Last updated on December 17, 2023
Table of Contents
1. Choose version:
- Community: CLICK HERE
- Enterprise: CLICK HERE
2. Installation and Configuration
I use Ubuntu 20.04 and I want to install mongodb Community ver 2.6.12
Installation:
$ cd ~/Downloads $ curl -O http://downloads.mongodb.org/linux/mongodb-linux-x86_64-2.6.12.tgz $ tar -zxvf mongodb-linux-x86_64-2.6.12.tgz $ mv mongodb-linux-x86_64-2.6.12 2.6.12 $ cd /opt && mkdir -p mongodb $ cd ~/Downloads $ cp -R 2.6.12 /opt/mongodb $ cp /mongod.conf /opt/mongodb/2.6.12/
Configuration:
Configuration options on version <3.0 is different with version >3.0 so I googled it. This is what I had.
systemLog:
destination: file
path: "/var/log/mongodb/mongodb.log"
logAppend: true
storage:
journal:
enabled: true
processManagement:
fork: true
net:
bindIp: 127.0.0.1
port: 27018
setParameter:
enableLocalhostAuthBypass: false
On this file, you need change systemLog.path, net.port and net.bindIp to your own. One important thing is we cannot run 2 versions at same time with same port. So here I set 27018 for older version.
Put it wherever you want, I did:
cp ~/mongod.conf /opt/mongodb/2.6.12/
DON’T RUN THIS because it will overwrite current mongodb version commands
$ export PATH=/opt/mongodb/2.6.12/bin:$PATH
Create data and log directories and set permission.
$ mkdir -p /data/db $ mkdir -p /var/log/mongodb
Running:
Now you can start 2.6 version with command.
$ /opt/mongodb/2.6.12/bin/mongod --fork --dbpath /data/db --config $ /opt/mongodb/2.6.12/mongod.conf
It is too long, isn’t it? So make it shorter with alias.
$ sudo nano ~/.bash_profile or $ sudo nano ~/.bashrc
and add this to file
alias mongo26="/opt/mongodb/2.6.12/bin/mongo --port 27018" alias mongoRestore26="/opt/mongodb/2.6.12/bin/mongorestore --port 27018" alias mongoDump26="/opt/mongodb/2.6.12/bin/mongodump --port 27018" alias startMongo26="/opt/mongodb/2.6.12/bin/mongod --fork --dbpath /data/db --config /opt/mongodb/2.6.12/mongod.conf" alias stopMongo26="/opt/mongodb/2.6.12/bin/mongod --dbpath /data/db --shutdown" alias nanoMongo="nano /opt/mongodb/2.6.12/mongod.conf" alias tailMongo="tail -f /var/log/mongodb/mongod.log" alias tailMongo26="tail -f /var/log/mongodb/mongodb.log"
Apply these alias
$ source ~/.bash_profile or $ source ~/.bashrc
Now we can simply start mongodb version 2.6 by
$ startMongo26 about to fork child process, waiting until server is ready for connections. forked process: 1049481 child process started successfully, parent exiting
Run shell version 2.6
$ mongo26 MongoDB shell version: 2.6.12 connecting to: 127.0.0.1:27018/test >
Run shell current version
$ mongo
MongoDB shell version v4.4.3
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("3ae6094f-86dc-4741-aa72-1e48efc5273a") }
MongoDB server version: 4.4.3
>
3. Troubleshooting
- Cannot start by
startMongo26please check log at/var/log/mongodb/mongod.log
about to fork child process, waiting until server is ready for connections. forked process: 1049890 ERROR: child process failed, exited with error number 100
Check log at /var/log/mongodb/mongod.log
- If log has this line:
2021-02-26T15:51:13.493-0700 [initandlisten] exception in initAndListen: 10309 Unable to create/open lock file: /data/db/mongod.lock errno:13 Permission denied Is a mongod instance already running?, terminating
This is because your current user doesn’t have permission to run and write into this directory. You can set permission to /data/db or change directory. I changed to ~/datamongo
$ /opt/mongodb/2.6.12/bin/mongod --fork --dbpath ~/datamongo --config $ /opt/mongodb/2.6.12/mongod.conf
- Do the same with error on
/var/log/mongodb/mongodb.log
Cannot shutdown by stopMongo26
There doesn't seem to be a server running with dbpath: /data/dbDo this:
$ mongo26 MongoDB shell version: 2.6.12 connecting to: 127.0.0.1:27018/test > use admin switched to db admin > db.shutdownServer() 2021-02-26T15:45:19.738-0700 DBClientCursor::init call() failed server should be down... 2021-02-26T15:45:19.742-0700 trying reconnect to 127.0.0.1:27018 (127.0.0.1) failed 2021-02-26T15:45:19.742-0700 warning: Failed to connect to 127.0.0.1:27018, reason: errno:111 Connection refused 2021-02-26T15:45:19.742-0700 reconnect 127.0.0.1:27018 (127.0.0.1) failed failed couldn't connect to server 127.0.0.1:27018 (127.0.0.1), connection attempt failed
Do step by step with my instruction you gonna be ok. Good luck and enjoy!!!
*My answer on stackoverflow: https://stackoverflow.com/a/66393820/3349931
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