服务器信息
| ip | 系统 | 配置 | 服务 | 目录 |
|---|---|---|---|---|
| 172.24.32.201 | centos7.7 | 2c4g | mongo-primary | /var/lib/mongo (the data directory) /var/log/mongodb (the log directory) |
| 172.24.32.201 | centos7.7 | 2c4g | mongo-secondary | /var/lib/mongo27018 (the data directory) /var/log/mongodb27018 (the log directory) |
| 172.24.32.201 | centos7.7 | 2c4g | mongo-abiter | /var/lib/mongo27019 (the data directory) /var/log/mongodb27019 (the log directory) |
创建新的mongo实例，27019，具体文档参考mongo单点升级成单节点副本
这里直接贴出指令：
mkdir -p /var/log/mongodb27019/
mkdir -p /var/lib/mongo27019
chown mongod:mongod /var/log/mongodb27019/ &&chmod 0755 /var/log/mongodb27019/
chown mongod:mongod /var/lib/mongo27019/ &&chmod 0755 /var/lib/mongo27019/
-------------------------------------------------------------------------
cat >>/etc/mongod27019.conf<>/usr/lib/systemd/system/mongod27019.service< 启动并且开机自启动
systemctl daemon-reload
systemctl start mongod27019
systemctl enable mongod27019
添加仲裁
进入mongo27017（primary节点）
添加仲裁
rs.addArb('172.24.32.201:27019')
结果如下：
lugotestrepl:PRIMARY> db.auth('admin','test123')
1
lugotestrepl:PRIMARY> rs.addArb('172.24.32.201:27019')
{ "ok" : 1 }
查看副本集拓扑结构
rs.status()
lugotestrepl:PRIMARY> rs.status()
{
"set" : "lugotestrepl",
"date" : ISODate("2020-05-14T08:10:49.745Z"),
"myState" : 1,
"term" : NumberLong(2),
"syncingTo" : "",
"syncSourceHost" : "",
"syncSourceId" : -1,
"heartbeatIntervalMillis" : NumberLong(2000),
"optimes" : {
"lastCommittedOpTime" : {
"ts" : Timestamp(1589443843, 1),
"t" : NumberLong(2)
},
"appliedOpTime" : {
"ts" : Timestamp(1589443843, 1),
"t" : NumberLong(2)
},
"durableOpTime" : {
"ts" : Timestamp(1589443843, 1),
"t" : NumberLong(2)
}
},
"members" : [
{
"_id" : 0,
"name" : "172.24.32.201:27017",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 3989,
"optime" : {
"ts" : Timestamp(1589443843, 1),
"t" : NumberLong(2)
},
"optimeDate" : ISODate("2020-05-14T08:10:43Z"),
"syncingTo" : "",
"syncSourceHost" : "",
"syncSourceId" : -1,
"infoMessage" : "",
"electionTime" : Timestamp(1589439871, 1),
"electionDate" : ISODate("2020-05-14T07:04:31Z"),
"configVersion" : 3,
"self" : true,
"lastHeartbeatMessage" : ""
},
{
"_id" : 1,
"name" : "172.24.32.201:27018",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 3978,
"optime" : {
"ts" : Timestamp(1589443843, 1),
"t" : NumberLong(2)
},
"optimeDurable" : {
"ts" : Timestamp(1589443843, 1),
"t" : NumberLong(2)
},
"optimeDate" : ISODate("2020-05-14T08:10:43Z"),
"optimeDurableDate" : ISODate("2020-05-14T08:10:43Z"),
"lastHeartbeat" : ISODate("2020-05-14T08:10:49.635Z"),
"lastHeartbeatRecv" : ISODate("2020-05-14T08:10:49.672Z"),
"pingMs" : NumberLong(0),
"lastHeartbeatMessage" : "",
"syncingTo" : "172.24.32.201:27017",
"syncSourceHost" : "172.24.32.201:27017",
"syncSourceId" : 0,
"infoMessage" : "",
"configVersion" : 3
},
{
"_id" : 2,
"name" : "172.24.32.201:27019",
"health" : 1,
"state" : 7,
"stateStr" : "ARBITER",
"uptime" : 78,
"lastHeartbeat" : ISODate("2020-05-14T08:10:49.635Z"),
"lastHeartbeatRecv" : ISODate("2020-05-14T08:10:46.739Z"),
"pingMs" : NumberLong(0),
"lastHeartbeatMessage" : "",
"syncingTo" : "",
"syncSourceHost" : "",
"syncSourceId" : -1,
"infoMessage" : "",
"configVersion" : 3
}
],
"ok" : 1
}
验证数据可用性，插入一条数据，并且查看所有数据
lugotestrepl:PRIMARY> use lugotest;
switched to db lugotest
lugotestrepl:PRIMARY> db.auth('lugo','test123')
1
lugotestrepl:PRIMARY> show collections;
movie
lugotestrepl:PRIMARY> db.movie.insert({"moviename":"杀死比尔","points":"9.0"});
查看
lugotestrepl:PRIMARY> db.movie.find().pretty()
{
"_id" : ObjectId("5ebbbca5692adbface98b2af"),
"moviename" : "大侦探福尔摩斯",
"points" : "9.5"
}
{
"_id" : ObjectId("5ebbbca5692adbface98b2b0"),
"moviename" : "掠夺",
"points" : "9.2"
}
{
"_id" : ObjectId("5ebbbca5692adbface98b2b1"),
"moviename" : "摇滚黑帮",
"points" : "9.9"
}
{
"_id" : ObjectId("5ebbbca5692adbface98b2b2"),
"moviename" : "两杆大烟枪",
"points" : "9.1"
}
{
"_id" : ObjectId("5ebcff34df72ed1bb0505234"),
"moviename" : "杀死比尔",
"points" : "9.0"
}
去secondary节点查看数据
lugotestrepl:SECONDARY> rs.slaveOk();
lugotestrepl:SECONDARY> db.auth('lugo','test123')
1
lugotestrepl:SECONDARY> db.movie.find().pretty()
{
"_id" : ObjectId("5ebbbca5692adbface98b2af"),
"moviename" : "大侦探福尔摩斯",
"points" : "9.5"
}
{
"_id" : ObjectId("5ebbbca5692adbface98b2b0"),
"moviename" : "掠夺",
"points" : "9.2"
}
{
"_id" : ObjectId("5ebbbca5692adbface98b2b1"),
"moviename" : "摇滚黑帮",
"points" : "9.9"
}
{
"_id" : ObjectId("5ebbbca5692adbface98b2b2"),
"moviename" : "两杆大烟枪",
"points" : "9.1"
}
{
"_id" : ObjectId("5ebcff34df72ed1bb0505234"),
"moviename" : "杀死比尔",
"points" : "9.0"
}
数据一致