Ubuntu
11 Dec 2022
Restart your Linux Server — Commands to reboot via SSH
As a sysadmin, one of the things you’ll need to do sooner than later is reboot a server via SSH. Even though it’s easy to do once you figure out how, it’s importance makes it worth learning about. This operation can be essential for maintaining your server’s performance and reliability, assisting you in recovering from
04 Feb 2021
Optimal RAID Stripe Size and filesystem Readahead for RAID-10?
What RAID stripe size is ideal for an array of hard drives? What are the default settings for both raid stripe size and filesystem readahead? Are those defaults acceptable? How do these settings impact the performance of my server? In this post, we’ll go into detail as to what settings are ideal for a server
25 Jan 2021
IOWAIT in Linux — is iowait too high?
High IOWAIT can be a real problem in linux, making your server grind to a halt. The question is, how high is too high? When should I be concerned? Firstly, we’ll talk about what IOWAIT means, discuss related statistics and how to interpret them, and finally how to decide if IOWAIT is causing a problem.
21 Feb 2020
What is Apache Keepalive Timeout? How to optimize this critical setting.
If you’ve struggled to fix web server slowdowns or crashes, you may have come across a setting for Apache called “Keep-Alive”. This is one of the most powerful — and frequently misused — features of apache. In this article, we’ll explain: What is Apache Keepalive / Keepalive Timeout? What configuration is optimal for best server
21 Apr 2015
Setting up Software RAID / MDADM status alert Emails for failed drives in Centos, Ubuntu, and Debian
Issues regarding software and hardware raid are no stranger to the IOFlood blog, with articles discussing the relative merits of each, articles discussing why raid is important (and so are backups), and so on. But RAID only provides protection against failed drives if you realize a drive has failed and replace it. Often times, a
07 Feb 2015
Installing BOINC / World Community Grid on Ubuntu (not Centos)
Installing BOINC Some of you may have read our previous article on world community grid, saying why it is a good idea to donate your spare cpu time. We recommended this for desktop computers mostly, but also servers if they are completely idle. If you want, you can also join team IOFLOOD on world community grid.
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