docker搭建mongodb分片集群
作者：互联网
准备好mongodb镜像，网络，keyfile文件，在基础镜像mongo的基础上创建包含keyfile文件的镜像mongo:v1
目标是搭建一个6节点的分片集群，该集群由两个副本集构成，包括：一个配置服务器副本集（三节点），一个分片副本集（三节点），一个mongos
创建配置服务器副本集节点：
docker run -d --name mongo-cfg01 --network 10.0.0.0/24 --ip 10.0.0.211 -v /root/keyfile:/etc/keyfile -e MONGO_INITDB_ROOT_USERNAME=admin -e MONGO_INITDB_ROOT_PASSWORD=123.com mongo:v1 mongod --configsvr --replSet "cluster01" --bind_ip_all --keyFile /etc/keyfile docker run -d --name mongo-cfg02 --network 10.0.0.0/24 --ip 10.0.0.212 -v /root/keyfile:/etc/keyfile -e MONGO_INITDB_ROOT_USERNAME=admin -e MONGO_INITDB_ROOT_PASSWORD=123.com mongo:v1 mongod --configsvr --replSet "cluster01" --bind_ip_all --keyFile /etc/keyfile docker run -d --name mongo-cfg03 --network 10.0.0.0/24 --ip 10.0.0.213 -v /root/keyfile:/etc/keyfile -e MONGO_INITDB_ROOT_USERNAME=admin -e MONGO_INITDB_ROOT_PASSWORD=123.com mongo:v1 mongod --configsvr --replSet "cluster01" --bind_ip_all --keyFile /etc/keyfile
进入任一节点，比如，mongo-cfg01
连接数据库
mongo --port 27019 -u admin
初始化配置服务器副本集
rs.initiate(
{
_id: "cluster01",
configsvr: true,
members: [
{ _id : 0, host : "10.0.0.211:27019" },
{ _id : 1, host : "10.0.0.212:27019" },
{ _id : 2, host : "10.0.0.213:27019" }
]
}
)结果：
{
"ok" : 1,
"$gleStats" : {
"lastOpTime" : Timestamp(1619790210, 1),
"electionId" : ObjectId("000000000000000000000000")
},
"lastCommittedOpTime" : Timestamp(0, 0)
}然后，使用rs.conf(),rs.status()等等查看副本集状态
创建分片副本集：
docker run -d --name mongo-rep01 --network 10.0.0.0/24 --ip 10.0.0.221 -v /root/keyfile:/etc/keyfile -e MONGO_INITDB_ROOT_USERNAME=admin -e MONGO_INITDB_ROOT_PASSWORD=123.com mongo:v1 mongod --shardsvr --replSet "cluster01" --bind_ip_all --keyFile /etc/keyfile docker run -d --name mongo-rep02 --network 10.0.0.0/24 --ip 10.0.0.222 -v /root/keyfile:/etc/keyfile -e MONGO_INITDB_ROOT_USERNAME=admin -e MONGO_INITDB_ROOT_PASSWORD=123.com mongo:v1 mongod --shardsvr --replSet "cluster01" --bind_ip_all --keyFile /etc/keyfile docker run -d --name mongo-rep03 --network 10.0.0.0/24 --ip 10.0.0.223 -v /root/keyfile:/etc/keyfile -e MONGO_INITDB_ROOT_USERNAME=admin -e MONGO_INITDB_ROOT_PASSWORD=123.com mongo:v1 mongod --shardsvr --replSet "cluster01" --bind_ip_all --keyFile /etc/keyfile
进入任一节点，比如：mongo-rep01，连接数据库
mongo --port 27018 -u admin
初始化分片副本集
rs.initiate(
{
_id : "cluster01",
members: [
{ _id : 0, host : "10.0.0.221:27018" },
{ _id : 1, host : "10.0.0.222:27018" },
{ _id : 2, host : "10.0.0.223:27018" }
]
}
)结果：
{ "ok" : 1 }为集群启动一个mongos
mongos --configdb cfg/10.0.0.211:27019,10.0.0.212:27019,10.0.0.213:27019 --keyFile /etc/keyfile
结果滚动显示如下内容：
{"t":{"$date":"2021-04-30T15:00:27.378+00:00"},"s":"I", "c":"SH_REFR", "id":24105, "ctx":"ConfigServerCatalogCacheLoader-1","msg":"Collection has found to be unsharded after refresh","attr":{"namespace":"config.system.sessions","durationMillis":0}}
{"t":{"$date":"2021-04-30T15:00:27.379+00:00"},"s":"I", "c":"CONTROL", "id":20714, "ctx":"LogicalSessionCacheRefresh","msg":"Failed to refresh session cache, will try again at the next refresh interval","attr":{"error":"NamespaceNotSharded: Collection config.system.sessions is not sharded."}}
{"t":{"$date":"2021-04-30T15:00:27.379+00:00"},"s":"I", "c":"SH_REFR", "id":24105, "ctx":"ConfigServerCatalogCacheLoader-1","msg":"Collection has found to be unsharded after refresh","attr":{"namespace":"config.system.sessions","durationMillis":0}}
{"t":{"$date":"2021-04-30T15:00:27.380+00:00"},"s":"I", "c":"CONTROL", "id":20712, "ctx":"LogicalSessionCacheReap","msg":"Sessions collection is not set up; waiting until next sessions reap interval","attr":{"error":"NamespaceNotSharded: Collection config.system.sessions is not sharded."}}
{"t":{"$date":"2021-04-30T15:00:35.473+00:00"},"s":"I", "c":"SHARDING", "id":20997, "ctx":"Uptime-reporter","msg":"Refreshed RWC defaults","attr":{"newDefaults":{}}}
{"t":{"$date":"2021-04-30T15:00:45.994+00:00"},"s":"I", "c":"SHARDING", "id":20997, "ctx":"Uptime-reporter","msg":"Refreshed RWC defaults","attr":{"newDefaults":{}}}
{"t":{"$date":"2021-04-30T15:00:57.478+00:00"},"s":"I", "c":"SHARDING", "id":20997, "ctx":"Uptime-reporter","msg":"Refreshed RWC defaults","attr":{"newDefaults":{}}}添加分片集到集群
通过mongo连接到运行mongos的节点，连接数据库，并执行如下命令添加分片集到集群：
sh.addShard( "cluster01/10.0.0.221:27018,10.0.0.222:27018,10.0.0.223:27018")
结果：
mongos> sh.addShard( "cluster01/10.0.0.221:27018,10.0.0.222:27018,10.0.0.223:27018")
{
"shardAdded" : "cluster01",
"ok" : 1,
"operationTime" : Timestamp(1619794806, 3),
"$clusterTime" : {
"clusterTime" : Timestamp(1619794806, 3),
"signature" : {
"hash" : BinData(0,"LfNdXcSRkS5TyA1rh9qJrdZzOt0="),
"keyId" : NumberLong("6956960684298993673")
}
}
}查看分片集状态：
mongos> sh.status()
--- Sharding Status ---
sharding version: {
"_id" : 1,
"minCompatibleVersion" : 5,
"currentVersion" : 6,
"clusterId" : ObjectId("608c16e2c27b8b7491ff6915")
}
shards:
{ "_id" : "cluster01", "host" : "cluster01/10.0.0.221:27018,10.0.0.222:27018,10.0.0.223:27018", "state" : 1 }
active mongoses:
"4.4.5" : 1
autosplit:
Currently enabled: yes
balancer:
Currently enabled: yes
Currently running: no
Failed balancer rounds in last 5 attempts: 0
Migration Results for the last 24 hours:
No recent migrations
databases:
{ "_id" : "config", "primary" : "config", "partitioned" : true }
config.system.sessions
shard key: { "_id" : 1 }
unique: false
balancing: true
chunks:
cluster01 1024
too many chunks to print, use verbose if you want to force print标签：10.0,00,mongo,--,mongodb,分片,docker,keyfile,id 来源： https://blog.51cto.com/u_3823536/2748183