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[redis] Raise master+replica memory 256Mi → 512Mi

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256Mi was tight once the working set crossed ~200Mi: a BGSAVE fork
during replica full PSYNC doubled master RSS via COW and pushed it
past the limit, OOMing (exit 137) in a loop. HAProxy flapped, every
client (Paperless, Immich, Authentik, Dawarich) saw session store
failures → 500s on authenticated requests.

512Mi gives ~2x headroom on the current 204Mi RDB.

Closes: code-n81

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Viktor Barzin 2026-04-19 13:18:30 +00:00
parent a5963169ec
commit 83f4a72b6f
1 changed files with 9 additions and 8 deletions
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17
stacks/redis/modules/redis/main.tf
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@ -72,17 +72,18 @@ resource "helm_release" "redis" {
}
}
# 64Mi was too tight: replica OOMed during PSYNC full resync
# (master steady-state 21Mi + COW during AOF rewrite + RDB transfer
# buffer pushed replica RSS past 64Mi, causing 120 restart loops over
# 5+ days before bump to 256Mi).
# 256Mi was too tight once the working set crossed ~200Mi: BGSAVE
# fork during a replica full PSYNC doubled RSS via COW and pushed
# the master past 256Mi → OOMKilled (exit 137), HAProxy flapped,
# every redis client (Paperless, Immich, Authentik) saw connection
# resets. 512Mi gives ~2x headroom on the current 204Mi RDB.
resources = {
requests = {
cpu = "100m"
memory = "256Mi"
memory = "512Mi"
}
limits = {
memory = "256Mi"
memory = "512Mi"
}
}
}
@ -104,10 +105,10 @@ resource "helm_release" "redis" {
resources = {
requests = {
cpu = "50m"
memory = "256Mi"
memory = "512Mi"
}
limits = {
memory = "256Mi"
memory = "512Mi"
}
}
}