Recently, I started working with Docker on various projects. So here’s just a bunch of commands I’ve found to be quite helpful while troubleshooting errors with Docker.

# List all containers
docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
project_web         latest              f4ef8d25add1        5 weeks ago         414MB
<none>              <none>              9134bb24f1c0        5 weeks ago         414MB
<none>              <none>              40fe35f4a3d4        5 weeks ago         413MB
<none>              <none>              3b0f34da4fb8        5 weeks ago         415MB
<none>              <none>              c0db2948ac36        5 weeks ago         341MB
<none>              <none>              6eb6441acb58        5 weeks ago         349MB
elixir              1.5.1-alpine        2e25543d4c8b        6 weeks ago         80.6MB
postgres            9.4                 f5a204444914        8 weeks ago         263MB
kamui/postgresql    latest              580b3438c359        3 years ago         387MB

# List all running Docker containers
CONTAINER ID     IMAGE            COMMAND                 CREATED          STATUS           PORTS                    NAMES
b43f7ef41d7f     hades_web        "/app/build.sh && ..."  3 hours ago      Up 3 hours       0.0.0.0:9999->4000/tcp   project_web_1
df54b187072b     postgres:9.4     "docker-entrypoint..."  3 hours ago      Up 3 hours       0.0.0.0:9998->5432/tcp   db

# Delete all containers
docker rm $(docker ps -a -q)

# Delete all images
docker rmi $(docker images -q)

Privileged mode

You can also start a Docker container in --privileged mode to unlock some advanced options, such as creating new network interfaces for a VPN, for example. Here’s how to check if a container is started in privileged mode:

docker inspect --format='' [CONTAINER_ID]

Useful tips

docker ps
docker logs -f [container_name]

docker ps
docker exec -it [container_name] /bin/bash

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Configure SSL Certificates on AWS EBS

#AWS #devops

Elastic Beanstalk is a fantastic way to deploy and manage web applications. Today, for most web apps, you'll need SSL certificates to encrypt data between users and your server. For this, we'll use **Let’s Encrypt** Certificate Authority which provides free SSL certificates and is supported by a wide array of browsers. To generate the certifica... Read more

20 Nov 2017 - 2 minute read

Docker tips

Privileged mode

Useful tips

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Configure SSL Certificates on AWS EBS