other times it’s not… As mentioned in the article here, this post is about a weird issue we experienced. The issue was that we would randomly have (what appeared to be) a DNS resolution issue. We would have resolution issues for between 10 and 15 minutes, and it would resolve without intervention. Some of the… Continue reading Sometimes it’s DNS
CoreDNS – a weird default policy
Have you ever wondered how CoreDNS chooses an upstream nameserver to do DNS lookups against? I never did, until recently that is. I (and many others) just assumed this would work like most OSes work. This is not the case though. Let’s take a look at this a bit more. The setup. In the above… Continue reading CoreDNS – a weird default policy