Could not start mongos

MongoDB University M103: Basic Cluster Administration
#1 
vagrant@m103:~$ mongos --config mongos-config.conf
2019-10-04T16:34:54.680+0000 W SHARDING [main] Running a sharded cluster with fewer than 3 config servers should only be done for testing purposes and is not recommended for production.
about to fork child process, waiting until server is ready for connections.
forked process: 5915
ERROR: child process failed, exited with error number 48
To see additional information in this output, start without the "--fork" option.

ERROR: child process failed, exited with error number 48

#2

Nice error message you’ve got there @jnvdasa :wink:

#3

I am trying to complete lab for configuring a sharded cluster. I have started the configuration servers and then trying to run the mongos process. It exits with error number 48.

#4

Run the ps code we talked about on your last query.

#5

Tried it already. mongos process is not running.

vagrant@m103:~$ ps -ef | grep mongod
vagrant   3711     1  2 14:31 ?        00:04:57 mongod --config shard-config-2.conf
vagrant   4041     1  2 14:47 ?        00:04:35 mongod --config shard-config-1.conf
vagrant   4187     1  2 14:52 ?        00:04:03 mongod --config mongod-repl-2.conf
vagrant   4298     1  2 14:54 ?        00:04:05 mongod --config mongod-repl-3.conf
vagrant   4665     1  2 15:01 ?        00:03:49 mongod --config mongod-repl-1.conf
vagrant   5780     1  3 16:31 ?        00:01:34 mongod --config shard-config-3.conf
vagrant   6309  3687  0 17:20 pts/2    00:00:00 grep --color=auto mongod
#6

mongo instead of mongod.

#7

Thanks… the process was already running and hence the error. I did not notice the mongod in the grep command and assuming that mongos is not started.

#8

Yep, I figured that it was probably already running that was why I mentioned checking the processes. :+1:

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