Tracking task for upgrading Analytics systems to Debian Buster.
* Q3 2019/2020
[ ] Matomo (probably worth to create matomo1002?) - IN PROGRESS
[ ] Archiva (probably worth to create archiva1002?) - IN PROGRESS
* Q4 2019/2020
[ ] stat100[4,6,7]
[ ] ~~Notebooks - easier after T243934, probably we are going to decom them ~~ decom tracked in T249752
[ ] Yarn and Hue (analytics-tool1001) - This probably will need Packaging Hue for Python3, see T233073
[ ] Kafka Jumbo - First Kafka brokers on Buster in T252675 - IN PROGRESS
[ ] kafkamon - IN PROGRESS (shared with The SRE Observability team)
* Q1 2020/2021
[ ] Hadoop (needs BigTop 1.5 deployed)
[ ] Druid Analytics - First Druid nodes on Buster in T252771 - IN PROGRESS
[ ] Druid Public
[ ] Event Schema hosts
* Q2 2020/2021
[ ] AQS
[ ] Eventlogging (we may decom the host due to T238230 before time)
[ ] Thorium - the host needs to be refreshed next FY so we can possibly couple the two things
Relevant task: find a partman recipe able to preserve /srv - T252027