git
46 lines
1.3 KiB
Bash
Executable File
46 lines
1.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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#: "${GOTIFY_URL:?Set GOTIFY_URL (e.g. https://gotify.lan.ddnsgeek.com)}"
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#: "${GOTIFY_TOKEN:?Set GOTIFY_TOKEN (AAM..CtNmUGoNIV)}"
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GOTIFY_URL="https://gotify.lan.ddnsgeek.com"
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GOTIFY_TOKEN="ADuOnDBG7C27hcf"
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STATE_DIR="./docker-health-alert"
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STATE_FILE="${STATE_DIR}/last_unhealthy.txt"
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mkdir -p "$STATE_DIR"
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# Collect unhealthy running containers (ignore those with no healthcheck)
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unhealthy="$(
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docker ps -q | while read -r id; do
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status="$(docker inspect --format '{{if .State.Health}}{{.State.Health.Status}}{{else}}no-healthcheck{{end}}' "$id")"
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name="$(docker inspect --format '{{.Name}}' "$id" | sed 's|^/||')"
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if [[ "$status" == "unhealthy" ]]; then
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echo "$name"
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fi
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done | sort
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)"
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# Only alert on change
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last="$(cat "$STATE_FILE" 2>/dev/null || true)"
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if [[ "$unhealthy" != "$last" ]]; then
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if [[ -n "$unhealthy" ]]; then
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msg="Unhealthy containers: $(echo "$unhealthy" | paste -sd ', ' -)"
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title="Docker: UNHEALTHY"
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priority=8
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else
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msg="All containers healthy again."
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title="Docker: RECOVERED"
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priority=4
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fi
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curl -fsS -X POST "${GOTIFY_URL%/}/message" \
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-H "X-Gotify-Key: ${GOTIFY_TOKEN}" \
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-F "title=${title}" \
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-F "message=${msg}" \
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-F "priority=${priority}" >/dev/null
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printf "%s" "$unhealthy" > "$STATE_FILE"
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fi
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