Error while installing mongodb on ubuntu 16.04

Question

I've already seen these answers, so please don't link em in solutions:

Installing MongoDB on Ubuntu 16.04 https://unix.stackexchange.com/questions/220467/mongodb-unmet-dependencies/220483 can't install mongodb on ubuntu 16.10 https://www.digitalocean.com/community/tutorials/how-to-install-mongodb-on-ubuntu-16-04

I have already added the required repository for ubuntu 16.04

When I run sudo apt-get install -y mongodb-org, it throws the error:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
linux-headers-4.4.0-93-generic : Depends: linux-headers-4.4.0-93 but it is not going to be installed
mongodb-org : Depends: mongodb-org-shell but it is not going to be installed
               Depends: mongodb-org-server but it is not going to be installed
               Depends: mongodb-org-mongos but it is not going to be installed
               Depends: mongodb-org-tools but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

And on running apt-get -f install, I get the following error:

Unpacking linux-headers-4.4.0-93 (4.4.0-93.116) ...
dpkg: error processing archive /var/cache/apt/archives/linux-headers-4.4.0-93_4.4.0-93.116_all.deb (--unpack):
unable to create '/usr/src/linux-headers-4.4.0-93/arch/xtensa/include/asm/pgtable.h.dpkg-new' (while processing './usr/src/linux-headers-4.4.0-93/arch/xtensa/include/asm/pgtable.h'): No space left on device
No apport report written because the error message indicates a disk full error
                                                                          dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
/var/cache/apt/archives/linux-headers-4.4.0-93_4.4.0-93.116_all.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

And the same thing continues when I try to install it again.

Can anyone explain what's this error and how to install it ?

Update:

Running df -h gives:

Filesystem      Size  Used Avail Use% Mounted on
udev            487M     0  487M   0% /dev
tmpfs           100M   12M   88M  12% /run
/dev/xvda1      7.8G  5.3G  2.1G  72% /
tmpfs           496M     0  496M   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           496M     0  496M   0% /sys/fs/cgroup
tmpfs           100M     0  100M   0% /run/user/1000

Running df -i gives:

Filesystem     Inodes  IUsed  IFree IUse% Mounted on
udev           124466    360 124106    1% /dev
tmpfs          126788    480 126308    1% /run
/dev/xvda1     524288 520744   3544  100% /
tmpfs          126788      1 126787    1% /dev/shm
tmpfs          126788      6 126782    1% /run/lock
tmpfs          126788     16 126772    1% /sys/fs/cgroup
tmpfs          126794      4 126790    1% /run/user/1000

Answer 1

Run the below command:

sudo apt-get -f install

And then try running sudo apt-get install -y mongodb-org