Mathieu Broillet
8e9efebeb1
5.8 KiB
| title | date | draft | author | cover | description | tags | ||
|---|---|---|---|---|---|---|---|---|
| Automatics updates with WatchTower and HA notifications | 2023-06-11T13:06:44+02:00 | false | Mathieu Broillet | img/watchtower-docker.png | Tired of checking for updates every few days? Install WatchTower! |
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With watchtower you can update the running version of your containerized app simply by pushing a new image to the Docker Hub or your own image registry. Watchtower will pull down your new image, gracefully shut down your existing container and restart it with the same options that were used when it was deployed initially.
I made a short script to automatically create the docker compose file and start it on any host (should work on debian/alpine). It also sends a notification to a webhook running on HomeAssistant.
{{< code language="BASH" title="Script to auto create a watchtower compose stack" expand="Show" collapse="Hide" isCollapsed="false" >}} apk add docker-compose # if on alpine docker container stop watchtower-watchtower-1 docker container rm watchtower-watchtower-1 mkdir -p /var/data/watchtower/ cat </var/data/watchtower/docker-compose.yml
version: "3" services: watchtower: image: containrrr/watchtower # command: --run-once #notify-upgrade restart: always volumes: - /var/run/docker.sock:/var/run/docker.sock environment: WATCHTOWER_CLEANUP: "true" WATCHTOWER_NOTIFICATION_REPORT: "true" WATCHTOWER_NOTIFICATION_URL: > generic://ha.xyz.abc/api/webhook/watchtower_notification WATCHTOWER_NOTIFICATION_TEMPLATE: | {{- if .Report -}} {{- with .Report -}} {{len .Scanned}} Scan, {{len .Updated}} Mise à jour, {{len .Failed}} Échec {{- range .Updated}} - {{.ImageName}}: Mis à jour {{- end -}} {{- range .Fresh}} - {{.ImageName}}: OK {{- end -}} {{- range .Skipped}} - {{.ImageName}}: {{.State}}: {{.Error}} {{- end -}} {{- range .Failed}} - {{.ImageName}}: {{.State}}: {{.Error}} {{- end -}} {{- end -}} {{- else -}} {{range .Entries -}}{{.Message}}{{"\n"}}{{- end -}} {{- end -}} EOF cd /var/data/watchtower/ docker compose up -d {{< /code >}}
I am then using Node-RED to parse the notification and send it to my phone in a more "readable" format. For this code to work, you need to have NodeRED and the HomeAssistant addon (node-red-contrib-home-assistant-websocket) installed.
{{< code language="JSON" title="NodeRED flow for parsing watchtower webhook" expand="Show" collapse="Hide" isCollapsed="true" >}} [ { "id": "cbcf3a96685a4553", "type": "ha-webhook", "z": "ee9d63dee39b7924", "name": "Watchtower Notification", "server": "f00dc31d.a2b0e", "version": 1, "outputs": 1, "webhookId": "watchtower_notification", "outputProperties": [ { "property": "payload", "propertyType": "msg", "value": "", "valueType": "data" } ], "payloadLocation": false, "payloadLocationType": false, "headersLocation": false, "headersLocationType": false, "x": 150, "y": 2280, "wires": [ [ "56ae4b8a75d63963" ] ] }, { "id": "56ae4b8a75d63963", "type": "switch", "z": "ee9d63dee39b7924", "name": "Check if any update/skip/fail", "property": "payload", "propertyType": "msg", "rules": [ { "t": "cont", "v": "Mis à jour", "vt": "str" }, { "t": "cont", "v": "Fail", "vt": "str" }, { "t": "cont", "v": "Skip", "vt": "str" } ], "checkall": "false", "repair": false, "outputs": 3, "x": 430, "y": 2280, "wires": [ [ "f90014bfd991bb75" ], [ "f90014bfd991bb75" ], [ "f90014bfd991bb75" ] ] }, { "id": "f90014bfd991bb75", "type": "api-call-service", "z": "ee9d63dee39b7924", "name": "Send notification to mathieu", "server": "f00dc31d.a2b0e", "version": 5, "debugenabled": false, "domain": "notify", "service": "mobile_app_oneplus_8t", "areaId": [], "deviceId": [], "entityId": [], "data": "{\t "title": "WatchTower",\t "message": payload,\t "data": {\t "ttl": 0,\t "priority": "high"\t }\t}\t", "dataType": "jsonata", "mergeContext": "", "mustacheAltTags": false, "outputProperties": [], "queue": "none", "x": 730, "y": 2280, "wires": [ [] ] }, { "id": "bfcb353047dce568", "type": "comment", "z": "ee9d63dee39b7924", "name": "Watchtower notification", "info": "", "x": 150, "y": 2240, "wires": [] }, { "id": "f00dc31d.a2b0e", "type": "server", "name": "Home Assistant", "addon": false, "rejectUnauthorizedCerts": true, "ha_boolean": "", "connectionDelay": false, "cacheJson": false, "heartbeat": false, "heartbeatInterval": "", "statusSeparator": "", "enableGlobalContextStore": false } ] {{< /code >}} Import this via the NodeRED UI (Ctrl+I)