How to easily manage multiple WordPress sites in Docker using Demyx

22 Comments

1. Demyx looks very interesting, I am going to check it on weekend 😉
   Do you also consider of adding features like only html site container (I’m a fan of Hugo static) or php+mysql containers?

   • Hi Arek,

     Yes I’m planning to implement support for html/php containers as soon as the commands for WordPress containers are stable. It might happen very soon! I did plan ahead and put the folder structure as a placeholder:

     

     • So I tested a script and it is great, in my opinion one of the best for automation of docker and wordpress.
       But after a week, when I was trying to add another domain to the server I’m receiving message like this when I type any of demyx command:
       “error during connect: Get http://demyx_socket:2375/v1.40/containers/json: dial tcp: lookup demyx_socket on 127.0.0.11:53: no such host”
       Do you know what can cause this issue?

       • Hi, I’ve updated the socket. In the future, you shouldn’t have these issues anymore. Can you run this on the host?

         demyx update –system

         If that doesn’t work, then feel free to ask for help in real time in my IRC channel: https://webchat.freenode.net/?channel=#demyx

2. Hi,

   saw your post in the roots.io forum and looked through your code in github.
   Very nice, good work. Really like your design of your commands and the aspect of bundling tasks.
   I’m a big fan of automation scripts and played intensively with ansible for provisioning for quite a while.

   Because I looking for something like demyx, I wonder how you manage your developments and realize your deployment strategy. Are you doing your dev work and customizations via code-server directly on the server or do you make your work locally and push/sync it via git oder sftp?
   Lookin forward to hear from you.

   • Hi aarkiin,

     Thank you for the compliments! I try to be as neat as I can when coding and commenting 😊. I do everything in code-server and remotely too! I haven’t dev locally on my laptop for a long time now. As for deployment, I wrote my own bash script that chains commands.

     #!/bin/bash

     cd /demyx/web/app/themes/demyx

     # Disable module.hot.accept()
     sed -i "s|module.hot.accept|//module.hot.accept|g" /demyx/web/app/themes/demyx/resources/assets/scripts/main.js

     if [[ "$1" = push ]]; then
     git push
     else
     yarn build:production

     # Exit if build fails
     if [[ "$?" != 0 ]]; then
     echo '############################'
     echo '# #'
     echo '# BUILD FAILED! #'
     echo '# #'
     echo '############################'
     exit 1
     fi

     composer install --no-dev
     git add .
     git commit -m "$1"
     git push
     composer install
     fi

     # Enable module.hot.accept()
sed -i "s|//module.hot.accept|module.hot.accept|g" /demyx/web/app/themes/demyx/resources/assets/scripts/main.js

     The script is chmoded and then executed via ~/deploy. If I don’t have to compile any css/js then I just commit that single file then ~/deploy push, else, it would compile. Here’s my .gitignore:

     # Include your project-specific ignores in this file
# Read about how to use .gitignore: https://help.github.com/articles/ignoring-files
.cache-loader
.editorconfig
.eslintrc.js
.stylelintrc.js
CHANGELOG.md
CODE_OF_CONDUCT.md
LICENSE.md
README.md
phpcs.xml
yarn.lock
composer.json
composer.lock
package-lock.json
package.json
node_modules
npm-debug.log
yarn-error.log
resources/assets

     • Hi,
       Been learning Docker for the past week and what got me into it in the first place was the “dev/prod parity”, which leads me to my question: how do I setup demyx for local development?
       I’m really new to Docker so might I also ask if there is a philosophy behind why you would do everything remotely instead? Hoping you could clarify these things for me.

       • Hi Abe,

         Demyx at the moment doesn’t support non SSL setup but that will have to change. The philosophy behind Demyx being SSL first is because I’ve been working remotely for years now on my dev servers. So it made sense to me that SSL has to be priority when working remotely.

         Demyx is almost a year old, I started this project with zero knowledge of how Docker worked, so I just kept learning and learning. Once you know how things are structured, you can easily modify Demyx by making custom Dockerfile or modifying the docker-compose.yml. If you’re adventurous enough, you can fork my repo and change the bash scripts.

         I hope this clarifies things for you. If not, feel free to reach out to me in the other channels. IRC is probably the effective and fastest way to communicate directly with me.

3. Intesting project. Does it mean demyx is only suited for wordpress?
   can’t be used for other PHP app that’s not wordpress?

   • Hey thanks for checking my project. At the moment, it’s focused on WordPress for now but there are placeholders I’ve added for HTML and PHP sites. Sorry I’ve missed the opportunity to say hi to you in the #demyx channel; I’m usually online after 7am PST.

4. Is it possible to setup other dockers with your script?
   I’m hoping to install Bitwarden using your script. Is it possible? And what would you suggest be the best way to build such a docker setup with demyx?

   • Yes of course it’s possible. In one of my servers, I have other Docker images running alongside the demyx stack. Some non-demyx containers running are Rocket Chat, The Lounge, Nextcloud, etc.

     All you would need is to use the same demyx network in your docker-compose.yml and the right Traefik labels. Here’s an example of my The Lounge docker-compose.yml:

     
version: "2.4"
services:
thelounge:
container_name: thelounge
image: demyx/thelounge
cpus: .5
mem_limit: 512m
restart: unless-stopped
volumes:
- thelounge:/var/opt/thelounge
labels:
- "traefik.enable=true"
- "traefik.http.routers.thelounge-http.rule=Host(`domain.tld`)"
- "traefik.http.routers.thelounge-http.entrypoints=http"
- "traefik.http.routers.thelounge-http.middlewares=thelounge-redirect"
- "traefik.http.routers.thelounge-https.rule=Host(`domain.tld`)"
- "traefik.http.routers.thelounge-https.entrypoints=https"
- "traefik.http.routers.thelounge-https.tls.certresolver=demyx"
- "traefik.http.middlewares.thelounge-redirect.redirectscheme.scheme=https"
networks:
- demyx
volumes:
thelounge:
name: thelounge
networks:
demyx:
name: demyx


5. Would it be possible to run demyx as a service on a docker swarm?

   • Hi Edson,

     Unfortunately Demyx wasn’t tested on a swarm environment; feel free to fork it and experiment.

     And also, thank you for the coffee!

6. Hi there,

   This is a very interesting project that caught my attention for a simple solution to deploy multiple wp websites using hassle-free docker to orchestrate containerisation of each webapp. I have not any similar projects with the functionality and implementations of services that make the whole deployment more manageable and easy to monitor.

   I have a question/problem which is not letting me able to adopt this system completely. Please help me with the following:

   How do you handle multiple websites on a single IP? I am able to only create and access websites created via using the ip address of the host machine. I am not able to access any sites via defining a hostname. How do you point DNS to hostname to multiple different wordpress on the same IP? If I run ‘demyx run bedrocks.test –stack=ols-bedrock’ the process of creation and running the container completes, however I am not able to access the website at bedrocks.test. I have installed demyx on a proxmox/vmware debian server inside my home lab. I would migrate to developing on the cloud but I’m not sure how to handle multiple domains and subdomains. How does traefik fit into all this?

   In principle installing demyx on a server from cloud platforms like Digital Ocean should be the same as installing demyx on a local server in home lab.

   Let me know how I can better understand this.

   Best,
   Mehul

   • Hi Mehul,

     Let me answer some of your questions.

     – How do you handle multiple websites on a single IP?

     You would have to use a reverse proxy service like Traefik, which Demyx is currently setup for.

     – How do you point DNS to hostname to multiple different wordpress on the same IP?

     Same answer as the question before.

     – I have installed demyx on a proxmox/vmware debian server inside my home lab. I would migrate to developing on the cloud but I’m not sure how to handle multiple domains and subdomains. How does traefik fit into all this?

     Demyx is currently configured for actual remote KVMs. Demyx in a local environment is currently not supported but feel free to modify it since it’s open source.

7. Hello ! Just in case I’m not the only one interested, I had some hard time modifying php post_max_size parameter (although creating a website with demyx was initially amazingly easy – thank you so much for this tool).

   I finally managed to do it, here is the procedure :

   In the CLI (on the machin where demyx was installed), use :
   demyx edit SITENAME

   Then all you have to do is change the value DEMYX_APP_UPLOAD_LIMIT. This will change the required parameters in php.ini, including post_max_size, as soon as you “refresh” your website, using demyx refresh SITENAME

   • Yes that’s correct. The site’s container will be recreated.

8. I have some queries when my domain comes from cloudflare does not aceta sends a page error not registered on the other hand in my case I am using a multi site configuration in your domain and I can not access my south domain you can help me with that.

   • Run: demyx log traefik -e

     Paste here or email to [email protected]

9. how can i add this extension

   Sorry, PhastPress requires a PHP extension that is not installed.

   The PDO extension needs to be installed with the SQLite3 database driver available.
   Currently we’re getting this error: could not find driver

   Ask your hosting provider to install the PDO_SQLITE extension, or downgrade to PhastPress 2.1.

   • Hi, you can clone my WordPress repo and modify the Dockerfile redirectly then build the image in that server then demyx compose up the affected site.