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December 1, 2023 13:11
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Terraform deploy Cloudflare Tunnel on K8s
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| resource "random_password" "tunnel_secret" { | |
| count = local.is_mgnt_env ? 1 : 0 | |
| length = 64 | |
| } | |
| # Creates a new locally-managed tunnel for the GCP VM. | |
| resource "cloudflare_tunnel" "auto_tunnel" { | |
| count = local.is_mgnt_env ? 1 : 0 | |
| account_id = var.CF_ACCOUNT_ID | |
| name = "Terraform MGNT Tunnel" | |
| secret = base64sha256(random_password.tunnel_secret[0].result) | |
| } | |
| resource "cloudflare_record" "harbor_registry" { | |
| count = local.is_mgnt_env ? 1 : 0 | |
| zone_id = var.CF_ZONE_ID | |
| name = "registry" | |
| value = cloudflare_tunnel.auto_tunnel[0].cname | |
| type = "CNAME" | |
| proxied = true | |
| } | |
| ## Begin deploy on k8s | |
| resource "kubernetes_namespace" "cloudflared" { | |
| count = local.is_mgnt_env ? 1 : 0 | |
| metadata { | |
| name = "cloudflared" | |
| annotations = {} | |
| labels = {} | |
| } | |
| } | |
| resource "kubernetes_config_map" "cloudflared" { | |
| count = local.is_mgnt_env ? 1 : 0 | |
| metadata { | |
| name = "cloudflared" | |
| namespace = kubernetes_namespace.cloudflared[0].metadata[0].name | |
| } | |
| data = { | |
| "config.yaml" = <<EOT | |
| tunnel: ${cloudflare_tunnel.auto_tunnel[0].id} | |
| credentials-file: /etc/cloudflared/creds/credentials.json | |
| metrics: 0.0.0.0:2000 | |
| no-autoupdate: true | |
| ingress: | |
| - hostname: example.domain.com | |
| path: / | |
| service: service-name | |
| - service: http_status:404 | |
| EOT | |
| } | |
| depends_on = [cloudflare_tunnel.auto_tunnel] | |
| } | |
| resource "kubernetes_secret" "cloudflared" { | |
| count = local.is_mgnt_env ? 1 : 0 | |
| metadata { | |
| name = "cloudflared" | |
| namespace = kubernetes_namespace.cloudflared[0].metadata[0].name | |
| } | |
| data = { | |
| "credentials.json" = jsonencode({ | |
| "AccountTag" = var.CF_ACCOUNT_ID, | |
| "TunnelID" = cloudflare_tunnel.auto_tunnel[0].id, | |
| "TunnelName" = cloudflare_tunnel.auto_tunnel[0].name, | |
| "TunnelSecret" = base64sha256(random_password.tunnel_secret[0].result) | |
| }) | |
| } | |
| type = "kubernetes.io/secret" | |
| depends_on = [cloudflare_tunnel.auto_tunnel] | |
| } | |
| resource "kubernetes_deployment" "cloudflared" { | |
| count = local.is_mgnt_env ? 1 : 0 | |
| metadata { | |
| name = "cloudflared" | |
| namespace = kubernetes_namespace.cloudflared[0].metadata[0].name | |
| } | |
| spec { | |
| replicas = 2 | |
| selector { | |
| match_labels = { | |
| app = "cloudflared" | |
| } | |
| } | |
| template { | |
| metadata { | |
| labels = { | |
| app = "cloudflared" | |
| } | |
| } | |
| spec { | |
| volume { | |
| name = "creds" | |
| secret { | |
| secret_name = "cloudflared" | |
| } | |
| } | |
| volume { | |
| name = "config" | |
| config_map { | |
| name = "cloudflared" | |
| } | |
| } | |
| container { | |
| image = "cloudflare/cloudflared:2023.10.0" | |
| name = "cloudflared" | |
| args = ["tunnel", "--config", "/etc/cloudflared/config/config.yaml", "run"] | |
| liveness_probe { | |
| http_get { | |
| path = "/ready" | |
| port = 2000 | |
| } | |
| initial_delay_seconds = 1 | |
| period_seconds = 10 | |
| failure_threshold = 1 | |
| } | |
| volume_mount { | |
| name = "config" | |
| mount_path = "/etc/cloudflared/config" | |
| read_only = true | |
| } | |
| volume_mount { | |
| name = "creds" | |
| mount_path = "/etc/cloudflared/creds" | |
| read_only = true | |
| } | |
| } | |
| } | |
| } | |
| } | |
| depends_on = [kubernetes_config_map.cloudflared, kubernetes_secret.cloudflared, kubernetes_namespace.cloudflared] | |
| } |
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