ReleaseEngineering/Slave Naming

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At Release Engineering we do builds and tests of Firefox, Firefox for Android, Firefox OS and Thunderbird. We also do some other tier-2 type of jobs on the same hardware used to ship the mentioned products. For builds, we build both on real hardware and VMs (in-house & AWS). For unit and performance tests (aka talos), we build both on real desktop machines, VMs (EC2) and mobile development boards (tegras & pandas). As we move everything to scl3, we can see the purpose of the machine indicated on the full hostname (try build machines VS release build machines VS test machines VS "Windows" vlan).


  • We only use "try" or "y" for ec2 instances since renaming is harder with in-house hosts
  • We are unable to use hostnames longer than 15 characters on Windows, so any try hosts in EC2 are y-2008, not try-2008.
  • Moving machines from the try vlan to the build vlan will requires hostname changes (after the first 'dot').

Proposed naming

Server hostname convention


1) P = purpose

  • "b-" - for build machines
  • "t-" - for test machines
  • "y-" - for try machines in AWS

2) O = OS + instruction size (optional)

  • xp32/w732/w864/w1064/2008/2012
    • we currently use "w64" for "w2008"
  • linux32/linux64
    • for linux we camouflage the distro
  • snow/lion/mtnlion/mavericks/yosemite

3) T = Type of hardware
For VMs:

  • "ec2" for Amazon on-demand instances
  • "spot" for Amazon spot instances
  • "vmw" for in-house vmware

For real hardware:

  • "ix" for ix machines
  • "r#" - # depends on the revision of Mac mini that we use

4) XXXX = number (or XXX = number in AWS)
Fixed digits allow lexical sorting, but limit to 9999 slaves per type. This is at variance with numbering throughout the rest of Mozilla, where zero-padding is not used.


Build machine examples:

  • b-2008-spot-XXX (15 chars)
  • b-2008-ix-XXXX (14 chars)
  • b-lion-r#-XXXX

Try machine examples:

  • y-2008-spot-XXX (15 chars)
  • y-linux64-spot-XXXX
  • y-linux32-spot-XXXX

Test machine examples:

  • t-linux32-spot-XXXX
  • t-linux64-spot-XXXX
  • t-linux32-ix-XXXX
  • t-linux64-ix-XXXX
  • t-snow-r4-XXXX
  • t-yosemite-r5-XXXX
  • t-xp32-ix-XXXX
  • t-w732-ix-XXXX
  • t-w864-ix-XXXX
  • t-w1064-ix-XXXX

Mobile hostname convention


T = type (e.g. panda) Examples:

  • panda-XXXX

Other infra

buildbot-masterXX - for buildbot masters foopyXXX - for foopy machines

Current naming differences

NOTE: Differences are bolded to make it easier to read As of January, 2014 (note that machines have moved to four digits)

Proposed Current
b-linux64-spot-XXXX bld-linux64-spot-XXX
y-linux64-spot-XXXX try-linux64-xpot-XXXX
y-linux32-spot-XXXX try-linux32-xpot-XXXX
b-lion-r#-XXXX bld-lion-r#-XXX
t-linux32-spot-XXXX tst-linux32-spot-XXX
t-linux64-spot-XXXX tst-linux64-spot-XXX
t-linux32-ix-XXXX talos-linux32-ix-XXX
t-linux64-ix-XXXX talos-linux64-ix-XXX
t-snow-r4-XXXX talos-r4-snow-XXX
t-mtnlion-r5-XXXX talos-mtnlion-r5-XXX
t-xp32-ix-XXXX t-xp32-ix-XXX
t-w732-ix-XXXX t-w732-ix-XXX
t-w864-ix-XXXX t-w864-ix-XXX