Zookeeper單機(jī)以及集群搭建教程

單機(jī)搭建

單機(jī)安裝以及啟動(dòng)

安裝zookeeper的前提是必須有java環(huán)境

# 選擇目錄進(jìn)行下載安裝 cd /app # 下載zk，可以去官方網(wǎng)站下載，自己上傳 wget https://archive.apache.org/dist/zookeeper/zookeeper-3.4.11/zookeeper-3.4.11.tar.gz # 解壓zk tar -zxvf zookeeper-3.4.11.tar.gz # 設(shè)定軟連接 ln -s zookeeper-3.4.11 zookeeper # 添加兩個(gè)目錄，一個(gè)是數(shù)據(jù)目錄，一個(gè)是日志目錄 cd zookeeper/ mkdir data mkdir log # 添加配置文件zoo.cfg在zookeeper的config目錄下面見(jiàn)【2】使用：wq! 進(jìn)行保存 cd conf cp zoo_sample.cfg zoo.cfg # 修改 dataDir=/app/zookeeper/data dataLogDir=/app/zookeeper/log 目錄 vi zoo.cfg # 進(jìn)入bin目錄進(jìn)行啟動(dòng) cd ../bin ./zkServer.sh start # 顯示如下：Starting zookeeper ... STARTED即為成功

單機(jī)配置zoo.cfg的配置的內(nèi)容，只需要修改dataDir、dataLogDir

# The number of milliseconds of each tick 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 an acknowledgement syncLimit=5 # the directory where the snapshot is stored. # do not use /tmp for storage, /tmp here is just # example sakes. dataDir=/app/zookeeper/data dataLogDir=/app/zookeeper/log # the port at which the clients will connect clientPort=2181 # the maximum number of client connections. # increase this if you need to handle more clients #maxClientCnxns=60 # # Be sure to read the maintenance section of the # administrator guide before turning on autopurge. # # http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance # # The number of snapshots to retain in dataDir #autopurge.snapRetainCount=3 # Purge task interval in hours # Set to "0" to disable auto purge feature #autopurge.purgeInterval=1

單機(jī)常用命令

# 進(jìn)入zookeeper目錄使用命令,連接成功則說(shuō)明通過(guò) ./zkCli.sh # 啟動(dòng)zk服務(wù) ./zkServer.sh start # 查看zk服務(wù)狀態(tài) ./zkServer.sh status # 停止zk服務(wù) ./zkServer.sh stop # 重啟zk服務(wù) ./zkServer.sh restart

集群搭建

虛擬機(jī)配置

虛擬機(jī)1虛擬機(jī)2虛擬機(jī)3

172.16.48.129	172.16.48.130	172.16.48.131
myid:1	myid:2	myid:3

myid配置

# 在每個(gè)虛擬機(jī)的dataDir=/app/zookeeper/data目錄下面創(chuàng)建myid文件 cd /app/zookeeper/data # 創(chuàng)建myid文件，內(nèi)容依照表格1，2，3.使用:wq進(jìn)保存 vim myid

zoo.cfg配置添加

# 其他配置同單機(jī)配置 # 在zoo.cfg下面添加如下的集群配置server.myid # 對(duì)應(yīng)其他實(shí)例的內(nèi)網(wǎng)ip地址 server.1=172.16.48.129:2888:3888 server.2=172.16.48.130:2888:3888 server.3=172.16.48.131:2888:3888

在三臺(tái)虛擬機(jī)的終端同時(shí)啟動(dòng)三個(gè)zookeeper實(shí)例，zk1 -》 zk2 -》 zk3

cd /app/zookeeper/bin ./zkServer.sh start ./zkServer.sh status # 分別在狀態(tài)中顯示了leader還是follower 虛擬機(jī)1虛擬機(jī)2虛擬機(jī)3

172.16.48.129	172.16.48.130	172.16.48.131
follower	follower	leader

高可用測(cè)試

按照道理zookeeper高可用3臺(tái)的情況下只要兩臺(tái)掛了，集群就無(wú)法提供服務(wù)了。

一臺(tái)掛了的情況: 關(guān)閉虛擬機(jī)3的zookeeper，調(diào)用status命令

虛擬機(jī)1虛擬機(jī)2虛擬機(jī)3

172.16.48.129	172.16.48.130	172.16.48.131
follower	leader	Error contacting service. It is probably not running.

虛擬機(jī)2轉(zhuǎn)為了leader，虛擬機(jī)1和2一起提供服務(wù)

兩臺(tái)掛了的情況: 關(guān)閉虛擬機(jī)2的zookeeper，調(diào)用status命令

虛擬機(jī)1虛擬機(jī)2虛擬機(jī)3

172.16.48.129	172.16.48.130	172.16.48.131
Error contacting service. It is probably not running.	Error contacting service. It is probably not running.	Error contacting service. It is probably not running.

重新啟動(dòng)一臺(tái)后，虛擬機(jī)1和虛擬機(jī)2能夠提供服務(wù)

轉(zhuǎn)載于:https://www.cnblogs.com/fly-piglet/p/9837206.html

總結(jié)

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