blog-wiki/1693890000-blog-issue.wiki

38 lines
1.3 KiB
Plaintext
Raw Normal View History

%title Blog Issue
---------------------------
2023-11-25 20:22:35 +00:00
[[index.wiki|Index]]
---------------------------
2023-11-25 20:22:35 +00:00
last 5 posts
---------------------------
- [[1693630800-hello-world.wiki|Hello World]]
---------------------------
*Date:* 2023/09/05
*Author:* Tristan Ancelet
= Blog Issue =
== DNS ==
2023-11-25 20:22:35 +00:00
---------
Looks like my master DNS server was down for the last 3 days (didn't know until the teacher mentioned it). Had to end up taking a look at my provider and it looks like my master DNS server had crashed at some point. After restarting it I got everything started up and it seems to have come back up.
I had a backup DNS server as well, but after looking into the VM (that was still running), it turns out that I never whitelisted the DNS port (53/udp) on it. So it's entire life has been failure (as it's been the backup for several months). My thought is that I *DID* whitelist it but not perminately. So after a reboot it cleared the config and DNS traffic wasn't whitelisted it anymore.
Here is the commands it did to whitelist DNS (running firewalld as a device side firewall)
{{{bash
firewall-cmd --perm --zone=public --add-service=dns
firewall-cmd --reload
}}}
After checking that DNS was resolving with dig, I was able to visit my site with no more issues.
{{{bash
dig blog.tristanancelet.com
}}}