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tkc-1.tf
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#
# TKC Demo
#
# John D. Allen
# Global Solutions Architect - Cloud, IOT, & Automation
# A10 Networks, Inc.
# Apache v2.0 License applies.
# June, 2021
#
provider "kubernetes" {
alias = "cloud1"
config_path = var.prov_config_path_1
}
#------------------------------------------------------------------#
resource "kubernetes_namespace" "cyan" {
provider = kubernetes.cloud1
depends_on = [
thunder_virtual_server.ws-vip
]
metadata {
name = "cyan"
}
}
#------------------------------------------------------------------#
resource "kubernetes_cluster_role_binding" "rbac" {
provider = kubernetes.cloud1
metadata {
name = "th-secret-rbac"
}
subject {
kind = "ServiceAccount"
name = "default"
namespace = kubernetes_namespace.cyan.metadata[0].name
}
role_ref {
api_group = "rbac.authorization.k8s.io"
kind = "ClusterRole"
name = "cluster-admin"
}
}
#------------------------------------------------------------------#
resource "kubernetes_secret" "thunder-secret" {
provider = kubernetes.cloud1
metadata {
name = "thunder-access-creds"
}
data = {
username = var.thunder_username
password = var.thunder_password
}
}
#------------------------------------------------------------------#
resource "kubernetes_config_map" "ws-config" {
provider = kubernetes.cloud1
depends_on = [
kubernetes_namespace.cyan
]
metadata {
name = "ws-conf-file"
namespace = kubernetes_namespace.cyan.metadata[0].name
}
data = {
"ws.conf" = <<EOF
server {
listen 80 default_server;
server_name app_server;
root /usr/share/nginx/html;
error_log /var/log/nginx/app-server-error.log notice;
index index.html;
expires -1;
sub_filter_once off;
sub_filter 'server_hostname' '$hostname';
sub_filter 'server_address' '$server_addr:$server_port';
sub_filter 'remote_addr' '$remote_addr:$remote_port';
sub_filter 'client_browser' '$http_user_agent';
sub_filter 'document_root' '$document_root';
sub_filter 'proxied_for_ip' '$http_x_forwarded_for';
}
EOF
}
}
#------------------------------------------------------------------#
resource "kubernetes_config_map" "ws-index" {
provider = kubernetes.cloud1
depends_on = [
kubernetes_namespace.cyan
]
metadata {
name = "ws-index-file"
namespace = kubernetes_namespace.cyan.metadata[0].name
}
data = {
"index.html" = <<EOF
<!DOCTYPE html>
<html>
<head>
<title>A10 Testing Webpage</title>
<style>
body {
margin: 0px;
font: 20px 'RobotoRegular', Arial, sans-serif;
font-weight: 100;
height: 100%;
color: #000000;
}
img {
width: 200px;
margin: 35px auto 35px auto;
display:block;
}
div.disp {
display: table;
background: #D8FEFC;
padding: 20px 20px 20px 20px;
border: 2px black;
border-radius: 12px;
margin: 0px auto auto auto;
}
div.disp p {
display: table-row;
margin: 5px auto auto auto;
}
div.disp p span {
display: table-cell;
padding: 10px;
}
h1, h2 {
font-weight: 100;
}
div.check {
padding: 0px 0px 0px 0px;
display: table;
margin: 35px auto auto auto;
font: 12px 'RobotoRegular', Arial, sans-serif;
}
#center {
width: 400px;
margin: 0 auto;
font: 12px Courier;
}
</style>
<script>
var ref;
function checkRefresh() {
if (document.cookie == "refresh=1") {
document.getElementById("check").checked = true;
ref = setTimeout(function(){location.reload();}, 500);
}
}
function changeCookie() {
if (document.getElementById("check").checked) {
document.cookie = "refresh=1";
ref = setTimeout(function(){location.reload();}, 500);
} else {
document.cookie = "refresh=0";
clearTimeout(ref);
}
}
</script>
</head>
<body onload="checkRefresh();">
<div class="disp">
<br>
<h2>A10 Webserver Demo Page</h2>
<p><span>This is a test web page running on a Kubernetes Cluster.</span></p>
<p><span>Server Name:</span> <span>server_hostname</span></p>
<p><span>Server Address:</span> <span>server_address</span></p>
<p><span>UA:</span> <span>client_browser</span></p>
</div>
<div class="check">
<input type="checkbox" id="check" onchange="changeCookie()"> Auto Refresh</input>
</div>
</body>
</html>
EOF
}
}
#------------------------------------------------------------------#
resource "kubernetes_deployment" "webservers" {
provider = kubernetes.cloud1
depends_on = [
kubernetes_config_map.ws-config,
kubernetes_config_map.ws-index
]
metadata {
name = "webserver"
namespace = kubernetes_namespace.cyan.metadata[0].name
}
spec {
selector {
match_labels = {
app = "webserver"
}
}
replicas = 3
template {
metadata {
labels = {
app = "webserver"
}
}
spec {
container {
name = "nginx"
image = "nginx:latest"
image_pull_policy = "IfNotPresent"
port {
container_port = 80
}
volume_mount {
mount_path = "/usr/share/nginx/html/index.html"
sub_path = "index.html"
read_only = true
name = "ws-index-file"
}
volume_mount {
mount_path = "/etc/nginx/conf.d/"
read_only = true
name = "ws-conf-file"
}
}
volume {
name = "ws-index-file"
config_map {
name = "ws-index-file"
items {
key = "index.html"
path = "index.html"
}
}
}
volume {
name = "ws-conf-file"
config_map {
name = "ws-conf-file"
items {
key = "ws.conf"
path = "ws.conf"
}
}
}
}
}
}
}
#------------------------------------------------------------------#
resource "kubernetes_service" "webserverSvc" {
provider = kubernetes.cloud1
depends_on = [
kubernetes_deployment.webservers
]
metadata {
name = "webserver-svc"
namespace = kubernetes_namespace.cyan.metadata[0].name
}
spec {
selector = {
app = "webserver"
}
type = "NodePort"
port {
name = "http-port"
protocol = "TCP"
port = "8080"
target_port = "80"
}
}
}
#------------------------------------------------------------------#
resource "kubernetes_ingress" "tkcIngress" {
provider = kubernetes.cloud1
depends_on = [
kubernetes_deployment.webservers,
kubernetes_service.webserverSvc
]
metadata {
name = "ingress-resource"
namespace = kubernetes_namespace.cyan.metadata[0].name
annotations = {
"kubernetes.io/ingress.class" = "a10-ext"
"acos.a10networks.com/health-monitors" = "[{\"name\":\"ws-mon\", \"port\":\"80\",\"type\":\"http\"}]"
"webserver-svc.acos.a10networks.com/service-group" = "{\"name\":\"ws-sg\",\"protocol\":\"tcp\",\"monitor\":\"ws-mon\",\"disableMonitor\":false}"
"acos.a10networks.com/virtual-server" = "{\"name\":\"ws-vip\",\"vip\":\"${var.thunder_vip}\"}"
"acos.a10networks.com/virtual-ports" = "[{\"port\":\"80\",\"protocol\":\"http\",\"http2\":false,\"snat\":true}]"
}
}
spec {
rule {
host = "*.gan"
http {
path {
path = "/"
backend {
service_name = "webserver-svc"
service_port = 8080
}
}
}
}
}
}
#------------------------------------------------------------------#
resource "kubernetes_deployment" "tkc" {
provider = kubernetes.cloud1
depends_on = [
kubernetes_ingress.tkcIngress,
kubernetes_secret.thunder-secret
]
metadata {
name = "thunder-kubernetes-connector"
}
spec {
selector {
match_labels = {
app = "thunder-kubernetes-connector"
}
}
replicas = 1
template {
metadata {
labels = {
app = "thunder-kubernetes-connector"
}
}
spec {
container {
name = "thunder-kubernetes-connector"
image = "a10harmony/a10-kubernetes-connector:1.9"
image_pull_policy = "IfNotPresent"
env {
name = "POD_NAMESPACE"
value = "default"
}
env {
name = "WATCH_NAMESPACE"
value = kubernetes_namespace.cyan.metadata[0].name
}
env {
name = "CONTROLLER_URL"
value = "https://${var.thunder_ip_address}"
}
env {
name = "ACOS_USERNAME_PASSWORD_SECRETNAME"
value = kubernetes_secret.thunder-secret.metadata[0].name
}
args = [
"--watch-namespace=$(WATCH_NAMESPACE)",
"--use-node-external-ip=true",
"--patch-to-update=true",
"--safe-acos-delete=true",
"--use-ingress-class-only=true",
"--ingress-class=a10-ext"
]
}
}
}
}
}