I am trying to install mongodb 3.2 into codio using the terminal and I am following the guide on their website here. (I'm new to mongodb and nosql)
I got to Step 4 Installing mongodb using this command:
sudo apt-get install -y mongodb-org
Got the following at the end:
..
The following packages will be upgraded:
mongodb-org
1 upgraded, 0 newly installed, 0 to remove and 51 not upgraded.
2 not fully installed or removed.
Need to get 3,554 B of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 http://repo.mongodb.org/apt/ubuntu/ trusty/mongodb-org/3.2/multiverse mongodb-org amd64 3.2.2 [3,554 B]
Fetched 3,554 B in 0s (249 kB/s)
(Reading database ... 37250 files and directories currently installed.)
Preparing to unpack .../mongodb-org_3.2.2_amd64.deb ...
Unpacking mongodb-org (3.2.2) over (3.2.1) ...
Setting up mongodb-org-server (3.2.2) ...
start: Job failed to start
invoke-rc.d: initscript mongod, action "start" failed.
dpkg: error processing package mongodb-org-server (--configure):
subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of mongodb-org:
mongodb-org depends on mongodb-org-server; however:
Package mongodb-org-server is not configured yet.
dpkg: error processing package mongodb-org (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
mongodb-org-server
mongodb-org
E: Sub-process /usr/bin/dpkg returned an error code (1)
Then I run
sudo service mongod start
or
sudo service mongodb start
Both commands will response with start: Job failed to start or mongodb: unrecognized service
Am I missing something here like e.g. mongodb requires other packages to be installed? following wrong guide version? do I need to create config file? if I do how? because it did not create one, or mongodb doesn't work on codio using the built-in terminal? Is mongodb-org-server already installed or running? I've been searching for exact or similar things, also tried different command but no luck.
This is because of the ulimit settings in the service script of mongod.
Mongodb recommends 64000 for 'open files' key in ulimit settings.
https://docs.mongodb.org/manual/reference/ulimit/#recommended-settings
In codio this is set to 4096.
run the below command in codio terminal and see the 'open files' setting.
ulimit -a
I don't think this value can be changed at OS level in codio. However, we can remove this setting (NOT recommended by MongoDb) from the upstart file.
Steps:
1. To keep it simple and less verbose, start with installing just mongodb-org-server instead of installing the complete mongodb-org.
sudo apt-get install -y mongodb-org-server
2. As we know it fails with errors - '..Job failed to start ..' bla..bla. Just ignore them for a min. Edit '/etc/init/mongod.conf' file as root in whatever editor you like. I like vim. :)
sudo vim /etc/init/mongod.conf
3. Comment out(type '#' at the beginning of the line) the line starts with 'limit nofile' as below. Then save and close the file.
#limit nofile 64000 64000
4. Now install the complete 'mongodb-org' package by running the command in terminal as shown below.
sudo apt-get install -y mongodb-org
5. Go ahead try mongo in terminal now. If the mongod service is running, it connects to the default db successfully.
Hope this helps.
Thank you.