Methods for obtaining information on Docker container infrastracture?

Question

I want to make a script that assesses Docker infrastructure and documents processes that are running there.

The first method I use is: docker inspect <container_id> | jq '.[].Args' and grep processes from there (php-fpm for example).

The second is: docker top <container_id> | awk '{$1=$2=$3=$4=$5=$6=$7=""; print $0}' | sed 's/^\s*//g'

Commands after pipeline help to build output for parsing.

What are other methods of obtaining information on Docker infrastructure?

Answer 1

#!/bin/bash

# Function to inspect a container
inspect_container() {
  local container_id=$1
  echo "Inspecting container: $container_id"
  
  echo "Container Configuration:"
  docker inspect "$container_id" | jq '.[].Config'
  
  echo "Container State:"
  docker inspect "$container_id" | jq '.[].State'
  
  echo "Container Network Settings:"
  docker inspect "$container_id" | jq '.[].NetworkSettings'
  
  echo "Container Processes:"
  docker top "$container_id" | awk '{$1=$2=$3=$4=$5=$6=$7=""; print $0}' | sed 's/^\s*//g'
  
  echo "Container Logs:"
  docker logs "$container_id" | tail -n 20  # Show last 20 lines of logs
}

# List all containers and inspect each one
containers=$(docker ps -q)
for container in $containers; do
  inspect_container "$container"
done