Nanny-level hands-on teaching you how to use HTTP to connect to Docker remotely?

Why remote access to Docker?

• You can use the http protocol to obtain data in json format, which is very convenient
• Use code to control mirroring, so easy

How to configure it for remote access?

Create or modify this file: if not, add it~

/etc/systemd/system/docker.service.d/override.conf

write the following

##Add this to the file for the docker daemon to use different ExecStart parameters (more things can be added here)
[Service]
ExecStart=
ExecStart=/usr/bin/dockerd

Note: By default when using systemd, docker.service is set to: ExecStart=/usr/bin/dockerd -H fd://, which will override any hosts written to daemon.json. By defining ExecStart in the override.conf file as just: ExecStart=/usr/bin/dockerd, this will use the hosts set in daemon.json. The first line ExecStart= in this file is required because it will be used to clear the default ExecStart parameter. If you modify the docker.service file instead of creating override.conf, then the next time systemd restarts, the docker.service file will also be recreated.

Then write the following in /etc/docker/daemon.json (if not, create a new one)

{
  "hosts":[
    "unix:///var/run/docker.sock",
    "tcp://0.0.0.0:2375"
  ]
}

Edit the docker.server file

vi /usr/lib/systemd/system/docker.service

Find the [Service] node, modify the ExecStart attribute, and add

-H tcp://0.0.0.0:2375

reboot

test access

open port

Open firewall ports

firewall-cmd --add-port=2375/tcp --permanent

important

firewall-cmd --reload

Test access, you're done~

http://192.168.33.129:2375/version

I will write here today~

• Friends, (￣ω￣(￣ω￣〃 (￣ω￣〃)ゝ See you tomorrow~~
• Everyone be happy every day

Everyone is welcome to point out where the article needs to be corrected~
Learning is endless, cooperation is win-win

Welcome the little brothers and sisters passing by to put forward better opinions~~