Replace vector-archiver with logarchiver (#308)

## Why

The Vector archiver leg wrote gzip NDJSON to S3 with no index or encryption. logarchiver replaces it with a Go service that seals raw logs to S3 as zstd + OpenPGP objects and indexes each object in ClickHouse (`logs.archive_index`), acking JetStream only after the object is stored and indexed.

## Changes

- Add logarchiver Deployment (`git.unkin.net/unkin/logarchiver:v0.1.0`), ConfigMap, and dedicated ServiceAccount, reusing the archiver's NATS (`log-consumer` / durable `archiver` / `ARCHIVE_SUBJECTS=logs.k8s.vault.>`), S3 (`logs-archive-s3`), ClickHouse (`clickhouse-credentials`) and `vault-ca` wiring.
- Encrypts to the `logarchive` gpg public key, fetched from the gpg engine via k8s auth (role `logging_logarchiver`, projected vault-audience token). `ack_wait` (5m) > batch `max_age` (2m) so messages aren't redelivered mid-batch.
- Add `logs.archive_index` DDL to the clickhouse-schema bootstrap Job (no TTL — outlives `logs.raw`).
- Remove the vector-archiver Helm release, values and pipeline ConfigMap.

Cross-repo: apply **terraform-vault #106** (gpg key + role/policy) before this syncs, or the pod can't fetch the public key. Sequencing: apply after #306 (already merged).

https://claude.ai/code/session_015ur3i7D2azsMAWTSVABApv
---------

Co-authored-by: benvin <neotheo@gmail.com>
Reviewed-on: #308
Co-authored-by: Ben Vincent <ben@unkin.net>
Co-committed-by: Ben Vincent <ben@unkin.net>
This commit was merged in pull request #308.
This commit is contained in:
2026-07-29 21:07:20 +10:00
committed by BenVincent
parent 96afbcf5e1
commit 9c10b9096a
9 changed files with 214 additions and 135 deletions
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---
# Vector ARCHIVER tier — long-term raw-log backup to S3 (Ceph RGW). Independent
# durable JetStream consumer (`archiver`) so its offsets/lag are fully isolated
# from the ClickHouse transform path (archive lag can never stall ingest — true
# fan-out). Writes RAW, pre-transform events (as they sit in JetStream) as
# gzipped NDJSON, partitioned by subject + date. This is the long-horizon replay
# source beyond JetStream's 3d retention window.
data_dir: /vector-data-dir
api:
enabled: true
address: 0.0.0.0:8686
sources:
js_archive:
type: nats
url: nats://nats.logging.svc.cluster.local:4222
connection_name: vector-archiver
subject: "logs.>"
jetstream:
stream: LOGS
consumer: archiver
auth:
strategy: user_password
user_password:
user: log-consumer
password: ${NATS_CONSUMER_PASSWORD}
decoding:
codec: json
sinks:
s3:
type: aws_s3
inputs:
- js_archive
bucket: logs-archive
endpoint: https://s3.ceph.unkin.net
region: us-east-1
force_path_style: true
tls:
ca_file: /etc/vault-ca/ca.crt
# AWS_ACCESS_KEY_ID / AWS_SECRET_ACCESS_KEY come from the logs-archive-s3
# Secret (cephrgw-operator) via envFrom on the deployment.
key_prefix: "raw/{{ subject }}/%Y/%m/%d/"
compression: gzip
encoding:
codec: json
framing:
method: newline_delimited
filename_time_format: "%Y%m%dT%H%M%SZ"
filename_append_uuid: true
batch:
max_bytes: 134217728
timeout_secs: 300
buffer:
type: memory
max_events: 5000
when_full: block
# Disabled so slow BucketAccess credential propagation doesn't crash-loop
# the pod; RGW reachability is proven by the operator's own health.
healthcheck:
enabled: false