If we find that our VPS server is abnormal, generally we can analyze it from the server logs to see if there is an IP source that does not follow the "rules". For example, we can use server log analysis tools: ngxtop and GoAccess to analyze the IP source, number of connections, error requests, browsers, traffic bandwidth, etc. in the statistical logs.
In order to monitor the network line conditions of different local computer rooms of major VPS hosting providers, we can use the free open source network performance monitoring tool to visualize the master/slave deployment of Smokeping. Smokeping's powerful and intuitive drawing can help us understand the network conditions of the IDC computer room within a certain period of time.
I don’t know if I used a VPS host with a high configuration before, or if there is a problem with the performance of the newly moved Alibaba Cloud Hong Kong VPS host. In short, every time I dig the site at night, the host becomes unstable and the system load suddenly becomes high. suddenly low. Using server log analysis tools: ngxtop and GoAccess, you can also find out that some IPs are constantly scanning server ports and WP background.
Many times, friends who engage in server maintenance hope to have a server performance monitoring platform that can provide an overall overview, so that they can grasp the running dynamics of the company's servers in real time. There are currently many third-party network performance monitoring platforms on the market, such as Alibaba Cloud, Tencent Cloud, Linode, Vultr and other VPS hosting providers with their own server performance monitoring services.
Regarding the problem of the Linux disk being full, I have encountered it before when using the WDCP panel because the website log was enabled in the background of the panel, but the log was not deleted regularly. In the long run, the disk space of the VPS host was filled up with logs. When the disk space reaches 100%, some inexplicable errors will occur on the website, such as being unable to log in to the background, unable to comment, and the page is blank, etc.
