Skip to content

chore(prod): downsize gr-postgres + gr-mqtt for off-season #108

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
BK1031 merged 1 commit into from
Jun 26, 2026
Merged

chore(prod): downsize gr-postgres + gr-mqtt for off-season #108

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
11 changes: 8 additions & 3 deletions infra/environments/prod/main.tf
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -71,8 +71,9 @@ module "origin_cert" {

# Postgres on EC2. Lives in the EKS VPC so pods reach it via private IP;
# SG-locked to traffic originating from the EKS node SG so nothing outside
# the cluster can connect. ARM/Graviton t4g.large (8 GiB) — bumped from
# t4g.medium after the OOM under NUM_WORKERS=4 ingest pressure.
# the cluster can connect. Off-season — running on t4g.small to keep
# cost down; bump back to t4g.large before resuming NUM_WORKERS=4 ingest
# (the larger size was originally set after an OOM at that workload).
#
# Generated password is in TF state — read with:
# terraform output -raw postgres_password
Expand All @@ -88,7 +89,7 @@ module "postgres" {
subnet_id = module.vpc.public_subnet_ids[0]
availability_zone = "us-west-2a"

instance_type = "t4g.large"
instance_type = "t4g.small"
data_volume_size_gb = 50

# Public IP + open to the internet on 5432. The 32-char random password
Expand Down Expand Up @@ -137,6 +138,10 @@ module "mqtt" {
subnet_id = module.vpc.public_subnet_ids[0]
availability_zone = "us-west-2a"

# Off-season override — NanoMQ runs fine on t4g.nano at idle/low publish
# rates. Drop the override (module default t4g.small) before in-season.
instance_type = "t4g.nano"

associate_public_ip = true
admin_cidr_blocks = ["0.0.0.0/0"]

Expand Down
Loading