Zookeeper增刪改查
阿新 • • 發佈:2018-04-17
錯誤 store reat 如果 session led initial port syn
1.下載Zookeeper http://mirrors.shu.edu.cn/apache/zookeeper/
這裏我選擇Zookeeper 3.4.11版本 ZooKeeper 支持某些特定的四字命令字母與其的交互。它們大多是查詢命令,用來獲取 ZooKeeper 服務的當前狀態及相關信息。用戶在可以通過 telnet 或 nc 向 ZooKeeper 提交相應的命令。 ZooKeeper 常用四字命令見下表 1 所示: 表 1 : ZooKeeper 四字命令
2. 配置環境
首先 把下載好的Zookeeper包 解壓以後復制 全部內容 到 D:/zookeeper目錄 下,然後進入目錄D:/zookeeper/conf/ 新建一個名為zoo.cfg的文件
復制以下代碼,保存退出。
# The number of milliseconds of each tick 心跳間隔 毫秒每次 tickTime=2000 # The number of ticks that the initial # synchronization phase can take initLimit=10 # The number of ticks that can pass between # sending a request and getting anacknowledgement syncLimit=5 # the directory where the snapshot isstored.//鏡像數據位置 dataDir=D:\\data\\zookeeper #日誌位置 dataLogDir=D:\\logs\\zookeeper # the port at which the clients willconnect 客戶端連接的端口 clientPort=2181 註:如果啟動有報錯提示cfg文件有錯誤,可以用zoo_sample.cfg內內容替代也是可以的
3. 啟動 Zookeeper 服務端 (註 : .sh 和 .cmd 文件 分別用在 Unix 和 Windows 平臺)
啟動cmd,切換到 D://zookeeper/bin/ 輸入 zkServer.cmd
C:\Users\Administrator.PC-20170306CZRV>D: D:\>cd zookeeper\bin D:\zookeeper\bin>zkServer.cmd
4. 新打開一個命令窗口 ,啟動客戶端
C:\Users\Administrator.PC-20170306CZRV>D: D:\>cd zookeeper\bin D:\zookeeper\bin>zkCli.cmd -server 127.0.0.1:2181
連接成功以後會出現 下面這段消息
[zk: 127.0.0.1:2181(CONNECTING) 0] 2018-04-17 14:43:02,544 [myid:] - INFO [main-SendThread(127.0.0.1:2181):ClientCnxn$SendThread@1302] - Session establishment complete on server 127.0.0.1/127.0.0.1:2181, sessionid = 0x10000300da50000, negotiated timeout = 30000 WATCHER:: WatchedEvent state:SyncConnected type:None path:null
5. 進行節點操作(增刪改查 create delete set get )
[zk: 127.0.0.1:2181(CONNECTED) 3] ls / [zookeeper] [zk: 127.0.0.1:2181(CONNECTED) 4] create /zk-user yzr Created /zk-user [zk: 127.0.0.1:2181(CONNECTED) 6] ls / [zk-user, zookeeper] [zk: 127.0.0.1:2181(CONNECTED) 7] get /zk-user yzr cZxid = 0x2 ctime = Tue Apr 17 14:46:23 CST 2018 mZxid = 0x2 mtime = Tue Apr 17 14:46:23 CST 2018 pZxid = 0x2 cversion = 0 dataVersion = 0 aclVersion = 0 ephemeralOwner = 0x0 dataLength = 3 numChildren = 0 [zk: 127.0.0.1:2181(CONNECTED) 8] set /zk-user lyf
[zk: 127.0.0.1:2181(CONNECTED) 9] delete /zk-user
Zookeeper增刪改查