一步一步教你搭建基於docker的MongoDB複製叢集環境

一步一步教你搭建基於docker的MongoDB複製叢集環境 1.安裝docker 2.建立MongoDB的Image 3.搭建MongoDB的叢集

本文——-鏈—–接
http://blog.csdn.net/pddddd/article/details/46893593

Docker 是一個開源的應用程式容器引擎，讓開發人員可以打包他們的應用以及依賴包到一個可移植的容器中。

1.ubuntu14.04安裝docker

參考文檔 http://docs.docker.com/installation/ubuntulinux/參考文檔 http://docs.docker.com/mac/started/pc@pc-ThinkPad:~$ wget -qO-https://get.docker.com/ | shpc@pc-ThinkPad:~$ sudo usermod -aG docker pcpc@pc-ThinkPad:~$ sudo reboot如果是其他（更早）版本的Linux參考安裝Docker使用apt-get命令:    $ apt-get install docker.io啟動服務和守護進程    $ service docker.io status    $ service docker.io start建立軟串連：ln -sf /usr/bin/docker.io /usr/local/bin/docker    如沒有提示錯誤則說明你已經在Ubuntu14.04上面快速安裝Docker成功了。卸載Uninstallation    $ sudo apt-get purge lxc-dockerTo uninstall the Docker package and dependencies that are no longer needed:    $ sudo apt-get autoremove --purge lxc-docker

2.建立MongoDB的Image

pc@pc-ThinkPad:~$ docker pull ubuntu:14.04pc@pc-ThinkPad:~$ sudo docker imagesREPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZEubuntu              14.04               6d4946999d4f        3 weeks ago         188.3 MBpc@pc-ThinkPad:~$ 

編寫dockerfilepc@pc-ThinkPad:~$ vim Dockerfile 

Dockerfile內容如下

#VERSION 0.1.0FROM ubuntu:14.04#Install someRUN apt-get cleanRUN apt-get updateRUN apt-get install -y g++RUN apt-get install -y openssh-server RUN mkdir -p /var/run/sshd#open port 22EXPOSE 22#CMD ["/usr/sbin/sshd", "-D"]RUN apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 7F0CEB10ENV MONGO_MAJOR 3.0RUN echo "deb http://repo.mongodb.org/apt/debian wheezy/mongodb-org/$MONGO_MAJOR main" > /etc/apt/sources.list.d/mongodb-org.list# Install MongoDBRUN apt-get updateRUN sudo apt-get install -y mongodb-org=3.0.4 mongodb-org-server=3.0.4 mongodb-org-shell=3.0.4 mongodb-org-mongos=3.0.4 mongodb-org-tools=3.0.4# Create the MongoDB data directoryRUN mkdir -p /data/db#open port 27017 EXPOSE 27017ENTRYPOINT ["usr/bin/mongod"]

寫好了Dockerfile 就可以產生帶有mongodb的image ：後面是flag .表示當前路徑的Dockerfilepc@pc-ThinkPad:~$ sudo docker build -t pc/mongos:master .再次查看一下docker imagepc@pc-ThinkPad:~$ sudo docker imagesREPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZEpc/mongod           master              6fcc1b62e091        54 minutes ago      542 MBubuntu              14.04               6d4946999d4f        4 weeks ago         188.3 MB

3.搭建MongoDB的叢集

下面我們就啟動3個基於mongod：master的container

pc@pc-ThinkPad:~$ sudo docker run --name rs_server1 -p 21117:27017 -d pc/mongod:master --noprealloc --smallfiles --replSet rs1 操作成功之後返回的就是容器的id6306bf3057f8ebca79d7bd130ba35e260da7177925a85a1c9a3d5d21c551e0aa後面兩個容器同理pc@pc-ThinkPad:~$ sudo docker run --name rs_server2 -p 22117:27017 -d pc/mongod:master --noprealloc --smallfiles --replSet rs1 b60c977313e1b6143c0346e1c6138c3ad4831818f6349fc98181fa76edbd2effpc@pc-ThinkPad:~$ sudo docker run --name rs_server3 -p 23117:27017 -d pc/mongod:master --noprealloc --smallfiles --replSet rs1 cebebc142a1bfed7162a06441ad841f4173c3f71c97f3dded8d5c3833ea9fa78選擇一個容器執行一下ifconfig 查看ip 一般都是同網段中遞增的pc@pc-ThinkPad:~$ sudo docker exec 6306bf3057f8ebca79d7bd130ba35e260da7177925a85a1c9a3d5d21c551e0aa ifconfigeth0      Link encap:Ethernet  HWaddr 02:42:ac:11:00:01            inet addr:172.17.0.1  Bcast:0.0.0.0  Mask:255.255.0.0          inet6 addr: fe80::42:acff:fe11:1/64 Scope:Link          UP BROADCAST RUNNING  MTU:1500  Metric:1          RX packets:26 errors:0 dropped:0 overruns:0 frame:0          TX packets:10 errors:0 dropped:0 overruns:0 carrier:0          collisions:0 txqueuelen:0           RX bytes:2124 (2.1 KB)  TX bytes:828 (828.0 B)lo        Link encap:Local Loopback            inet addr:127.0.0.1  Mask:255.0.0.0          inet6 addr: ::1/128 Scope:Host          UP LOOPBACK RUNNING  MTU:65536  Metric:1          RX packets:0 errors:0 dropped:0 overruns:0 frame:0          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0          collisions:0 txqueuelen:0           RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)可以想象 3個容器的ip應該是172.17.0.1 172.17.0.2 172.17.0.3查看啟動並執行容器pc@pc-ThinkPad:~$ sudo docker ps -aCONTAINER ID        IMAGE               COMMAND                CREATED              STATUS              PORTS                              NAMEScebebc142a1b        pc/mongod:master    "usr/bin/mongod --no   About a minute ago   Up About a minute   22/tcp, 0.0.0.0:23117->27017/tcp   rs_server3          b60c977313e1        pc/mongod:master    "usr/bin/mongod --no   About a minute ago   Up About a minute   22/tcp, 0.0.0.0:22117->27017/tcp   rs_server2          6306bf3057f8        pc/mongod:master    "usr/bin/mongod --no   About a minute ago   Up About a minute   22/tcp, 0.0.0.0:21117->27017/tcp   rs_server1   從上述資訊可以看出原生21117 22117 23117  映射到docker的容器的連接埠上去了使用本機mongo用戶端串連到21117      pc@pc-ThinkPad:~$ mongo --port 21117MongoDB shell version: 3.0.4connecting to: 127.0.0.1:21117/test開始配置 複製集的成員資訊> myconf = {"_id":"rs1","members":[... {"_id":0,"host":"172.17.0.1:27017"},... {"_id":1,"host":"172.17.0.2:27017"},... {"_id":2,"host":"172.17.0.3:27017"}... ]... }{    "_id" : "rs1",    "members" : [        {            "_id" : 0,            "host" : "172.17.0.1:27017"        },        {            "_id" : 1,            "host" : "172.17.0.2:27017"        },        {            "_id" : 2,            "host" : "172.17.0.3:27017"        }    ]}初始化同步複製叢集> rs.initiate(myconf){ "ok" : 1 }查看當前複製集的節點資訊rs1:OTHER> rs.isMaster(){    "setName" : "rs1",    "setVersion" : 1,    "ismaster" : true,    "secondary" : false,    "hosts" : [        "172.17.0.1:27017",        "172.17.0.2:27017",        "172.17.0.3:27017"    ],    "primary" : "172.17.0.1:27017",    "me" : "172.17.0.1:27017",    "electionId" : ObjectId("55a5cc505f7c25c88ad58e77"),    "maxBsonObjectSize" : 16777216,    "maxMessageSizeBytes" : 48000000,    "maxWriteBatchSize" : 1000,    "localTime" : ISODate("2015-07-15T02:58:30.831Z"),    "maxWireVersion" : 3,    "minWireVersion" : 0,    "ok" : 1}可以看出串連到的容器ip是172.17.0.1  也可以看見誰是主節點rs1:PRIMARY> rs.status(){    "set" : "rs1",    "date" : ISODate("2015-07-15T02:58:44.390Z"),    "myState" : 1,    "members" : [        {            "_id" : 0,            "name" : "172.17.0.1:27017",            "health" : 1,            "state" : 1,            "stateStr" : "PRIMARY",            "uptime" : 540,            "optime" : Timestamp(1436929097, 1),            "optimeDate" : ISODate("2015-07-15T02:58:17Z"),            "electionTime" : Timestamp(1436929104, 1),            "electionDate" : ISODate("2015-07-15T02:58:24Z"),            "configVersion" : 1,            "self" : true        },        {            "_id" : 1,            "name" : "172.17.0.2:27017",            "health" : 1,            "state" : 2,            "stateStr" : "SECONDARY",            "uptime" : 57,            "optime" : Timestamp(1436929097, 1),            "optimeDate" : ISODate("2015-07-15T02:58:17Z"),            "lastHeartbeat" : ISODate("2015-07-15T02:58:44.133Z"),            "lastHeartbeatRecv" : ISODate("2015-07-15T02:58:44.133Z"),            "pingMs" : 0,            "configVersion" : 1        },        {            "_id" : 2,            "name" : "172.17.0.3:27017",            "health" : 1,            "state" : 2,            "stateStr" : "SECONDARY",            "uptime" : 57,            "optime" : Timestamp(1436929097, 1),            "optimeDate" : ISODate("2015-07-15T02:58:17Z"),            "lastHeartbeat" : ISODate("2015-07-15T02:58:43.169Z"),            "lastHeartbeatRecv" : ISODate("2015-07-15T02:58:44.134Z"),            "pingMs" : 0,            "lastHeartbeatMessage" : "could not find member to sync from",            "configVersion" : 1        }    ],    "ok" : 1}rs1:PRIMARY> rs.conf(){    "_id" : "rs1",    "version" : 1,    "members" : [        {            "_id" : 0,            "host" : "172.17.0.1:27017",            "arbiterOnly" : false,            "buildIndexes" : true,            "hidden" : false,            "priority" : 1,            "tags" : {            },            "slaveDelay" : 0,            "votes" : 1        },        {            "_id" : 1,            "host" : "172.17.0.2:27017",            "arbiterOnly" : false,            "buildIndexes" : true,            "hidden" : false,            "priority" : 1,            "tags" : {            },            "slaveDelay" : 0,            "votes" : 1        },        {            "_id" : 2,            "host" : "172.17.0.3:27017",            "arbiterOnly" : false,            "buildIndexes" : true,            "hidden" : false,            "priority" : 1,            "tags" : {            },            "slaveDelay" : 0,            "votes" : 1        }    ],    "settings" : {        "chainingAllowed" : true,        "heartbeatTimeoutSecs" : 10,        "getLastErrorModes" : {        },        "getLastErrorDefaults" : {            "w" : 1,            "wtimeout" : 0        }    }}另外開一個終端 串連到第二個容器pc@pc-ThinkPad:~$ mongo --port 22117MongoDB shell version: 3.0.4rs1:SECONDARY> rs.isMaster(){    "setName" : "rs1",    "setVersion" : 1,    "ismaster" : false,    "secondary" : true,    "hosts" : [        "172.17.0.1:27017",        "172.17.0.2:27017",        "172.17.0.3:27017"    ],    "primary" : "172.17.0.1:27017",    "me" : "172.17.0.2:27017",    "maxBsonObjectSize" : 16777216,    "maxMessageSizeBytes" : 48000000,    "maxWriteBatchSize" : 1000,    "localTime" : ISODate("2015-07-15T02:59:27.121Z"),    "maxWireVersion" : 3,    "minWireVersion" : 0,    "ok" : 1}可以看到主節點的資訊 和上個容器的資訊一致rs1:SECONDARY> rs.status(){    "set" : "rs1",    "date" : ISODate("2015-07-15T03:14:10.512Z"),    "myState" : 2,    "members" : [        {            "_id" : 0,            "name" : "172.17.0.1:27017",            "health" : 1,            "state" : 1,            "stateStr" : "PRIMARY",            "uptime" : 981,            "optime" : Timestamp(1436929097, 1),            "optimeDate" : ISODate("2015-07-15T02:58:17Z"),            "lastHeartbeat" : ISODate("2015-07-15T03:14:10.478Z"),            "lastHeartbeatRecv" : ISODate("2015-07-15T03:14:10.478Z"),            "pingMs" : 0,            "electionTime" : Timestamp(1436929104, 1),            "electionDate" : ISODate("2015-07-15T02:58:24Z"),            "configVersion" : 1        },        {            "_id" : 1,            "name" : "172.17.0.2:27017",            "health" : 1,            "state" : 2,            "stateStr" : "SECONDARY",            "uptime" : 1452,            "optime" : Timestamp(1436929097, 1),            "optimeDate" : ISODate("2015-07-15T02:58:17Z"),            "infoMessage" : "could not find member to sync from",            "configVersion" : 1,            "self" : true        },        {            "_id" : 2,            "name" : "172.17.0.3:27017",            "health" : 1,            "state" : 2,            "stateStr" : "SECONDARY