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March 1, 2023 06:51
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A bash script to update an A record for a domain in Cloudflare to be the value of the current IP
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| #!/bin/bash | |
| zone_id= | |
| # needs DNS read and write access | |
| api_key= | |
| # must also be in the given zone | |
| record_name=example.com | |
| ip=$(curl -s -X GET https://checkip.amazonaws.com) | |
| record_id=$(curl -X GET "https://api.cloudflare.com/client/v4/zones/$zone_id/dns_records?type=A&name=$record_name" \ | |
| -H "Authorization: Bearer $api_key" \ | |
| -H "Content-Type:application/json" | jq -r '{"result"}[] | .[0] | .id') | |
| curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/$zone_id/dns_records/$record_id" \ | |
| -H "Authorization: Bearer $api_key" \ | |
| -H "Content-Type:application/json" \ | |
| --data "{\"type\":\"A\",\"name\":\"$record_name\",\"content\":\"$ip\",\"ttl\":1,\"proxied\":false}" |
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