Halloumi2025h2 and Gouda2025h2

[Pim van Pelt]

Hoi folks,

The write window for these two logs has closed on 2026-01-01 and here's
our plan for these two production logs:

1. I am making a photocopy of them today, Gouda is a Sunlight log and
Halloumi is a TesseraCT log.
2. On Weds 14th, I will:
a) remove the write path for these (down the TesseraCT job, reload the
Sunlight job, removing the logshard entries from their YAML file)
b) Remove upstream *.log.ct.ipng.ch nginx entry for the write path.
c) Publish the ZIP files to our S3 cluster and index them.
d) Update ct.ipng.ch page and publish
https://ct.ipng.ch/archive/halloumi2025h2/ and
https://ct.ipng.ch/archive/gouda2025h2/
e) Send PR for https://github.com/geomys/ct-archive/README.md
3. On Weds January 21st, I will:
a) Remove upstream *.mon.ct.ipng.ch read path nginx entry
b) Remove DNS entries for the log shards (halloumi2025h2.mon.ct.ipng.ch
and halloumi2025h2.log.ct.ipng.ch
4. On Weds January 28th, I will remove the ZFS dataset (zfs destroy
ssd-vol0/logs/halloumi2025h2)

Since this is the first time we're transitioning a completed logshard, I
welcome any feedback or tweaks to our proposed plan.

groet,
Pim (obo IPng CT Ops)
--
Pim van Pelt <p...@ipng.ch>
PBVP1-RIPE https://ipng.ch/