Failed to connect to 127.0.0.1:27017, reason: errno:111 Connection refused

Question

while trying this mongo command in ubuntu I am getting this error.

    ritzysystem@ritzysystem-Satellite-L55-A:~$ mongo
    MongoDB shell version: 2.6.1
             


        

Answer 1

Issue was with the connection to the database, it could be due to several reasons. For me it was low disk space on my server machine, and when mongo tries to connect it refuse because of low disk, check your server machine local storage with du -sh if you have low storage space, check your logs size and take step accordingly, issue may exist because of dbpath contradict in /etc/mongod.conf and server actually running dbpath with mongod If you are facing such type of issue, please check my answer in the given link below. https://stackoverflow.com/a/53057695/8247133

Answer 2

is very simple, only delete a file /var/lib/mongodb/mongodb.lock. after only execute: mongo. finished

Answer 3

There are changes in mongod.conf file in the latest MongoDB v 3.6.5 +

Here is how I fixed this issue on mac os High Sierra v 10.12.3

Note: I assume that you have installed/upgrade MongoDB using homebrew

mongo --version

MongoDB shell version v3.6.5 
git version: a20ecd3e3a174162052ff99913bc2ca9a839d618 
OpenSSL version: OpenSSL 1.0.2o  27 Mar 2018 
allocator: system modules: none build environment:
distarch: x86_64
target_arch: x86_64

1. find mongod.conf file

    sudo find / -name mongod.conf` 
   

   /usr/local/etc/mongod.conf > first result .

2. open mongod.conf file

   sudo vi /usr/local/etc/mongod.conf
   

3. edit in the file for remote access under net: section

    port: 27017  
    bindIpAll: true 
    #bindIp: 127.0.0.1 // comment this out
   

4. restart mongodb

   if you have installed using brew than

   brew services stop mongodb
   
   brew services start mongodb
   

otherwise, kill the process.

   sudo kill -9 <procssID>

Answer 4

Do this:

sudo rm /var/lib/mongodb/mongod.lock
sudo service mongod restart

If you are on Ubuntu 16.04 which you can figure out by runnign this:

lsb_release -a

You need to Create a new file at /lib/systemd/system/mongod.service with the following contents:

[Unit]
Description=High-performance, schema-free document-oriented database
After=network.target
Documentation=https://docs.mongodb.org/manual

[Service]
User=mongodb
Group=mongodb
ExecStart=/usr/bin/mongod --quiet --config /etc/mongod.conf

[Install]
WantedBy=multi-user.target

Answer 5

Just some thoughts on my case.

If you have changed the dbPath and logPath dirs to your custom values (say /data/mongodb/data, /data/mongodb/log), you must chown them to mongodb user, otherwise, the non-existent /data/db/ dir will be used.

sudo chown -R mongodb:mongodb /data/mongodb/

sudo service mongod restart

Answer 6

I had the same problem on Mac OS Try to run sudo mongod and in a new terminal tab run mongo