Author Archives: mrladmin

LPI here we come…

02/03/2012 News 0

The deed is done – LPI 101 and 102 exams are booked! Stay tuned for an update when the results are in (as long as it’s passes all round :-)

Astaro Cluster Install

29/02/2012 Projects 0




Yesterday I completed the installation of a pair of Astaro ASG320s Sophos UTM320s in active-passive configuration for a customer.  The 320s are great machines, and v8 of the software is very slick.

This pair replaced an iptables firewall server and another Linux routing box.  In doing so, we reduced the ruleset from about 250 iptables rules (in 8 chains) to a nice simple 45 rules, all configured with drag ‘n drop!

We also configured an SSL VPN solution and attached a (white) RED device for a branch office that will replace a VPN server!


Another TTP EMEA 2012 session!!

29/02/2012 News 0




The workload for the TTP just keeps on growing, but I’m not complaining!

I’m now presenting with Hubert from SEP on Sesam backups.  He gets to talk, and I get to do a demo of the SEP Sesam Appliance and backing up and OES11 server…

TTP EMEA 2012 is almost upon us…

26/02/2012 News 0




So, it’s getting to that time of year again – TTP EMEA (  Really looking forward to seeing old (and young) friends again as well as meeting loads of interesting new people!

As this year’s conference is the first official outing for mrlinux there’s a lot of prep work to be done, not least getting business cards printed and this website up and running!!

I’m will be presenting four session this year:

  • Configuring OES11 server volumes and file systems using the NLVM command sets
  • Patch Staging with SMT
  • Implementing POSIX clustering resources with NCS and NCP enabling them
  • SUSE Linux Availability (including SLE HA and SLE HA GEO)

That means a whole lot of live demos and a large number of VMs to get right!  The current count is 6 VMs totalling over 40G of disk space – really must back them up somewhere before something goes bang…

SLES 11 XEN HA cluster

24/02/2012 Projects 0

High availability comes in many forms but a combination of clustering and virtualisation is always going to be interesting!

This customer has been using XEN in SLES for a while now and was looking for more redundancy.  So when hardware renewal time came rolling around, we worked out that they could get three IBM x3550s for less than they had paid for their original x346!!  Cluster time….

As they had been a SLES customer for a while and kept their maintenance going, they were automatically licensed for the HA Extension (it’s not exactly expensive anyway).  We added a couple of decent sized QNAP NAS boxes with lots of disk in RAID 10 and set up iSCSI on dedicated switches.  Next step, format the LUs with OCFS2, create the cluster resources for OCFS2 and we’re ready to go!  The domUs were copied over from the old XEN hosts and tested locally.  No problems there, so each XEN domU then became a cluster resource!  The XEN daemons on the nodes and the resources were then configured for live migrate and the virtual machines can now migrate around the cluster without being shut down, yes, even the Windows ones as they have the Virtual Machine Driver Pack installed…

Happy Days!


Clef two-factor authentication