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I have container which in logs sometimes write key word which is for me important, and I want to highlight this word in color in my terminal, but also important is still see all content logs in real time (--follow). I just tried command
docker logs -f my_app --tail=100 | grep --color -E '^myWord'
but not working.
So exist some way to do this ?
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First of all, to list all running containers, use the docker ps command. Then, with the docker logs command you can list the logs for a particular container. Most of the time you'll end up tailing these logs in real time, or checking the last few logs lines.
The docker logs command shows information logged by a running container. The docker service logs command shows information logged by all containers participating in a service. The information that is logged and the format of the log depends almost entirely on the container's endpoint command.
The -t (or --tty) flag tells Docker to allocate a virtual terminal session within the container. This is commonly used with the -i (or --interactive) option, which keeps STDIN open even if running in detached mode (more about that later).
I use ccze. as @aimless said, grc is the great utility also. It easy to install by sudo apt install ccze for debian/ubuntu-like OS
But if you want to colorize stderr, you need to redirect stderr output to stdout. For example:
docker logs -f my-app 2>&1 | ccze -m ansi
arg -m ansi helps if you want to scroll output normally
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