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Tag Archives: linux
Recovering SW RAID with Ubuntu on Amazon AWS
Amazon’s AWS cloud service is a very popular and generally mature offering, but it does have it’s issues at times – in particular it’s storage options and limited debug facilities. When using AWS, you have three main storage options for … Continue reading
Tagged amazon, aws, cloud, geek, linux, open source, RAID, storage
2 Comments
Route53 with NamedManager 1.8.0
Just released NamedManager 1.8.0, my open source web-based DNS management tool. This release fixes some bugs with MySQL 5.6 and internationalized domain names, but also includes support for using Amazon AWS Route53 alongside the existing Bind9 support. Just add a … Continue reading
Tagged amazon, aws, bind, code, dns, geek, linux, namedmanager, open source, route53
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Adventures in I/O Hell
Earlier this year I had a disk fail in my NZ-based file & VM server. This isn’t something unexpected, the server has 12x hard disks, which are over 2 years old, some failures are to be expected over time. I … Continue reading
Tagged cloud, fail, geek, linux, LVM, marvell, new zealand, open source, pain, RAID, SATA, software, storage
6 Comments
Restoring LVM volumes
LVM is a fantastic technology that allows block devices on Linux to be sliced into volumes(partitions) and allows for easy resizing and changing of the volumes whilst running, in a much easier fashion than traditional MSDOS or GPT partition tables. … Continue reading
Tagged geek, linux, LVM, open source, storage
8 Comments
Resize ext4 on RHEL/CentOS/EL
I use an ext4 filesystem for a couple large volumes on my virtual machines. I know that btrfs and ZFS are the new cool kids in town for filesystems, but when I’m already running RAID and LVM on the VM … Continue reading
“OpsDev”
I recently did a talk at one of the regular Fairfax “Brown Bag” lunches about tools used by the operations team and how developers can use these tools to debug some of their systems and issues. It won’t be anything … Continue reading
Tagged fairfax, geek, linux, open source, presentation, talk, web, work
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Exposing name servers with Puppet Facts
Carrying on from the last post, I needed a good reliable way to point my Nginx configuration at a DNS server to use for resolving backends. The issue is that I wanted my Puppet module to be portable across various … Continue reading
Tagged code, dns, fact, geek, linux, nginx, open source, puppet, ruby
6 Comments
Varnish DoS vulnerability
The Varnish developers have recently announced a DoS vulnerability in Varnish (CVE-2013-4484) , if you’re using Varnish in your environment make sure you adjust your configurations to fix the vulnerability if you haven’t already. In a test of our environment, … Continue reading
Tagged DoS, geek, http, linux, open source, security, varnish
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SPF with SpamAssassin
I’ve been using SpamAssassin for years, it’s a fantastic open source anti-spam tool and plugs easily into *nix operating system mail transport agents such as Sendmail and Postfix. To stop sender address forgery, where spammers email using my domain to … Continue reading
Tagged geek, linux, mail, open source, perl, RFC 4408, spam, spamassassin, spf
4 Comments
Ubuntu, the Windows of the Linux world
Sometimes I do wonder about if Ubuntu is actually the Windows of the Linux world, some of their design decisions, like non-closable restart windows… Thankfully xkill closes *all* windows and leaves no survivors. It’s a shame that the general desktop … Continue reading
Tagged fail, geek, linux, open source, ubuntu, UX
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