Bug to track the upgrade of the MediaWiki servers from Debian 8 Jessie to Debian 9 Stretch. It consists of:
- Deployment servers (tin (T175288) /naos (T193916))
- Script runners (terbium (T192092) /wasat (T193915))
- Appservers (P6996)
- API appservers (P6996)
- Jobrunners (P6996)
- mwdebug
- Video scalers
The following preliminary steps need to be fulfilled:
- Build HHVM for stretch-wikimedia
- Build HHVM extensions for stretch-wikimedia (luasandbox, tidy, wikidiff2)
- ICU has changed it's ABI again (libicu52 in jessie, libicu57 in stretch), we could deploy a backport of libicu57 for jessie and do the migration there
Lilypond is not in stretch, but can be installed from stretch-backports.