Подключение к ZooKeeper через CLI
Простейшим способом начать работать с ZooKeeper является использование командной строки (Command Line Interface, CLI). Консоль ZooKeeper CLI доступна на каждом сервере кластера ZooKeeper сразу после его установки. Откройте консоль с помощью скрипта zkCli.sh, расположенного в каталоге /bin:
$ sudo /usr/lib/zookeeper/bin/zkCli.sh
Вывод на экран
2021-12-15 11:04:55,901 [myid:] - INFO [main:Environment@100] - Client environment:zookeeper.version=3.4.14-f42ef4b166f1e5c63117c75aed651589a0cce1b2, built on 08/06/2019 14:49 GMT 2021-12-15 11:04:55,903 [myid:] - INFO [main:Environment@100] - Client environment:host.name=bds-adh-1.ru-central1.internal 2021-12-15 11:04:55,904 [myid:] - INFO [main:Environment@100] - Client environment:java.version=1.8.0_312 2021-12-15 11:04:55,905 [myid:] - INFO [main:Environment@100] - Client environment:java.vendor=Red Hat, Inc. 2021-12-15 11:04:55,906 [myid:] - INFO [main:Environment@100] - Client environment:java.home=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-1.el7_9.x86_64/jre 2021-12-15 11:04:55,906 [myid:] - INFO [main:Environment@100] - Client environment:java.class.path=/usr/lib/zookeeper/bin/../zookeeper-server/target/classes:/usr/lib/zookeeper/bin/../build/classes:/usr/lib/zookeeper/bin/../zookeeper-server/target/lib/*.jar:/usr/lib/zookeeper/bin/../build/lib/*.jar:/usr/lib/zookeeper/bin/../lib/slf4j-log4j12-1.7.25.jar:/usr/lib/zookeeper/bin/../lib/slf4j-api-1.7.25.jar:/usr/lib/zookeeper/bin/../lib/netty-3.10.6.Final.jar:/usr/lib/zookeeper/bin/../lib/log4j-1.2.17.jar:/usr/lib/zookeeper/bin/../lib/jline-0.9.94.jar:/usr/lib/zookeeper/bin/../lib/audience-annotations-0.5.0.jar:/usr/lib/zookeeper/bin/../zookeeper-3.4.14.jar:/usr/lib/zookeeper/bin/../zookeeper-server/src/main/resources/lib/*.jar:/usr/lib/zookeeper/bin/../conf: 2021-12-15 11:04:55,906 [myid:] - INFO [main:Environment@100] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib 2021-12-15 11:04:55,906 [myid:] - INFO [main:Environment@100] - Client environment:java.io.tmpdir=/tmp 2021-12-15 11:04:55,906 [myid:] - INFO [main:Environment@100] - Client environment:java.compiler=<NA> 2021-12-15 11:04:55,906 [myid:] - INFO [main:Environment@100] - Client environment:os.name=Linux 2021-12-15 11:04:55,906 [myid:] - INFO [main:Environment@100] - Client environment:os.arch=amd64 2021-12-15 11:04:55,906 [myid:] - INFO [main:Environment@100] - Client environment:os.version=3.10.0-1160.11.1.el7.x86_64 2021-12-15 11:04:55,907 [myid:] - INFO [main:Environment@100] - Client environment:user.name=root 2021-12-15 11:04:55,907 [myid:] - INFO [main:Environment@100] - Client environment:user.home=/root 2021-12-15 11:04:55,907 [myid:] - INFO [main:Environment@100] - Client environment:user.dir=/home/dasha 2021-12-15 11:04:55,908 [myid:] - INFO [main:ZooKeeper@442] - Initiating client connection, connectString=localhost:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@4b85612c Welcome to ZooKeeper! 2021-12-15 11:04:55,928 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@1025] - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error) JLine support is enabled 2021-12-15 11:04:55,973 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@879] - Socket connection established to localhost/127.0.0.1:2181, initiating session 2021-12-15 11:04:55,981 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@1299] - Session establishment complete on server localhost/127.0.0.1:2181, sessionid = 0x100005560090006, negotiated timeout = 30000 WATCHER:: WatchedEvent state:SyncConnected type:None path:null [zk: localhost:2181(CONNECTED) 0]
Приглашение ZooKeeper CLI имеет вид [zk: localhost:2181(CONNECTED) 0]
. После него можно вводить команды.
Для выхода из ZooKeeper CLI используйте следующую команду:
quit