I have a replicaset where there is one primary and two secondary nodes.
Once in a while I am not able to connect to primary and i get this error which goes away after a minute or so and I am able to connect. Any thoughts why this could be happening ?
When this error happens I tried connecting to secondary and did rs.status which said
primary is still same server and running ok.
Below is the command text from the console that shows the issue.
mongo --host <hostname> --port 27017
MongoDB shell version: 2.2.2
connecting to: <hostname>:27017/test
Sat Mar 2 14:54:02 DBClientCursor::init call() failed
Sat Mar 2 14:54:02 Error: Error during mongo startup. :: caused by :: 10276 DBClientBase::findN: transport error: <hostname>:27017 ns: admin.$cmd query: { whatsmyuri: 1 } src/mongo/shell/mongo.js:93
exception: connect failed
mongo --host <hostname> --port 27017
MongoDB shell version: 2.2.2
connecting to: <hostname>:27017/test
rs0:PRIMARY>
Related
MongoDB shell version v4.4.1
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
Error: couldn't connect to server 127.0.0.1:27017, connection attempt failed: SocketException: Error connecting to 127.0.0.1:27017 :: caused by :: No connection could be made because the target machine actively refused it. :
connect#src/mongo/shell/mongo.js:374:17
#(connect):2:6
exception: connect failed
exiting with code 1
I had the same problem. Try starting the mongo shell with:
mongod --dbpath /usr/local/var/mongodb --logpath /usr/local/var/log/mongodb/mongo.log
Details are in the mongoDB docs:
https://docs.mongodb.com/manual/tutorial/install-mongodb-on-os-x-tarball/
I have recently installed Wekan on a CentOS (CentOS Linux release 7.6.1810) server and it works well. However I need to login to the MongoDB. I have followed the installation guide of MongoDB and set a password for 'admin' user. But when When the "mongo -u admin -p" command is entered it prompts for password and I get the following error. However I have another issue not starting "mongod", but it is enabled.
connecting to: test
2020-06-12T01:20:23.618-0400 W NETWORK [thread1] Failed to connect to 127.0.0.1:27017, in(checking socket for error after poll), reason: errno:111 Connection refused
2020-06-12T01:20:23.618-0400 E QUERY [thread1] Error: couldn't connect to server 127.0.0.1:27017, connection attempt failed :
connect#src/mongo/shell/mongo.js:229:14
#(connect):1:6
exception: connect failed
I created this user in mongo which does not seem to work when trying to login to the DB.
$ mongo
db.createUser(
{
user: "admin",
pwd: "abcd1234",
roles: [ { role: "root", db: "admin" } ]
}
)
Firstly I installed the latest version of mongodb and then I downgraded to to 3.2 which works with wekan. However Wekan still works fine without any issue.
This is the error I get when starting the mongod.
$ systemctl start mongod
Job for mongod.service failed because the control process exited with error code.
See "systemctl status mongod.service" and "journalctl -xe" for details.
$ systemctl enable mongod
mongod.service is not a native service, redirecting to /sbin/chkconfig.
Executing /sbin/chkconfig mongod on
The port mongod uses is 27019 which I found from the following command.
$ ss -nutlp
tcp LISTEN 0 128 127.0.0.1:27019 *:* users:(("mongod",pid=11578,fd=6))
What am I doing wrong here?
In the output of the mongo shell connection failure:
Failed to connect to 127.0.0.1:27017, in(checking socket for error after poll), reason: errno:111 Connection refused
This tells you that it is attempting to connect to port 27017 on localhost, and that the operating system actively refused the connection because nothing is listening on that port.
The ss output shows that mongod is listening on port 27019.
Try adding --port 27019 to your mongo command line.
When I type mongo on command prompt than output like
~$ mongo
MongoDB shell version: 2.2.3
connecting to: test
But when I type mongo 127.0.0.1:28017/stu1
output :-
MongoDB shell version: 2.2.3
connecting to: 127.0.0.1:28017/stu1
Mon Mar 10 16:56:01 DBClientCursor::init call() failed
Mon Mar 10 16:56:01 Error: Error during mongo startup. :: caused by :: 10276
DBClientBase::findN: transport error: 127.0.0.1:28017 ns: admin.$cmd query: { whatsmyuri: 1 } src/mongo/shell/mongo.js:93
exception: connect failed
OS :- ubuntu 12.04
So please help me to solve this error.
28017 is the default port for the HTTP admin interface, so if your config is allowing HTTP, you should use a web browser to access it http://127.0.0.1:28017/
You're trying to use mongo shell to access HTTP service.
To have access to the database using HTTP protocol then use ~$ mongod --rest to start the db. Now call http://127.0.0.1:28017/stu1/coll_name in the web browser which list all the documents in your collection.
Did I use the right setup for mongo-connector? I followed this steps here.
PS C:\mongodb\bin> mongod --port 27017 --dbpath C:\data\db --replSet rs0
Then I start C:\mongodb\bin\mongo.exe and typed rs.initiate() and rs.conf(). If I check the status I get two errors:
rs0:PRIMARY> rs.status()
Sat Jan 25 19:19:47.788 Socket say send() errno:10053 An established connection
was aborted by the software in your host machine. 127.0.0.1:27017
Sat Jan 25 19:19:47.803 Error: socket exception [SEND_ERROR] for 127.0.0.1:27017
at src/mongo/shell/query.js:78
Sat Jan 25 19:19:47.803 trying reconnect to 127.0.0.1:27017
Sat Jan 25 19:19:47.819 reconnect 127.0.0.1:27017 ok
I am trying to execute a Java script file in MongoDB at port 5930. Mongo can listen to the Database on that port:
./mongo localhost:5930
connecting to: localhost:5930/test
Server has startup warnings:
Wed Dec 18 13:15:58.906 [initandlisten]
Wed Dec 18 13:15:58.906 [initandlisten] ** WARNING: /proc/sys/vm/overcommit_memory is 2
Wed Dec 18 13:15:58.906 [initandlisten] ** Journaling works best with it set to 0 or 1
Now when I execute test.js at port 5930 but I get the following error:
./mongo test.js
connecting to: test
Wed Dec 18 13:22:56.011 JavaScript execution failed: Error: couldn't connect to server 127.0.0.1:27017 at src/mongo/shell/mongo.js:L112
exception: connect failed
The test.js has the following line:
conn = new Mongo("localhost:5930);
How can I run the script at port 5930? and Why did the script always try to execute from the default port (27017)?
Thanks
Mongo tries to connect itself to the local database automatically, before it looks at your script.
Connect to a local Mongo database running on an alternate port with this mongo command line:
mongo --nodb test.js
And have your code open the connection (which you already do).