mongoDB : Authentication of user is working fine, but getting "Unauthorized not authorized on admin to execute command" in the logs -

i've followed steps mentioned in how add admin user mongo in 2.6?

at first, "auth=true" in /etc/mongod.conf file commented out authentication not done , create following users in respective dbs.

admin:

use admin; db.createuser({user: "mongoroot", pwd: "password", roles: [{role: "root", db: "admin"}]});  db.createuser({user: "mongoadmin", pwd: "password", roles: ["readwrite"]}); db.createuser({user: "siteuseradmin", pwd: "password", roles: [{role: "useradminanydatabase", db: "admin"}]});  db.createuser({user: "mongodbadmin", pwd: "password", roles: [{role: "dbadmin", db: "admin"}]});  db.createuser({user: "mongodbowner", pwd: "password", roles: [{role: "dbowner", db: "admin"}]});   db.createuser({user: "mongowrite", pwd: "password", roles: [{role: "readwrite",db: "mongo_database"}]});  (added in admin giving command command-line 'mongo mongo_database --port 27018 -u mongowrite -p password --authenticationdatabase admin', user mongowrite able login done in https://gist.github.com/tamoyal/10441108) db.createuser({user: "mongoread", pwd: "password", roles: [{role: "read", db: "mongo_database"}]});  (added in admin giving command command-line 'mongo mongo_database --port 27018 -u mongoread -p password --authenticationdatabase admin', user mongoread able login  done in https://gist.github.com/tamoyal/10441108) 

config:

use config; db.createuser({user: "mongoconfig", pwd: "password", roles: [{role: "readwrite", db: "config"}]});  

test:

use test; db.createuser({user: "mongotest", pwd: "password", roles: [{role: "readwrite", db: "test"}]});  

mongo_database:

use mongo_database; db.createuser({user: "mongowrite", pwd: "password", roles: [{role: "readwrite",db: "mongo_database"}]});  db.createuser({user: "mongoread", pwd: "password", roles: [{role: "read", db: "mongo_database"}]});  db.createuser({user: "mongoadmin", pwd: "password", roles: [{role: "readwrite", db: "mongo_database"}]});  

after making sure required users added, turning on authentication uncommenting "auth=true" in /etc/mongod.conf file , restarting mongodb.

[ec2-user@ip-xxx-xx-xx-xx ~]$ mongo mongo_database --port 27018 -u mongowrite -p password --authenticationdatabase admin mongodb shell version: 2.6.10 connecting to: 127.0.0.1:27018/mongo_database rs0:primary> db.test.insert({"hello":"world"}); writeresult({ "ninserted" : 1 }) rs0:primary> exit bye [ec2-user@ip-xxx-xx-xx-xx ~]$ mongo mongo_database --port 27018 -u mongoread -p password --authenticationdatabase admin mongodb shell version: 2.6.10 connecting to: 127.0.0.1:27018/mongo_database rs0:primary> db.test.insert({"hello":"world"}); writeresult({         "writeerror" : {                 "code" : 13,                 "errmsg" : "not authorized on mongo_database execute command { insert: \"test\", documents: [ { _id: objectid('559bba6ead81843e121c5ac7'), hello: \"world\" } ], ordered: true }"         } }) rs0:primary> 

everything works fine till point. issue encountering log file getting bombarded following 2 lines @ tens of thousand lines per minute , within no time, disk running out of space.

2015-07-07t11:40:28.340+0000 [conn3] unauthorized not authorized on admin execute command { writebacklisten: objectid('55913d82b47aa336e4f971c2') } 2015-07-07t11:40:28.340+0000 [conn2] unauthorized not authorized on admin execute command { writebacklisten: objectid('55923232e292bbe6ca406e4e') } 

just give idea, in span of 10 seconds, 10 mb worth of log file generated consisting of above mentioned 2 lines.

[ec2-user@ip-xxx-xx-xx-xx ~]$ date tue jul  7 11:44:01 utc 2015 [ec2-user@ip-xxx-xx-xx-xx ~]$ df -h filesystem      size  used avail use% mounted on /dev/xvdh       4.8g  388m  4.2g   9% /log [ec2-user@ip-xxx-xx-xx-xx ~]$ date tue jul  7 11:44:14 utc 2015 [ec2-user@ip-xxx-xx-xx-xx ~]$ df -h filesystem      size  used avail use% mounted on /dev/xvdh       4.8g  398m  4.2g   9% /log 

to knowledge, authentication seems working fine. logs getting filled @ super sonic speed. doing wrong? please help. in advance.

the excessive logging config servers , after adding authentication config servers authentication turned on, wouldn't stop. upgraded mongo 3.0.4 replica sets, turned on authentication on replica sets , upgraded mongo 3.0.4 on config servers , started working fine without issues (same steps on mongo 2.6.x result in issue mentioned above). so, planned upgrade 3.0.4 in order bypass issue. hope, helpful someone.