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這篇文章主要講解了Docker下怎么安裝zookeeper，內(nèi)容清晰明了，對(duì)此有興趣的小伙伴可以學(xué)習(xí)一下，相信大家閱讀完之后會(huì)有幫助。
啟動(dòng)Docker后，先看一下我們有哪些選擇。
有官方的當(dāng)然選擇官方啦~
下載：
[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
[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(rèn)拉取最新的是3.5.X版本，如果你需要3.4.X版本的，要指定標(biāo)簽
單機(jī)
# 最后那個(gè)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(wèn)（192.168.192.128:2181）
集群
環(huán)境：?jiǎn)闻_(tái)宿主機(jī)（192.168.192.128），啟動(dòng)三個(gè)zookeeper容器。
這里涉及一個(gè)問(wèn)題，就是Docker容器之間通信的問(wèn)題，這個(gè)很重要！
Docker有三種網(wǎng)絡(luò)模式，bridge、host、none，在你創(chuàng)建容器的時(shí)候，不指定--network默認(rèn)是bridge。
bridge：為每一個(gè)容器分配IP，并將容器連接到一個(gè)docker0虛擬網(wǎng)橋，通過(guò)docker0網(wǎng)橋與宿主機(jī)通信。也就是說(shuō)，此模式下，你不能用宿主機(jī)的IP+容器映射端口來(lái)進(jìn)行Docker容器之間的通信。
host：容器不會(huì)虛擬自己的網(wǎng)卡，配置自己的IP，而是使用宿主機(jī)的IP和端口。這樣一來(lái)，Docker容器之間的通信就可以用宿主機(jī)的IP+容器映射端口
none：無(wú)網(wǎng)絡(luò)。
=====================================================
先在本地創(chuàng)建目錄：
[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
然后執(zhí)行命令啟動(dòng)
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(méi)什么問(wèn)題啊，首先映射端口到宿主機(jī)，然后三個(gè)zookeeper之間的訪問(wèn)地址則是宿主機(jī)IP:映射端口，沒(méi)毛病?。?/p>
看我前面講的網(wǎng)絡(luò)模式就能看出問(wèn)題，ZOO_SERVERS里面的IP有問(wèn)題，犯這個(gè)錯(cuò)誤都是不了解Docker的網(wǎng)絡(luò)模式的。什么錯(cuò)誤往下看。
關(guān)于ZOO_SERVERS
什么意思呢，3.5.0開(kāi)始，不應(yīng)該再使用clientPort和clientPortAddress配置參數(shù)。相反，這些信息現(xiàn)在是server關(guān)鍵字規(guī)范的一部分。
端口映射三個(gè)容器不一樣，比如2181/2182/2183，因?yàn)槭且慌_(tái)宿主機(jī)嘛，端口不能沖突，如果你不在同一臺(tái)機(jī)器，就不用修改端口。
最后的那個(gè)參數(shù)是鏡像ID，也可以是鏡像名稱:TAG。
--privileged=true參數(shù)是為了解決【chown: changing ownership of '/data': Permission denied】，也可以省略true
執(zhí)行結(jié)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]#
查看啟動(dòng)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(shuō)有錯(cuò)誤嗎？怎么還啟動(dòng)成功了？？我們來(lái)看下節(jié)點(diǎn)1的啟動(dòng)日志
[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)
連接不上2 和 3，為什么呢，因?yàn)樵谀J(rèn)的Docker網(wǎng)絡(luò)模式下，通過(guò)宿主機(jī)的IP+映射端口，根本找不到??！他們有自己的IP??！如下：
[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
既然我們知道了它有自己的IP，那又出現(xiàn)另一個(gè)問(wèn)題了，就是它的ip是動(dòng)態(tài)的，啟動(dòng)之前我們無(wú)法得知。有個(gè)解決辦法就是創(chuàng)建自己的bridge網(wǎng)絡(luò)，然后創(chuàng)建容器的時(shí)候指定ip。
【正確方式開(kāi)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": {}
}
]然后我們修改一下zookeeper容器的創(chuàng)建命令。
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. 由于2888 、3888不需要暴露，就不映射了；
2. 指定自己的網(wǎng)絡(luò)，并指定IP；
3. 每個(gè)容器之間環(huán)境是隔離的，所以容器內(nèi)所用的端口一樣：2181/2888/3888
運(yùn)行結(jié)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(jìn)入容器內(nèi)部驗(yàn)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(yàn)證一下創(chuàng)建節(jié)點(diǎn)
開(kāi)啟防火墻，以供外部訪問(wèn)
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的客戶端連接虛擬機(jī)上的集群：
可以看到連接成功！
集群安裝方式二：通過(guò)docker stack deploy或docker-compose安裝
這里用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(yàn)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(kāi)始配置，新建三個(gè)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，然后在里面新建一個(gè)文件
[root@localhost admin]# mkdir DockerComposeFolder [root@localhost admin]# cd DockerComposeFolder/ [root@localhost DockerComposeFolder]# vim docker-compose.yml
文件內(nèi)容如下：（自定義網(wǎng)絡(luò)見(jiàn)上面）
version: '3.1'
services:
zoo1:
image: zookeeper
restart: always
privileged: true
hostname: zoo1
ports:
- 2181:2181
volumes: # 掛載數(shù)據(jù)
- /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(shù)據(jù)
- /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(shù)據(jù)
- /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(wǎng)絡(luò)
default:
external:
name: zoonet注意yaml文件里不能有tab，只能有空格。
關(guān)于version與Docker版本的關(guān)系如下：
然后執(zhí)行（-d后臺(tái)啟動(dòng)）
docker-compose -f docker-compose.yml up -d
查看已啟動(dòng)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(jìn)入一個(gè)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(jìn)入另一個(gè)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]
本地客戶端連接集群：
zkCli.cmd -server 192.168.192.128:2181,192.168.192.128:2182,192.168.192.128:2183
查看
停止所有活動(dòng)容器
刪除所有已停止的容器
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看完上述內(nèi)容，是不是對(duì)Docker下怎么安裝zookeeper有進(jìn)一步的了解，如果還想學(xué)習(xí)更多內(nèi)容，歡迎關(guān)注億速云行業(yè)資訊頻道。
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