Ok so it all started like this: Bunch of web servers, all the same model (Dell R710), all functioning properly – however two of them are faster then the others (40% lower response time AND lower load average). Average connections to all the machines was identical. Hardware: Identical Software: Identical (to eliminate this as an [...]
When managing a large number of servers, it is most likely that you will come across a server that makes use of a RAID controller, and as such you will need to know the status of the disks and the disk array. As these are usually proprietary controllers, normal tools like ipmiutil, lshw, lspci, etc. [...]