Upgrading mongodb has no effect and still shows the old version

Following are the commands which I used to upgrade my mongodb version from 2.6.9 to latest, but its still showing me the previous version. Let me know what I am doing wrong with the upgrading process. The problem is that mongod -version still shows the old version installed after upgrade.

Docs which I refer to - Mongodb Docs

Steps I followed -

• sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 7F0CEB10
• echo "deb http://repo.mongodb.org/apt/ubuntu "$(lsb_release -sc)"/mongodb-org/3.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.0.list
• sudo apt-get update
• sudo apt-get install -y mongodb-org

Result -

Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be upgraded:
  mongodb-org
1 upgraded, 0 newly installed, 0 to remove and 139 not upgraded.
Need to get 3,608 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/3.0/multiverse mongodb-org amd64 3.0.2 [3,608 B]
Fetched 3,608 B in 0s (18.3 kB/s)      
(Reading database ... 298790 files and directories currently installed.)
Preparing to unpack .../mongodb-org_3.0.2_amd64.deb ...
arg: upgrade
Unpacking mongodb-org (3.0.2) over (2.6.9) ...
Setting up mongodb-org (3.0.2) ...

After this I re started the service - sudo service mongod restart

But still its showing me version 2.6.9 Let me know what I am doing wrong here..or missed any step ?

Solution 1:

I'm in the exact same situation, followed the exact same steps, and had the same issue.

What worked for me was:

Uninstalling:

sudo service mongod stop
sudo apt-get purge mongodb-org*

Do NOT remove data directories - all your data will be lost if you do.

Note: Calling sudo apt-get purge mongodb-org* deletes the mongod.conf file. In case you want to keep this file after the update, make sure you create a backup copy of it and use it after the new version has been installed.

Then install mongodb with:

sudo apt-get install -y mongodb-org

This assumes that you've already performed the previous installation steps (importing the public key, creating a list file, reloading local package database) as you've stated.

Solution 2:

[Disclaimer] Before going into upgrade consider that moving from 2.6 to 3.+ requires an update on storage files. Same if you are updating from 3.2 to 3.4 or 3.4 to 3.6. Important: You can't directly upgrade from 3.2 to 3.6, for example. You must upgrade "step by step" 3.2-->3.4-->3.6. See this question/answer for details.

This is necessary if you want to recover your old DBs

As of writing 3.6 is the latest version of MongoDB. Some details here

Beware that changing between versions also regards some syntax in .conf file.

[Procedure] A more general framework for updating is to follow the typical procedure as shown here, but point to "Install a specific release of MongoDB" part of this guide as you already have MongoDB installed.

An example on Ubuntu 14.04:

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv EA312927
echo "deb http://repo.mongodb.org/apt/ubuntu trusty/mongodb-org/3.2 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.2.list
sudo apt-get update
sudo apt-get install -y mongodb-org=3.2.18 mongodb-org-server=3.2.18 mongodb-org-shell=3.2.18 mongodb-org-mongos=3.2.18 mongodb-org-tools=3.2.18

Solution 3:

Run this:

sudo apt-get update 
sudo apt-get --only-upgrade install mongodb-org mongodb-org-mongos mongodb-org-server mongodb-org-shell mongodb-org-tools

Solution 4:

You should update each package manually. So try:

dpkg -l | grep mongo

ii  mongodb-org                              3.2.10                                      amd64        MongoDB open source document-oriented database system (metapackage)
ii  mongodb-org-mongos                       3.2.10                                      amd64        MongoDB sharded cluster query router
hi  mongodb-org-server                       3.2.10                                     amd64        MongoDB database server
ii  mongodb-org-shell                        3.2.14                                     amd64        MongoDB shell client
ii  mongodb-org-tools                        3.2.14                                     amd64        MongoDB tools

and then update each pakage manually

sudo apt-get install mongodb-org mongodb-org-mongos mongodb-org-server mongodb-org-shell mongodb-org-tools