DockerCon 2017 Demo Commands

add-container-inventory.sh

#!/bin/bash

RED='\033[0;31m'
ORANGE='\033[0;33m'
GREEN='\033[0;32m'
END='\033[0m'

CONTAINER_NAME="inventory-${RANDOM}"
SOURCE_IMAGE="${1}"
DESTINATION_IMAGE="${2}"

if [ -z ${SOURCE_IMAGE} ]; then
  echo -e "----> ${RED}You must provide at least one argument${END}"
  exit
fi

docker inspect puppet-inventory 2>&1 >/dev/null
if [ $? -eq 1 ]; then
  echo -e "----> ${ORANGE}Need a puppet-inventory volume to be created${END}"
  docker run --name puppet-inventory puppet/puppet-inventory 2>&1 >/dev/null
else
  echo -e "----> ${GREEN}Using existing puppet-inventory volume${END}"
fi

if [ "${SOURCE_IMAGE}" = "--help" ]; then
  echo "Add a static inventory to a Docker image
Usage:
    ${0} <source> [<destination>]
If no destination is passed then the original source image will be modified
and replaced.
This script will work for images based on most Linux-based images apart from those
using busybox or alpine derivates."
  exit

fi

# the second parameter is optional. If not passed then
# override the source image
if [ -z ${DESTINATION_IMAGE} ]; then
  echo -e "----> ${ORANGE}The destination image will be the same as the source image${END}"
  DESTINATION_IMAGE=${SOURCE_IMAGE}
fi

echo -e "----> ${GREEN}Generating inventory for image ${SOURCE_IMAGE}${END}"
docker run --volumes-from=puppet-inventory --name ${CONTAINER_NAME} ${SOURCE_IMAGE} /opt/puppetlabs/bin/puppet inventory > inventory.json
echo -e "----> ${GREEN}Saving inventory to temporary image ${CONTAINER_NAME}${END}"
docker cp inventory.json ${CONTAINER_NAME}:/inventory.json
echo -e "----> ${GREEN}Committing new image to ${DESTINATION_IMAGE}${END}"
docker commit ${CONTAINER_NAME} ${DESTINATION_IMAGE}
echo -e "----> ${GREEN}Cleaning up${END}"
docker rm ${CONTAINER_NAME} >> /dev/null
rm inventory.json

commands.txt

# Likely Commands
docker run --name puppet-inventory puppet/puppet-inventory
docker run --rm -it --volumes-from=puppet-inventory centos /opt/puppetlabs/bin/puppet inventory
docker run --rm -it --volumes-from=puppet-inventory centos /opt/puppetlabs/bin/puppet inventory > inventory.json
cat inventory.json | jq '.facts.operatingsystem'
cat inventory.json | jq '.resources[] | .resource + ": " + .title'
cat inventory.json | jq '.resources[] | select(.resource == "package") | [.title, .provider, .versions[0]]'
cat inventory.json | jq -r '.resources[] | select(.resource == "package") | [.title, .provider, .versions[0]] | @csv' > packages.csv
python csv2html.py

# Random Other Stuff I'm Playing With
docker run --rm -it --volumes-from=puppet-inventory centos /opt/puppetlabs/bin/puppet inventory facts
docker run --rm -it --volumes-from=puppet-inventory centos /opt/puppetlabs/bin/puppet inventory resources
docker run --rm --name puppet-inventory puppet/puppet-inventory cat /inventory.json | jq '.facts.operatingsystem'
docker run --rm centos-inventory cat /inventory.json | jq '.facts'
docker run --rm centos-inventory cat /inventory.json | jq '.facts.operatingsystem'
docker run --rm centos-inventory cat /inventory.json | jq '.resources[] | .resource + ": " + .title'
docker run --rm centos-inventory cat /inventory.json > inventory.json
cat inventory.json | jq '.resources[]'
cat inventory.json | jq '.resources[] | .resource + ": " + .title'
cat inventory.json | jq '.resources[] | .versions + ": " + .title'
cat inventory.json | jq '.resources[] | .resource + ": " + .title' | grep 'ssl'
cat inventory.json | jq '.resources[] | select(.title == "openssl-libs")'
cat inventory.json | jq '.resources[] | select(.resource == "package") | [.title, .provider, .versions[0]]'
cat inventory.json | jq -r '.resources[] | select(.resource == "package") | [.title, .provider, .versions[0]] | @csv' > packages.csv

csv2html.py

# modified from http://victoriaxie.com/eng/2015/9/10/a-simple-way-to-convert-csv-data-into-a-sortable-bootstraphtml-table-using-python

import csv


def main(csv_file='packages.csv'):
    csv_data = open_csv(csv_file)
    write_html_from_csv_data(csv_data)


def open_csv(csv_file):
    with open(csv_file, 'r') as csv_data:
        return list(csv.reader(csv_data))


def write_html_from_csv_data(csv_data, output='output.html'):
    with open(output, 'w') as html:
        html.write('''<!-- Latest compiled and minified CSS -->
                   <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-table/1.8.1/bootstrap-table.min.css">

                   <!-- Latest compiled and minified CSS -->
                   <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
                   ''')
        html.write('<table data-toggle = "table" data-pagination = "true">\r')

        html.write('\t<thead>\r\t\t<tr>\r')
        for col in ['package', 'provider', 'version']:
            html.write('\t\t\t<th data-sortable="true">{0}</th>\r'.format(col))
        html.write('\t\t</tr>\r\t</thead>\r')
        html.write('\t<tbody>\r')

        for row in csv_data:
            html.write('\t\t<tr>\r')
            for col in row:
                html.write('\t\t\t<td>{0}</td>\r'.format(col.strip('\\"')))
            html.write('\t\t</tr>\r')

        html.write('\t</tbody>\r')
        html.write('</table>\r')
        html.write('''
                   <!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
                   <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>

                   <!-- Latest compiled and minified JavaScript -->
                   <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>

                   <!-- Latest compiled and minified JavaScript -->
                   <script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-table/1.8.1/bootstrap-table.min.js"></script>
                   ''')


if __name__ == "__main__":
    main()