一、zookeeper 系列 -- zookeeper 的建立與使用

本地搭建

單機版

zoo.cfg 配置文件

tickTime=2000
dataDir=/var/lib/zookeeper
clientPort=2181
initLimit=5
syncLimit=2
server.1=IP1:2888:3888

集羣版

zoo.cfg 配置文件

tickTime=2000
dataDir=/var/lib/zookeeper
clientPort=2181
initLimit=5
syncLimit=2
server.1=IP1:2888:3888
server.2=IP2:2888:3888
server.3=IP3:2888:3888

start

sh %ZK_HOME%/bin/zkCli.sh start

check server status

telnet ip:port

Docker 版

1. docker-compose.yml

version: '3.1'
services:
  zoo1:
    image: zookeeper
    restart: always
    hostname: zoo1
    ports:
      - 2181:2181

1. start container

docker-compose up -d

client script

client connect server

sh %ZK_HOME%/bin/zkCli.sh -server ip:port 
# or.  connect to the local server by default.
sh %ZK_HOME%/bin/zkCli.sh

list all command

help
#out
addauth scheme auth
close 
config [-c] [-w] [-s]
connect host:port
create [-s] [-e] [-c] [-t ttl] path [data] [acl]
delete [-v version] path
deleteall path
delquota [-n|-b] path
get [-s] [-w] path
getAcl [-s] path
history 
listquota path
ls [-s] [-w] [-R] path
ls2 path [watch]
printwatches on|off
quit 
reconfig [-s] [-v version] [[-file path] | [-members serverID=host:port1:port2;port3[,...]*]] | [-add serverId=host:port1:port2;port3[,...]]* [-remove serverId[,...]*]
redo cmdno
removewatches path [-c|-d|-a] [-l]
rmr path
set [-s] [-v version] path data
setAcl [-s] [-v version] [-R] path acl
setquota -n|-b val path
stat [-w] path
sync path

create

create -s -e path data acl

create /zk-book 123

• -s , -e：表示順序或臨時結點。默認狀況下,不添加 -s -e, 表明建立的是持久結點。
• acl： 用於進行權限控制

ls

ls [-s] [-w] [-R] path

ls /

ls 只會列出當前目錄下的子節點。

get：get data

get [-s] [-w] path

get -s /zk-book
# out
123
cZxid = 0x4
ctime = Sat Oct 26 00:46:44 UTC 2019
mZxid = 0x4
mtime = Sat Oct 26 00:46:44 UTC 2019
pZxid = 0x4
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 3
numChildren = 0

get /zk-book
#out
123

set：update data

set [-s] [-v version] path data

set -s /zk-book asdasdas
#out 
cZxid = 0x4
ctime = Sat Oct 26 00:46:44 UTC 2019
mZxid = 0x8
mtime = Sat Oct 26 01:05:37 UTC 2019
pZxid = 0x4
cversion = 0
dataVersion = 4
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 16
numChildren = 0

set /zk-book qweqweasdas

delete

delete [-v version] path

delete /zk-book

想要刪除該元素，子節點必須不爲空。