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                # memcached監控 [TOC] ## 一、memcached監控 ### 1. 原理知識 通過printf和nc命令,配合實現非交互式打印memcached的狀態,然后通過腳本進行監控,或者通過zabbix自定義可以進行監控 ```sh printf "stats\r\n"|nc 127.0.0.1 11211 ``` 1) 監控項 ①監聽port或進程 ②可以模擬用戶先set后get,比對get內容是不是set的。crond nagios zabbix ③監控命中百分比 ```sh printf 'stats\r\n'|nc 172.16.1.21 11211 |awk -vRS="\r\n" '/cmd_get/{get=$NF}/get_hits/{hits=$NF}END{print hits/get}' ``` ④監控響應時間及需要的狀態 2) 監控命令 ```sh stats 統計memcached的各種信息 stats settings 查看設置信息,如線程數 stats slabs 查看slabs相關情況,如chunksize長度 stats items 查看items相關情況 stats sizes 查看items的個數和大小 stats reset 清理統計數據 ``` 3) 狀態信息說明 見附錄 ### 2. 監控腳本 ```sh cat >/server/scripts/mem_ch.sh <<'EOF' #bin/bash MemIp=$1 MemPort=$2 NcCmd="nc $MemIp $MemPort" MD5=123 USAGE(){ echo "$0 MemIp MemPort" exit 3 } [ $# -ne2 ] && USAGE printf "set $md5 0 0 6\r\noldboy\r\n"|$NcCmd &>/dev/null if [ $? -eq o ];then if [ `printf "get $MD5\r\n"|$NcCmd|grep oldboy|wc -l` -eq 1 ];then echo "Memcached status is ok" printf "delete $MD5\r\n"|$NcCmd &>/dev/null exit 0 else echo "Memcached status is error1." exit 1 fi else echo "Could not connect MC server" exit 2 fi EOF ``` ## 二、 狀態信息說明表 略
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