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em.0x45.cz/content/posts/zola-website-deployment-with-drone-ci/index.md
2024-05-06 12:30:55 +02:00

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title = "Zola website deployment with Drone CI"
date = 2022-09-28
[taxonomies]
categories = ["Linux"]
[extra]
author = "Emil Miler"
+++
NOTE: This article is outdated and superseded by [native Gitea Actions](@/posts/zola-deployment-with-gitea-actions-and-rsync/index.md).
Zola is my SSG of choice, as it it fast, powerful and packed in a single statically linked binary. Here is how I use with in conjunction with Drone CI for automatic building and deployment to my webserver.
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I have written a [bachelor's thesis](https://git.microlab.space/em/bakalarka) on static site generators and implementing a sample website with Zola in particular. Where my thesis lacks, though, is in the automatic deployment, where I glued together some Git hooks and shell scripts. It works fairly well, but it does not provide much feedback or code validity checks.
## Pipeline
We start with a simple header in which we define the basics.
```yaml
kind: pipeline
name: default
steps:
```
The Drone pipeline has two main parts -- build and deployment. Best way of building the source is by pulling the [official Zola container from ghcr](https://github.com/getzola/zola/pkgs/container/zola). Since the container does not have a shell, we need to use `entrypoint` and `command` options, instead of a set of shell commands.
```yaml
- name: build
image: ghcr.io/getzola/zola:v0.16.1
entrypoint: [ "/bin/zola" ]
command: [ "build" ]
```
Deployment is done using [drone-rsync](https://plugins.drone.io/plugins/rsync) plugin, which handles connection to a remove webserver and can work with private keys via Drone secrets, which we configure later.
```yaml
- name: deploy
image: drillster/drone-rsync
settings:
hosts: [ "0x45.cz" ]
user: drone
source: public/*
target: /srv/www/em.0x45.cz
recursive: true
delete: true
environment:
RSYNC_KEY:
from_secret: rsync_key
```
## Webserver configuration
The server needs a new user with write access to the website root directory.
```sh
useradd drone
mkdir -p /srv/www/em.0x45.cz
chown drone:drone /srv/www/em.0x45.cz
```
## SSH keys
Create a keypair for SSH connection from Drone to our deployment server.
```sh
ssh-keygen -t ed25519
```
Public key has to be added to `~/.ssh/authorized_keys` of *drone* user on our webserver. The private key has to be inserted to Drone as a secret. This can be easily done trough the web UI, or [by using commands](https://docs.drone.io/cli/secret/drone-secret-add/). The secret name has to match `from_secret` option, so in our case: `rsync_key`. Drone can then easily authenticate and push content to our webroot.