HAProxy脚本启动和关闭

CentOS下实现脚本启动和关闭

1. 编写启动脚本

1
vi /etc/rc.d/init.d/haproxy

本身不存在此文件,使用以上命令,进入vi编辑器,再使用命令保存退出即可新建此文件。
打开文件haproxy,贴入如下内容:

#!/bin/sh
#chkconfig: 2345 10 90
#description:haproxy
#
# chkconfig: - 85 15
# description: HA-Proxy is a TCP/HTTP reverse proxy which is particularly suited \
#              for high availability environments.
# processname: haproxy
# config: /etc/haproxy/haproxy.cfg
# pidfile: /var/run/haproxy.pid

# Script Author: Simon Matter <simon.matter@invoca.ch>
# Version: 2004060600

# Source function library.
if [ -f /etc/init.d/functions ]; then
  . /etc/init.d/functions
elif [ -f /etc/rc.d/init.d/functions ] ; then
  . /etc/rc.d/init.d/functions
else
  exit 0
fi

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ ${NETWORKING} = "no" ] && exit 0

# This is our service name
BASENAME=`basename $0`
if [ -L $0 ]; then
  BASENAME=`find $0 -name $BASENAME -printf %l`
  BASENAME=`basename $BASENAME`
fi

BIN=/usr/local/haproxy/sbin/haproxy

CFG=/usr/local/haproxy/haproxy.cfg
[ -f $CFG ] || exit 1

PIDFILE=/var/run/$BASENAME.pid
LOCKFILE=/var/lock/subsys/$BASENAME

RETVAL=0

start() {
  quiet_check
  if [ $? -ne 0 ]; then
    echo "Errors found in configuration file, check it with '$BASENAME check'."
    return 1
  fi

  echo -n "Starting $BASENAME: "
  daemon $BIN -D -f $CFG -p $PIDFILE
  RETVAL=$?
  echo
  [ $RETVAL -eq 0 ] && touch $LOCKFILE
  return $RETVAL
}

stop() {
  echo -n "Shutting down $BASENAME: "
  killproc $BASENAME -USR1
  RETVAL=$?
  echo
  [ $RETVAL -eq 0 ] && rm -f $LOCKFILE
  [ $RETVAL -eq 0 ] && rm -f $PIDFILE
  return $RETVAL
}

restart() {
  quiet_check
  if [ $? -ne 0 ]; then
    echo "Errors found in configuration file, check it with '$BASENAME check'."
    return 1
  fi
  stop
  start
}

reload() {
  if ! [ -s $PIDFILE ]; then
    return 0
  fi

  quiet_check
  if [ $? -ne 0 ]; then
    echo "Errors found in configuration file, check it with '$BASENAME check'."
    return 1
  fi
  $BIN -D -f $CFG -p $PIDFILE -sf $(cat $PIDFILE)
}

check() {
  $BIN -c -q -V -f $CFG
}

quiet_check() {
  $BIN -c -q -f $CFG
}

rhstatus() {
  status $BASENAME
}

condrestart() {
  [ -e $LOCKFILE ] && restart || :
}

# See how we were called.
case "$1" in
  start)
    start
    ;;
  stop)
    stop
    ;;
  restart)
    restart
    ;;
  reload)
    reload
    ;;
  condrestart)
    condrestart
    ;;
  status)
    rhstatus
    ;;
  check)
    check
    ;;
  *)
    echo $"Usage: $BASENAME {start|stop|restart|reload|condrestart|status|check}"
    exit 1
esac
 
exit $?

如果安装路径有变动,则只需修改上面的BIN=/usr/local/haproxy/sbin/haproxyCFG=/usr/local/haproxy/haproxy.cfg即可。

2. 脚本随系统自启动

1
2
3
chmod 755 /etc/rc.d/init.d/haproxy  # 添加执行属性
chkconfig --add haproxy # 添加服务
chkconfig haproxy on

如果出现结果: service haproxy does not support chkconfig
解决办法是在 /etc/rc.d/init.d/haproxy 中添加下面两句到 #!/bin/bash 之后:
#chkconfig: 2345 10 90
#description:haproxy
—-其中2345是默认启动级别,级别有0-6共7个级别。
—-等级0表示:表示关机
—-等级1表示:单用户模式
—-等级2表示:无网络连接的多用户命令行模式
—-等级3表示:有网络连接的多用户命令行模式
—-等级4表示:不可用
—-等级5表示:带图形界面的多用户模式
—-等级6表示:重新启动
—-10是启动优先级,90是停机优先级,优先级范围是0-100,数字越大,优先级越低。

添加后效果如下:
[root@Linux-xx ~]# cat /etc/rc.d/init.d/haproxy
#!/bin/bash
#chkconfig: 2345 10 90
#description:haproxy
BASE_DIR=”/usr/local/haproxy”
ARGV=”$@”
start()

3. 启动与关闭

1
2
service haproxy start
service haproxy stop

Suse Linux Enterprise 12下实现脚本启动和关闭

1. 在~目录下,执行下面命令

1
vim .profile

2. 在.profile文件中定义HAPROXY_HOME变量,并将变量追加到PATH后面,效果如下:

    # .profile

    # Get the aliases and functions
    if [ -f ~/.bashrc ]; then
            . ~/.bashrc
    fi

    # User specific environment and startup programs

    HAPROXY_HOME=/usr/local/haproxy
    PATH=$PATH:$HOME/bin:$HAPROXY_HOME

    export HAPROXY_HOME
    export PATH

保存并退出。

3. 执行下面命令,使立即生效

1
source ~/.profile

4. 执行下面命令,在HAPROXY_HOME目录下创建脚本文件,

1
vim /usr/local/haproxy/haproxy

在文件中写入如下代码,保存并退出。

#!/bin/bash
# /usr/local/haproxy
# YPN 2018-02-01 Create

if [ "$1"x = "start"x ]; then
  /usr/local/haproxy/sbin/haproxy -f /usr/local/haproxy/haproxy.cfg
fi
if [ "$1"x = "stop"x ]; then
  killall haproxy
fi
if [ "$1"x = "check"x ]; then
  ps -e|grep haproxy
fi
if [ "$1"x = "log"x ]; then
  tail -f /usr/local/haproxy/logs/haproxy.pid -n 1000
fi

5. 给文件添加权限,使脚本文件可以执行,命令为

1
chmod 755 /usr/local/haproxy/haproxy

6. 最后,执行下面命令可启动、关闭haproxy或查看日志

启动:

1
haproxy start

关闭:

1
haproxy stop

查看日志:

1
haproxy log

检查haprxy进程:

1
haproxy check

7. 随系统自启动

1
vim /etc/init.d/boot.local

加入以下内容,保存退出后生效。

/usr/local/haproxy/sbin/haproxy -f /usr/local/haproxy/haproxy.cfg