准备工作
在CentOS 7 上安装MongoDB分片集群
6 Servers 代表：6台服务器上都要操作.
环境准备 On 6 Servers
给虚拟机设置静态IP
vi /etc/sysconfig/network-scripts/ifcfg-enp0s3
修改以下
#BOOTPROTO=“dhcp”
BOOTPROTO=“static”
IPADDR=“.xx.xx.xx.xx”
NETMASK=“255.255.255.0”
GATEWAY=“.xx.xx.xx.xx”
DNS1=“.xx.xx.xx.xx”
systemctl restart network
reboot
如果连不上外网，可以尝试断开虚拟机的网络，再重新连接
ssh-keygen
ssh-copy-id -i ~/.ssh/id_rsa.pub root@xx.xx.xx.24
ssh-copy-id -i ~/.ssh/id_rsa.pub root@xx.xx.xx.71
ssh-copy-id -i ~/.ssh/id_rsa.pub root@xx.xx.xx.73
ssh-copy-id -i ~/.ssh/id_rsa.pub root@xx.xx.xx.74
ssh-copy-id -i ~/.ssh/id_rsa.pub root@xx.xx.xx.75
ssh-copy-id -i ~/.ssh/id_rsa.pub root@xx.xx.xx.76
[root@mongo1 ~]# getenforce
Enforcing
[root@mongo1 ~]# sudo setenforce 0
[root@mongo1 lib]# vi /etc/selinux/config
SELINUX=disabled
systemctl stop firewalld
systemctl disable firewalld
sudo shutdown -r now
开始安装MongoDB On 6 Servers
[root@mongo1 ~]# sudo yum -y install libcurl openssl
[root@mongo1 ~]# curl -O https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-rhel70-4.2.6.tgz
[root@mongo1 ~]# tar -zxvf mongodb-linux-*-4.2.6.tgz
[root@mongo1 ~]# adduser mongod
[root@mongo1 ~]# passwd mongod
为服务器设置域名 On 6 Servers
我们将使用域名来搭建分片集。使用域名也是搭建MongoDB集群的推荐方式，它在以后发生迁移时将带来很多便利。
vi /etc/hosts
xx.xx.xx.24 mongod1 member1.mongod.com
xx.xx.xx.71 mongod2 member2.mongod.com
xx.xx.xx.73 mongod3 member3.mongod.com
xx.xx.xx.74 mongod4 member4.mongod.com
xx.xx.xx.75 mongod5 member5.mongod.com
xx.xx.xx.76 mongod6 member6.mongod.com
服务器分工
在本例中，我们将使用:
member1/member3/member5搭建shard1和configmember2/member4/member6搭建shard2和mongos
| member1 | member2 | member3 | member4 | member5 | member6 | |
|---|---|---|---|---|---|---|
| shard1 | ✓ | ✓ | ✓ | |||
| shard2 | ✓ | ✓ | ✓ | |||
| config | ✓ | ✓ | ✓ | |||
| mongos | ✓ | ✓ | ✓ |
准备分片目录
在各服务器上创建数据目录，我们使用/data，请按自己需要修改为其他目录：
在
member1/member3/member5上执行以下命令：mkdir -p /var/lib/mongo/shard1/ mkdir -p /var/lib/mongo/config/在
member2/member4/member6上执行以下命令：mkdir -p /var/lib/mongo/shard2/ mkdir -p /var/lib/mongo/mongos/
sudo chown -R mongod:mongod /var/lib/mongo
Ensure the binaries are in a directory listed in your PATH environment variable.
sudo cp /root/mongodb-linux-x86_64-rhel70-4.2.6/bin/* /usr/local/bin/
搭建分片
搭建shard1
在member1/member3/member5上执行以下命令。注意以下参数：
shardsvr: 表示这不是一个普通的复制集，而是分片集的一部分；wiredTigerCacheSizeGB: 该参数表示MongoDB能够使用的缓存大小。默认值为(RAM - 1GB) / 2。- 不建议配置超过默认值，有OOM的风险；
- 因为我们当前测试会在一台服务器上运行多个实例，因此配置了较小的值；
bind_ip: 生产环境中强烈建议不要绑定外网IP，此处为了方便演示绑定了所有IP地址。类似的道理，生产环境中应开启认证--auth，此处为演示方便并未使用；
mongod --bind_ip 0.0.0.0 --replSet shard1 --dbpath /var/lib/mongo/shard1 --logpath /var/lib/mongo/shard1/mongod.log --port 27010 --fork --shardsvr --wiredTigerCacheSizeGB 1
用这三个实例搭建shard1复制集：
任意连接到一个实例，例如我们连接到
member1.example.com：mongo --host member1.mongod.com:27010初始化
shard1复制集。我们使用如下配置初始化复制集：rs.initiate({ _id: "shard1", "members" : [ { "_id": 0, "host" : "member1.mongod.com:27010" }, { "_id": 1, "host" : "member3.mongod.com:27010" }, { "_id": 2, "host" : "member5.mongod.com:27010" } ] });查看初始化复制集状态：
rs.status()
搭建config
与shard1类似的方式，我们可以搭建config服务器。在member1/member3/member5上执行以下命令：
运行
config实例：mongod --bind_ip 0.0.0.0 --replSet config --dbpath /var/lib/mongo/config --logpath /var/lib/mongo/config/mongod.log --port 27019 --fork --configsvr --wiredTigerCacheSizeGB 1连接到
member1：mongo --host member1.mongod.com:27019初始化
config复制集：rs.initiate({ _id: "config", "members" : [ { "_id": 0, "host" : "member1.mongod.com:27019" }, { "_id": 1, "host" : "member3.mongod.com:27019" }, { "_id": 2, "host" : "member5.mongod.com:27019" } ] });查看初始化
config复制集状态：rs.status()
搭建mongos
mongos的搭建比较简单，我们在member2/member4/member6上搭建3个mongos。注意以下参数：
configdb: 表示config使用的集群地址；
开始搭建：
运行mongos进程：
mongos --bind_ip 0.0.0.0 --logpath /var/lib/mongo/mongos/mongos.log --port 27017 --configdb config/member1.mongod.com:27019,member3.mongod.com:27019,mongod.example.com:27019 --fork连接到任意一个mongos，此处我们使用
member2：mongo --host member2.mongod.com:27017将
shard1加入到集群中：sh.addShard("shard1/member1.mongod.com:27010,member3.mongod.com:27010,member5.mongod.com:27010");查看
shard1复制集状态：sh.status()
测试分片集
上述示例中我们搭建了一个只有1个分片的分片集。在继续之前我们先来测试一下这个分片集。
连接到分片集：
mongo --host member2.mongod.com:27017sh.status();mongos> sh.status() --- Sharding Status --- sharding version: { "_id" : 1, "minCompatibleVersion" : 5, "currentVersion" : 6, "clusterId" : ObjectId("5eb6523ae71638d514e84f79") } shards: { "_id" : "shard1", "host" : "shard1/member1.mongod.com:27010,member3.mongod.com:27010,member5.mongod.com:27010", "state" : 1 } active mongoses: "4.2.6" : 3 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 }创建一个分片表：
sh.enableSharding("foo"); sh.shardCollection("foo.bar", {_id: 'hashed'}); sh.status();... { "_id" : "foo", "primary" : "shard1", "partitioned" : true, "version" : { "uuid" : UUID("838293c5-f083-4a3b-b75e-548cfe2f6087"), "lastMod" : 1 } } foo.bar shard key: { "_id" : "hashed" } unique: false balancing: true chunks: shard1 2 { "_id" : { "$minKey" : 1 } } -->> { "_id" : NumberLong(0) } on : shard1 Timestamp(1, 0) { "_id" : NumberLong(0) } -->> { "_id" : { "$maxKey" : 1 } } on : shard1 Timestamp(1, 1)任意写入若干数据：
use foo for (var i = 0; i < 10000; i++) { db.bar.insert({i: i}); } sh.status()
--- Sharding Status ---
sharding version: {
"_id" : 1,
"minCompatibleVersion" : 5,
"currentVersion" : 6,
"clusterId" : ObjectId("5eb6523ae71638d514e84f79")
}
shards:
{ "_id" : "shard1", "host" : "shard1/member1.mongod.com:27010,member3.mongod.com:27010,member5.mongod.com:27010", "state" : 1 }
active mongoses:
"4.2.6" : 3
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:
shard1 1
{ "_id" : { "$minKey" : 1 } } -->> { "_id" : { "$maxKey" : 1 } } on : shard1 Timestamp(1, 0)
{ "_id" : "foo", "primary" : "shard1", "partitioned" : true, "version" : { "uuid" : UUID("48bd1e44-b995-4ebb-bb82-b379ca38ef2a"), "lastMod" : 1 } }
foo.bar
shard key: { "_id" : "hashed" }
unique: false
balancing: true
chunks:
shard1 2
{ "_id" : { "$minKey" : 1 } } -->> { "_id" : NumberLong(0) } on : shard1 Timestamp(1, 0)
{ "_id" : NumberLong(0) } -->> { "_id" : { "$maxKey" : 1 } } on : shard1 Timestamp(1, 1)
向分片集加入新的分片
下面我们搭建shard2并将其加入分片集中，观察发生的效果。
使用类似shard1的方式搭建shard2。在member2/member4/member6上执行以下命令：
mongod --bind_ip 0.0.0.0 --replSet shard2 --dbpath /var/lib/mongo/shard2 --logpath /var/lib/mongo/shard2/mongod.log --port 27010 --fork --shardsvr --wiredTigerCacheSizeGB 1
用这三个实例搭建shard2复制集：
任意连接到一个实例，例如我们连接到
member2.mongod.com：mongo --host member2.mongod.com:27010初始化
shard2复制集。我们使用如下配置初始化复制集：rs.initiate({ _id: "shard2", "members" : [ { "_id": 0, "host" : "member2.mongod.com:27010" }, { "_id": 1, "host" : "member4.mongod.com:27010" }, { "_id": 2, "host" : "member6.mongod.com:27010" } ] }); rs.status() members里面看到primary就选举成功了连接到任意一个mongos。此处使用
member1：mongo --host member2.mongod.com:27017将
shard2加入到集群中：sh.addShard("shard2/member2.mongod.com:27010,member4.mongod.com:27010,member6.mongod.com:27010");{ "shardAdded" : "shard2", "ok" : 1, "operationTime" : Timestamp(1577498687, 6), "$clusterTime" : { "clusterTime" : Timestamp(1577498687, 6), "signature" : { "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="), "keyId" : NumberLong(0) } } }观察
sh.status()：sh.status();... { "_id" : "foo", "primary" : "shard1", "partitioned" : true, "version" : { "uuid" : UUID("838293c5-f083-4a3b-b75e-548cfe2f6087"), "lastMod" : 1 } } foo.bar shard key: { "_id" : "hashed" } unique: false balancing: true chunks: shard1 1 shard2 1 { "_id" : { "$minKey" : 1 } } -->> { "_id" : NumberLong(0) } on : shard2 Timestamp(2, 0) { "_id" : NumberLong(0) } -->> { "_id" : { "$maxKey" : 1 } } on : shard1 Timestamp(2, 1)
可以发现原本shard1上的两个chunk被均衡到了shard2上，这就是MongoDB的自动均衡机制。
其他参考
[root@mongod2 shard2]# netstat -anp | grep 27010
tcp 0 0 0.0.0.0:27010 0.0.0.0:* LISTEN 1731/mongod
tcp 0 0 xx.xx.xx.71:34664 xx.xx.xx.24:27010 ESTABLISHED 1678/mongos
tcp 0 0 xx.xx.xx.71:39040 xx.xx.xx.75:27010 ESTABLISHED 1678/mongos
tcp 0 0 xx.xx.xx.71:43050 xx.xx.xx.73:27010 ESTABLISHED 1678/mongos
unix 2 [ ACC ] STREAM LISTENING 20336 1731/mongod /tmp/mongodb-27010.sock
[root@mongod2 shard2]# netstat -anp | grep 27019
tcp 0 0 xx.xx.xx.71:40120 xx.xx.xx.24:27019 ESTABLISHED 1678/mongos
tcp 0 0 xx.xx.xx.71:49938 xx.xx.xx.75:27019 ESTABLISHED 1678/mongos
tcp 0 0 xx.xx.xx.71:49934 xx.xx.xx.75:27019 ESTABLISHED 1678/mongos
tcp 0 0 xx.xx.xx.71:40162 xx.xx.xx.24:27019 ESTABLISHED 1678/mongos
tcp 0 0 xx.xx.xx.71:37928 xx.xx.xx.73:27019 ESTABLISHED 1678/mongos
tcp 0 0 xx.xx.xx.71:37940 xx.xx.xx.73:27019 ESTABLISHED 1678/mongos
[root@mongod2 shard2]# netstat -anp | grep 27017
tcp 0 0 0.0.0.0:27017 0.0.0.0:* LISTEN 1678/mongos
unix 2 [ ACC ] STREAM LISTENING 19533 1678/mongos /tmp/mongodb-27017.sock
[root@mongod2 shard2]# netstat -pnltu
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1183/master
tcp 0 0 0.0.0.0:27010 0.0.0.0:* LISTEN 1731/mongod
tcp 0 0 0.0.0.0:27017 0.0.0.0:* LISTEN 1678/mongos
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1027/sshd
tcp6 0 0 ::1:25 :::* LISTEN 1183/master
tcp6 0 0 :::22 :::* LISTEN 1027/sshd
udp 0 0 0.0.0.0:68 0.0.0.0:* 1582/dhclient
[root@mongod2 shard2]# netstat -ant
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:27010 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:27017 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp 0 0 xx.xx.xx.71:40120 xx.xx.xx.24:27019 ESTABLISHED
tcp 0 0 xx.xx.xx.71:34664 xx.xx.xx.24:27010 ESTABLISHED
tcp 0 0 xx.xx.xx.71:49938 xx.xx.xx.75:27019 ESTABLISHED
tcp 0 0 xx.xx.xx.71:49934 xx.xx.xx.75:27019 ESTABLISHED
tcp 0 0 xx.xx.xx.71:22 10.20.45.99:62782 ESTABLISHED
tcp 0 0 xx.xx.xx.71:40162 xx.xx.xx.24:27019 ESTABLISHED
tcp 0 0 xx.xx.xx.71:39040 xx.xx.xx.75:27010 ESTABLISHED
tcp 0 0 xx.xx.xx.71:37928 xx.xx.xx.73:27019 ESTABLISHED
tcp 0 0 xx.xx.xx.71:37940 xx.xx.xx.73:27019 ESTABLISHED
tcp 0 0 xx.xx.xx.71:43050 xx.xx.xx.73:27010 ESTABLISHED
tcp 0 36 xx.xx.xx.71:22 10.20.45.99:65457 ESTABLISHED
tcp6 0 0 ::1:25 :::* LISTEN
tcp6 0 0 :::22 :::* LISTEN
为什么以下的各种方式登录mongo shell后的查询的结果都不一样呢，后面发现是初始化`shard2`复制集
[root@mongod2 shard2]# mongo localhost:27010
MongoDB shell version v4.2.6
connecting to: mongodb://localhost:27010/test?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("67c6510e-320d-4ded-9727-1134fb41684d") }
MongoDB server version: 4.2.6
Server has startup warnings:
2020-05-09T15:14:07.983+0800 I CONTROL [initandlisten]
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten]
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten]
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten]
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten]
---
Enable MongoDB's free cloud-based monitoring service, which will then receive and display
metrics about your deployment (disk utilization, CPU, operation statistics, etc).
The monitoring data will be available on a MongoDB website with a unique URL accessible to you
and anyone you share the URL with. MongoDB may use this information to make product
improvements and to suggest MongoDB products and deployment options to you.
To enable free monitoring, run the following command: db.enableFreeMonitoring()
To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
---
> show dbs
2020-05-09T15:55:52.626+0800 E QUERY [js] uncaught exception: Error: listDatabases failed:{
"operationTime" : Timestamp(0, 0),
"ok" : 0,
"errmsg" : "not master and slaveOk=false",
"code" : 13435,
"codeName" : "NotMasterNoSlaveOk",
"$clusterTime" : {
"clusterTime" : Timestamp(0, 0),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
} :
_getErrorWithCode@src/mongo/shell/utils.js:25:13
Mongo.prototype.getDBs/<@src/mongo/shell/mongo.js:135:19
Mongo.prototype.getDBs@src/mongo/shell/mongo.js:87:12
shellHelper.show@src/mongo/shell/utils.js:906:13
shellHelper@src/mongo/shell/utils.js:790:15
@(shellhelp2):1:1
> exit
bye
[root@mongod2 shard2]# mongo
MongoDB shell version v4.2.6
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("ee8647bc-d9e0-4082-8878-d1aa931538b6") }
MongoDB server version: 4.2.6
Server has startup warnings:
2020-05-09T14:51:35.994+0800 I CONTROL [main]
2020-05-09T14:51:35.994+0800 I CONTROL [main] ** WARNING: Access control is not enabled for the database.
2020-05-09T14:51:35.994+0800 I CONTROL [main] ** Read and write access to data and configuration is unrestricted.
2020-05-09T14:51:35.994+0800 I CONTROL [main] ** WARNING: You are running this process as the root user, which is not recommended.
2020-05-09T14:51:35.994+0800 I CONTROL [main]
mongos> show dbs
admin 0.000GB
config 0.001GB
foo 0.000GB
mongos>exit
bye
[root@mongod2 shard2]# mongo 127.0.0.1:27010
MongoDB shell version v4.2.6
connecting to: mongodb://127.0.0.1:27010/test?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("4e8766b3-a911-479a-b316-faaebeb20d91") }
MongoDB server version: 4.2.6
Server has startup warnings:
2020-05-09T15:14:07.983+0800 I CONTROL [initandlisten]
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten]
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten]
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten]
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten]
---
Enable MongoDB's free cloud-based monitoring service, which will then receive and display
metrics about your deployment (disk utilization, CPU, operation statistics, etc).
The monitoring data will be available on a MongoDB website with a unique URL accessible to you
and anyone you share the URL with. MongoDB may use this information to make product
improvements and to suggest MongoDB products and deployment options to you.
To enable free monitoring, run the following command: db.enableFreeMonitoring()
To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
---
> show dbs;
2020-05-09T16:00:02.809+0800 E QUERY [js] uncaught exception: Error: listDatabases failed:{
"operationTime" : Timestamp(0, 0),
"ok" : 0,
"errmsg" : "not master and slaveOk=false",
"code" : 13435,
"codeName" : "NotMasterNoSlaveOk",
"$clusterTime" : {
"clusterTime" : Timestamp(0, 0),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
} :
_getErrorWithCode@src/mongo/shell/utils.js:25:13
Mongo.prototype.getDBs/<@src/mongo/shell/mongo.js:135:19
Mongo.prototype.getDBs@src/mongo/shell/mongo.js:87:12
shellHelper.show@src/mongo/shell/utils.js:906:13
shellHelper@src/mongo/shell/utils.js:790:15
@(shellhelp2):1:1
>exit
bye
[root@mongod2 shard2]# mongo mongod2:27010
MongoDB shell version v4.2.6
connecting to: mongodb://mongod2:27010/test?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("6741d5fe-71fb-446d-a515-5787e6cd162d") }
MongoDB server version: 4.2.6
Server has startup warnings:
2020-05-09T15:14:07.983+0800 I CONTROL [initandlisten]
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten]
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten]
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten]
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten]
---
Enable MongoDB's free cloud-based monitoring service, which will then receive and display
metrics about your deployment (disk utilization, CPU, operation statistics, etc).
The monitoring data will be available on a MongoDB website with a unique URL accessible to you
and anyone you share the URL with. MongoDB may use this information to make product
improvements and to suggest MongoDB products and deployment options to you.
To enable free monitoring, run the following command: db.enableFreeMonitoring()
To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
---
> show dbs
2020-05-09T16:00:56.963+0800 E QUERY [js] uncaught exception: Error: listDatabases failed:{
"operationTime" : Timestamp(0, 0),
"ok" : 0,
"errmsg" : "not master and slaveOk=false",
"code" : 13435,
"codeName" : "NotMasterNoSlaveOk",
"$clusterTime" : {
"clusterTime" : Timestamp(0, 0),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
} :
_getErrorWithCode@src/mongo/shell/utils.js:25:13
Mongo.prototype.getDBs/<@src/mongo/shell/mongo.js:135:19
Mongo.prototype.getDBs@src/mongo/shell/mongo.js:87:12
shellHelper.show@src/mongo/shell/utils.js:906:13
shellHelper@src/mongo/shell/utils.js:790:15
@(shellhelp2):1:1
> exit
bye
[root@mongod2 shard2]# mongo --port 27010
MongoDB shell version v4.2.6
connecting to: mongodb://127.0.0.1:27010/?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("f8595dca-1918-41c8-84e2-87ddb955f961") }
MongoDB server version: 4.2.6
Server has startup warnings:
2020-05-09T15:14:07.983+0800 I CONTROL [initandlisten]
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten]
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten]
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten]
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2020-05-09T15:14:07.984+0800 I CONTROL [initandlisten]
---
Enable MongoDB's free cloud-based monitoring service, which will then receive and display
metrics about your deployment (disk utilization, CPU, operation statistics, etc).
The monitoring data will be available on a MongoDB website with a unique URL accessible to you
and anyone you share the URL with. MongoDB may use this information to make product
improvements and to suggest MongoDB products and deployment options to you.
To enable free monitoring, run the following command: db.enableFreeMonitoring()
To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
---
> show dbs
2020-05-09T16:01:46.964+0800 E QUERY [js] uncaught exception: Error: listDatabases failed:{
"operationTime" : Timestamp(0, 0),
"ok" : 0,
"errmsg" : "not master and slaveOk=false",
"code" : 13435,
"codeName" : "NotMasterNoSlaveOk",
"$clusterTime" : {
"clusterTime" : Timestamp(0, 0),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
} :
_getErrorWithCode@src/mongo/shell/utils.js:25:13
Mongo.prototype.getDBs/<@src/mongo/shell/mongo.js:135:19
Mongo.prototype.getDBs@src/mongo/shell/mongo.js:87:12
shellHelper.show@src/mongo/shell/utils.js:906:13
shellHelper@src/mongo/shell/utils.js:790:15
@(shellhelp2):1:1
> exit;
bye
[root@mongod6 ~]# pgrep mongo -l
1671 mongos
1720 mongod
[root@mongod6 ~]# cat /var/lib/mongo/shard2/mongod.log
2020-05-09T16:22:03.590+0800 I CONTROL [main] Automatically disabling TLS 1.0, to force-enable TLS 1.0 specify --sslDisabledProtocols 'none'
2020-05-09T16:22:03.594+0800 W ASIO [main] No TransportLayer configured during NetworkInterface startup
2020-05-09T16:22:03.594+0800 I CONTROL [initandlisten] MongoDB starting : pid=1811 port=27010 dbpath=/var/lib/mongo/shard2 64-bit host=mongod6
2020-05-09T16:22:03.594+0800 I CONTROL [initandlisten] db version v4.2.6
2020-05-09T16:22:03.594+0800 I CONTROL [initandlisten] git version: 20364840b8f1af16917e4c23c1b5f5efd8b352f8
2020-05-09T16:22:03.594+0800 I CONTROL [initandlisten] OpenSSL version: OpenSSL 1.0.1e-fips 11 Feb 2013
2020-05-09T16:22:03.594+0800 I CONTROL [initandlisten] allocator: tcmalloc
2020-05-09T16:22:03.594+0800 I CONTROL [initandlisten] modules: none
2020-05-09T16:22:03.594+0800 I CONTROL [initandlisten] build environment:
2020-05-09T16:22:03.594+0800 I CONTROL [initandlisten] distmod: rhel70
2020-05-09T16:22:03.594+0800 I CONTROL [initandlisten] distarch: x86_64
2020-05-09T16:22:03.594+0800 I CONTROL [initandlisten] target_arch: x86_64
2020-05-09T16:22:03.594+0800 I CONTROL [initandlisten] options: { net: { bindIp: "0.0.0.0", port: 27010 }, processManagement: { fork: true }, replication: { replSet: "shard2" }, sharding: { clusterRole: "shardsvr" }, storage: { dbPath: "/var/lib/mongo/shard2", wiredTiger: { engineConfig: { cacheSizeGB: 1.0 } } }, systemLog: { destination: "file", path: "/var/lib/mongo/shard2/mongod.log" } }
2020-05-09T16:22:03.594+0800 E STORAGE [initandlisten] Failed to set up listener: SocketException: Address already in use
2020-05-09T16:22:03.594+0800 I CONTROL [initandlisten] now exiting
2020-05-09T16:22:03.594+0800 I CONTROL [initandlisten] shutting down with code:48
其他参考命令
pgrep mongo -l
ps -ef | grep mongod
mongo localhost:27010
sudo cp /root/mongodb-linux-x86_64-rhel70-4.2.6/bin/* /usr/local/bin/
sudo ln -s /root/mongodb-linux-x86_64-rhel70-4.2.6/bin/* /usr/local/bin/
export PATH=$PATH:/root/mongodb-linux-x86_64-rhel70-4.2.6/bin
直到出现primary
rs.status()
sh.status()
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