infra/vultr-kubernetes/backend.tf

@@ -9,15 +9,15 @@ terraform {
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = "5.98.0"
+      version = "~> 5.0"
     }
     vultr = {
       source = "vultr/vultr"
-      version = "2.26.0"
+      version = "2.22.1"
     }
     kubernetes = {
       source  = "hashicorp/kubernetes"
-      version = "2.37.1"
+      version = "2.34.0"
     }
   }
 }

infra/vultr-kubernetes/cluster.tf

@@ -2,16 +2,29 @@ resource vultr_kubernetes athens {
   region = var.cluster.region
   version = var.cluster.version
   label = var.cluster.label
-
+  # BUG: only have this set when creating the resource for the first time
+  # once the cluster is up, we should comment this out again
+  # enable_firewall = true
   node_pools {
-    node_quantity = var.cluster.pools["main"].min_nodes
+    node_quantity = 1
-    plan          = var.cluster.pools["main"].plan
+    plan      = var.cluster.pools["meta"].plan
-    label         = var.cluster.pools["main"].label
+    label     = var.admin_services.namespace
-    min_nodes     = var.cluster.pools["main"].min_nodes
+    min_nodes = var.cluster.pools["meta"].min
-    max_nodes     = var.cluster.pools["main"].max_nodes
+    max_nodes = var.cluster.pools["meta"].max
+    # tag       = var.admin_services.namespace
   }
 }
 
+resource vultr_kubernetes_node_pools games {
+  cluster_id = vultr_kubernetes.athens.id
+  node_quantity = var.cluster.pools["games"].min
+  plan      = var.cluster.pools["games"].plan
+  label     = var.game_servers.namespace
+  min_nodes = var.cluster.pools["games"].min
+  max_nodes = var.cluster.pools["games"].max
+  tag       = var.game_servers.namespace
+}
+
 output k8s_config {
   value = vultr_kubernetes.athens.kube_config
   sensitive = true

infra/vultr-kubernetes/dev/.gitignore

@@ -0,0 +1,4 @@
+# created by virtualenv automatically
+bin/
+lib/
+

infra/vultr-kubernetes/dev/find-server.py

@@ -0,0 +1,59 @@
+from argparse import ArgumentParser
+from argparse import Namespace
+from kubernetes import client, config
+import re
+
+def get_args() -> Namespace:
+    parser = ArgumentParser(
+        prog="Cluster Search Thing",
+        description="General utility for finding resources for game server bot"
+    )
+    games = {"health", "reflex", "minecraft"}
+    parser.add_argument('-g', '--game', required=False, choices=games)
+
+    admin = {"health"}
+    parser.add_argument('-a', '--admin', required=False, choices=admin)
+    return parser.parse_args()
+
+def k8s_api(config_path: str) -> client.api.core_v1_api.CoreV1Api:
+    config.load_kube_config("../config.yaml")
+    return client.CoreV1Api()
+
+def get_admin_service_details(args: ArgumentParser, api: client.api.core_v1_api.CoreV1Api):
+    print('admin thing requested', args.admin)
+    services = api.list_service_for_all_namespaces(label_selector=f'app={args.admin}')
+    if len(services.items) == 0:
+        print(f'Unable to find {args.admin} amongst the admin-services')
+        return
+    
+    port = services.items[0].spec.ports[0].port
+    node_ips = list(filter(lambda a: a.type == 'ExternalIP', api.list_node().items[0].status.addresses))
+    ipv4 = list(filter(lambda item: not re.match('[\d\.]{3}\d', item.address), node_ips))[0].address
+    ipv6 = list(filter(lambda item: re.match('[\d\.]{3}\d', item.address), node_ips))[0].address
+    
+    print(f'{args.admin} --> {ipv4}:{port} ~~> {ipv6}:{port}')
+
+def get_game_server_ip(args: ArgumentParser, api: client.api.core_v1_api.CoreV1Api):
+    services = api.list_service_for_all_namespaces(label_selector=f'app={args.game}')
+    port = services.items[0].spec.ports[0].port
+
+    # Collecting the IPV4 of the node that contains the pod(container)
+    # we actually care about. Since these pods only have 1 container
+    # Now we collect specific data about the game server we requested
+    node_ips  = list(filter(lambda a: a.type == 'ExternalIP', api.list_node().items[0].status.addresses))
+    ipv4 = list(filter(lambda item: not re.match('[\d\.]{3}\d', item.address), node_ips))[0].address
+    ipv6 = list(filter(lambda item: re.match('[\d\.]{3}\d', item.address), node_ips))[0].address
+    
+    print(f'{args.game} --> {ipv4}:{port} ~~> {ipv6}:{port}')
+
+
+if __name__ == '__main__':
+    args = get_args()
+    api = k8s_api('../config.yaml')
+
+    if args.game:
+        get_game_server_ip(args, api)
+    
+    if args.admin:
+        get_admin_service_details(args, api)
+    

infra/vultr-kubernetes/dev/pyvenv.cfg

@@ -0,0 +1,8 @@
+home = /usr
+implementation = CPython
+version_info = 3.10.12.final.0
+virtualenv = 20.13.0+ds
+include-system-site-packages = false
+base-prefix = /usr
+base-exec-prefix = /usr
+base-executable = /usr/bin/python3

infra/vultr-kubernetes/dev/requirements.txt

@@ -0,0 +1,18 @@
+cachetools==5.5.0
+certifi==2024.8.30
+charset-normalizer==3.4.0
+durationpy==0.9
+google-auth==2.36.0
+idna==3.10
+kubernetes==31.0.0
+oauthlib==3.2.2
+pyasn1==0.6.1
+pyasn1_modules==0.4.1
+python-dateutil==2.9.0.post0
+PyYAML==6.0.2
+requests==2.32.3
+requests-oauthlib==2.0.0
+rsa==4.9
+six==1.17.0
+urllib3==2.2.3
+websocket-client==1.8.0

infra/vultr-kubernetes/game-server.tf

@@ -0,0 +1,55 @@
+resource kubernetes_namespace game-servers {
+    count = length(var.game_servers.configs) > 0 ? 1 : 0
+    metadata {
+        name = var.game_servers.namespace
+    }
+}
+
+resource kubernetes_pod game {
+    for_each = var.game_servers.configs
+
+    metadata {
+        name = each.key
+        namespace = var.game_servers.namespace
+        labels = {
+            app = each.key
+        }
+    }
+    spec {
+        container {
+            image = each.value.image
+            name  = coalesce(each.value.name, each.key)
+            resources {
+                limits = {
+                    cpu    = each.value.cpu
+                    memory = each.value.mem
+                }
+            }
+            port {
+                container_port = each.value.port.internal
+                protocol       = coalesce(each.value.proto, "TCP")
+            }
+        }
+    }
+}
+
+resource kubernetes_service game {
+    for_each = var.game_servers.configs
+    metadata {
+        name = each.key
+        namespace = var.game_servers.namespace
+        labels = {
+            app = each.key
+        }
+    }
+    spec {
+        selector = {
+            app = each.key
+        }
+        port {
+            target_port        = each.value.port.internal
+            port   = each.value.port.expose
+        }
+        type = "NodePort"
+    }
+}

infra/vultr-kubernetes/variables.tf

@@ -26,31 +26,46 @@ variable cluster {
     label   = string
     version = string
     pools = map(object({
-      node_quantity = number
+      plan = string
-      plan          = string
+      autoscale = bool
-      label         = string
+      min = number
-      min_nodes     = number
+      max = number
-      max_nodes     = number
-      tag           = string
     }))
   })
 }
 
-# variable admin_services {
+variable game_servers {
-#   type = object({
+  type = object({
-#     namespace = string
+    namespace = string
-#     configs = map(object({
+    configs = map(object({
-#       name  = string
+      name  = optional(string)
-#       image = string
+      image = string
-#       cpu   = string
+      cpu   = string
-#       mem   = string
+      mem   = string
-#       port  = object({
+      port  = object({
-#         notes = optional(string)
+        internal = number
-#         internal = number
+        expose   = number
-#         expose   = number
+      })
-#       })
+      proto = optional(string)
-#       proto = optional(string)
+    }))
-#     }))
+  })
-#   })
+}
-# }
+
+variable admin_services {
+  type = object({
+    namespace = string
+    configs = map(object({
+      name  = string
+      image = string
+      cpu   = string
+      mem   = string
+      port  = object({
+        notes = optional(string)
+        internal = number
+        expose   = number
+      })
+      proto = optional(string)
+    }))
+  })
+}
 

infra/vultr-kubernetes/variables.tfvars

@@ -1,15 +1,42 @@
 cluster = {
   region = "lax"
   label   = "athens-cluster"
-  version = "v1.33.0+1"
+  version = "v1.31.2+1"
   pools = {
-    main = {
+    meta = {
-      node_quantity = 1
+      plan =  "vc2-1c-2gb"
-      plan          =  "vc2-1c-2gb"
+      autoscale = true
-      label         = "main"
+      min = 1
-      min_nodes     = 1
+      max = 2
-      max_nodes     = 2
+    }
-      tag           = "athens-main"
+    games = {
+      plan =  "vc2-1c-2gb"
+      autoscale = true
+      min = 1
+      max = 3
     }
   }
-}
+}
+
+game_servers = {
+  namespace = "games"
+  configs = {
+  }
+}
+
+admin_services = {
+  namespace = "admin-services"
+  configs = {
+    health = {
+      image = "nginx:latest"
+      name  = "health"
+      cpu   = "200m"
+      mem   = "64Mi"
+      port  = {
+        notes    = "Basic nginx sanity check service"
+        expose   = 30800
+        internal = 80
+      }
+    }
+  }
+}