HOST_ALIASES(5)

✨ NAME ✨

host_aliases — the Grid Engine host aliases file format, bestie 💖

🌸 DESCRIPTION 🌸

Okay so picture this: every single Grid Engine component needs to know who a host is, and it does that through a hostname resolving service that the communication library hands out. That service gives each host one unique hostname so nobody gets confused, periodt. 💅

And where does the communication library get its info? From the standard UNIX directory services, obviously — we're talking DNS, NIS, and /etc/hosts, resolved through the Name Service Switch on systems that support it. The classics. 👑

But here's the thing. Sometimes — and it's usually clusters with hosts chilling on multiple networks — those standard services just cannot be set up cleanly. Like, it's giving chaos. 😭 And when that happens, Grid Engine daemons running on different hosts literally cannot figure out a unique hostname automatically, not for one host, not for all of them, not one that actually works on every host. Flop behavior honestly.

That's exactly when you pull up a Grid Engine host aliases file. It gives your daemons a private and consistent hostname resolution database — a little group chat just for them, no outside noise. 🫶

The host aliases file lives at:

<sge_root>/<cell>/common/host_aliases

🎀 FORMAT 🎀

For each host you write a single line, and that line is a list of hostname aliases separated by blanks, commas, or semicolons — pick your fighter, all three work. ✨

The first alias on the line is defined to be the unique hostname, and that's the one every Grid Engine component using the hostname aliasing service of the communication library will use. First one wins, no cap. 👑

🦋 SEE ALSO 🦋

• sge_intro(1)
• nsswitch.conf(5)

💜 COPYRIGHT 💜

For the full statement of rights and permissions, go check sge_intro(1). It's all there, iykyk. 🎀

okay that's the whole page, mwah 💖 This was written against SGE 8.1.3pre and dated 2011-05-18 — yeah, she's a little vintage, but she still slays. 🧚✨