Posted by Daniel Wachtel in Phoenix,
updated on 10 October, 2020
Introduction
I wanted to add an RSS feed to this blog but decided that instead of installing a dependency I'll build one myself! Here's how you can set one up in a Phoenix application:
Creating the RSS view
First let's define a new route in lib/your_app_web/router.ex
...
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Posted by Daniel Wachtel in Rails,
updated on 06 September, 2020
Introduction
These are the configurations I use to deploy a Rails 6 app. Note that this is a small hobby app so I'm using docker-compose
to deploy it, for more serious apps you'd want to use docker swarm
or kubernetes
. If you don't have a server ready or docker
and docker-compose
installed on your local dev machine then have a read through this blog post first.
For this build I'm not going to dockerize NGINX as I have it installed on the server.
Create a Dockerfile
Step one is to create a Dockerfile
in the root directory of your project. For this build I'll be using...
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Posted by Daniel Wachtel in Phoenix,
updated on 06 September, 2020
Introduction
If you come from a Ruby on Rails background you might be used to having view helpers such as number_with_delimiter
up your sleeve and ready to use. Here's how to configure functions that are accessible in your Phoenix views:
Create a helper module
I usually create a helpers
directory under the my_app_web
directory. Next create a new module, let's call it application_helper.ex
...
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Posted by Daniel Wachtel in Phoenix,
updated on 27 August, 2020
The other day I ran my blog through GTmetrix website speed test and realised that I had turned on GZIP compression for static assets, but not for dynamic content. This is easily fixed however with 2 lines of code:
Enabling GZIP compression for static assets
To enable compression for static assets add gzip: true
(or gzip: Mix.env == :prod
for production only) to the Plug.Static
config in...
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Posted by Daniel Wachtel in DevOps,
updated on 03 May, 2020
Introduction
I had a couple of WordPress sites I wanted to dockerize and move over to my new server. This is the configuration I used to deploy them to my new server as described here.
I'm using the official wordpress
and mysql
images and don't need to build anything, so all I need to deploy the app is a docker-compose.yml
file and a couple of .env
files.
The docker-compose.yml file
I'm using the wordpress:5.4.1
(also tagged as wordpress:5.4.1-apache
) which uses an Apache server and serves the app on port 80. Port 8080 is mapped to my host...
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Posted by Daniel Wachtel in DevOps,
updated on 03 May, 2020
Introduction
Matomo (formerly known as Piwik) is an open source web analytics application that runs on PHP and a MySQL database, which I've been using instead of Google Analytics.
This is the configuration I use to deploy it as described here.
I'm using the official matomo
and mariadb
images and don't need to build anything, so all I need to deploy the app is a docker-compose.yml
file and a .env
file.
The docker-compose.yml file
I'm using the matomo:3.13.5
(also tagged as matomo:3.13.5-apache
) which uses an Apache server and serves the app on port 80...
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Posted by Daniel Wachtel in SSH,
updated on 30 April, 2020
I recently ran into the following error when trying to deploy remotely using docker-compose:
ERROR: Secsh channel 14 open FAILED: open failed: Connect failed
The issue is that the default SSH connections allowed is set to 10 and the command I was running was trying to use more connections then that.
Fixing the error
To fix this error you'll need to connect to your server...
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Posted by Daniel Wachtel in ZSH,
updated on 25 April, 2020
I recently ran into an issue after installing docker
and adding it to the plugins section in my .zshrc
file, autocomplete just wouldn't work (even though oh-my-zsh
plugin installation is so straightforward).
First make sure your syntax is OK, plugins should be separated by a space only and no commas:
plugins=(git docker docker-compose)
After reloading my zshrc
file with source ~/.zshrc
it still didn't work. I had to delete ZSH's .zcompdump
file...
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Posted by Daniel Wachtel in DevOps,
updated on 01 September, 2020
Introduction
These are the configurations I use for a Phoenix 1.4 app to deploy it to production using docker-compose contexts. If you don't have a server ready or docker
and docker-compose
installed on your local dev machine then have a read through that blog post first.
For this build I'm not going to dockerize NGINX as I have it installed on the server.
Create a Dockerfile
Step one is to create a Dockerfile
in the root directory of your project. For this build I'll be using elixir:X.X.X-alpine
image. alpine
is a much slimmer Linux docker image and will reduce our overall image sizes.
# ./Dockerfile
# Extend from the official Elixir image
FROM elixir:1.10.2-alpine
# Install required libraries on Alpine
# note: build-base required to run mix “make” for
# one of my dependecies (bcrypt)
RUN apk update && apk upgrade && \
apk add postgresql-client && \
apk add nodejs npm && \
apk add...
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Posted by Daniel Wachtel in DevOps,
updated on 06 September, 2020
Introduction
In this post we'll go over setting up a DigitalOcean Droplet to run multiple dockerized apps which we'll deploy to production using docker-compose
and docker contexts. We'll also set up NGINX reverse proxies for the apps we want to expose externally.
Using docker-compose
with contexts let's us run builds and deployments to remote servers from our local dev machine. This feature is available to docker-compose
starting with release 1.26.0-rc2
.
Note: this feature is relatively easy to use, especially if you've used docker-contexts
before however is more suited for deploying small/hobby apps to a single server. There will be some downtime as you're releasing new builds (generally a few seconds) so if you require zero downtime deployments, rolling updates and multiple server orchestration then you should look at docker's swarm feature or kubernetes.
Create a DigitalOcean Droplet
First sign up at DigitialOcean and create a new project. You can name the project anything you want...
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