Docker下安裝zookeeper（單機 & 集羣）

時間 2020-05-06

標籤 docker 安裝 zookeeper 單機集羣欄目 Docker 简体版

原文原文鏈接

啓動Docker後，先看一下咱們有哪些選擇。java

有官方的固然選擇官方啦~node

下載：linux

[root@localhost admin]# docker pull zookeeper
Using default tag: latest
Trying to pull repository docker.io/library/zookeeper ... 
latest: Pulling from docker.io/library/zookeeper
1ab2bdfe9778: Already exists 
7aaf9a088d61: Pull complete 
80a55c9c9fe8: Pull complete 
a0086b0e6eec: Pull complete 
4165e7457cad: Pull complete 
bcba13bcf3a1: Pull complete 
41c03a109e47: Pull complete 
4d5281c6b0d4: Pull complete 
Digest: sha256:175d6bb1471e1e37a48bfa41a9da047c80fade60fd585eae3a0e08a4ce1d39ed
Status: Downloaded newer image for docker.io/zookeeper:latest

查看鏡像詳情nginx

[root@localhost admin]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE 192.168.192.128:443/hello-2   latest              0c24558dd388        42 hours ago        660 MB 192.168.192.128:443/hello     latest              a3ba3d430bed        42 hours ago        660 MB docker.io/nginx               latest              5a3221f0137b        13 days ago         126 MB docker.io/zookeeper           latest              3487af26dee9        13 days ago         225 MB docker.io/registry            latest              f32a97de94e1        5 months ago        25.8 MB docker.io/mongo               latest              8bf72137439e        12 months ago       380 MB docker.io/influxdb            latest              34de2bdc2d7f        12 months ago       213 MB docker.io/centos              latest              5182e96772bf        12 months ago       200 MB docker.io/grafana/grafana     latest              3e16e05be9a3        13 months ago       245 MB docker.io/hello-world         latest              2cb0d9787c4d        13 months ago       1.85 kB docker.io/java                latest              d23bdf5b1b1b        2 years ago         643 MB [root@localhost admin]# docker inspect 3487af26dee9 [ { "Id": "sha256:3487af26dee9ef9eacee9a97521bc4f0243bef0b285247258c32f4a03cab92c5", "RepoTags": [ "docker.io/zookeeper:latest" ], "RepoDigests": [ "docker.io/zookeeper@sha256:175d6bb1471e1e37a48bfa41a9da047c80fade60fd585eae3a0e08a4ce1d39ed" ], "Parent": "", "Comment": "", "Created": "2019-08-15T06:10:50.178554969Z", "Container": "9a38467115f1952161d6075135d5c5287967282b834cfe68183339c810f9652b", "ContainerConfig": { "Hostname": "9a38467115f1", "Domainname": "", "User": "", "AttachStdin": false, "AttachStdout": false, "AttachStderr": false, "ExposedPorts": { "2181/tcp": {}, "2888/tcp": {}, "3888/tcp": {}, "8080/tcp": {} }, "Tty": false, "OpenStdin": false, "StdinOnce": false, "Env": [ "PATH=/usr/local/openjdk-8/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/apache-zookeeper-3.5.5-bin/bin", "LANG=C.UTF-8", "JAVA_HOME=/usr/local/openjdk-8", "JAVA_VERSION=8u222", "JAVA_BASE_URL=https://github.com/AdoptOpenJDK/openjdk8-upstream-binaries/releases/download/jdk8u222-b10/OpenJDK8U-jre_", "JAVA_URL_VERSION=8u222b10", "ZOO_CONF_DIR=/conf", "ZOO_DATA_DIR=/data", "ZOO_DATA_LOG_DIR=/datalog", "ZOO_LOG_DIR=/logs", "ZOO_TICK_TIME=2000", "ZOO_INIT_LIMIT=5", "ZOO_SYNC_LIMIT=2", "ZOO_AUTOPURGE_PURGEINTERVAL=0", "ZOO_AUTOPURGE_SNAPRETAINCOUNT=3", "ZOO_MAX_CLIENT_CNXNS=60", "ZOO_STANDALONE_ENABLED=true", "ZOO_ADMINSERVER_ENABLED=true", "ZOOCFGDIR=/conf" ], "Cmd": [ "/bin/sh", "-c", "#(nop) ", "CMD [\"zkServer.sh\" \"start-foreground\"]" ], "ArgsEscaped": true, "Image": "sha256:20bf3cc1bd5b5766b79da5265e94007d0802ce241df1636d0f63e211a79a0e3e", "Volumes": { "/data": {}, "/datalog": {}, "/logs": {} }, "WorkingDir": "/apache-zookeeper-3.5.5-bin", "Entrypoint": [ "/docker-entrypoint.sh" ], "OnBuild": null, "Labels": {} }, "DockerVersion": "18.06.1-ce", "Author": "", "Config": { "Hostname": "", "Domainname": "", "User": "", "AttachStdin": false, "AttachStdout": false, "AttachStderr": false, "ExposedPorts": { "2181/tcp": {}, "2888/tcp": {}, "3888/tcp": {}, "8080/tcp": {} }, "Tty": false, "OpenStdin": false, "StdinOnce": false, "Env": [ "PATH=/usr/local/openjdk-8/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/apache-zookeeper-3.5.5-bin/bin", "LANG=C.UTF-8", "JAVA_HOME=/usr/local/openjdk-8", "JAVA_VERSION=8u222", "JAVA_BASE_URL=https://github.com/AdoptOpenJDK/openjdk8-upstream-binaries/releases/download/jdk8u222-b10/OpenJDK8U-jre_", "JAVA_URL_VERSION=8u222b10", "ZOO_CONF_DIR=/conf", "ZOO_DATA_DIR=/data", "ZOO_DATA_LOG_DIR=/datalog", "ZOO_LOG_DIR=/logs", "ZOO_TICK_TIME=2000", "ZOO_INIT_LIMIT=5", "ZOO_SYNC_LIMIT=2", "ZOO_AUTOPURGE_PURGEINTERVAL=0", "ZOO_AUTOPURGE_SNAPRETAINCOUNT=3", "ZOO_MAX_CLIENT_CNXNS=60", "ZOO_STANDALONE_ENABLED=true", "ZOO_ADMINSERVER_ENABLED=true", "ZOOCFGDIR=/conf" ], "Cmd": [ "zkServer.sh", "start-foreground" ], "ArgsEscaped": true, "Image": "sha256:20bf3cc1bd5b5766b79da5265e94007d0802ce241df1636d0f63e211a79a0e3e", "Volumes": { "/data": {}, "/datalog": {}, "/logs": {} }, "WorkingDir": "/apache-zookeeper-3.5.5-bin", "Entrypoint": [ "/docker-entrypoint.sh" ], "OnBuild": null, "Labels": null }, "Architecture": "amd64", "Os": "linux", "Size": 225126346, "VirtualSize": 225126346, "GraphDriver": { "Name": "overlay2", "Data": { "LowerDir": "/var/lib/docker/overlay2/92185ebf7638a7b34180cfb87795dd758405cbad4fd0139b92a227d1a4b61847/diff:/var/lib/docker/overlay2/8787e91f5c03a7c03cee072019eca49a0402a0a0902be39ed0b5d651a79cce35/diff:/var/lib/docker/overlay2/ce5864ddfa4d1478047aa9fcaa03744e8a4078ebe43b41e7836c96c54c724044/diff:/var/lib/docker/overlay2/fc99437bcfbabb9e8234c06c90d1c60e58c34ac053aff1adc368b7ad3a50c158/diff:/var/lib/docker/overlay2/1779297a8980830229bd4bf58bd741730956d6797332fd07b863a1b48dcb6fa2/diff:/var/lib/docker/overlay2/ee735aa3608d890ac4751dd93581a67cb54a5dd4714081e9d09d0ebd9dbc3501/diff:/var/lib/docker/overlay2/cf6b3cbc42f3c8d1fb09b29db0dafbb4dceb120925970ab8a3871eaa8562414c/diff", "MergedDir": "/var/lib/docker/overlay2/a7fcc1b78c472cde943f20d1d4495f145308507b5fe3da8800c33dc4ce426156/merged", "UpperDir": "/var/lib/docker/overlay2/a7fcc1b78c472cde943f20d1d4495f145308507b5fe3da8800c33dc4ce426156/diff", "WorkDir": "/var/lib/docker/overlay2/a7fcc1b78c472cde943f20d1d4495f145308507b5fe3da8800c33dc4ce426156/work" } }, "RootFS": { "Type": "layers", "Layers": [ "sha256:1c95c77433e8d7bf0f519c9d8c9ca967e2603f0defbf379130d9a841cca2e28e", "sha256:2bf534399acac9c6b09a0b1d931223808000b04400a749f08187ed9ee435738d", "sha256:eb25e0278d41b9ac637d8cb2e391457cf44ce8d2bfe0646d0c9faefc96413f91", "sha256:e54bd3566d9ef3e1309a5af6caf8682f32c6ac4d6adfcbd3e601cfee4e2e0e85", "sha256:c79435051d529a7b86f5f9fc32e7e2ec401929434e5596f02a2af731f55c9f28", "sha256:76e0d7b2d700e6d17924b985703c7b5b84fb39ddcc0a1181b41217c2a11dffc4", "sha256:eecdc37df6afd77091641588f9639f63b65e8eb141e56529e00da44419c5bd04", "sha256:36e788f2d91a89375df5901f31cca33776f887c00ddfd3cf9f2466fa4cb794d6" ] } } ]

默認拉取最新的是3.5.X版本，若是你須要3.4.X版本的，要指定標籤git

單機

# 最後那個是鏡像的ID
[root@localhost admin]# docker run -d -p 2181:2181 --name some-zookeeper --restart always 3487af26dee9
d5c6f857cd88c342acf63dd58e838a4cdf912daa6c8c0115091147136e819307
[root@localhost admin]# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                                                  NAMES
d5c6f857cd88        3487af26dee9        "/docker-entrypoin..."   4 seconds ago       Up 3 seconds        2888/tcp, 3888/tcp, 0.0.0.0:2181->2181/tcp, 8080/tcp   some-zookeeper
[root@localhost admin]# docker exec -it d5c6f857cd88 bash
root@d5c6f857cd88:/apache-zookeeper-3.5.5-bin# ./bin/zkCli.sh 
Connecting to localhost:2181
2019-08-29 07:15:21,623 [myid:] - INFO  [main:Environment@109] - Client environment:zookeeper.version=3.5.5-390fe37ea45dee01bf87dc1c042b5e3dcce88653, built on 05/03/2019 12:07 GMT
2019-08-29 07:15:21,679 [myid:] - INFO  [main:Environment@109] - Client environment:host.name=d5c6f857cd88
2019-08-29 07:15:21,680 [myid:] - INFO  [main:Environment@109] - Client environment:java.version=1.8.0_222
2019-08-29 07:15:21,717 [myid:] - INFO  [main:Environment@109] - Client environment:java.vendor=Oracle Corporation
2019-08-29 07:15:21,718 [myid:] - INFO  [main:Environment@109] - Client environment:java.home=/usr/local/openjdk-8
2019-08-29 07:15:21,725 [myid:] - INFO  [main:Environment@109] - Client environment:java.class.path=/apache-zookeeper-3.5.5-bin/bin/../zookeeper-server/target/classes:/apache-zookeeper-3.5.5-bin/bin/../build/classes:/apache-zookeeper-3.5.5-bin/bin/../zookeeper-server/target/lib/*.jar:/apache-zookeeper-3.5.5-bin/bin/../build/lib/*.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/zookeeper-jute-3.5.5.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/zookeeper-3.5.5.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/slf4j-log4j12-1.7.25.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/slf4j-api-1.7.25.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/netty-all-4.1.29.Final.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/log4j-1.2.17.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/json-simple-1.1.1.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/jline-2.11.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/jetty-util-9.4.17.v20190418.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/jetty-servlet-9.4.17.v20190418.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/jetty-server-9.4.17.v20190418.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/jetty-security-9.4.17.v20190418.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/jetty-io-9.4.17.v20190418.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/jetty-http-9.4.17.v20190418.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/javax.servlet-api-3.1.0.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/jackson-databind-2.9.8.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/jackson-core-2.9.8.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/jackson-annotations-2.9.0.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/commons-cli-1.2.jar:/apache-zookeeper-3.5.5-bin/bin/../lib/audience-annotations-0.5.0.jar:/apache-zookeeper-3.5.5-bin/bin/../zookeeper-*.jar:/apache-zookeeper-3.5.5-bin/bin/../zookeeper-server/src/main/resources/lib/*.jar:/conf:
2019-08-29 07:15:22,108 [myid:] - INFO  [main:Environment@109] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2019-08-29 07:15:22,109 [myid:] - INFO  [main:Environment@109] - Client environment:java.io.tmpdir=/tmp
2019-08-29 07:15:22,109 [myid:] - INFO  [main:Environment@109] - Client environment:java.compiler=<NA>
2019-08-29 07:15:22,109 [myid:] - INFO  [main:Environment@109] - Client environment:os.name=Linux
2019-08-29 07:15:22,109 [myid:] - INFO  [main:Environment@109] - Client environment:os.arch=amd64
2019-08-29 07:15:22,110 [myid:] - INFO  [main:Environment@109] - Client environment:os.version=3.10.0-862.9.1.el7.x86_64
2019-08-29 07:15:22,110 [myid:] - INFO  [main:Environment@109] - Client environment:user.name=root
2019-08-29 07:15:22,110 [myid:] - INFO  [main:Environment@109] - Client environment:user.home=/root
2019-08-29 07:15:22,110 [myid:] - INFO  [main:Environment@109] - Client environment:user.dir=/apache-zookeeper-3.5.5-bin
2019-08-29 07:15:22,118 [myid:] - INFO  [main:Environment@109] - Client environment:os.memory.free=11MB
2019-08-29 07:15:22,148 [myid:] - INFO  [main:Environment@109] - Client environment:os.memory.max=247MB
2019-08-29 07:15:22,148 [myid:] - INFO  [main:Environment@109] - Client environment:os.memory.total=15MB
2019-08-29 07:15:22,206 [myid:] - INFO  [main:ZooKeeper@868] - Initiating client connection, connectString=localhost:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@3b95a09c
2019-08-29 07:15:22,239 [myid:] - INFO  [main:X509Util@79] - Setting -D jdk.tls.rejectClientInitiatedRenegotiation=true to disable client-initiated TLS renegotiation
2019-08-29 07:15:22,285 [myid:] - INFO  [main:ClientCnxnSocket@237] - jute.maxbuffer value is 4194304 Bytes
2019-08-29 07:15:22,366 [myid:] - INFO  [main:ClientCnxn@1653] - zookeeper.request.timeout value is 0. feature enabled=
Welcome to ZooKeeper!
JLine support is enabled
2019-08-29 07:15:22,563 [myid:localhost:2181] - INFO  [main-SendThread(localhost:2181):ClientCnxn$SendThread@1112] - Opening socket connection to server localhost/0:0:0:0:0:0:0:1:2181. Will not attempt to authenticate using SASL (unknown error)
2019-08-29 07:15:23,443 [myid:localhost:2181] - INFO  [main-SendThread(localhost:2181):ClientCnxn$SendThread@959] - Socket connection established, initiating session, client: /0:0:0:0:0:0:0:1:37198, server: localhost/0:0:0:0:0:0:0:1:2181
2019-08-29 07:15:23,520 [myid:localhost:2181] - INFO  [main-SendThread(localhost:2181):ClientCnxn$SendThread@1394] - Session establishment complete on server localhost/0:0:0:0:0:0:0:1:2181, sessionid = 0x10001216d990000, negotiated timeout = 30000

WATCHER::

WatchedEvent state:SyncConnected type:None path:null
[zk: localhost:2181(CONNECTED) 0] ls /
[zookeeper]
[zk: localhost:2181(CONNECTED) 1] quit

WATCHER::

WatchedEvent state:Closed type:None path:null
2019-08-29 07:15:37,042 [myid:] - INFO  [main:ZooKeeper@1422] - Session: 0x10001216d990000 closed
2019-08-29 07:15:37,043 [myid:] - INFO  [main-EventThread:ClientCnxn$EventThread@524] - EventThread shut down for session: 0x10001216d990000
root@d5c6f857cd88:/apache-zookeeper-3.5.5-bin# exit
exit
[root@localhost admin]#

在外部訪問（192.168.192.128:2181）github

集羣

環境：單臺宿主機（192.168.192.128），啓動三個zookeeper容器。docker

這裏涉及一個問題，就是Docker容器之間通訊的問題，這個很重要！apache

Docker有三種網絡模式，bridge、host、none，在你建立容器的時候，不指定--network默認是bridge。json

bridge：爲每個容器分配IP，並將容器鏈接到一個docker0虛擬網橋，經過docker0網橋與宿主機通訊。也就是說，此模式下，你不能用宿主機的IP+容器映射端口來進行Docker容器之間的通訊。vim

host：容器不會虛擬本身的網卡，配置本身的IP，而是使用宿主機的IP和端口。這樣一來，Docker容器之間的通訊就能夠用宿主機的IP+容器映射端口

none：無網絡。

=====================================================

先在本地建立目錄：

[root@localhost admin]# mkdir /usr/local/zookeeper-cluster [root@localhost admin]# mkdir /usr/local/zookeeper-cluster/node1 [root@localhost admin]# mkdir /usr/local/zookeeper-cluster/node2 [root@localhost admin]# mkdir /usr/local/zookeeper-cluster/node3 [root@localhost admin]# ll /usr/local/zookeeper-cluster/ total 0 drwxr-xr-x. 2 root root 6 Aug 28 23:02 node1 drwxr-xr-x. 2 root root 6 Aug 28 23:02 node2 drwxr-xr-x. 2 root root 6 Aug 28 23:02 node3

而後執行命令啓動

docker run -d -p 2181:2181 -p 2888:2888 -p 3888:3888 --name zookeeper_node1 --privileged --restart always \ -v /usr/local/zookeeper-cluster/node1/volumes/data:/data \ -v /usr/local/zookeeper-cluster/node1/volumes/datalog:/datalog \ -v /usr/local/zookeeper-cluster/node1/volumes/logs:/logs \ -e ZOO_MY_ID=1 \ -e "ZOO_SERVERS=server.1=192.168.192.128:2888:3888;2181 server.2=192.168.192.128:2889:3889;2182 server.3=192.168.192.128:2890:3890;2183" 3487af26dee9 docker run -d -p 2182:2181 -p 2889:2888 -p 3889:3888 --name zookeeper_node2 --privileged --restart always \ -v /usr/local/zookeeper-cluster/node2/volumes/data:/data \ -v /usr/local/zookeeper-cluster/node2/volumes/datalog:/datalog \ -v /usr/local/zookeeper-cluster/node2/volumes/logs:/logs \ -e ZOO_MY_ID=2 \ -e "ZOO_SERVERS=server.1=192.168.192.128:2888:3888;2181 server.2=192.168.192.128:2889:3889;2182 server.3=192.168.192.128:2890:3890;2183" 3487af26dee9 docker run -d -p 2183:2181 -p 2890:2888 -p 3890:3888 --name zookeeper_node3 --privileged --restart always \ -v /usr/local/zookeeper-cluster/node3/volumes/data:/data \ -v /usr/local/zookeeper-cluster/node3/volumes/datalog:/datalog \ -v /usr/local/zookeeper-cluster/node3/volumes/logs:/logs \ -e ZOO_MY_ID=3 \ -e "ZOO_SERVERS=server.1=192.168.192.128:2888:3888;2181 server.2=192.168.192.128:2889:3889;2182 server.3=192.168.192.128:2890:3890;2183" 3487af26dee9

【坑】

乍一看，沒什麼問題啊，首先映射端口到宿主機，而後三個zookeeper之間的訪問地址則是宿主機IP:映射端口，沒毛病啊；

看我前面講的網絡模式就能看出問題，ZOO_SERVERS裏面的IP有問題，犯這個錯誤都是不瞭解Docker的網絡模式的。什麼錯誤往下看。

關於ZOO_SERVERS

什麼意思呢，3.5.0開始，不該該再使用clientPort和clientPortAddress配置參數。相反，這些信息如今是server關鍵字規範的一部分。

端口映射三個容器不同，好比2181/2182/2183，由於是一臺宿主機嘛，端口不能衝突，若是你不在同一臺機器，就不用修改端口。

最後的那個參數是鏡像ID，也能夠是鏡像名稱:TAG。

--privileged=true參數是爲了解決【chown: changing ownership of '/data': Permission denied】，也能夠省略true

執行結果：

[root@localhost admin]# docker run -d -p 2181:2181 -p 2888:2888 -p 3888:3888 --name zookeeper_node1 --privileged --restart always \ > -v /usr/local/zookeeper-cluster/node1/volumes/data:/data \ > -v /usr/local/zookeeper-cluster/node1/volumes/datalog:/datalog \ > -v /usr/local/zookeeper-cluster/node1/volumes/logs:/logs \ > -e ZOO_MY_ID=1 \ > -e "ZOO_SERVERS=server.1=192.168.192.128:2888:3888;2181 server.2=192.168.192.128:2889:3889;2182 server.3=192.168.192.128:2890:3890;2183" 3487af26dee9 4bfa6bbeb936037e178a577e5efbd06d4a963e91d67274413b933fd189917776 [root@localhost admin]# docker run -d -p 2182:2181 -p 2889:2888 -p 3889:3888 --name zookeeper_node2 --privileged --restart always \ > -v /usr/local/zookeeper-cluster/node2/volumes/data:/data \ > -v /usr/local/zookeeper-cluster/node2/volumes/datalog:/datalog \ > -v /usr/local/zookeeper-cluster/node2/volumes/logs:/logs \ > -e ZOO_MY_ID=2 \ > -e "ZOO_SERVERS=server.1=192.168.192.128:2888:3888;2181 server.2=192.168.192.128:2889:3889;2182 server.3=192.168.192.128:2890:3890;2183" 3487af26dee9 dbb7f1f323a09869d043152a4995e73bad5f615fd81bf11143fd1c28180f9869 [root@localhost admin]# docker run -d -p 2183:2181 -p 2890:2888 -p 3890:3888 --name zookeeper_node3 --privileged --restart always \ > -v /usr/local/zookeeper-cluster/node3/volumes/data:/data \ > -v /usr/local/zookeeper-cluster/node3/volumes/datalog:/datalog \ > -v /usr/local/zookeeper-cluster/node3/volumes/logs:/logs \ > -e ZOO_MY_ID=3 \ > -e "ZOO_SERVERS=server.1=192.168.192.128:2888:3888;2181 server.2=192.168.192.128:2889:3889;2182 server.3=192.168.192.128:2890:3890;2183" 3487af26dee9 6dabae1d92f0e861cc7515c014c293f80075c2762b254fc56312a6d3b450a919 [root@localhost admin]#

查看啓動的容器

[root@localhost admin]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 6dabae1d92f0 3487af26dee9 "/docker-entrypoin..."   31 seconds ago      Up 29 seconds       8080/tcp, 0.0.0.0:2183->2181/tcp, 0.0.0.0:2890->2888/tcp, 0.0.0.0:3890->3888/tcp zookeeper_node3 dbb7f1f323a0 3487af26dee9 "/docker-entrypoin..."   36 seconds ago      Up 35 seconds       8080/tcp, 0.0.0.0:2182->2181/tcp, 0.0.0.0:2889->2888/tcp, 0.0.0.0:3889->3888/tcp zookeeper_node2 4bfa6bbeb936 3487af26dee9 "/docker-entrypoin..."   46 seconds ago      Up 45 seconds       0.0.0.0:2181->2181/tcp, 0.0.0.0:2888->2888/tcp, 0.0.0.0:3888->3888/tcp, 8080/tcp zookeeper_node1 [root@localhost admin]#

不是說有錯誤嗎？怎麼還啓動成功了？？咱們來看下節點1的啓動日誌

[root@localhost admin]# docker logs -f 4bfa6bbeb936 ZooKeeper JMX enabled by default ... 2019-08-29 09:20:22,665 [myid:1] - WARN  [WorkerSender[myid=1]:QuorumCnxManager@677] - Cannot open channel to 2 at election address /192.168.192.128:3889 java.net.ConnectException: Connection refused (Connection refused) at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:589) at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:648) at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:705) at org.apache.zookeeper.server.quorum.QuorumCnxManager.toSend(QuorumCnxManager.java:618) at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.process(FastLeaderElection.java:477) at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.run(FastLeaderElection.java:456) at java.lang.Thread.run(Thread.java:748) 2019-08-29 09:20:22,666 [myid:1] - WARN  [WorkerSender[myid=1]:QuorumCnxManager@677] - Cannot open channel to 3 at election address /192.168.192.128:3890 java.net.ConnectException: Connection refused (Connection refused) at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:589) at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:648) at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:705) at org.apache.zookeeper.server.quorum.QuorumCnxManager.toSend(QuorumCnxManager.java:618) at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.process(FastLeaderElection.java:477) at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.run(FastLeaderElection.java:456) at java.lang.Thread.run(Thread.java:748)

鏈接不上2 和 3，爲何呢，由於在默認的Docker網絡模式下，經過宿主機的IP+映射端口，根本找不到啊！他們有本身的IP啊！以下：

[root@localhost admin]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 6dabae1d92f0 3487af26dee9 "/docker-entrypoin..."   5 minutes ago       Up 5 minutes        8080/tcp, 0.0.0.0:2183->2181/tcp, 0.0.0.0:2890->2888/tcp, 0.0.0.0:3890->3888/tcp zookeeper_node3 dbb7f1f323a0 3487af26dee9 "/docker-entrypoin..."   6 minutes ago       Up 6 minutes        8080/tcp, 0.0.0.0:2182->2181/tcp, 0.0.0.0:2889->2888/tcp, 0.0.0.0:3889->3888/tcp zookeeper_node2 4bfa6bbeb936 3487af26dee9 "/docker-entrypoin..."   6 minutes ago       Up 6 minutes        0.0.0.0:2181->2181/tcp, 0.0.0.0:2888->2888/tcp, 0.0.0.0:3888->3888/tcp, 8080/tcp zookeeper_node1 [root@localhost admin]# docker inspect 4bfa6bbeb936 "Networks": { "bridge": { "IPAMConfig": null, "Links": null, "Aliases": null, "NetworkID": "5fc1ce4362afe3d34fdf260ab0174c36fe4b7daf2189702eae48101a755079f3", "EndpointID": "368237e4c903cc663111f1fe33ac4626a9100fb5a22aec85f5eccbc6968a1631", "Gateway": "172.17.0.1", "IPAddress": "172.17.0.2", "IPPrefixLen": 16, "IPv6Gateway": "", "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "MacAddress": "02:42:ac:11:00:02" } } } } ] [root@localhost admin]# docker inspect dbb7f1f323a0 "Networks": { "bridge": { "IPAMConfig": null, "Links": null, "Aliases": null, "NetworkID": "5fc1ce4362afe3d34fdf260ab0174c36fe4b7daf2189702eae48101a755079f3", "EndpointID": "8a9734044a566d5ddcd7cbbf6661abb2730742f7c73bd8733ede9ed8ef106659", "Gateway": "172.17.0.1", "IPAddress": "172.17.0.3", "IPPrefixLen": 16, "IPv6Gateway": "", "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "MacAddress": "02:42:ac:11:00:03" } } } } ] [root@localhost admin]# docker inspect 6dabae1d92f0 "Networks": { "bridge": { "IPAMConfig": null, "Links": null, "Aliases": null, "NetworkID": "5fc1ce4362afe3d34fdf260ab0174c36fe4b7daf2189702eae48101a755079f3", "EndpointID": "b10329b9940a07aacb016d8d136511ec388de02bf3bd0e0b50f7f4cbb7f138ec", "Gateway": "172.17.0.1", "IPAddress": "172.17.0.4", "IPPrefixLen": 16, "IPv6Gateway": "", "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "MacAddress": "02:42:ac:11:00:04" } } } } ]

node1---172.17.0.2
node2---172.17.0.3
node3---172.17.0.4

既然咱們知道了它有本身的IP，那又出現另外一個問題了，就是它的ip是動態的，啓動以前咱們沒法得知。有個解決辦法就是建立本身的bridge網絡，而後建立容器的時候指定ip。

【正確方式開始】

[root@localhost admin]# docker network create --driver bridge --subnet=172.18.0.0/16 --gateway=172.18.0.1 zoonet 8257c501652a214d27efdf5ef71ff38bfe222c3a2a7898be24b8df9db1fb3b13 [root@localhost admin]# docker network ls NETWORK ID NAME DRIVER SCOPE 5fc1ce4362af bridge bridge local 6aa33e21444e host host local 20e563b93ce9 none null local 8257c501652a zoonet bridge local [root@localhost admin]# docker network inspect 8257c501652a [ { "Name": "zoonet", "Id": "8257c501652a214d27efdf5ef71ff38bfe222c3a2a7898be24b8df9db1fb3b13", "Created": "2019-08-29T06:08:01.442601483-04:00", "Scope": "local", "Driver": "bridge", "EnableIPv6": false, "IPAM": { "Driver": "default", "Options": {}, "Config": [ { "Subnet": "172.18.0.0/16", "Gateway": "172.18.0.1" } ] }, "Internal": false, "Attachable": false, "Containers": {}, "Options": {}, "Labels": {} } ]

而後咱們修改一下zookeeper容器的建立命令。

docker run -d -p 2181:2181 --name zookeeper_node1 --privileged --restart always --network zoonet --ip 172.18.0.2 \ -v /usr/local/zookeeper-cluster/node1/volumes/data:/data \ -v /usr/local/zookeeper-cluster/node1/volumes/datalog:/datalog \ -v /usr/local/zookeeper-cluster/node1/volumes/logs:/logs \ -e ZOO_MY_ID=1 \ -e "ZOO_SERVERS=server.1=172.18.0.2:2888:3888;2181 server.2=172.18.0.3:2888:3888;2181 server.3=172.18.0.4:2888:3888;2181" 3487af26dee9 docker run -d -p 2182:2181 --name zookeeper_node2 --privileged --restart always --network zoonet --ip 172.18.0.3 \ -v /usr/local/zookeeper-cluster/node2/volumes/data:/data \ -v /usr/local/zookeeper-cluster/node2/volumes/datalog:/datalog \ -v /usr/local/zookeeper-cluster/node2/volumes/logs:/logs \ -e ZOO_MY_ID=2 \ -e "ZOO_SERVERS=server.1=172.18.0.2:2888:3888;2181 server.2=172.18.0.3:2888:3888;2181 server.3=172.18.0.4:2888:3888;2181" 3487af26dee9 docker run -d -p 2183:2181 --name zookeeper_node3 --privileged --restart always --network zoonet --ip 172.18.0.4 \ -v /usr/local/zookeeper-cluster/node3/volumes/data:/data \ -v /usr/local/zookeeper-cluster/node3/volumes/datalog:/datalog \ -v /usr/local/zookeeper-cluster/node3/volumes/logs:/logs \ -e ZOO_MY_ID=3 \ -e "ZOO_SERVERS=server.1=172.18.0.2:2888:3888;2181 server.2=172.18.0.3:2888:3888;2181 server.3=172.18.0.4:2888:3888;2181" 3487af26dee9

1. 因爲2888 、3888 不須要暴露，就不映射了；

2. 指定本身的網絡，並指定IP；

3. 每一個容器之間環境是隔離的，因此容器內所用的端口同樣：2181/2888/3888

運行結果：

[root@localhost admin]# docker run -d -p 2181:2181 --name zookeeper_node1 --privileged --restart always --network zoonet --ip 172.18.0.2 \ > -v /usr/local/zookeeper-cluster/node1/volumes/data:/data \ > -v /usr/local/zookeeper-cluster/node1/volumes/datalog:/datalog \ > -v /usr/local/zookeeper-cluster/node1/volumes/logs:/logs \ > -e ZOO_MY_ID=1 \ > -e "ZOO_SERVERS=server.1=172.18.0.2:2888:3888;2181 server.2=172.18.0.3:2888:3888;2181 server.3=172.18.0.4:2888:3888;2181" 3487af26dee9 50c07cf11fab2d3b4da6d8ce48d8ed4a7beaab7d51dd542b8309f781e9920c36 [root@localhost admin]# docker run -d -p 2182:2181 --name zookeeper_node2 --privileged --restart always --network zoonet --ip 172.18.0.3 \ > -v /usr/local/zookeeper-cluster/node2/volumes/data:/data \ > -v /usr/local/zookeeper-cluster/node2/volumes/datalog:/datalog \ > -v /usr/local/zookeeper-cluster/node2/volumes/logs:/logs \ > -e ZOO_MY_ID=2 \ > -e "ZOO_SERVERS=server.1=172.18.0.2:2888:3888;2181 server.2=172.18.0.3:2888:3888;2181 server.3=172.18.0.4:2888:3888;2181" 3487af26dee9 649a4dbfb694504acfe4b8e11b990877964477bb41f8a230bd191cba7d20996f [root@localhost admin]# docker run -d -p 2183:2181 --name zookeeper_node3 --privileged --restart always --network zoonet --ip 172.18.0.4 \ > -v /usr/local/zookeeper-cluster/node3/volumes/data:/data \ > -v /usr/local/zookeeper-cluster/node3/volumes/datalog:/datalog \ > -v /usr/local/zookeeper-cluster/node3/volumes/logs:/logs \ > -e ZOO_MY_ID=3 \ > -e "ZOO_SERVERS=server.1=172.18.0.2:2888:3888;2181 server.2=172.18.0.3:2888:3888;2181 server.3=172.18.0.4:2888:3888;2181" 3487af26dee9 c8bc1b9ae9adf86e9c7f6a3264f883206c6d0e4f6093db3200de80ef39f57160 [root@localhost admin]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES c8bc1b9ae9ad 3487af26dee9 "/docker-entrypoin..."   17 seconds ago      Up 16 seconds       2888/tcp, 3888/tcp, 8080/tcp, 0.0.0.0:2183->2181/tcp zookeeper_node3 649a4dbfb694 3487af26dee9 "/docker-entrypoin..."   22 seconds ago      Up 21 seconds       2888/tcp, 3888/tcp, 8080/tcp, 0.0.0.0:2182->2181/tcp zookeeper_node2 50c07cf11fab 3487af26dee9 "/docker-entrypoin..."   33 seconds ago      Up 32 seconds       2888/tcp, 3888/tcp, 0.0.0.0:2181->2181/tcp, 8080/tcp zookeeper_node1 [root@localhost admin]#

進入容器內部驗證一下：

[root@localhost admin]# docker exec -it 50c07cf11fab bash root@50c07cf11fab:/apache-zookeeper-3.5.5-bin# ./bin/zkServer.sh status ZooKeeper JMX enabled by default Using config: /conf/zoo.cfg Client port found: 2181. Client address: localhost. Mode: follower root@50c07cf11fab:/apache-zookeeper-3.5.5-bin# exit exit [root@localhost admin]# docker exec -it 649a4dbfb694 bash root@649a4dbfb694:/apache-zookeeper-3.5.5-bin# ./bin/zkServer.sh status ZooKeeper JMX enabled by default Using config: /conf/zoo.cfg Client port found: 2181. Client address: localhost. Mode: leader root@649a4dbfb694:/apache-zookeeper-3.5.5-bin# exit exit [root@localhost admin]# docker exec -it c8bc1b9ae9ad bash root@c8bc1b9ae9ad:/apache-zookeeper-3.5.5-bin# ./bin/zkServer.sh status ZooKeeper JMX enabled by default Using config: /conf/zoo.cfg Client port found: 2181. Client address: localhost. Mode: follower root@c8bc1b9ae9ad:/apache-zookeeper-3.5.5-bin# exit exit [root@localhost admin]#

在驗證一下建立節點

開啓防火牆，以供外部訪問

firewall-cmd --zone=public --add-port=2181/tcp --permanent firewall-cmd --zone=public --add-port=2182/tcp --permanent firewall-cmd --zone=public --add-port=2183/tcp --permanent systemctl restart firewalld firewall-cmd --list-all

在本地，我用zookeeper的客戶端鏈接虛擬機上的集羣：

能夠看到鏈接成功！

集羣安裝方式二：經過docker stack deploy或docker-compose安裝

這裏用docker-compose。先安裝docker-compose

[root@localhost admin]# curl -L "https://github.com/docker/compose/releases/download/1.24.1/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose % Total    % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100   617    0   617    0     0    145      0 --:--:--  0:00:04 --:--:--   145
100 15.4M  100 15.4M    0     0   131k      0  0:02:00  0:02:00 --:--:-- 136k [root@localhost admin]# chmod +x /usr/local/bin/docker-compose

檢查版本（驗證是否安裝成功）

[root@localhost admin]# docker-compose --version docker-compose version 1.24.1, build 4667896b

卸載的話

rm /usr/local/bin/docker-compose

開始配置，新建三個掛載目錄

[root@localhost admin]# mkdir /usr/local/zookeeper-cluster/node4 [root@localhost admin]# mkdir /usr/local/zookeeper-cluster/node5 [root@localhost admin]# mkdir /usr/local/zookeeper-cluster/node6

新建任意目錄，而後在裏面新建一個文件

[root@localhost admin]# mkdir DockerComposeFolder [root@localhost admin]# cd DockerComposeFolder/ [root@localhost DockerComposeFolder]# vim docker-compose.yml

文件內容以下：（自定義網絡見上面）

version: '3.1' services: zoo1: image: zookeeper restart: always privileged: true
    hostname: zoo1 ports: - 2181:2181 volumes: # 掛載數據 - /usr/local/zookeeper-cluster/node4/data:/data - /usr/local/zookeeper-cluster/node4/datalog:/datalog environment: ZOO_MY_ID: 4 ZOO_SERVERS: server.4=0.0.0.0:2888:3888;2181 server.5=zoo2:2888:3888;2181 server.6=zoo3:2888:3888;2181 networks: default: ipv4_address: 172.18.0.14 zoo2: image: zookeeper restart: always privileged: true
    hostname: zoo2 ports: - 2182:2181 volumes: # 掛載數據 - /usr/local/zookeeper-cluster/node5/data:/data - /usr/local/zookeeper-cluster/node5/datalog:/datalog environment: ZOO_MY_ID: 5 ZOO_SERVERS: server.4=zoo1:2888:3888;2181 server.5=0.0.0.0:2888:3888;2181 server.6=zoo3:2888:3888;2181 networks: default: ipv4_address: 172.18.0.15 zoo3: image: zookeeper restart: always privileged: true
    hostname: zoo3 ports: - 2183:2181 volumes: # 掛載數據 - /usr/local/zookeeper-cluster/node6/data:/data - /usr/local/zookeeper-cluster/node6/datalog:/datalog environment: ZOO_MY_ID: 6 ZOO_SERVERS: server.4=zoo1:2888:3888;2181 server.5=zoo2:2888:3888;2181 server.6=0.0.0.0:2888:3888;2181 networks: default: ipv4_address: 172.18.0.16 networks: # 自定義網絡 default: external: name: zoonet

注意yaml文件裏不能有tab，只能有空格。

關於version與Docker版本的關係以下：

而後執行（-d後臺啓動）

docker-compose -f docker-compose.yml up -d

查看已啓動的容器

[root@localhost DockerComposeFolder]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES a2c14814037d zookeeper "/docker-entrypoin..."   6 minutes ago       Up About a minute   2888/tcp, 3888/tcp, 8080/tcp, 0.0.0.0:2183->2181/tcp dockercomposefolder_zoo3_1 50310229b216 zookeeper "/docker-entrypoin..."   6 minutes ago       Up About a minute   2888/tcp, 3888/tcp, 0.0.0.0:2181->2181/tcp, 8080/tcp dockercomposefolder_zoo1_1 475d8a9e2d08 zookeeper "/docker-entrypoin..."   6 minutes ago       Up About a minute   2888/tcp, 3888/tcp, 8080/tcp, 0.0.0.0:2182->2181/tcp   dockercomposefolder_zoo2_1

進入一個容器

[root@localhost DockerComposeFolder]# docker exec -it a2c14814037d bash root@zoo3:/apache-zookeeper-3.5.5-bin# ./bin/zkCli.sh Connecting to localhost:2181 .... WatchedEvent state:SyncConnected type:None path:null [zk: localhost:2181(CONNECTED) 0] [zk: localhost:2181(CONNECTED) 1] ls / [zookeeper] [zk: localhost:2181(CONNECTED) 2] create /hi Created /hi [zk: localhost:2181(CONNECTED) 3] ls / [hi, zookeeper]

進入另外一個容器

[root@localhost DockerComposeFolder]# docker exec -it 50310229b216 bash root@zoo1:/apache-zookeeper-3.5.5-bin# ./bin/zkCli.sh Connecting to localhost:2181 ... WatchedEvent state:SyncConnected type:None path:null [zk: localhost:2181(CONNECTED) 0] ls / [hi, zookeeper]

本地客戶端鏈接集羣：

zkCli.cmd -server 192.168.192.128:2181,192.168.192.128:2182,192.168.192.128:2183

查看

中止全部活動容器

刪除全部已中止的容器

更多docker-compose的命令：

[root@localhost DockerComposeFolder]# docker-compose --help Define and run multi-container applications with Docker. Usage: docker-compose [-f <arg>...] [options] [COMMAND] [ARGS...] docker-compose -h|--help Options: -f, --file FILE             Specify an alternate compose file (default: docker-compose.yml) -p, --project-name NAME Specify an alternate project name (default: directory name) --verbose                   Show more output --log-level LEVEL Set log level (DEBUG, INFO, WARNING, ERROR, CRITICAL) --no-ansi Do not print ANSI control characters -v, --version Print version and exit -H, --host HOST Daemon socket to connect to --tls                       Use TLS; implied by --tlsverify --tlscacert CA_PATH Trust certs signed only by this CA --tlscert CLIENT_CERT_PATH  Path to TLS certificate file
  --tlskey TLS_KEY_PATH       Path to TLS key file
  --tlsverify Use TLS and verify the remote --skip-hostname-check       Don't check the daemon's hostname against the name specified in the client certificate --project-directory PATH Specify an alternate working directory (default: the path of the Compose file) --compatibility If set, Compose will attempt to convert keys in v3 files to their non-Swarm equivalent Commands: build Build or rebuild services bundle Generate a Docker bundle from the Compose file config Validate and view the Compose file create Create services down Stop and remove containers, networks, images, and volumes events Receive real time events from containers exec Execute a command in a running container help Get help on a command images List images kill Kill containers logs View output from containers pause Pause services port Print the public port for a port binding ps List containers pull Pull service images push Push service images restart Restart services rm Remove stopped containers run Run a one-off command scale Set number of containers for a service start Start services stop Stop services top Display the running processes unpause Unpause services up Create and start containers version Show the Docker-Compose version information