Docker----build mongodb cluster based on docker

docker build mongodb cluster

Three server addresses

service name	IP address	port
mongo1	172.17.3.135	27017
mongo2	172.17.3.123	27017
mongo3	172.17.3.99	27017

Create a configuration file

---

• Create a configuration file on the 135 server/qj/mongo1/conf/mongod.conf

• Create a configuration file on the 123 server/qj/mongo2/conf/mongod.conf

• Create a configuration file on the 99 server/qj/mongo3/conf/mongod.conf

---

mongo1Service configuration file /qj/mongo1/conf/mongod.conf

# mongod.conf

# for documentation of all options, see:
#   http://docs.mongodb.org/manual/reference/configuration-options/

# Where and how to store data.
storage:
dbPath: /data/db
journal:
  enabled: true
directoryPerDB: true
wiredTiger:
  engineConfig:
    cacheSizeGB: 1

#  engine:
#  mmapv1:
#  wiredTiger:

# where to write logging data.
systemLog:
destination: file
logAppend: true
path: /var/log/mongodb/mongod.log

# network interfaces
net:
port: 27017
bindIp: 0.0.0.0
# how the process runs
processManagement:
timeZoneInfo: /usr/share/zoneinfo

security:
keyFile: /data/db/keyfile

#operationProfiling:

replication:
replSetName: rs0
oplogSizeMB: 10000

#sharding:

## Enterprise-Only Options:

#auditLog:

#snmp:

Create keyfile

Generate keyfile:

openssl rand -base64 756 >  keyfile
# 阿里的服务器上可能用不了这条命令，建议在本地生成这个文件

Then put the generated code into the 135 server /qj/mongo1/data/db/keyfile, modify the permission to 600

chmod 600 /qj/mongo1/data/db/keyfile

create log file

sudo mkdir /qj/mongo1/log/
sudo touch /qj/mongo1/log/mongod.log
chmod 777 /qj/mongo1/log/mongod.log
# 这个容器，如果你启动失败，看不了日志文件，所以把它映射出来，方便查看问题。

135节点mongo1启动容器命令

 docker run -d --name mongo1 --restart=always \
-p 27017:27017 \
-v /qj/mongo1/conf/mongod.conf:/etc/mongod.conf:ro \
-v /qj/mongo1/data/db:/data/db:rw \
-v /qj/mongo1/log/mongod.log:/var/log/mongodb/mongod.log \
-v /etc/localtime:/etc/localtime:ro \
 registry-vpc.cn-beijing.aliyuncs.com/qianjia_public/mongo:4.0.5 \
 --replSet "rs0" --config /etc/mongod.conf

mongo2Service configuration file /qj/mongo2/conf/mongod.conf

# mongod.conf

# for documentation of all options, see:
#   http://docs.mongodb.org/manual/reference/configuration-options/

# Where and how to store data.
storage:
  dbPath: /data/db
  journal:
    enabled: true
  directoryPerDB: true
  wiredTiger:
    engineConfig:
      cacheSizeGB: 2

#  engine:
#  mmapv1:
#  wiredTiger:

# where to write logging data.
systemLog:
  destination: file
  logAppend: true
  path: /var/log/mongodb/mongod.log

# network interfaces
net:
  port: 27017
  bindIp: 0.0.0.0
# how the process runs
processManagement:
  timeZoneInfo: /usr/share/zoneinfo

security:
  keyFile: /data/db/keyfile

#operationProfiling:

replication:
  replSetName: rs0
  oplogSizeMB: 10000

#sharding:

## Enterprise-Only Options:

#auditLog:

#snmp:

Create keyfile

Generate keyfile:

openssl rand -base64 756 >  keyfile

Then put the generated code into the 123 server /qj/mongo2/data/db/keyfile, modify the permission to 600

chmod 600 /qj/mongo2/data/db/keyfile

create log file

sudo mkdir /qj/mongo2/log/
sudo touch /qj/mongo2/log/mongod.log
chmod 777 /qj/mongo2/log/mongod.log

123节点mongo2启动容器命令

 docker run -d --name mongo2 --restart=always \
-p 27017:27017 \
-v /qj/mongo2/conf/mongod.conf:/etc/mongod.conf:ro \
-v /qj/mongo2/data/db:/data/db:rw \
-v /qj/mongo2/log/mongod.log:/var/log/mongodb/mongod.log \
-v /etc/localtime:/etc/localtime:ro \
 registry-vpc.cn-beijing.aliyuncs.com/qianjia_public/mongo:4.0.5 \
 --replSet "rs0" --config /etc/mongod.conf

mongo3Service configuration file /qj/mongo3/conf/mongod.conf

# mongod.conf

# for documentation of all options, see:
#   http://docs.mongodb.org/manual/reference/configuration-options/

# Where and how to store data.
storage:
 dbPath: /data/db
 journal:
   enabled: true
 directoryPerDB: true
 wiredTiger:
   engineConfig:
     cacheSizeGB: 1

#  engine:
#  mmapv1:
#  wiredTiger:

# where to write logging data.
systemLog:
 destination: file
 logAppend: true
 path: /var/log/mongodb/mongod.log

# network interfaces
net:
 port: 27017
 bindIp: 0.0.0.0
# how the process runs
processManagement:
 timeZoneInfo: /usr/share/zoneinfo

security:
 keyFile: /data/db/keyfile

#operationProfiling:

replication:
 replSetName: rs0
 oplogSizeMB: 10000

#sharding:

## Enterprise-Only Options:

#auditLog:

#snmp:

Create keyfile

Generate keyfile:

openssl rand -base64 756 >  keyfile

Then put the generated code into the 99 server /qj/mongo3/data/db/keyfile, modify the permission to 600

chmod 600 /qj/mongo3/data/db/keyfile

create log file

sudo mkdir /qj/mongo3/log/
sudo touch /qj/mongo3/log/mongod.log
chmod 777 /qj/mongo3/log/mongod.log

99节点mongo3启动容器命令

  docker run -d --name mongo3 --restart=always \
-p 27017:27017 \
-v /qj/mongo3/conf/mongod.conf:/etc/mongod.conf:ro \
-v /qj/mongo3/data/db:/data/db:rw \
-v /qj/mongo3/log/mongod.log:/var/log/mongodb/mongod.log \
-v /etc/localtime:/etc/localtime:ro \
 registry-vpc.cn-beijing.aliyuncs.com/qianjia_public/mongo:4.0.5 \
 --replSet "rs0" --config /etc/mongod.conf

Create a cluster

Enter the container of 135 hosts and start mongo

docker exec -it mongo1 bash
mongo

Create a cluster

config = {
    
     _id:"rs0", members:[{
    
    _id:0,host:"172.17.3.135:27017"},{
    
    _id:1,host:"172.17.3.123:27017"},{
    
    _id:2,host:"172.17.3.99:27017"}]}

Cluster initialization

rs.initiate(config)

determine the master

rs.isMaster()

View cluster status

rs.status()

On the other two hosts, you need to confirm the slave before continuing to view. After entering the container and starting mongo

rs.slaveOk()

Create super administrator user

on the master node

use admin

db.createUser({user: "admin", pwd: "admin", roles:[{role:"root", db:"admin"}] })

After the super user is established, show dbsthe database cannot be displayed directly after starting or connecting to mongo at this time, and you need to log in first

db.auth("admin","admin")
再次
show dbs
即可显示所有数据库