[Dubbo日記]（1）Zookeeper安裝

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1. 下載下傳位址

http://www.apache.org/dyn/closer.cgi/zookeeper/

2. 解壓

tar zxvf  zookeeper-3.4.8.tar.gz

3. 重命名

在對應的zookeeper-3.4.8/conf 下有一個檔案zoo_sample.cfg的這個檔案裡面配置了監聽用戶端連接配接的端口等一些資訊，Zookeeper 在啟動時會找zoo.cfg這個檔案作為預設配置檔案，是以我們重命名zoo_sample.cfg為zoo.cfg。使用如下指令：

1. mv zoo_sample.cfg zoo.cfg

4. 配置檔案 zoo.cfg

1. # The number of milliseconds of each tick

2. tickTime=2000

3. # The number of ticks that the initial

4. # synchronization phase can take

5. initLimit=10

6. # The number of ticks that can pass between

7. # sending a request and getting an acknowledgement

8. syncLimit=5

9. # the directory where the snapshot is stored.

10. # do not use /tmp for storage, /tmp here is just

11. # example sakes.

12. dataDir=/home/xiaosi/zookeeper/data

13. # the port at which the clients will connect

14. clientPort=2181

15. # the maximum number of client connections.

16. # increase this if you need to handle more clients

17. #maxClientCnxns=60

18. #

19. # Be sure to read the maintenance section of the

20. # administrator guide before turning on autopurge.

21. #

22. # http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance

隻需修改dataDir項即可，不要使用預設的/tmp目錄；

如果需要叢集，zoo.cfg的内容如下：(其中data目錄和server位址需改成你真實部署機器的資訊)：

1. tickTime=2000

2. initLimit=10

3. syncLimit=5

4. dataDir=/home/xiaosi/zookeeper/data

5. clientPort=2181

6. server.1=10.20.153.10:2555:3555

7. server.2=10.20.153.11:2555:3555

并在data目錄下放置myid檔案：(上面zoo.cfg中的dataDir)

1. sudo mkdir data

2. sudo vim myid

myid指明自己的id，對應上面zoo.cfg中server.後的數字，第一台的内容為1，第二台的内容為2，myid内容如下：

1. 1

5. 啟動

進入bin目錄 ./zkServer.sh start

1. xiaosi@Qunar:/opt/zookeeper-3.4.8/bin$ ./zkServer.sh start

2. ZooKeeper JMX enabled by default

3. Using config: /opt/zookeeper-3.4.8/bin/../conf/zoo.cfg

4. Starting zookeeper ... STARTED

檢視zookeeper狀态：

1. xiaosi@Qunar:/opt/zookeeper-3.4.8/bin$ ./zkServer.sh status

2. ZooKeeper JMX enabled by default

3. Using config: /opt/zookeeper-3.4.8/bin/../conf/zoo.cfg

4. Mode: standalone

當zookeeper啟動時，會在/home/xiaosi/zookeeper/data下生成一個zookeeper_server.pid檔案。記錄了zookeeper程序的程序ID号（本例中為13402）。

1. xiaosi   13402  6831  0 00:06 pts/20   00:00:00 /opt/jdk1.7.0_40/bin/java -Dzookeeper.log.dir=. -Dzookeeper.root.logger=INFO,CONSOLE -cp /opt/zookeeper-3.4.8/bin/../build/classes:/opt/zookeeper-3.4.8/bin/../build/lib/*.jar:/opt/zookeeper-3.4.8/bin/../lib/slf4j-log4j12-1.6.1.jar:/opt/zookeeper-3.4.8/bin/../lib/slf4j-api-1.6.1.jar:/opt/zookeeper-3.4.8/bin/../lib/netty-3.7.0.Final.jar:/opt/zookeeper-3.4.8/bin/../lib/log4j-1.2.16.jar:/opt/zookeeper-3.4.8/bin/../lib/jline-0.9.94.jar:/opt/zookeeper-3.4.8/bin/../zookeeper-3.4.8.jar:/opt/zookeeper-3.4.8/bin/../src/java/lib/*.jar:/opt/zookeeper-3.4.8/bin/../conf:.:/opt/jdk1.7.0_40/lib -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.local.only=false org.apache.zookeeper.server.quorum.QuorumPeerMain /opt/zookeeper-3.4.8/bin/../conf/zoo.cfg

2. xiaosi   13497 12559  0 00:07 pts/20   00:00:00 grep --color=auto zookeeper

6. 關閉

進入bin目錄 ./zkServer.sh stop

1. xiaosi@Qunar:/opt/zookeeper-3.4.8/bin$ ./zkServer.sh stop

2. ZooKeeper JMX enabled by default

3. Using config: /opt/zookeeper-3.4.8/bin/../conf/zoo.cfg

4. Stopping zookeeper ... STOPPED