Dovecot/Amavis重啓腳本（工作正在進行）

Question

我們有一個郵件服務器正在死亡，並且正在將帳戶在退役之前遷移到新服務器。通過超過25個域名的超過800個電子郵件帳戶，重要的是這臺機器保持運行直到遷移完成。

最近它已經開始填滿錯誤日誌，它會因爲沒有空間而凍結mysql，停止郵件流，並且通常會讓我頭疼。在找到並解決錯誤的根本問題之前，我已經想出了一個腳本來檢查Dovecot和Amavis-new是否正在運行，並且是否重新啓動它們。

閱讀後： https://stackoverflow.com/a/7096003/4820993

除了其他一些常見的例子，我想出了這個。

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 

誰知道，我可能讓它更難，如果是的話請讓我知道！

我對照http://www.shellcheck.net進行了檢查，並根據其調試報告進行了更新/更正。我正在從其他地方的例子中拼湊出來，並希望有人在我實施它之前對其進行校對。

第一部分檢查dovecot已經工作得很好，每6小時一次cronjob（是的服務器是搞砸了，我們需要檢查它），這是關於amavis我不確定的部分。

Answer 1

您可以使用Monit來監視您的服務並重新啓動。

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 

達夫科特：

# 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