i am creating replica set on my local system in windows environment
by following step
mkdir -p \srv\mongodb\rs0-0 \srv\mongodb\rs0-1 \srv\mongodb\rs0-2
mongod --port 27017 --dbpath \srv\mongodb\rs0-0 --replSet rs0 --smallfiles --oplogSize 128
mongod --port 27018 --dbpath \srv\mongodb\rs0-1 --replSet rs0 --smallfiles --oplogSize 128
mongod --port 27019 --dbpath \srv\mongodb\rs0-2 --replSet rs0 --smallfiles --oplogSize 128
and then
mongo shell type mongo --port 27017
rs.initiate()
but i am getttin error
"{ "ok" : 0, "errmsg" : "server is not running with --replSet" }"
thanks in advance
I had the same problem. Thanks to this question and previous answers I solved doing:
I checked all the running mongod processes ps -ef | grep mongo. I had 1 mongo and 2 mongod processes
I killed mongod with sudo sudo killall mongod
and at the end I started with sudo sudo mongod --port 27017 --dbpath \srv\mongodb\rs0-0 --replSet rs0 --smallfiles --oplogSize and it worked
Related
I have 3 shard and 3 Config server on Linux Ubuntu Instance. On system Reboot MongoDB database engine started automatically but Shard doesn't.
can you please help me to make it start automatically in server startup? what action should be taken.
For example, i used below command to setup config
mongod --configsvr --replSet c0 --port 26050 --logpath /data/db/log.c0 --logappend --dbpath /data/db/c0 --fork --bind_ip_all
For Shard,
mongod --shardsvr --replSet s1 --dbpath /data/s1 --logpath /data/s1/log.s1 --port 27000 --fork --logappend --bind_ip_all
I resolved my issue with the startup script on Linux.
I just need to initialize all services, Mongo shard, Config and Router need to be configured again.
as above,
mongod --configsvr --replSet c0 --port 26050 --logpath /data/db/log.c0 --logappend --dbpath /data/db/c0 --fork --bind_ip_all
mongod --shardsvr --replSet s1 --dbpath /data/s1 --logpath /data/s1/log.s1 --port 27000 --fork --logappend --bind_ip_all
Trying to set up a local sharded cluster for testing (mongo 3.6). There are a number of scripts online (e.g here, here) all of which seem to fail for me.
running (cribbed mostly from the 2nd example above):
start the config server:
mongod --configsvr --replSet csrs --dbpath /data/db/configdb --port 27018 --fork --logpath log/mongods.log
initiate the replica set on the config:
mongo localhost:27018 << !
rs.initiate({_id: "csrs", configsvr: true, members: [{_id: 0, host: "${local_ip}:27018"}]});
!
start the mongod processes:
mongod --port 27030 --dbpath /data/db/db1-0 --shardsvr --replSet rs --fork --logpath log/mongod1-0.log
mongod --port 27040 --dbpath /data/db/db2-0 --shardsvr --replSet rs --fork --logpath log/mongod2-0.log
mongod --port 27020 --dbpath /data/db/db0-0 --shardsvr --replSet rs --fork --logpath log/mongod0-0.log
initiate the replica set(s)
mongo localhost:27020 << !
rs.initiate({_id: "rs", members: [{_id: 0, host: "${local_ip}:27020"}, {_id: 1, host: "${local_ip}:27030"}, {_id: 1, host: "${local_ip}:27040"}]});
!
(note, initial script had a separate rs for each shard, which caused the same error)
start a mongos and point it to the config server:
mongos --configdb csrs/${local_ip}:27018 --port 27017 --fork --logpath log/mongos.log
log into the mongos and add shards:
e.g. sh.addShard("rs/${local_ip}:27020").
This last step is where this goes wrong, getting the error
"errmsg" : "Could not find host matching read preference { mode: \"primary\" } for set rs",
"code" : 133,
Can anyone provide any pointers on what I'm missing here?
I have installed mongoDB 3.4.5 in centOS 7.2 machine.
I am configuring sharding in standalone mode.
Steps I followed:
For Replica Sets:
mongod --replSet rs0 --dbpath /data/srd/rs0 --logpath /data/srd/rs0/log.rs0 --port 27000 --fork --logappend --smallfiles --oplogSize 50 &
mongod --replSet rs0 --dbpath /data/srd/rs1 --logpath /data/srd/rs1/log.rs1 --port 27001 --fork --logappend --smallfiles --oplogSize 50 &
mongod --replSet rs0 --dbpath /data/srd/rs2 --logpath /data/srd/rs2/log.rs2 --port 27002 --fork --logappend --smallfiles --oplogSize 50 &
For Shards:
mongod --replSet rs0 --shardsvr --dbpath /data/srd/srd0 --logpath /data/srd/srd0/log.srd0 --port 27020 --fork --logappend --smallfiles --oplogSize 50 &
mongod --replSet rs0 --shardsvr --dbpath /data/srd/srd1 --logpath /data/srd/srd1/log.srd1 --port 27021 --fork --logappend --smallfiles --oplogSize 50 &
mongod --replSet rs0 --shardsvr --dbpath /data/srd/srd2 --logpath /data/srd/srd2/log.srd2 --port 27022 --fork --logappend --smallfiles --oplogSize 50 &
For Config server:
mongod --configsvr --replSet configReplSet --dbpath /data/srd/cfgrep0 --logpath /data/srd/cfgrep0/log.cfgrep0 --port 27006 --fork &
mongod --configsvr --replSet configReplSet --dbpath /data/srd/cfgrep1 --logpath /data/srd/cfgrep1/log.cfgrep1 --port 27007 --fork &
mongod --configsvr --replSet configReplSet --dbpath /data/srd/cfgrep2 --logpath /data/srd/cfgrep2/log.cfgrep2 --port 27008 --fork &
To start Mongos:
mongos --configdb configReplSet/sit:27006,sit:27007,sit:27008 --port 26060
I am able to login the mongos shell and also able to add the shards.
But while enabling the shard I am getting exceptions as below.
mongos> sh.enableSharding("test");
{
"code" : 193,
"ok" : 0,
"errmsg" : "Cannot accept sharding commands if not started with --shardsvr"
}
Any suggestion ?
These are steps I followed to setup sharding:
1. Start Config Server:
mongod --configsvr --dbpath fresh/config1 --port 30001 --replSet r1
Start Mongos:
mongos --configdb "r1/localhost:30001" --port 40001
Connect to mongo shell and execute these commands:
Connect to Mongo Shell :
mongo --host localhost --port 30001
Now execute these commands:
rs.initiate();
rs.status();
Start Mongo Shard Servers:
mongod --shardsvr --port 50001 --dbpath fresh/m1
mongod --shardsvr --port 50002 --dbpath fresh/m2
Connect to mongos and execute these commands:
Connect to mongos:
mongo --host localhost --port 40001
Now execute below commands:
sh.addShard('localhost:50001');
sh.addShard('localhost:50002');
sh.enableSharding('testdb');
sh.shardCollection('testdb.demo',{'name':1});
MongoDB User Manual: https://docs.mongodb.com/manual/reference/method/#sharding
I have done Replication in one single machine with three different port(Say 27018[master],27019,27020). Also I have done Sharding in one single machine with two different port(Say 27021,27022).
Now I have to implement replication for the sharded machine port. I need to implement replication for 27021 and 27022. How can I do this? Please help me to resolve this issue.
Steps followed :
Part 1: Set up 3 port for replication
mongod --replSet rs0
mongod --port 27018 --dbpath F:\Data1 --replSet rs0
mongod --port 27020 --dbpath F:\Data2 --replSet rs0
mongo localhost:27017
rs.initiate()
rs.add("ComputerName:27018")
rs.add("ComputerName:27020")
Part 2: Now set up for sharding
mongod --configsvr --replSet configReplSet
mongod --port 27021 --dbpath F:\Data4 --replSet configReplSet
mongod --port 27025 --dbpath F:\Data5 --replSet configReplSet
mongo 127.0.0.1:27019
rs.initiate({_id:"configReplSet",configsvr:true,members:[{_id: 0,host: "127.0.0.1:27021"},{_id:1,host: "127.0.0.1:27025"}]})
When I run this code I am getting an error:
{
"ok" : 0,
"errmsg" : "No host described in new configuration 1 for replica set configReplSet maps to this node",
"code" : 93
}
So remaining steps I am not able to execute. Any idea how can I overcome this issue?
Got one method to achieve my requirement.
Steps as follows
Config Server and its replication
mongod --configsvr --dbpath F:\Data1\configdb\ --replSet rs2 --port 27017
mongod --configsvr --dbpath F:\Data2\configdb\ --replSet rs2 --port 27018
mongod --configsvr --dbpath F:\Data3\configdb\ --replSet rs2 --port 27019
mongo machineip:27017
config= {_id:"rs2", members :[{ _id:0, host:'10.18.0.225:27017'}, {_id:1, host:'10.18.0.225:27018'}, {_id:2, host:'10.18.0.225:27019'}]}
rs.initiate (config)
rs.status()
Routing Server
mongos -configdb machineip:27017 --port 27020
Shard1 and its replication
mongod --dbpath F:\Data4\db\ --shardsvr --replSet rs0 --port 27021
mongod --dbpath F:\Data5\db\ --shardsvr --replSet rs0 --port 27022
mongod --dbpath F:\Data6\db\ --shardsvr --replSet rs0 --port 27023
Shard2 and its replication
mongod --dbpath F:\Data7\db\ --shardsvr --replSet rs1 --port 27024
mongod --dbpath F:\Data8\db\ --shardsvr --replSet rs1 --port 27025
mongod --dbpath F:\Data9\db\ --shardsvr --replSet rs1 --port 27026
Replication configuration for Shard1
mongo machineip:27021
config= {_id:"rs0", members :[{ _id:0, host:'machineip:27021'},{_id:1,host:'machineip:27022'},{_id:2,host:'machineip:27023'}]}
rs.initiate(config)
rs.status()
Replication configuration for Shard2
mongo machineip:27024
config= {_id:"rs0", members :[{ _id:0, host:'machineip:27024''},{_id:1,host:'machineip:27025''},{_id:2,host:'machineip:27026''}]}
rs.initiate(config)
rs.status()
Sharding Configuration in route server
sh.status()
sh.addShard ("rs0/machineip:27021")
sh.addShard ("rs0/machineip:27024")
sh.status()
sh.enableSharding ("test")
sh.shardCollection ("test.stud", {id: 1})
sh.status()
Hope this will help :-)
I'm trying to configure a Replica Set with 2 members in local e 1 member on a cloud-server.
I started the two instance from local in this way:
mongod --port 27117 --dbpath mongodb/rs0-0 --logpath mongodb/rs0-0/mongo.log --replSet rs0 --fork
mongod --port 27118 --dbpath mongodb/rs0-1 --logpath mongodb/rs0-1/mongo.log --replSet rs0 --fork
and then I started the instance on my cloud-server (after opened the port):
mongod --port 27119 --dbpath mongoRS/rs0-2 --logpath mongoRS/rs0-2/mongo.log --replSet rs0 --fork
So, I started the server to configure the Replica Set:
mongo --port 27117
rsconf = {
_id: "rs0",
members: [{
_id: 0,
host: "myLocalIP:27117"
}]
}
rs.initiate( rsconf )
rs.add("myLocalIP:27118")
rs.add("myServerIP:27119")
So I tried to do Test Connections in both directions:
from my local's shell:
mongo --host myCloudServer --port 27119
I enter in the server but it's not the Replica Set instance
from cloud-server's shell, it fails:
mongo --host myLocalIP --port 27017
where is the error? Thanks
I take it back about test connections.
Both connections from myLocal to remote-myCloud and vice-versa was refused