The very first day I started using Docker I used docker info to verify the server was installed correctly on my Mac, and never used it again! 😅
But sometimes it's good to have this simple command in your toolbox to get information quickly. Here are my top 3 uses for docker info:
1. To verify "if" and "which" docker engine is running
It's obvious, I know, but docker info can tell you in the simplest way that the Docker daemon is alive and kicking and that its API is responding correctly.
It's also a quick way to check what Docker version you're running on
❯ docker info | head
Client:
Debug Mode: false
Server:
Containers: 29
Running: 22
Paused: 0
Stopped: 7
Images: 58
Server Version: 19.03.12
2. System resources limit: CPU & Memory
Are your containers running slowly or not starting at all? Check if your Docker daemon is running with CPU or Memory limits!
❯ docker info | grep -e CPU -e Memory
CPUs: 2
Total Memory: 1.945GiB
3. Check engine's proxy settings
If you run Docker in a corporate network, is very common that you need to connect to the internet via a proxy server. If you get connection timeouts it's likely that you don't have the right settings.
❯ docker info | grep -e Proxy
HTTP Proxy: http://proxy.mycompany.com:3128
HTTPS Proxy: http://proxy.mycompany.com:3128
No Proxy: localhost,127.0.0.1
Did you know...
you can print the full list of information in JSON format with this command?
# Using "| jq" to prettify the json output, though not mandatory
❯ docker info -f '{{json .}}' | jq
Do you use docker info often?
Tell me how in the comments!
Don't forget to follow me if you want to see more content like this!
Top comments (0)