Is there any way to connect to mongodb via unix socket in python, while the official pymongo module does not support unix socket yet.
I'd like any third-party alternatives, or patches, while I've searched around and did not find one.
I do not like an ORM-style library since the mongodb => python dicts are natural and easy to use, so I did not take something like MongoEngine into account.
MongoDB, by default, creates a unix socket at /tmp/mongodb-27017.sock. As of pymongo 2.4 you can make a connection like this:
from pymongo import MongoClient
CONNECTION = MongoClient('/tmp/mongodb-27017.sock')
Additionally you can disable this behavior by starting mongod with --nounixsocket or specify an alternate location with --unixSocketPrefix <path>
MongoDB will always create and listen on a UNIX socket, unless --nounixsocket is set, --bind_ip is not set, or --bind_ip specifies 127.0.0.1.
Update for MongoDB v3.x
If you upgrade to MongoDB 3.x on linux, the group and other permissions on /tmp/mongodb-27017.sock have been removed. You will receive permission denied error's when you connect using MongoClient(host='/tmp/mongodb-27017.sock')
To fix this, upgrade your MongoDB configuration file to YAML format, which includes the filePermissions option so you set the permissions back.
Example /etc/mongod.conf in YAML format:
storage:
dbPath: "/var/lib/mongodb"
systemLog:
destination: file
path: "/var/log/mongodb/mongod.log"
logAppend: true
net:
unixDomainSocket:
filePermissions: 0777
Outside the scope of Python, you can build a proxy between TCP/IP socket and unix domain socket. So that, you can still use pymongo
Either netcat or socat can do this.
nc -l 1234 | nc -U /tmp/foo
or
socat TCP-LISTEN:1234,reuseaddr,fork UNIX-CLIENT:/tmp/foo
See also:
