MongoDB V3.6.15
我尝试设置具有1个主节点,1个辅助节点和1个仲裁器的副本集。连接到副本集时收到错误。 “ pymongo.errors.ServerSelectionTimeoutError:rep2:27017:[Errno 8]提供的节点名或服务名,或未知,rep1:27017:[Errno 8]提供的节点名或服务名,或未知,rep0:27017: [Errno 8]提供的节点名或服务名,或未知”
请在下面找到rs.config()的结果;
{ “ _id”:“ XXXXXXXXX”, “版本”:3, “ protocolVersion”:NumberLong(1), “成员”:[ { “ _id”:0, “主机”:“ rep0:27017”, “ arbiterOnly”:否, “ buildIndexes”:是的, “隐藏”:错误, “优先级”:1 “标签”:{
},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 1,
"host" : "rep1:27017",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 2,
"host" : "rep2:27017",
"arbiterOnly" : true,
"buildIndexes" : true,
"hidden" : false,
"priority" : 0,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
}
],
"settings" : {
"chainingAllowed" : true,
"heartbeatIntervalMillis" : 2000,
"heartbeatTimeoutSecs" : 10,
"electionTimeoutMillis" : 10000,
"catchUpTimeoutMillis" : -1,
"catchUpTakeoverDelayMillis" : 30000,
"getLastErrorModes" : {
},
"getLastErrorDefaults" : {
"w" : 1,
"wtimeout" : 0
},
"replicaSetId" : ObjectId("5dd267845cdd7ff56f6c0fe5")
}
}
我在配置副本集时做错了什么。
提前谢谢。
用于连接数据库的代码。
import os
import pymongo
import ssl
import urllib
MONGODB_URL="mongodb://user:"+urllib.quote("password")+"@rep0xxxxxxxxxx:27017,rep1xxxxxxxxxx:27017,rep2xxxxxxxxxx:27017/admin?ssl=false&replicaSet=replicaname"
client = pymongo.MongoClient(
MONGODB_URL
)
db = client.get_default_database()
print (db.collection_names())
Steps
1. Create 3 VMs on Azure Cloud in a same resource group
2. Install MongoDB 3.6.15 on all the Machines
3. Add User on the 3 machines.
db.createUser(
{
user: "xxxxxxxxx",
pwd: "xxxxxxxxx",
roles: [ { role: "userAdminAnyDatabase", db: "admin" }, "readWriteAnyDatabase" ]
}
);
db.createUser(
{
user: "xxxxxxxxx",
pwd: "xxxxxxxxx",
roles: [ { role: "clusterAdmin", db: "admin" }, "readWriteAnyDatabase" ]
}
);
4. Generate a Key using OpenSSL
openssl rand -base64 756 > /home/rep0/repkey
chmod 400 /home/rep2/repkey
sudo chown mongodb:mongodb /home/rep0/repkey
5. Edit /etc/mongod.conf to enable authentication
security:
authorization: enabled
keyFile: /home/rep0/repkey
6. Restart the 3 machines
7. Edit /etc/mongod.conf to add replica set config
replication:
replSetName: myReplica
enableMajorityReadConcern: false
8. Restart the 3 machines
9. Add the hosts on all the VM's
Private-IP-Address rep0
Private-IP-Address rep1
Private-IP-Address rep2
10. Open MongoShell for primary machine (one of the 3)
11. execute the command to start replica set and add secondaries.
rs.initiate();
rs.add();
rs.add("host":"rep1");
rs.addArb("rep2");
12. import sample data on the primary machine and confirm the same is replicated on the secondary machines