Docker daemon socket at unix:///var/run/docker.sock: /var/run/docker.sock: connect: permission denied

If you are getting the following error 

Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get "http://%2Fvar%2Frun%2Fdocker.sock/v1.24/containers/json": dial unix /var/run/docker.sock: connect: permission denied

while executing #Docker #Commands then please try the following steps.

1. Add current user to the docker group:

    sudo usermod -a -G docker $USER

    The above command will add the current user to the docker group.

2. Change the permission of docker.sock

    sudo chmod 666 /var/run/docker.sock

3. Also check If the gid of the second command is not in the list of gids of the first command, you need to run the task as root or add the user to the group displayed by the second command.

    list group ids of the current user: id --groups

    show UID: gid of docker.sock: stat /var/run/docker.sock --format '%u:%g'

HDD SATA NVM SSD

 #MechanicalDisk Drive days are over !! Manufacturers must migrate to SSD and to other non-volatile fast disks/memories.

Laptops/Desktop fitted with these Non-volatile and nonmechanical disks are not only faster but also power-efficient, it very easily makes a struggling laptop/desktop into a well-performing machine.
Just by replacing a mechanical disk with an #SSD or #nvmestorage your existing laptop/desktop machine become next-gen and you feel the better performance.
The following graph says it all.


#iot #innovation #DiskDrive #HDD #ssds #SSD #NVM #mechanical

Python 3: ImportError “No Module named Setuptools”

If you receive this error please try the following command:

  sudo apt-get install python3-setuptools

For other versions like python2 run the following command:

  sudo apt-get install python-setuptools

Permission denied while trying to connect to the Docker daemon socket

Try the following command in the terminal after installing Docker.

• sudo groupadd docker

• sudo usermod -aG docker $USER

• newgrp docker

• docker ps              

• Either reboot or log off and login and done.

Ubuntu Bluetooth doesn't Turn On

 If you are also facing this issue that suddenly you are not able to turn on your Bluetooth in Ubuntu or any other Linux distro then you can try following, I got it fixed using the following:

Open terminal and run following command:

sudo rmmod btusb

sudo modprobe btusb

module_stderr": "sudo: a password is required

 This error appears when we try to run an ansible script with a user that is not enabled for passwordless sudo. 

On this error we have two options with us:

1. Make the user run sudo without a password, for which open /etc/sudoers and put the following line for the user for which passwordless ssh is needed"

Then 

shashwat          ALL=(ALL:ALL) NOPASSWD: ALL

#Note: Add this line to the end of the file

Save and Exit and run the ansible script again.

2. option is to enable ansible to ask sudo password on command line. For which you need to pass parameter

--ask-become-pass or -K 

And this will ask for password on command line and ansible will run sucessfully.