Background : I need to receive an alert when my server is down. When the server is down, maybe the Sysload collector will not be able to send any alert. To receive an alert when the server is down, I have an external source (server) to detect it.
Searching for what one can monitor with perf_events on Linux, I cannot find what Kernel PMU event are?
Namely, with perf version 3.13.11-ckt39 the perf list shows events like:
Is there some way I can check which of my processes the kernel has killed? Sometimes I log onto my server and find that something that should’ve run all night just stopped 8 hours in and I’m unsure if it’s the applications doing or the kernels.
We have one central server which functions as an internet gateway. This server is connected to the internet, and using iptables we forward traffic and share the internet connection among all computers in the network. This works just fine.
I find the output of the shell command top to be a simple and familiar way to get a rough idea of the health of a machine. I’d like to serve top‘s output (or something very similar to it) from a tiny web server on a machine for crude monitoring purposes.
I want to get the current Bandwidth of an interface say “eth0” from the terminal. It better be as simple as possible. Say
up 10 dn 30.
Instead of giving out a lot of text like “vnstat” does.
There’s an application on my system which keeps creating an empty ~/Desktop directory again and again. I can’t stand capital letters in my home, nor I can stand this “desktop” thingy. So, as picky as I am, I remove the directory each time I see it. I’d really like to know which application is responsible for that (probably some application I won’t use so often¹).