Check if all your servers are up

I got a task to do. Every morning check if a cluster of servers is up and restart those, which aren’t. To check if a server is up we’d use:

which pings the server once.

Ok, that’s over. But like I said I got a list of servers, which changed every morning so it requires to write a simple script. I decided to use linux Bash scripting. Assuming the input data is a list of IPs in csv format, we may create a new file, let’s name it checkifup.sh

and copy and paste this contents

where

part is only to clean input line, because sometimes it happens to get some white spaces.

Hit ESCAPE and double SHIFT+Z to save file. Next create a list of servers you want to check. I won’t show you mine, but it would look like this:

Save to a file called eg. list.csv. And now run our test:

You will get a nice list of servers. Use it well nerds.