Failed to unlink socket file: Operation not permitted - mongodb

Question

I am facing this issue where I am unable to get my mongod started successfully:
This is the error:
{"t":{"$date":"2023-01-13T12:33:59.922+05:00"},"s":"I",
"c":"NETWORK", "id":4915701, "ctx":"-","msg":"Initialized wire
specification","attr":{"spec":{"incomingExternalClient":{"minWireVersion":0,"maxWireVersion":17},"incomingInternalClient":{"minWireVersion":0,"maxWireVersion":17},"outgoing":{"minWireVersion":6,"maxWireVersion":17},"isInternalClient":true}}}
{"t":{"$date":"2023-01-13T12:33:59.922+05:00"},"s":"I",
"c":"CONTROL", "id":23285, "ctx":"-","msg":"Automatically disabling
TLS 1.0, to force-enable TLS 1.0 specify --sslDisabledProtocols
'none'"} {"t":{"$date":"2023-01-13T12:33:59.924+05:00"},"s":"I",
"c":"NETWORK", "id":4648601, "ctx":"main","msg":"Implicit TCP
FastOpen unavailable. If TCP FastOpen is required, set
tcpFastOpenServer, tcpFastOpenClient, and tcpFastOpenQueueSize."}
{"t":{"$date":"2023-01-13T12:33:59.925+05:00"},"s":"I", "c":"REPL",
"id":5123008, "ctx":"main","msg":"Successfully registered
PrimaryOnlyService","attr":{"service":"TenantMigrationDonorService","namespace":"config.tenantMigrationDonors"}}
{"t":{"$date":"2023-01-13T12:33:59.925+05:00"},"s":"I", "c":"REPL",
"id":5123008, "ctx":"main","msg":"Successfully registered
PrimaryOnlyService","attr":{"service":"TenantMigrationRecipientService","namespace":"config.tenantMigrationRecipients"}}
{"t":{"$date":"2023-01-13T12:33:59.925+05:00"},"s":"I", "c":"REPL",
"id":5123008, "ctx":"main","msg":"Successfully registered
PrimaryOnlyService","attr":{"service":"ShardSplitDonorService","namespace":"config.tenantSplitDonors"}}
{"t":{"$date":"2023-01-13T12:33:59.925+05:00"},"s":"I",
"c":"CONTROL", "id":5945603, "ctx":"main","msg":"Multi threading
initialized"} {"t":{"$date":"2023-01-13T12:33:59.925+05:00"},"s":"I",
"c":"CONTROL", "id":4615611, "ctx":"initandlisten","msg":"MongoDB
starting","attr":{"pid":24280,"port":27017,"dbPath":"/data/db","architecture":"64-bit","host":"ehsan-HP"}}
{"t":{"$date":"2023-01-13T12:33:59.925+05:00"},"s":"I",
"c":"CONTROL", "id":23403, "ctx":"initandlisten","msg":"Build
Info","attr":{"buildInfo":{"version":"6.0.3","gitVersion":"f803681c3ae19817d31958965850193de067c516","openSSLVersion":"OpenSSL
1.1.1 11 Sep 2018","modules":[],"allocator":"tcmalloc","environment":{"distmod":"ubuntu1804","distarch":"x86_64","target_arch":"x86_64"}}}}
{"t":{"$date":"2023-01-13T12:33:59.925+05:00"},"s":"I",
"c":"CONTROL", "id":51765, "ctx":"initandlisten","msg":"Operating
System","attr":{"os":{"name":"Ubuntu","version":"18.04"}}}
{"t":{"$date":"2023-01-13T12:33:59.925+05:00"},"s":"I",
"c":"CONTROL", "id":21951, "ctx":"initandlisten","msg":"Options set
by command line","attr":{"options":{}}}
{"t":{"$date":"2023-01-13T12:33:59.926+05:00"},"s":"E",
"c":"NETWORK", "id":23024, "ctx":"initandlisten","msg":"Failed to
unlink socket
file","attr":{"path":"/tmp/mongodb-27017.sock","error":"Operation not
permitted"}} {"t":{"$date":"2023-01-13T12:33:59.926+05:00"},"s":"F",
"c":"ASSERT", "id":23091, "ctx":"initandlisten","msg":"Fatal
assertion","attr":{"msgid":40486,"file":"src/mongo/transport/transport_layer_asio.cpp","line":1125}}
{"t":{"$date":"2023-01-13T12:33:59.926+05:00"},"s":"F", "c":"ASSERT",
"id":23092, "ctx":"initandlisten","msg":"\n\n***aborting after
fassert() failure\n\n"}
What I have tried so far:
Delete /tmp/mongodb-27017.sock file and then start mongod by doing sudo service mongod start. It didn't work. The file mongodb-27017.sock created after running this comand has the following permissions:
srwx------ 1 mongodb mongodb 0 January 13 12:49 /tmp/mongodb-27017.sock
These are the permissions of /data/db:
$ ls -la /data/db
total 8
drwxr-xr-x 2 mongodb mongodb 4096 January 13 11:35 .
drwxr-xr-x 3 root root 4096 January 13 11:35 ..
What is going wrong here? This is my mongod version:
$ mongod --version
db version v6.0.3
Build Info: {
"version": "6.0.3",
"gitVersion": "f803681c3ae19817d31958965850193de067c516",
"openSSLVersion": "OpenSSL 1.1.1 11 Sep 2018",
"modules": [],
"allocator": "tcmalloc",
"environment": {
"distmod": "ubuntu1804",
"distarch": "x86_64",
"target_arch": "x86_64"
}
}
I am on Ubuntu 18.
EDIT:
Here are the contents of /var/log/auth.log:
Jan 13 13:40:24 ehsan-HP sudo: ehsan : TTY=pts/7 ; PWD=/home/ehsan ; USER=root ; COMMAND=/usr/sbin/service mongod restart
Jan 13 13:40:24 ehsan-HP sudo: pam_unix(sudo:session): session opened for user root by (uid=0)
Jan 13 13:40:24 ehsan-HP sudo: pam_unix(sudo:session): session closed for user root