT ANY WARRANTY; without even the implied warranty of
    #     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    #     Lesser General Public License for more details.
    #
    #     You should have received a copy of the GNU Lesser General Public
    #     License along with this library; if not, write to the Free Software
    #     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307,
    #     USA.
    #
    ###############################################################################
    #
    # chkconfig: 35 99 01
    # description: Jenkins Automation Server
    #
    ###############################################################################
    ### BEGIN INIT INFO
    # Provides:          jenkins
    # Required-Start:    $local_fs $remote_fs $network $time $named
    # Should-Start: $time sendmail
    # Required-Stop:     $local_fs $remote_fs $network $time $named
    # Should-Stop: $time sendmail
    # Default-Start:     3 5
    # Default-Stop:      0 1 2 6
    # Short-Description: Jenkins Automation Server
    # Description:       Jenkins Automation Server
    ### END INIT INFO
    
    # Check for missing binaries (stale symlinks should not happen)
    JENKINS_WAR="/usr/lib/jenkins/jenkins.war"
    test -r "$JENKINS_WAR" || {
         echo "$JENKINS_WAR not installed";
    	if [ "$1" = "stop" ]; then exit 0;
    	else exit 5; fi; }
    
    # Check for existence of needed config file and read it
    JENKINS_CONFIG=/etc/sysconfig/jenkins
    test -e "$JENKINS_CONFIG" || {
         echo "$JENKINS_CONFIG not existing";
    	if [ "$1" = "stop" ]; then exit 0;
    	else exit 6; fi; }
    test -r "$JENKINS_CONFIG" || {
         echo "$JENKINS_CONFIG not readable. Perhaps you forgot 'sudo'?";
    	if [ "$1" = "stop" ]; then exit 0;
    	else exit 6; fi; }
    
    JENKINS_PID_FILE="/var/run/jenkins.pid"
    JENKINS_LOCKFILE="/var/lock/subsys/jenkins"
    
    # Source function library.
    . /etc/init.d/functions
    
    # Read config
    [ -f "$JENKINS_CONFIG" ] && . "$JENKINS_CONFIG"
    
    # Set up environment accordingly to the configuration settings
    [ -n "$JENKINS_HOME" ] || {
         echo "JENKINS_HOME not configured in $JENKINS_CONFIG";
    	if [ "$1" = "stop" ]; then exit 0;
    	else exit 6; fi; }
    [ -d "$JENKINS_HOME" ] || {
         echo "JENKINS_HOME directory does not exist: $JENKINS_HOME";
    	if [ "$1" = "stop" ]; then exit 0;
    	else exit 1; fi; }
    
    # Search usable Java as /usr/bin/java might not point to minimal version required by Jenkins.
    # see http://www.nabble.com/guinea-pigs-wanted-----Hudson-RPM-for-RedHat-Linux-td25673707.html
    candidates="
    /etc/alternatives/java
    /usr/lib/jvm/java-1.8.0/bin/java
    /usr/lib/jvm/jre-1.8.0/bin/java
    /usr/lib/jvm/java-11.0/bin/java
    /usr/lib/jvm/jre-11.0/bin/java
    /usr/lib/jvm/java-11-openjdk-amd64
    /usr/bin/java
    "
    for candidate in $candidates
    do
      [ -x "$JENKINS_JAVA_CMD" ] && break
      JENKINS_JAVA_CMD="$candidate"
    done
    
    JAVA_CMD="$JENKINS_JAVA_CMD $JENKINS_JAVA_OPTIONS -DJENKINS_HOME=$JENKINS_HOME -jar $JENKINS_WAR"
    PARAMS="--logfile=/var/log/jenkins/jenkins.log --webroot=/var/cache/jenkins/war --daemon"
    [ -n "$JENKINS_PORT" ] && PARAMS="$PARAMS --httpPort=$JENKINS_PORT"
    [ -n "$JENKINS_LISTEN_ADDRESS" ] && PARAMS="$PARAMS --httpListenAddress=$JENKINS_LISTEN_ADDRESS"
    [ -n "$JENKINS_HTTPS_PORT" ] && PARAMS="$PARAMS --httpsPort=$JENKINS_HTTPS_PORT"
    [ -n "$JENKINS_HTTPS_KEYSTORE" ] && PARAMS="$PARAMS --httpsKeyStore=$JENKINS_HTTPS_KEYSTORE"
    [ -n "$JENKINS_HTTPS_KEYSTORE_PASSWORD" ] && PARAMS="$PARAMS --httpsKeyStorePassword='$JENKINS_HTTPS_KEYSTORE_PASSWORD'"
    [ -n "$JENKINS_HTTPS_LISTEN_ADDRESS" ] && PARAMS="$PARAMS --httpsListenAddress=$JENKINS_HTTPS_LISTEN_ADDRESS"
    [ -n "$JENKINS_HTTP2_PORT" ] && PARAMS="$PARAMS --http2Port=$JENKINS_HTTP2_PORT"
    [ -n "$JENKINS_HTTP2_LISTEN_ADDRESS" ] && PARAMS="$PARAMS --http2ListenAddress=$JENKINS_HTTP2_LISTEN_ADDRESS"
    [ -n "$JENKINS_DEBUG_LEVEL" ] && PARAMS="$PARAMS --debug=$JENKINS_DEBUG_LEVEL"
    [ -n "$JENKINS_HANDLER_STARTUP" ] && PARAMS="$PARAMS --handlerCountStartup=$JENKINS_HANDLER_STARTUP"
    [ -n "$JENKINS_HANDLER_MAX" ] && PARAMS="$PARAMS --handlerCountMax=$JENKINS_HANDLER_MAX"
    [ -n "$JENKINS_HANDLER_IDLE" ] && PARAMS="$PARAMS --handlerCountMaxIdle=$JENKINS_HANDLER_IDLE"
    [ -n "$JENKINS_EXTRA_LIB_FOLDER" ] && PARAMS="$PARAMS --extraLibFolder=$JENKINS_EXTRA_LIB_FOLDER"
    [ -n "$JENKINS_ARGS" ] && PARAMS="$PARAMS $JENKINS_ARGS"
    
    if [ "$JENKINS_ENABLE_ACCESS_LOG" = "yes" ]; then
        PARAMS="$PARAMS --accessLoggerClassName=winstone.accesslog.SimpleAccessLogger --simpleAccessLogger.format=combined --simpleAccessLogger.file=/var/log/jenkins/access_log"
    fi
    
    RETVAL=0
    
    case "$1" in
        start)
    	echo -n "Starting Jenkins "
    	daemon --user "$JENKINS_USER" --pidfile "$JENKINS_PID_FILE" "$JAVA_CMD" $PARAMS > /dev/null
    	RETVAL=$?
    	if [ $RETVAL = 0 ]; then
    	    success
    	    echo > "$JENKINS_PID_FILE"  # just in case we fail to find it
                MY_SESSION_ID=`/bin/ps h -o sess -p $$`
                # get PID
                /bin/ps hww -u "$JENKINS_USER" -o sess,ppid,pid,cmd | \
                while read sess ppid pid cmd; do
    		[ "$ppid" = 1 ] || continue
    		# this test doesn't work because Jenkins sets a new Session ID
                    # [ "$sess" = "$MY_SESSION_ID" ] || continue
    	       	echo "$cmd" | grep $JENKINS_WAR > /dev/null
    		[ $? = 0 ] || continue
    		# found a PID
    		echo $pid > "$JENKINS_PID_FILE"
    	    done
    	    touch $JENKINS_LOCKFILE
    	else
    	    failure
    	fi
    	echo
    	;;
        stop)
    	echo -n "Shutting down Jenkins "
    	killproc jenkins
    	rm -f $JENKINS_LOCKFILE
    	RETVAL=$?
    	echo
    	;;
        try-restart|condrestart)
    	if test "$1" = "condrestart"; then
    		echo "${attn} Use try-restart ${done}(LSB)${attn} rather than condrestart ${warn}(RH)${norm}"
    	fi
    	$0 status
    	if test $? = 0; then
    		$0 restart
    	else
    		: # Not running is not a failure.
    	fi
    	;;
        restart)
    	$0 stop
    	$0 start
    	;;
        force-reload)
    	echo -n "Reload service Jenkins "
    	$0 try-restart
    	;;
        reload)
        	$0 restart
    	;;
        status)
        	status jenkins
    	RETVAL=$?
    	;;
        probe)
    	## Optional: Probe for the necessity of a reload, print out the
    	## argument to this init script which is required for a reload.
    	## Note: probe is not (yet) part of LSB (as of 1.9)
    
    	test "$JENKINS_CONFIG" -nt "$JENKINS_PID_FILE" && echo reload
    	;;
        *)
    	echo "Usage: $0 {start|stop|status|try-restart|restart|force-reload|reload|probe}"
    	exit 1
    	;;
    esac
    exit $RETVAL
    [root@jenkins-n1 ~]#

## 执行启动 ##

账号密码等信息都跟原来节点一模一样。

systemctl start jenkins

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