Laixintao | SG

Original link: https://www.kawabangga.com/posts/5324 Today there is a need like this: We provide HTTP services to another team. During joint debugging, the client can only initiate requests from the server; We want to deploy the service on a local laptop for debugging, but there are NAT and firewalls between the server and the laptop, and the […]

Original link: https://www.kawabangga.com/posts/5289 In the operation and maintenance system, I think that the Alert light is not enough. Every Alert sent needs to be processed and resolved. The monitoring system we are designing now is as follows: Vmalert is a component of alert rule evaluation. Simply put, it continuously queries the data in the TSDB

Original link: https://www.kawabangga.com/posts/5236 A problem encountered today, record it. The reason is that my colleagues told me that the node-exporter on two machines was down. Received the work order, come live I went to check it, and it did hang up. This process is running on systemd, so I went to journalctl to check the

Original link: https://www.kawabangga.com/posts/5217 I maintain a service mesh platform in the company, mainly to act as a proxy for user requests. When the user’s service wants to call another service, the request is sent to our process, and then we forward it to the corresponding service. I received a user work order today, which means

Original link: https://www.kawabangga.com/posts/5175 Some time ago, I encountered a problem. The program crashed inexplicably, and the stack didn’t see any clues. Today I changed a parameter to make the golang program core dump when it crashes. In fact, the core is to add an environment variable, GOTRACEBACK=1. But there are some other system-related problems, which

Original link: https://www.kawabangga.com/posts/5166 Last time I introduced the basic usage of the oil monkey script . This article simply records a script that uses oil monkey to improve Quality of Life today. First describe the problem I want to solve: Many of our online operations are usually performed through Jenkins, and tasks need to be

Original link: https://www.kawabangga.com/posts/5160 After I wrote “Everything about MTU and MSS” last time, I had another question recently. After thinking hard for a week, I finally got the answer. Now that I think about it, the answer to the question is simple and effective, but we discussed it with a few colleagues during lunch, and

Original link: https://www.kawabangga.com/posts/5154 Now the company more or less uses some open source software, and I also deploy and maintain a lot of open source software in my work. This article will talk about some experience in maintaining these software. What I mainly want to talk about are those services that need to be deployed,

Original link: https://www.kawabangga.com/posts/5095 As mentioned in the last book, the trip has refreshed the southernmost point I have ever been to. I went to Indonesia again last week, and this time I went to refresh the highest point I have been to. We went to Lombok and climbed the Rinjani volcano. Rather than a trip,

Original link: https://www.kawabangga.com/posts/5025 The track of travel has been going south, constantly breaking through the “southernmost point I have ever been to”, from Shanghai, to Hangzhou, Xiamen, Guangzhou, Singapore, and recently went to Bali Island, and passed the equator for the first time. We set off from Singapore, first went to Jakarta for a transit,

Original link: https://www.kawabangga.com/posts/4840 I completed the wedding with my wife on National Day. It took at least a year from planning to completion for this major event in my life, and it involved the energy of hundreds of people. It is worth recording my feelings. A wedding is a very energy-intensive affair, involving the preparation

Original link: https://www.kawabangga.com/posts/4828 I find that moving things on the screen attract attention, and now I receive a lot of messages every day, and there will be hundreds of them if I don’t read them for an hour. This kind of work is terrible. At first I forced myself not to pay attention to the

Original link: https://www.kawabangga.com/posts/4822 Use PromQL to query the error budget used in the past month, and then display the current SLI. Results as shown below: The difficulty of this query is that the content queried by PromQL is the value of the time series , such as the query memory > 0.6 , the time