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Merged
phbnf merged 1 commit into from
Feb 18, 2026
Merged

Switch to maps to define load balancer backends #705

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51 changes: 25 additions & 26 deletions deployment/live/gcp/static-ct-staging/loadbalancer/.terraform.lock.hcl
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7 changes: 5 additions & 2 deletions deployment/live/gcp/static-ct-staging/loadbalancer/terragrunt.hcl
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Original file line number Diff line number Diff line change
Expand Up @@ -6,10 +6,13 @@ locals {
env = "staging"
project_id = get_env("GOOGLE_PROJECT", "static-ct-staging")
location = get_env("GOOGLE_REGION", "us-central1")
log_location = get_env("GOOGLE_REGION", "us-central1")
log_names = ["arche2025h1", "arche2025h2", "arche2026h1"]
submission_host_suffix = ".staging.ct.transparency.dev"
enable_cloud_armor = true
logs = {
"arche2025h1" = "us-central1"
"arche2025h2" = "us-central1"
"arche2026h1" = "us-central1"
}
}

inputs = local
Expand Down
24 changes: 12 additions & 12 deletions deployment/modules/gcp/loadbalancer/external/main.tf
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Expand Up @@ -18,7 +18,7 @@ module "gce-lb-http" {
ssl = true
// Create one cert per log, wildcard certificates are not supported.
// Put staging.ct.transparency.dev first for it be used as the Common Name.
managed_ssl_certificate_domains = concat(["staging.ct.transparency.dev"], [for log_name in var.log_names : "${log_name}.staging.ct.transparency.dev"])
managed_ssl_certificate_domains = concat(["staging.ct.transparency.dev"], [for log_name, _ in var.logs: "${log_name}.staging.ct.transparency.dev"])
random_certificate_suffix = true

// Firewalls are defined externally.
Expand All @@ -30,8 +30,8 @@ module "gce-lb-http" {
// Use the Cloud Armor policy, if it's enabled.
security_policy = one(module.cloud_armor[*].policy.self_link)

backends = { for log_name in var.log_names :
"${log_name}-backend" => {
backends = { for name, region in var.logs:
"${name}-backend" => {
protocol = "HTTP"
port = 80
port_name = "http"
Expand All @@ -55,7 +55,7 @@ module "gce-lb-http" {
groups = [
{
// A Backend group must have beed deployed independently at this URI.
group = "projects/${var.project_id}/regions/${var.log_location}/instanceGroups/${log_name}-instance-group-manager"
group = "projects/${var.project_id}/regions/${region}/instanceGroups/${name}-instance-group-manager"
balancing_mode = "RATE"
// Based on the most recent load tests /docs/performance.md
// Caution:
Expand Down Expand Up @@ -86,20 +86,20 @@ resource "google_compute_url_map" "url_map" {
}

dynamic "host_rule" {
for_each = var.log_names
iterator = log_name
for_each = var.logs
iterator = log
content {
hosts = ["${log_name.value}${var.submission_host_suffix}"]
path_matcher = "${log_name.value}-path-matcher"
hosts = ["${log.key}${var.submission_host_suffix}"]
path_matcher = "${log.key}-path-matcher"
}
}

dynamic "path_matcher" {
for_each = var.log_names
iterator = log_name
for_each = var.logs
iterator = log

content {
name = "${log_name.value}-path-matcher"
name = "${log.key}-path-matcher"

// TODO(phboneff): point at json once we have it
default_url_redirect {
Expand All @@ -116,7 +116,7 @@ resource "google_compute_url_map" "url_map" {
"/ct/v1/add-chain",
"/ct/v1/get-roots",
]
service = module.gce-lb-http.backend_services["${log_name.value}-backend"].self_link
service = module.gce-lb-http.backend_services["${log.key}-backend"].self_link
}
}
}
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11 changes: 3 additions & 8 deletions deployment/modules/gcp/loadbalancer/external/variables.tf
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Expand Up @@ -3,21 +3,16 @@ variable "project_id" {
type = string
}

variable "log_names" {
description = "Name of logs wired to the load balancer."
type = list(string)
variable "logs" {
description = "Map of log names to regions."
type = map(string)
}

variable "submission_host_suffix" {
description = "Submission host suffix, appended to each log name."
type = string
}

variable "log_location" {
description = "Location in which log resources are."
type = string
}

variable "enable_cloud_armor" {
description = "Whether or not to enable Cloud Armor for the load balancer."
type = bool
Expand Down
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