Archive for the ‘Systems Administration’ Category

ADTEN

A short entry to let you know that I have recently been instrumental in coining a new phrase in the Project Management Lexicon Of Silly Phrases… ADTEN. ADTEN = Arbitrary Difficulty/Time Estimate Number. 1 = < 1 day, simple task 2 = 1 – 5 days 3 = 5 – 10 days 4 = 10 […]

RHCE

Last week I took the RH300 course- the fast track RHSA+RHCE for seasoned admins. While I can’t talk about the details of the test, I will say that the class was awesome. I learned an awful lot about some very cool stuff, including selinux, LVM, filesystem ACLs, automount, and lots of other stuff I don’t […]

DNS Hijacking by ISPs (or: How I Learned to Stop Being RFC Compliant and Love the Paycheck)

Disclaimer: I work for a cable provider, but not one of the ones listed. I speak for myself alone here on this blog, from my own view of professional sysadmin ethics, now and always. Sherman, set the wayback machine! The time? September 15th, 2003.  In 2003, Verisign(since monikered as Verislime I might add) decided they […]

Solaris tar command… I hate you.

Apparently, the tar command on Solaris does not strip leading slashes. Meaning you can clobber original files if you carelessly untar them, which could be disastrous in some circumstances.  Like, say, if you clobbered /etc/ or /var/ or something. Add this to the lack of a z or j option(gunzip and bunzip built in) and […]

Customer perception for systems admins

When I was first learning system administration, a senior admin told me “Good administrators are invisible”. I did not really understand that at first, but now it’s one of my prime tenets. For the most part, we become visible when things break.  If you have to be visible, manage your visibility.