Docker solution for logging in without root privileges

When you use the docker command for the first time, you will be prompted for permission issues.

Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get http://%2Fvar%2Frun%2Fdocker.sock/v1.37/containers/json?all=1: dial unix /var/run/docker.sock: connect: permission denied

Solution:

1. Use sudo to obtain root privileges;

Second, add the current user to the docker user group;

sudo groupadd docker #Add docker user group sudo gpasswd -a $USER docker #Add the logged in user to the docker user group newgrp docker #Update user group docker ps #Test whether the docker command can be used normally with sudo

Supplement: Problem and solution of root user being unable to log in when deploying mysql with docker

Today, when using the mysql:5.7 docker image, I found that I could not log in using the root user after starting the container. Here are the steps:

1. Pull the mysql5.7 image

$ docker pull mysql:5.7

2. Create a bridge

$docker network create -d bridge blog_network

3. Run the mysql container

 docker container run -it --rm --name mysql --network blog_network -v $PWD/data/myscript/:/docker-entrypoint-initdb.d/ --env MYSQL_ROOT_PASSWORD=123456 -d mysql:5.7

4. Enter the container

$ docker exec -it mysql bash
#mysql -u root -p

The password 123456 set in step 3 returns the result:

Enter password: 
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

5. The solution is as follows

Step 2: Run the container command and modify it as follows:

 $ docker container run -it --detach --name mysql --network blog_network -p 3306:3306 -v $PWD/data/myscript/:/docker-entrypoint-initdb.d/ --env MYSQL_RANDOM_ROOT_PASSWORD=yes mysql:5.7
$ docker container logs mysql| grep 'GENERATED ROOT PASSWORD: ' | awk -F': ' '{print $2}'

A string will be returned, which is the actual password of our root user: log in with this password and then change the root user password.

ooli0OhMoo1Ieg1CeiYieSohleeVi1oh
$mysql -u root -p

After entering mysql using the above password, you need to change the password.

mysql>update mysql.user set authentication_string=password('newpassword') where user='root';
mysql>flush privileges;
mysql>exit

As shown in the figure:

The above is my personal experience. I hope it can give you a reference. I also hope that you will support 123WORDPRESS.COM. If there are any mistakes or incomplete considerations, please feel free to correct me.