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Kollár Csaba

Kollár Csaba

Csaba Kollár

on 1 June 2010

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Transcript of Kollár Csaba

I'm currently working as a Linux/Unix engineer at Educatio Tars. Szolg. Nonprofit Kft. At the moment, I'm spending my notice period, and looking for new challenges. Beside that, I'm an evening class student at Obudai Egyetem (formerly known Budapesti Műszaki Főiskola) as an informatics engineer. I have some classes left and my field of study. Tell us about yourself. Tell us about your work. Here at Educatio, currently we are using dns round-robin load balance and nginx as frontend web server, reverse proxying the requests to a java web container (sun java system web server7) which is starting background calls to apache servers, which are running the intergrated applications written in php. The database server is Mysql. We have a replication configured, but because of the limitations of the Mysql cluster, we are not using it. What type of servers are running this? This all is run by 3 Sun Fire x4600m2 servers with Solaris OS. The machines are clustered with Sun Cluster 3.2. We mainly use failover zones (solaris containers), and scalable services for example apache or nginx. The storage is a HP Eva 4400, which is handling all of our vdisks. DNS round-robin? It's not the best way to balance the load on the servers. Well, yes, but I'm planning to change the architecture of the infrastructure, so we can use better load balancing, because dns round-robin is working fine, when all of the frontend webservers are running, and nginx's load balancing capabilities are limited. So I've implemented on our testing system a sun cluster resource called shared address, which is watching the web server if it's running, and doing load balancing between the running web servers. And the foam on the cake is witch shared address, we can use internal ip addresses for the webservers, making it harder to hack it. And what about Linux? I also have experience working with linux, but here at the company, our policy is to use Solaris. Despite of that, we are using several linux servers for smaller tasks for example building up vpn connections, handling name server, ftp and mailing list services etc.
I've worked with Debian about 5 years before I applied to this job. Smaller tasks like file server, mail server etc for relatively small companies. Anything else you want to share with us? I can use google, so if I get a task, which I've never met before, I know my way around!
So If you are looking for an administrator who is perfect all of the skills and additional skills required, than I'm not the one, but if you are looking for a creative, "good problem solving" gifted, willing to learn administrator... I'm a good option.
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