error while loading shared libraries: libevent-2.1.so.6 的解決辦法
阿新 • • 發佈：2018-12-30
執行 memcached 啟動命令時，報錯，提示：error while loading shared libraries: libevent-2.1.so.6: cannot open shared object file: No such file or directory
檢視 memcached 命令缺失什麼庫
ldd /usr/local/memcached/bin/memcached
ldd /usr/local/memcached/bin/memcached
結果： libevent-2.1.so.6 模組找不到
檢視 libevent-2.1.so.6 是否存在
locate libevent-2.1.so.6
locate libevent-2.1.so.6
結果： 系統已經安裝了該模組，在路徑 /usr/local/lib/
檢視 memcached 查詢依賴庫的路徑
LD_DEBUG=libs /usr/local/memcached/bin/memcached -v
LD_DEBUG=libs /usr/local/memcached/bin/memcached -v
結果： 在 /lib64/ 目錄中查詢，所以找不到已經安裝好的
對映 libevent-2.1.so.6 到 /lib64 路徑中
ln -s /usr/local/lib/libevent-2.1.so.6 /usr/lib64/libevent-2.1.so.6
ln -s /usr/local/lib/libevent-2.1.so.6 /usr/lib64/libevent-2.1.so.6
結果：這樣處理後，memcached就可以搜尋到該檔案了
啟動memcached服務
/etc/init.d/memcached restart
/etc/init.d/memcached restart
此處會略有不同，因為提前已經安裝了memcache開機啟動指令碼