Recently, when troubleshooting an online problem, I found that the nginx log $upstream_addr field actually returned 2 values, in the form of '192.168.1.1:80, api-servers', where api-servers refers to you The upstream is followed by the group name, and the part has only one value 'api-servers'. Under normal circumstances, this place should be like "192.168.1.1:80", that is, one request falls to one backend service.

I recently bought a new domain name on namesilo and needed a CNAME to the current site. I found that the resolution was extremely slow to take effect. After searching the Internet, I decided to migrate the resolution to cloudflare. There are two advantages: 1. Faster resolution; 2. . Use CDN for free; website access becomes faster

WeChat official does not directly provide a Linux system client. We don't like Wine's Wechat. Kylin Software and Tencent jointly promote the adaptation of native Wechat based on Linux platform. We provide a deb package, which is not wine, and it can be used barely.

Sometimes I want to connect the AirPods2 headset to the Ubuntu computer. After recently reinstalling the system, I encountered a situation where the headset could not be paired. I hereby record the exploration process. I have not tried other AirPods models, and have not tested the equipment (recently purchased AirPods Pro 2nd Generation, after Test, the second generation can also be matched according to this method), the method should be similar.

As we all know, k8s currently has three probes. It is very important to use probes reasonably, which is conducive to timely detection of potential problems