82 lines
3.8 KiB
Markdown
82 lines
3.8 KiB
Markdown
---
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title: "Setup a Docker Swarm cluster - Part III"
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date: 2022-02-20
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description: "Build an opinionated containerized platform for developer..."
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tags: ["docker", "swarm"]
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slug: build-your-own-docker-swarm-cluster-part-3
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draft: true
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---
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{{< lead >}}
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Build your own cheap while powerful self-hosted complete CI/CD solution by following this opinionated guide 🎉
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{{< /lead >}}
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This is the **Part III** of more global topic tutorial. [Back to first part]({{< ref "/posts/2022-02-13-build-your-own-docker-swarm-cluster" >}}) to start from beginning.
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## Keep the containers image up-to-date
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It's finally time to test our new cluster environment by testing some images through the Portainer GUI. We'll start by installing [`Diun`](https://crazymax.dev/diun/), a nice tool for keeping our images up-to-date.
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Create a new `diun` stack through Portainer and set following content :
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```yml
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version: "3.2"
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services:
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diun:
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image: crazymax/diun:latest
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command: serve
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volumes:
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- /mnt/storage-pool/diun:/data
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- /var/run/docker.sock:/var/run/docker.sock
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environment:
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TZ: Europe/Paris
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DIUN_WATCH_SCHEDULE: 0 */6 * * *
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DIUN_PROVIDERS_SWARM: 'true'
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DIUN_PROVIDERS_SWARM_WATCHBYDEFAULT: 'true'
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DIUN_NOTIF_MAIL_HOST:
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DIUN_NOTIF_MAIL_PORT:
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DIUN_NOTIF_MAIL_USERNAME:
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DIUN_NOTIF_MAIL_PASSWORD:
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DIUN_NOTIF_MAIL_FROM:
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DIUN_NOTIF_MAIL_TO:
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deploy:
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placement:
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constraints:
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- node.role == manager
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```
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{{< tabs >}}
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{{< tab tabName="volumes" >}}
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| name | description |
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| ------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| `/mnt/storage-pool/diun` | It will be used for storage of Diun db location, Diun need it for storing detection of new images version and avoid notification spams. **Don't forget** to create a new dedicated folder in the GlusterFS volume with `sudo mkdir /mnt/storage-pool/diun`. |
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| `/var/run/docker.sock` | For proper current docker images used detection through Docker API |
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{{< /tab >}}
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{{< tab tabName="environment" >}}
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| name | description |
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| ------------------------------------- | ------------------------------------------------------------------------------------- |
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| `TZ` | Required for proper timezone schedule |
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| `DIUN_WATCH_SCHEDULE` | The standard linux cron schedule |
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| `DIUN_PROVIDERS_SWARM` | Required for detecting all containers on all nodes |
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| `DIUN_PROVIDERS_SWARM_WATCHBYDEFAULT` | If `true`, no need of explicit docker label everywhere |
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| `DIUN_NOTIF_MAIL_*` | Set all according to your own mail provider, or use any other supported notification. |
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{{< alert >}}
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Use below section of Portainer for setting all personal environment variable. In all cases, all used environment variables must be declared inside YML.
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{{< /alert >}}
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{{< /tab >}}
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{{< /tabs >}}
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## Installation of databases
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### MySQL
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### PostgreSQL
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