This is a text-only version of the following page on https://raymii.org:

This is a text-only version of the following page on https://raymii.org:
---
Title : Check HTTP status code for a page on all DNS records
Author : Remy van Elst
Date : 09-04-2017
URL : https://raymii.org/s/snippets/Check_HTTP_status_code_for_a_page_on_all_DNS_records.html
Format : Markdown/HTML
---

This is a small snippet using curl to check the status code of a given URL on
all DNS records for a given domain. This site has a few A records in round robin
mode, and sometimes the automatic deployment fails. Using this query I can check
which server is the culprit and fix it manually.

 Recently I removed all Google Ads from this site due to their invasive tracking, as well as Google Analytics. Please, if you found this content useful, consider a small donation using any of the options below: <a href="https://leafnode.nl">I'm developing an open source monitoring app called Leaf Node Monitoring, for windows, linux & android. Go check it out!</a> <a href="https://github.com/sponsors/RaymiiOrg/">Consider sponsoring me on Github. It means the world to me if you show your appreciation and you'll help pay the server costs.</a> <a href="https://www.digitalocean.com/?refcode=7435ae6b8212">You can also sponsor me by getting a Digital Ocean VPS. With this referral link you'll get $100 credit for 60 days. </a> 

The normal HEAD request output also shows all the headers the server sends and
that is a pain to scroll through. This just shows me the HTTP status code, which
is all I want.

dig +short A raymii.org | awk '{print "echo "$1"; curl -s -k -o /dev/null -I -w \"%{http_code}\" https://"$1"/s/blog/Burn_in_testing_for_Hypervisor_and_Storage_servers.html; echo; echo"}' | bash

Example output:

163.172.129.56
200

185.54.115.97
404

213.187.244.250
000

81.4.120.226
200

The first and last server are correct. The middle one with status code `000` is
offline and the `404` code is also not up to date.

For IPv6 and AAAA records, we add brackets:

dig +short AAAA raymii.org | awk '{print "echo "$1"; curl -6 -s -k -o /dev/null -I -w \"%{http_code}\" https://["$1"]/s/blog/Burn_in_testing_for_Hypervisor_and_Storage_servers.html; echo; echo"}' | bash

Example output:

2a00:d880:5:783::2
200

2a04:92c7:e:4d1::5436
200

[1]: https://www.digitalocean.com/?refcode=7435ae6b8212

---

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