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                [TOC] ###實現功能 針對Nginx+Keepalived,編寫nginx的運行監控腳本nginx_pid.sh,放置在后臺一直監控nginx的進程;如果進程消失,嘗試重啟nginx,若重啟失敗,立即停掉本機的keepalived服務,讓另一臺負載均衡服務器接手。 ###腳本 #!/bin/bash while: do nginxpid=`ps -C nginx --no-header | wc -l` if [ $nginxpid -eq 0 ];then ulimit -SHn 65535 #防止因并發數量過大,導致linux報錯 service nginx restart #啟動方式根據實際情況而定 sleep 5 nginxpid=`ps -C nginx --no-header | wc -l` if [ $nginxpid -eq 0 ];then service keepalived stop #停止keepalived按照實際情況而定 fi fi sleep 5 done ###腳本啟動 啟動的時候使用nohup /bin/bash 腳本全路徑 & (在linux中建議養成使用全路徑的習慣) 例如 nohup /bin/bash /app/shell/nginx_pid.sh & 如果不使用nohup以及&關閉終端的時候,腳本會自動的關閉。
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