Archive for June, 2007

Gearing up for summer hell…

June 29th, 2007

I had to curb my Linux fun for a bit, or so I thought, to work on some summer tasks. The first thing I needed to do was get a framework for our imaging in place. Historically, we have used Ghost from back when Binary Labs owned a produced it. We never really got into multi casting for no particularly good reason. We continued to lean on the old Dos ODI based boot disks which ran on IPX. Some might remember the old lsl, 3c90x, ipxodi, vlm commands like they were yesterday. I do too, mostly because they were yesterday for us, literally.

We have had ZenWorks in place for a while. I even installed the Zen 7 imaging bits last summer but never got around to playing with it until recently. In the past week, I have finally been able to create boot CDs and USB thumb drives which boot to a menu driven shell script for all of our normal everyday tasks. I even tested multi casting and it seems to be working well. I think we’ve officially caught up to the year 2000 with our imaging.

I have all the server equipment ordered I need for the summer. It shaping up that our iSCSI cluster is a go. If anyone has any pro tips with Novell Cluster Services, feel free to drop me a line.  You know, anything that I might want to avoid because a year down the road I might be convinced to try and build a time machine out of a Delorean so I can produce the necessary 1.21 gigawatts I need for time travel to come back and slap myself in the back of the head for the dumb decision I’m about to make…in the past…or something.

On an unrelated note, I was accused of being a Novell employee or a plant on a news site/message board this week. I’ve been called plenty of things in my life, that’s the first time I’ve been tagged as a corporate shill. Should I be honored? ;)

SLES10 SP1

June 21st, 2007

I’ve spent the past couple of days mucking about with SLES10 SP1. I upgraded two test machines. The first I tried to upgrade through YaST online update. That ended up locking out all my accounts including root, rendering the machine useless above single user mode. I ended up booting off of the media CDs I created while scratching my head and did a system update. That fixed that install. I updated from the media on my other test server.

I began playing around with Xen on the second box. It’s an older Dell PowerEdge server with dual PIII based Xeon processors. It has always been a capable test machine for most odd-ball operating systems I’ve thrown at it. I’ve reached a limitation specifically related to Xen. Apparently, for full virtualization, I need an Intel VT-x compatible processor. I’m going to try to scare up one of our dual core computers and see if it has the proper processor type.

I’m getting itchy as far as my server work this summer goes. I want new equipment yesterday. The sooner we get it the better. I’m not sure where the cluster project stands however.

How to enable SNMP on SLES 10

June 11th, 2007

It seems that without fail, whenever I try to install or configure something on Linux, it generally turns into a failure the first time around. I tend to open up the documentation, get distracted because I just want to get it installed so I can mess around with it, and just try to get it going by shooting from the hip. I always end up going back to the docs or finding something on the net(do we still say that? I didn’t get the memo) that explains whatever issue I’m having in plain english. Call it a bad habit, but it’s how I learn.

At any rate, after beating my head on my desk trying to get snmpd running and configured properly on a SLES 10 box for cacti, I stumbled on this TID:

https://secure-support.novell.com/KanisaPlatform/Publishing/916/3000812_f.SAL_Public.html

Cacti

June 5th, 2007

My Zenoss project died a horrible dependency hell death. I was never able to get it installed either through the source rpms or even compiling from source. Following the SLES 10 instructions never worked for me, nor the few suggestions I found out on the internets. I finally called it quits and went with Cacti.

Compared to Zenoss, Cacti installed without a hitch. I understand they are apples and oranges but Cacti, despite my initial thoughts, seems to do what I need. I just got a dozen Cisco Catalyst 2950 switches configured to SNMP informs and I’m graphing the G 0/1, G 0/2, and VLAN1 interfaces. I figured there’s no real point in tracking every individual ports since I’m looking for bottlenecks at the switch level. If I find a bottleneck at a switch, I can turn on graphing per fastethernet port at that point to find the suspect.

I’ve been mucking around with trying to get our NetWare servers up and going. I’m having an issue with Volume Space and CPU graphing to work. If anyone has any experience with this, please drop me a line in the comments sections.

One final thing about Zenoss. I seem to remember Novell being a partner with Zenoss the company. It’s funny that there aren’t proper Zenoss RPMs for SLES, it isn’t compatible with the default install version of Mysql on SLES(5.0.18), and there aren’t any proper install instructions which work. Seems to me this might qualify as ironic.