Failed to unlink socket file /tmp/mongodb-27017.sock errno:1 Operation not permitted

Error:-

Failed to unlink socket file /tmp/mongodb-27017.sock errno:1 Operation not permitted 
and mongoDB Service was not starting after upgrade.. 



I had an unclean upgrade of MongoDB from 3.2.12 to 3.4.2  on Ubuntu 16.04 LTS. 

I reinstalled MongoDB enterprise with below steps..

1.Import the public key used by the package management system.

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 0C49F3730359A14518585931BC711F9BA15703C6

2.Create a /etc/apt/sources.list.d/mongodb-enterprise.list file for MongoDB.

echo "deb [ arch=amd64,arm64,ppc64el,s390x ] http://repo.mongodb.com/apt/ubuntu xenial/mongodb-enterprise/3.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-enterprise.list

3.Reload local package database

sudo apt-get update

4.Install the MongoDB Enterprise packages.

sudo apt-get install -y mongodb-enterprise

When i executed below command to start MongoDB i got below error in

 /var/log/mongodb/mongod.log

sudo service mongod start

Now when I login as root and run Mongodb via service mongodb start, I get below error in Log folder 

***aborting after fassert() failure


2017-02-05T12:04:58.949+0530 I CONTROL  [main] ***** SERVER RESTARTED *****
2017-02-05T12:04:58.953+0530 I CONTROL  [initandlisten] MongoDB starting : pid=21525 port=27017 dbpath=/var/lib/mongodb 64-bit host=ubuntu
2017-02-05T12:04:58.953+0530 I CONTROL  [initandlisten] db version v3.2.12
2017-02-05T12:04:58.953+0530 I CONTROL  [initandlisten] git version: ef3e1bc78e997f0d9f22f45aeb1d8e3b6ac14a14
2017-02-05T12:04:58.953+0530 I CONTROL  [initandlisten] OpenSSL version: OpenSSL 1.0.2g-fips  1 Mar 2016
2017-02-05T12:04:58.953+0530 I CONTROL  [initandlisten] allocator: tcmalloc
2017-02-05T12:04:58.953+0530 I CONTROL  [initandlisten] modules: none
2017-02-05T12:04:58.953+0530 I CONTROL  [initandlisten] build environment:
2017-02-05T12:04:58.953+0530 I CONTROL  [initandlisten]     distmod: ubuntu1604
2017-02-05T12:04:58.953+0530 I CONTROL  [initandlisten]     distarch: x86_64
2017-02-05T12:04:58.953+0530 I CONTROL  [initandlisten]     target_arch: x86_64
2017-02-05T12:04:58.953+0530 I CONTROL  [initandlisten] options: { config: "/etc/mongod.conf", net: { bindIp: "127.0.0.1", port: 27017 }, storage: { dbPath: "/var/lib/mongodb", journal: { enabled: true } }, systemLog: { destination: "file", logAppend: true, path: "/var/log/mongodb/mongod.log", quiet: true } }
2017-02-05T12:04:58.974+0530 E NETWORK  [initandlisten] Failed to unlink socket file /tmp/mongodb-27017.sock errno:1 Operation not permitted
2017-02-05T12:04:58.974+0530 I -        [initandlisten] Fatal Assertion 28578
2017-02-05T12:04:58.974+0530 I -        [initandlisten]

***aborting after fassert() failure

Resolution:-

in order to solve this issue, i executed below command

sudo chown mongodb:mongodb /tmp/mongodb-27017.sock

After executing this command when i restarted mongodb service, it started successfully.

This you can also notice when you type netstat -plntu

you will notice 127.0.0.1:27017   23462/mongod

root@ubuntu:~# sudo service mongod start
root@ubuntu:~# netstat -plntu
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 127.0.0.1:27017         0.0.0.0:*               LISTEN      23462/mongod
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      4988/sshd
tcp        0      0 0.0.0.0:1433            0.0.0.0:*               LISTEN      5049/sqlservr
tcp        0      0 127.0.0.1:1434          0.0.0.0:*               LISTEN      5049/sqlservr
tcp6       0      0 :::22                   :::*                    LISTEN      4988/sshd
udp        0      0 0.0.0.0:68              0.0.0.0:*                           4944/dhclient
root@ubuntu:~#




and the log file will appear like:-

***aborting after fassert() failure


2017-02-05T12:29:33.223+0530 I CONTROL  [main] ***** SERVER RESTARTED *****
2017-02-05T12:29:33.228+0530 I CONTROL  [initandlisten] MongoDB starting : pid=23462 port=27017 dbpath=/var/lib/mongodb 64-bit host=ubuntu
2017-02-05T12:29:33.228+0530 I CONTROL  [initandlisten] db version v3.4.2
2017-02-05T12:29:33.228+0530 I CONTROL  [initandlisten] git version: 3f76e40c105fc223b3e5aac3e20dcd026b83b38b
2017-02-05T12:29:33.228+0530 I CONTROL  [initandlisten] OpenSSL version: OpenSSL 1.0.2g-fips  1 Mar 2016
2017-02-05T12:29:33.228+0530 I CONTROL  [initandlisten] allocator: tcmalloc
2017-02-05T12:29:33.228+0530 I CONTROL  [initandlisten] modules: enterprise 
2017-02-05T12:29:33.228+0530 I CONTROL  [initandlisten] build environment:
2017-02-05T12:29:33.228+0530 I CONTROL  [initandlisten]     distmod: ubuntu1604
2017-02-05T12:29:33.228+0530 I CONTROL  [initandlisten]     distarch: x86_64
2017-02-05T12:29:33.228+0530 I CONTROL  [initandlisten]     target_arch: x86_64
2017-02-05T12:29:33.228+0530 I CONTROL  [initandlisten] options: { config: "/etc/mongod.conf", net: { bindIp: "127.0.0.1", port: 27017 }, storage: { dbPath: "/var/lib/mongodb", journal: { enabled: true } }, systemLog: { destination: "file", logAppend: true, path: "/var/log/mongodb/mongod.log", quiet: true } }
2017-02-05T12:29:33.248+0530 I -        [initandlisten] Detected data files in /var/lib/mongodb created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.
2017-02-05T12:29:33.248+0530 I STORAGE  [initandlisten] 
2017-02-05T12:29:33.248+0530 I STORAGE  [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine
2017-02-05T12:29:33.248+0530 I STORAGE  [initandlisten] **          See http://dochub.mongodb.org/core/prodnotes-filesystem
2017-02-05T12:29:33.248+0530 I STORAGE  [initandlisten] wiredtiger_open config: create,cache_size=1321M,session_max=20000,eviction=(threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0),
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten] 
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten] ** WARNING: Access control is not enabled for the database.
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten] **          Read and write access to data and configuration is unrestricted.
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten] 
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten] 
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten] 
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten] 
2017-02-05T12:29:34.312+0530 I FTDC     [initandlisten] Initializing full-time diagnostic data capture with directory '/var/lib/mongodb/diagnostic.data'
2017-02-05T12:29:34.312+0530 I NETWORK  [thread1] waiting for connections on port 27017

Now mongoDB started with..

root@ubuntu:~# mongo
MongoDB shell version v3.4.2
connecting to: mongodb://127.0.0.1:27017
MongoDB server version: 3.4.2
Server has startup warnings:
2017-02-05T12:29:33.248+0530 I STORAGE  [initandlisten]
2017-02-05T12:29:33.248+0530 I STORAGE  [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine
2017-02-05T12:29:33.248+0530 I STORAGE  [initandlisten] **          See http://dochub.mongodb.org/core/prodnotes-filesystem
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten]
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten] ** WARNING: Access control is not enabled for the database.
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten] **          Read and write access to data and configuration is unrestricted.
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten]
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten]
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten]
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
2017-02-05T12:29:34.275+0530 I CONTROL  [initandlisten]
MongoDB Enterprise >

Now i notice that MongoDB server version is 3.4.2

Thanks for reading..