70 lines
1.9 KiB
YAML
70 lines
1.9 KiB
YAML
apiVersion: v1
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kind: ConfigMap
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metadata:
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name: ddns-script
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namespace: monitoring
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data:
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ddns.sh: |
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#!/bin/sh
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# Keeps the carr.pub apex A record pointing at this network's public IP.
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RECORD_ID=84723206
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ZONE="carr.pub"
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ACCOUNT=6300
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API="https://api.dnsimple.com/v2"
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AUTH="Authorization: Bearer ${DNSIMPLE_TOKEN}"
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IP=$(curl -s -m 15 https://ifconfig.me)
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case "$IP" in
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*.*.*.*) : ;;
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*) echo "no valid public ip: '$IP'"; exit 0 ;;
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esac
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CUR=$(curl -s -m 15 -H "$AUTH" "$API/$ACCOUNT/zones/$ZONE/records/$RECORD_ID" \
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| sed -n 's/.*"content":"\([^"]*\)".*/\1/p')
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if [ "$IP" = "$CUR" ]; then
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echo "$(date -Is) up to date ($IP)"
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exit 0
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fi
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RES=$(curl -s -m 15 -X PATCH -H "$AUTH" -H "Content-Type: application/json" \
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"$API/$ACCOUNT/zones/$ZONE/records/$RECORD_ID" \
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-d "{\"content\":\"$IP\"}")
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echo "$(date -Is) updated carr.pub -> $IP"
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case "$RES" in
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*'"id"'*) exit 0 ;;
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*) echo "API error: $RES"; exit 1 ;;
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esac
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---
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apiVersion: batch/v1
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kind: CronJob
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metadata:
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name: ddns-carr-pub
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namespace: monitoring
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spec:
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schedule: "*/5 * * * *"
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concurrencyPolicy: Forbid
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successfulJobsHistoryLimit: 1
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failedJobsHistoryLimit: 3
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jobTemplate:
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spec:
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backoffLimit: 1
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template:
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spec:
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restartPolicy: Never
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containers:
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- name: ddns
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image: curlimages/curl:8.11.1
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command: ["/bin/sh", "/scripts/ddns.sh"]
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env:
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- name: DNSIMPLE_TOKEN
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valueFrom:
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secretKeyRef: {name: dnsimple-token, key: token}
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resources:
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requests: {cpu: 10m, memory: 16Mi}
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limits: {memory: 32Mi}
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volumeMounts:
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- {name: scripts, mountPath: /scripts}
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volumes:
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- name: scripts
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configMap: {name: ddns-script, defaultMode: 0744}
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