Question

我们有一个正在死亡的邮件服务器，并且在退役之前将帐户迁移到新服务器。在25个以上的域中拥有800多个电子邮件帐户，这台计算机在迁移完成之前保持最新状态非常重要。

最近它已经开始填满错误日志，因为没有空间冻结mysql，停止邮件流，并且通常让我头疼。在找到并修复错误的根本问题之前，我已经提出了一个脚本来检查Dovecot和Amavis-new是否正在运行，如果没有重新启动它们。

阅读后： https://stackoverflow.com/a/7096003/4820993

除了一些其他常见的例子，我想出了这个。

netstat -an|grep -ce ':993.*LISTEN' >/dev/null 2>&1

if [ $? = 0 ]
then
    echo 'Dovecot is up';
else
    echo 'Dovecot is down, restarting...';
        /etc/init.d/dovecot restart
        logger -p mail.info dovecot_keepalive: Dovecot is down, restarting...
fi

/etc/init.d/amavis status |grep -ce 'running' >/dev/null 2>&1

if [ $? = 0 ]
then
    echo 'AmavisD is up';
else
    echo 'AmavisD is down, restarting...';
    /etc/init.d/amavis restart
    sleep 2
    /etc/init.d/amavis status |grep -ce 'running' >/dev/null 2>&1
        if [ $? = 1 ]
        then
            echo 'AmavisD had a problem restarting, trying to fix it now...';
            logger -p mail.info amavis_keepalive: AmavisD had a problem restarting...
            output=$(ps aux|grep a\[m\]avisd)
            set -- $output
            pid=$2
            kill $pid
            rm /var/run/amavis/amavisd.pid
            /etc/init.d/amavis start
        else
            echo 'AmavisD restarted successfully';
            logger -p mail.info amavis_keepalive: AmavisD is down, restarting...
        fi
fi

谁知道，我可能会让它变得更难，如果是这样，请让我知道!!!

我针对http://www.shellcheck.net进行了检查，并根据其调试报告进行了更新/更正。我正在从其他地方的例子拼凑这个，并希望有人在我实现之前校对这一点。

检查dovecot的第一部分已经作为cronjob每6个小时工作正常（是的，服务器搞砸了，我们需要检查它），这是关于amavis我不确定的部分。

Answer 1

您可以使用Monit来监控您的服务并重新启动。

的amavisd：

# File: /etc/monit.d/amavisd
# amavis
check process amavisd with pidfile /var/amavis/amavisd.pid
   group services
   start program = "/etc/init.d/amavisd start"
   stop  program = "/etc/init.d/amavisd stop"
   if failed port 10024 then restart
   if 5 restarts within 5 cycles then timeout

达夫科特：

# File: /etc/monit.d/dovecot
check process dovecot with pidfile /var/run/dovecot/master.pid
   start program = "/etc/init.d/dovecot start"
   stop program = "/etc/init.d/dovecot stop"
   group mail
   if failed host localhost port 993 type tcpssl sslauto protocol imap then restart
   if failed host localhost port 143 protocol imap  then restart
   if 5 restarts within 5 cycles then timeout
   depends dovecot_init
   depends dovecot_bin
check file dovecot_init with path /etc/init.d/dovecot
   group mail
check file dovecot_bin with path /usr/sbin/dovecot
   group mail

Dovecot / Amavis重启脚本（正在进行中）

1 个答案: