在?CentOS7 上安裝 zookeeper-3.4.9 服務

?1、創建 /usr/local/services/zookeeper 文件夾：
? ? mkdir -p /usr/local/services/zookeeper
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2、進入到 /usr/local/services/zookeeper 目錄中：
? ? cd /usr/local/services/zookeeper
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3、下載 zookeeper-3.4.9.tar.gz：
? ? wget?https://mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/zookeeper-3.4.9/zookeeper-3.4.9.tar.gz
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4、解壓縮 zookeeper-3.4.9.tar.gz：
? ? tar -zxvf zookeeper-3.4.9.tar.gz
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5、進入到 /usr/local/services/zookeeper/zookeeper-3.4.9/conf 目錄中：
? ? cd zookeeper-3.4.9/conf/
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6、復制 zoo_sample.cfg 文件的并命名為為 zoo.cfg：
? ? cp zoo_sample.cfg zoo.cfg
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7、用 vim 打開 zoo.cfg 文件并修改其內容為如下：
? ? # The number of milliseconds of each tick
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? ? # zookeeper 定義的基準時間間隔，單位：毫秒
? ? tickTime=2000
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? ? # 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=/tmp/zookeeper
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? ? # 數據文件夾
? ? dataDir=/usr/local/services/zookeeper/zookeeper-3.4.9/data
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? ? # 日志文件夾
? ? dataLogDir=/usr/local/services/zookeeper/zookeeper-3.4.9/logs
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? ? # the port at which the clients will connect
? ? # 客戶端訪問 zookeeper 的端口號
? ? clientPort=2181
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? ? # 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
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8、保存并關閉 zoo.cfg 文件:
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9、進入到 /usr/local/services/zookeeper/zookeeper-3.4.9/bin 目錄中：
? ? cd ../bin/
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10、用 vim 打開 /etc/ 目錄下的配置文件 profile：
? ? vim /etc/profile
? ? 并在其尾部追加如下內容：
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? ? # idea - zookeeper-3.4.9 config start - 2016-09-08
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? ? export ZOOKEEPER_HOME=/usr/local/services/zookeeper/zookeeper-3.4.9/
? ? export PATH=$ZOOKEEPER_HOME/bin:$PATH
? ? export PATH
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? ? # idea - zookeeper-3.4.9 config start - 2016-09-08
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11、使 /etc/ 目錄下的 profile 文件即可生效：
? ? source /etc/profile
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12、啟動 zookeeper 服務：
? ? zkServer.sh start
? ? 如打印如下信息則表明啟動成功：
? ? ZooKeeper JMX enabled by default
? ? Using config: /usr/local/services/zookeeper/zookeeper-3.4.9/bin/../conf/zoo.cfg
? ? Starting zookeeper ... STARTED
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13、查詢 zookeeper 狀態：
? ? zkServer.sh status
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14、關閉 zookeeper 服務：
? ? zkServer.sh stop
? ? 如打印如下信息則表明成功關閉：
? ? ZooKeeper JMX enabled by default
? ? Using config: /usr/local/services/zookeeper/zookeeper-3.4.9/bin/../conf/zoo.cfg
? ? Stopping zookeeper ... STOPPED
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15、重啟 zookeeper 服務：
? ? zkServer.sh restart
? ? 如打印如下信息則表明重啟成功：
? ? ZooKeeper JMX enabled by default
? ? Using config: /usr/local/services/zookeeper/zookeeper-3.4.9/bin/../conf/zoo.cfg
? ? ZooKeeper JMX enabled by default
? ? Using config: /usr/local/services/zookeeper/zookeeper-3.4.9/bin/../conf/zoo.cfg
? ? Stopping zookeeper ... STOPPED
? ? ZooKeeper JMX enabled by default
? ? Using config: /usr/local/services/zookeeper/zookeeper-3.4.9/bin/../conf/zoo.cfg
? ? Starting zookeeper ... STARTED