Hi everyone, I host a server with few services running for my family and friends. The server freezes sometimes. Where the services stop responding. If I try to ssh into the server, it takes a lot of time (3 to 5 mins) for it to connect. After being connected, every letter I type takes 2 to 3 mins to appear on screen.
Seems like the server is overloaded with tasks. But I am not sure what load it is running. I have netdata installed. I could pull up following screenshots for insights.
Can someone please help me in troubleshooting the issue?
I have tried testing stress testing my RAM and CPU, and they were fine. But I would start troubleshooting from scratch if you have recommendations for testings softwares.
Please also let me know if there is anything I can pull from netdata to help in trouble shooting.
System Specification:
System RAM
Disk I/O
Total CPU Utilization
Idle Jitter
It looks like system is thrashing. Because of the high disk usage and very low amount of physical memory available previous the incident. Look what
dmesgsays. Maybe you'll see some OOM errors.The solution, I believe, should be to limit the amount of resources your services can use. In their config or something, or put them inside containers with limited amount of memory, or migrate one of the services to other machine.
I was using docker containers. I set appropriate ram usage limits in docker-compose files now. Lets see how it turns out.