docker環境搭建zk集羣

docker搭建系列

• docker環境搭建zk集羣

• docker搭建redis集羣

• docker環境搭建elasticsearch

• docker搭建rabbitmq集羣

• docker環境搭建ELK

序

對於我的開發者而言，學習分佈式的好多東東，都比較費勁，由於手頭的機器不夠。如果單機使用虛擬機來啓動一個個虛擬server話，又比較耗費資源，要求單機性可以好。幸虧docker這種輕量級的東東出現了。本文主要是記錄使用docker搭建zk集羣的過程。

下載zk鏡像

此次使用garland搭好的鏡像。

docker pull garland/zookeeper

構建zk集羣

docker run -d \
 --name=zk1 \
 --net=host \
 -e SERVER_ID=1 \
 -e ADDITIONAL_ZOOKEEPER_1=server.1=localhost:2888:3888 \
 -e ADDITIONAL_ZOOKEEPER_2=server.2=localhost:2889:3889 \
 -e ADDITIONAL_ZOOKEEPER_3=server.3=localhost:2890:3890 \
 -e ADDITIONAL_ZOOKEEPER_4=clientPort=2181 \
 garland/zookeeper

docker run -d \
 --name=zk2 \
 --net=host \
 -e SERVER_ID=2 \
 -e ADDITIONAL_ZOOKEEPER_1=server.1=localhost:2888:3888 \
 -e ADDITIONAL_ZOOKEEPER_2=server.2=localhost:2889:3889 \
 -e ADDITIONAL_ZOOKEEPER_3=server.3=localhost:2890:3890 \
 -e ADDITIONAL_ZOOKEEPER_4=clientPort=2182 \
 garland/zookeeper

docker run -d \
 --name=zk3 \
 --net=host \
 -e SERVER_ID=3 \
 -e ADDITIONAL_ZOOKEEPER_1=server.1=localhost:2888:3888 \
 -e ADDITIONAL_ZOOKEEPER_2=server.2=localhost:2889:3889 \
 -e ADDITIONAL_ZOOKEEPER_3=server.3=localhost:2890:3890 \
 -e ADDITIONAL_ZOOKEEPER_4=clientPort=2183 \
 garland/zookeeper

查看集羣

查看zk1(follower)

root@xixicat:~# echo stat | nc 127.0.0.1 2181
Zookeeper version: 3.4.6-1569965, built on 02/20/2014 09:09 GMT
Clients:
 /127.0.0.1:55531[0](queued=0,recved=1,sent=0)

Latency min/avg/max: 0/1/31
Received: 63
Sent: 62
Connections: 1
Outstanding: 0
Zxid: 0x100000005
Mode: follower
Node count: 5

查看zk2(leader)

root@xixicat:~# echo stat | nc 127.0.0.1 2182
Zookeeper version: 3.4.6-1569965, built on 02/20/2014 09:09 GMT
Clients:
 /127.0.0.1:53244[0](queued=0,recved=1,sent=0)

Latency min/avg/max: 0/0/0
Received: 1
Sent: 0
Connections: 1
Outstanding: 0
Zxid: 0x100000005
Mode: leader
Node count: 5

查看zk3(follower)

root@xixicat:~# echo stat | nc 127.0.0.1 2183
Zookeeper version: 3.4.6-1569965, built on 02/20/2014 09:09 GMT
Clients:
 /127.0.0.1:33983[0](queued=0,recved=1,sent=0)

Latency min/avg/max: 0/0/0
Received: 1
Sent: 0
Connections: 1
Outstanding: 0
Zxid: 0x100000005
Mode: follower
Node count: 5

daocloud加速

以前折騰了好幾回，國內訪問docker.io的網速仍是不行，因而就使用了daocloud加速，前提是你得裝docker-machine。試用了下，速度提高了很多。

鳴謝

• 使用不一樣Docker網絡模型搭建Zookeeper集羣(這篇文章總結的很好)

• Docker Step By Step: Containerizing Zookeeper

• Dynamic Zookeeper Cluster with Docker(有坑，沒嘗試成功)