zookeeper 单机. 集群环境搭建

# zookeeper  服务器和客户端之间维持心跳的时间间隔,即每隔ticktime发送一个心跳包,单位是毫秒
# zookeeper 中session过期的时间是 ticktime*2
tickTime=2000
# Leader 允许Follower在initLimit时间内完成从Leader身上同步全部数据的工作, 随机集群的不断扩大,Follower从Leader上同步数据的时间就会变成,此时有必要,默认是0
initLimit=10
# Leader会和集群中的其他机器进行通信,在syncLimit时间内,都没有从Follower上获取返回数据,就认为这个节点挂了
syncLimit=5
# 存储快照文件的目录,默认情况下事务日志也在这里了,下面单独配置,因为因为日志的写性能影响zookeeper的性能
dataDir=E:\\zookeeper\\zookeeper-3.4.14\\data
dataLogDir=E:\\zookeeper\\zookeeper-3.4.14\\log
# the port at which the clients will connect
# 客户端连接的端口
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

# 默认的节点叫zookeeper
[zk: localhost:2181(CONNECTED) 1] ls /
[zookeeper]
# 创建一个节点
[zk: localhost:2181(CONNECTED) 11] create /changwu1 "num1" 
Created /changwu1 
 # 重新查看
[zk: localhost:2181(CONNECTED) 14] ls /
[zookeeper, changwu1]
 # 获取节点的内容
[zk: localhost:2181(CONNECTED) 17] get /changwu1
num1
cZxid = 0x2
ctime = Mon Sep 16 15:56:27 CST 2019
mZxid = 0x2
mtime = Mon Sep 16 15:56:27 CST 2019
pZxid = 0x2
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 4
numChildren = 0
# 退出
quit
# 删除一个节点
[zk: localhost:2181(CONNECTED) 32] delete /changwu1
[zk: localhost:2181(CONNECTED) 33] ls /
[zookeeper]
# 递归删除节点
rmr /path1/path2
这个path1 和 path2 其实是两个节点
# 修改节点数据
set /path "value"
# 节点的状态
[zk: localhost:2181(CONNECTED) 50] stat /z1
cZxid = 0x5
ctime = Mon Sep 16 16:04:35 CST 2019
mZxid = 0x7
mtime = Mon Sep 16 16:06:31 CST 2019
pZxid = 0x6
cversion = 1
dataVersion = 1
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 8
numChildren = 1
# 创建永久有序节点
create -s /path

[root@139 tmp]# echo 1 > zoo_data_1/myid
[root@139 tmp]# echo 2 > zoo_data_2/myid
[root@139 tmp]# echo 3 > zoo_data_3/myid

[root@139 bin]# ./zkServer.sh start ../conf/zoo1.cfg 
ZooKeeper JMX enabled by default
Using config: ../conf/zoo1.cfg
Starting zookeeper ... STARTED
[root@139 bin]# ./zkServer.sh start ../conf/zoo2.cfg 
ZooKeeper JMX enabled by default
Using config: ../conf/zoo2.cfg
Starting zookeeper ... STARTED
[root@139 bin]# ./zkServer.sh start ../conf/zoo3.cfg 
ZooKeeper JMX enabled by default
Using config: ../conf/zoo3.cfg
Starting zookeeper ... STARTED

[root@139 bin]# ./zkServer.sh status ../conf/zoo3.cfg 
ZooKeeper JMX enabled by default
Using config: ../conf/zoo3.cfg
Mode: follower
[root@139 bin]# ./zkServer.sh status ../conf/zoo1.cfg 
ZooKeeper JMX enabled by default
Using config: ../conf/zoo1.cfg
Mode: leader
[root@139 bin]# ./zkServer.sh status ../conf/zoo2.cfg 
ZooKeeper JMX enabled by default
Using config: ../conf/zoo2.cfg
Mode: follower

./zkCli -server localhost:服务端的端口号
zkCli.sh -server localhost:2181
zkCli.sh -server localhost:2182
zkCli.sh -server localhost:2183

tickTime=2000
initLimit=10
syncLimit=5
dataDir=/tmp/zoo_data_1
dataLogDir=/tmp/zoo_logs_1
clientPort=2181
# 第一个端用于Leader和Leanner之间同步, 第二个端口,用户选举过程中的投票通信
server.1=localhost:2887:3887
server.2=localhost:2888:3888
server.3=localhost:2889:3889
server.4=localhost:2890:3890:observer

tickTime=2000
initLimit=10
syncLimit=5
dataDir=/tmp/zoo_data_4
dataLogDir=/tmp/zoo_logs_4
# 观察者的配置
peerType=observer
clientPort=2184
# 第一个端用于Leader和Leanner之间同步, 第二个端口,用户选举过程中的投票通信
server.1=localhost:2887:3887
server.2=localhost:2888:3888
server.3=localhost:2889:3889
server.4=localhost:2890:3890:observer