cmsj_docker_tool.sh

cmsj_docker_tool.sh

#!/bin/bash
# A simple tool for managing docker containers
# Drop this in your path somewhere and chmod +x it, then create symlinks to it with the names:
#   clog - show the logs for a container
#   cblip - restart a container and then show its logs
#   cgo - run a command inside a container (defaults to /bin/sh)
# Usage for each is: <command> CONTAINER_NAME

CMD="$(basename $0)"

if [ "$1" == "" ]; then
  echo "Usage: ${CMD} CONTAINER_NAME"
  exit 1
fi

SEARCH_TERM="$1"
RESULT=""

function find_container() {
  # First look for containers that start with the given name
  RESULT="$(docker ps -a --format "{{.Names}}" | grep "^${SEARCH_TERM}$" | head -1)"

  if [ "${RESULT}" == "" ]; then
      # If no exact match, look for containers that contain the given name
      RESULT="$(docker ps -a --format "{{.Names}}" | grep "${SEARCH_TERM}" | head -1)"
  fi

  echo "${RESULT}"
}

RESULT=$(find_container "${SEARCH_TERM}")

if [ "${RESULT}" == "" ]; then
  echo "Container ${SEARCH_TERM} not found."
  exit 1
fi

if [ "${CMD}" == "cblip" ]; then
  docker restart "${RESULT}" &
  CMD="clog" # Reuse the clog command below to show the logs
fi

if [ "${CMD}" == "clog" ]; then
  journalctl -fb CONTAINER_NAME="${RESULT}"
elif [ "${CMD}" == "cgo" ]; then
  shift 1
  ARGS="${*:-/bin/sh}"
  docker exec -ti "${RESULT}" ${ARGS}
fi