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add e2e email roundtrip monitoring

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CronJob (every 30 min) sends test email via Mailgun API to
smoke-test@viktorbarzin.me, verifies IMAP delivery in spam@ catch-all,
deletes test email, pushes metrics to Pushgateway + Uptime Kuma.

Prometheus alerts: EmailRoundtripFailing, EmailRoundtripStale,
EmailRoundtripNeverRun. Uptime Kuma: SMTP/IMAP port checks + E2E push.
This commit is contained in:
Viktor Barzin 2026-03-25 22:50:22 +02:00
parent b9c2d7c1f6
commit 78dec8f0ad
5 changed files with 256 additions and 19 deletions
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27
stacks/mailserver/main.tf
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@ -11,6 +11,11 @@ data "vault_kv_secret_v2" "secrets" {
name = "platform"
}
data "vault_kv_secret_v2" "viktor" {
mount = "secret"
name = "viktor"
}
locals {
mailserver_accounts = jsondecode(data.vault_kv_secret_v2.secrets.data["mailserver_accounts"])
mailserver_aliases = jsondecode(data.vault_kv_secret_v2.secrets.data["mailserver_aliases"])
@ -19,14 +24,16 @@ locals {
}
module "mailserver" {
source = "./modules/mailserver"
tls_secret_name = var.tls_secret_name
nfs_server = var.nfs_server
mysql_host = var.mysql_host
mailserver_accounts = local.mailserver_accounts
postfix_account_aliases = local.mailserver_aliases
opendkim_key = local.mailserver_opendkim_key
sasl_passwd = local.mailserver_sasl_passwd
roundcube_db_password = data.vault_kv_secret_v2.secrets.data["mailserver_roundcubemail_db_password"]
tier = local.tiers.edge
source = "./modules/mailserver"
tls_secret_name = var.tls_secret_name
nfs_server = var.nfs_server
mysql_host = var.mysql_host
mailserver_accounts = local.mailserver_accounts
postfix_account_aliases = local.mailserver_aliases
opendkim_key = local.mailserver_opendkim_key
sasl_passwd = local.mailserver_sasl_passwd
roundcube_db_password = data.vault_kv_secret_v2.secrets.data["mailserver_roundcubemail_db_password"]
tier = local.tiers.edge
mailgun_api_key = data.vault_kv_secret_v2.viktor.data["mailgun_api_key"]
email_monitor_imap_password = local.mailserver_accounts["spam@viktorbarzin.me"]
}