Get Total Number of Connections to be Established in MongoDB

We can find out total number connection to be established in MongoDB using the commands,  Enter into MongoDB using mongo command then execute 

# mongo



mongos> var status = db.serverStatus()



mongos> status.connections

displays established IP's

# netstat -anp --tcp --udp | grep mongo



tcp        0      0 192.168.1.120:27017      192.168.2.50:34213    ESTABLISHED 27999/mongos    

tcp        0      0 192.168.1.120:27017      192.168.2.50:34335    ESTABLISHED 27999/mongos    

tcp        0      0 192.168.1.120:27017      192.168.2.50:34284    ESTABLISHED 27999/mongos    

Also, you can count the number established connection, 

Count the Number of  MongoDB connection with IP :

# netstat -anp --tcp --udp | grep mongo | wc -l



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