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[ci skip] revert MySQL to NFS — Bitnami images unavailable on Docker Hub

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Bitnami MySQL images can't be pulled (not found on Docker Hub, likely
moved to a different registry). Reverted MySQL to single instance on
NFS as the known-working state. MySQL replication to be revisited
once image availability is resolved.

PostgreSQL and Redis remain on local disk with replication.
This commit is contained in:
Viktor Barzin 2026-02-28 22:53:33 +00:00
parent f9a4823ccc
commit c20312e41f
1 changed files with 2 additions and 80 deletions
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82
stacks/platform/modules/dbaas/main.tf
View file

@ -34,55 +34,26 @@ resource "kubernetes_config_map" "mycnf" {
metadata {
name = "mycnf"
namespace = kubernetes_namespace.dbaas.metadata[0].name
annotations = {
"reloader.stakater.com/match" = "true"
}
}
data = {
"my.cnf" = <<-EOT
# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/8.2/en/server-configuration-defaults.html
[mysqld]
#
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
#
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
#
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
# Remove leading # to revert to previous value for default_authentication_plugin,
# this will increase compatibility with older clients. For background, see:
# https://dev.mysql.com/doc/refman/8.2/en/server-system-variables.html#sysvar_default_authentication_plugin
# default-authentication-plugin=mysql_native_password
#skip-host-cache
skip-name-resolve
datadir=/var/lib/mysql
socket=/var/run/mysqld/mysqld.sock
secure-file-priv=/var/lib/mysql-files
user=mysql
#innodb_force_recovery = 6
#log_error_verbosity = 6
pid-file=/var/run/mysqld/mysqld.pid
[client]
socket=/var/run/mysqld/mysqld.sock
!includedir /etc/mysql/conf.d/
EOT
}
}
resource "kubernetes_service" "mysql" {
metadata {
name = var.cluster_master_service
@ -98,24 +69,7 @@ resource "kubernetes_service" "mysql" {
}
}
# Local PVC for MySQL data — proper fsync, no NFS SPOF
resource "kubernetes_persistent_volume_claim" "mysql" {
metadata {
name = "mysql-data"
namespace = kubernetes_namespace.dbaas.metadata[0].name
}
spec {
access_modes = ["ReadWriteOnce"]
storage_class_name = "local-path"
resources {
requests = {
storage = "10Gi"
}
}
}
wait_until_bound = false
}
# MySQL — single instance on NFS (temporary, pending replication migration)
resource "kubernetes_deployment" "mysql" {
metadata {
name = "mysql"
@ -144,31 +98,6 @@ resource "kubernetes_deployment" "mysql" {
}
}
spec {
# Seed data from NFS on first run (local PVC empty)
init_container {
name = "seed-data"
image = "busybox:1.36"
command = ["/bin/sh", "-c", <<-EOT
if [ ! -d /data/mysql ]; then
echo "No local data found, copying from NFS..."
cp -a /nfs-data/. /data/
echo "Done — $(du -sh /data/ | cut -f1) copied"
else
echo "Local data exists, skipping seed"
fi
EOT
]
volume_mount {
name = "mysql-persistent-storage"
mount_path = "/data"
}
volume_mount {
name = "nfs-data"
mount_path = "/nfs-data"
read_only = true
}
}
container {
image = "mysql:9.2.0"
name = "mysql"
@ -204,13 +133,6 @@ resource "kubernetes_deployment" "mysql" {
}
volume {
name = "mysql-persistent-storage"
persistent_volume_claim {
claim_name = kubernetes_persistent_volume_claim.mysql.metadata[0].name
}
}
# NFS volume for init container seeding only
volume {
name = "nfs-data"
nfs {
path = "/mnt/main/mysql"
server = var.nfs_server