bug: stuck

README.md

@@ -1,3 +1,9 @@
 # hetzner-cluster
 
 Create a private Kubernetes cluster on Hetzner Cloud.
+
+## Resources
+
+<https://community.hetzner.com/tutorials/kubernetes-on-hetzner-with-crio-flannel-and-hetzner-balancer>
+
+<https://community.hetzner.com/tutorials/how-to-set-up-nat-for-cloud-networks>

Taskfile.yml

@@ -6,6 +6,7 @@ tasks:
   tf:destroy: ansible-playbook playbooks/destroy.yml {{.CLI_ARGS}}
   configure-nat: ansible-playbook playbooks/configure_nat.yml {{.CLI_ARGS}}
   configure-servers: ansible-playbook playbooks/configure_servers.yml {{.CLI_ARGS}}
+  deploy: ansible-playbook playbooks/install_k8s.yml {{.CLI_ARGS}}
 
   enter:
     cmd: ssh -i {{.KEY}} -p 22 root@{{.IP}}

inventory.cfg

@@ -4,3 +4,4 @@ nat
 [servers]
 node-a
 node-b
+control

playbooks/destroy.yml

@@ -4,7 +4,7 @@
   vars_files:
     - ../vault.yml
   tasks:
-    - name: Destroy
+    - name: Destroy Terraform.
       community.general.terraform:
         project_path: '../terraform'
         state: "absent"

playbooks/install_k8s.yml

@@ -0,0 +1,237 @@
+# - name: Configure compute for the cluster.
+#   hosts: servers
+#   gather_facts: false
+#   vars:
+#     kubernetes_version: v1.30
+#   tasks:
+#     - name: Download Kubernetes key.
+#       ansible.builtin.apt_key:
+#         url: https://pkgs.k8s.io/core:/stable:/{{ kubernetes_version }}/deb/Release.key
+#         state: present
+
+#     - name: Download Kubernetes repository.
+#       ansible.builtin.apt_repository:
+#         repo: "deb https://pkgs.k8s.io/core:/stable:/{{ kubernetes_version }}/deb/ /"
+#         state: present
+
+#     - name: Download CRI-O key.
+#       ansible.builtin.apt_key:
+#         url: https://pkgs.k8s.io/addons:/cri-o:/prerelease:/main/deb/Release.key
+#         state: present
+
+#     - name: Download CRI-O repository.
+#       ansible.builtin.apt_repository:
+#         repo: "deb https://pkgs.k8s.io/addons:/cri-o:/prerelease:/main/deb/ /"
+#         state: present
+
+#     - name: Download Helm key.
+#       ansible.builtin.apt_key:
+#         url: https://packages.buildkite.com/helm-linux/helm-debian/gpgkey
+#         state: present
+
+#     - name: Download Helm repository.
+#       ansible.builtin.apt_repository:
+#         repo: "deb https://packages.buildkite.com/helm-linux/helm-debian/any/ any main"
+#         state: present
+
+#     - name: Install packages.
+#       ansible.builtin.apt:
+#         state: present
+#         update_cache: true
+#         name: [cri-o, kubelet, kubeadm, kubectl, python3-pip, helm, git]
+
+#     - name: Install Kubernetes Python packages.
+#       ansible.builtin.pip:
+#         name: [kubernetes, pyyaml]
+#         state: present
+#         break_system_packages: true
+
+#     - name: Enable `br_netfilter` module.
+#       community.general.modprobe:
+#         name: br_netfilter
+#         state: present
+#       notify: Reboot the nodes.
+
+#     - name: Configure `sysctl` permanently.
+#       ansible.posix.sysctl:
+#         name: '{{ item }}'
+#         value: '1'
+#         state: present
+#         reload: true
+#       loop:
+#         - net.bridge.bridge-nf-call-iptables
+#         - net.ipv4.ip_forward
+
+#   handlers:
+#     - name: Reboot the nodes.
+#       ansible.builtin.reboot:
+
+# - name: Spawn new cluster on control node.
+#   hosts: control
+#   gather_facts: false
+#   vars:
+#     config_template: ../templates/InitConfiguration.yml.jinja2
+#     config:
+#       bootstrap_token: "{{ secrets.bootstrap_token }}"
+#       node_ip: 10.0.2.11
+#       node_name: control
+#   vars_files:
+#     - ../vault.yml
+#   tasks:
+#     - name: Test for cluster.
+#       kubernetes.core.k8s_cluster_info:
+#       register: api_status
+#       ignore_errors: true
+
+#     - name: Copy configuration over.
+#       ansible.builtin.template:
+#         src: "{{ config_template }}"
+#         dest: InitConfiguration.yml
+#         mode: preserve
+#       when: "api_status.failed"
+
+#     - name: Initialize cluster.
+#       ansible.builtin.command:
+#         kubeadm init --config InitConfiguration.yml
+#       changed_when: true
+#       when: "api_status.failed"
+
+#     - name: Apply the Kubernetes config to the shell.
+#       ansible.builtin.lineinfile:
+#         path: /etc/environment
+#         line: 'KUBECONFIG=/etc/kubernetes/admin.conf'
+#       when: "api_status.failed"
+
+# - name: Join worker nodes to cluster.
+#   hosts: [node-a, node-b]
+#   vars:
+#     join_template: ../templates/JoinConfiguration.yml.jinja2
+#     join_control_ip: 10.0.2.11
+#     join_bootstrap_token: "{{ secrets.bootstrap_token }}"
+#   vars_files:
+#     - ../vault.yml
+#   tasks:
+#     - name: Copy join configuration over.
+#       vars:
+#         join_worker_ip: "{{ ansible_default_ipv4.address }}"
+#         join_worker_name: "{{ ansible_hostname }}"
+#       ansible.builtin.template:
+#         src: "{{ join_template }}"
+#         dest: JoinConfiguration.yml
+#         mode: preserve
+
+#     - name: Join the nodes.
+#       ansible.builtin.command:
+#         kubeadm join --config JoinConfiguration.yml
+#       changed_when: true
+
+# - name: Install Helm Diff.
+#   gather_facts: false
+#   hosts: control
+#   tasks:
+#     - name: Install it.
+#       kubernetes.core.helm_plugin:
+#         plugin_path: https://github.com/databus23/helm-diff
+#         state: present
+
+- name: Install CNI.
+  gather_facts: false
+  hosts: control
+  tasks:
+    - name: Assign nodes as workers.
+      kubernetes.core.k8s:
+        state: patched
+        kind: Node
+        name: "{{ item }}"
+        definition:
+          metadata:
+            labels:
+              node-role.kubernetes.io/worker: worker
+      loop: [node-a, node-b]
+
+    - name: Create Flannel namespace.
+      kubernetes.core.k8s:
+        state: present
+        kind: Namespace
+        name: kube-flannel
+
+    - name: Add privilege to the namespace.
+      kubernetes.core.k8s:
+        state: patched
+        kind: Namespace
+        name: kube-flannel
+        definition:
+          metadata:
+            labels:
+              pod-security.kubernetes.io/enforce: privileged
+
+    - name: Add Flannel repository.
+      kubernetes.core.helm_repository:
+        name: flannel
+        url: https://flannel-io.github.io/flannel/
+        state: present
+
+    - name: Install Flannel.
+      kubernetes.core.helm:
+        name: flannel
+        chart_ref: flannel/flannel
+        namespace: kube-flannel
+        values:
+          podCidr: 10.244.0.0/16
+        state: present
+
+    - name: Patch CoreDNS deployment.
+      kubernetes.core.k8s_json_patch:
+        name: coredns
+        namespace: kube-system
+        kind: Deployment
+        patch:
+          - op: add
+            path: /spec/template/spec/tolerations/-
+            value:
+              key: node.cloudprovider.kubernetes.io/uninitialized
+              value: "true"
+              effect: NoSchedule
+
+- name: Install `nginx` Controller.
+  gather_facts: false
+  hosts: control
+  vars_files:
+    - ../vault.yml
+    - ../secrets/tf_outputs.yml
+  tasks:
+    - name: Remove schedule taint to nodes.
+      kubernetes.core.k8s_taint:
+        state: absent
+        name: "{{ item }}"
+        taints:
+          - key: node.cloudprovider.kubernetes.io/uninitialized
+            value: true
+            effect: NoSchedule
+      loop: [node-a, node-b]
+
+    - name: Add `ingress-nginx` repository.
+      kubernetes.core.helm_repository:
+        name: ingress-nginx
+        url: https://kubernetes.github.io/ingress-nginx
+        state: present
+
+    - name: Copy over values file.
+      vars:
+        values_template: ../templates/IngressValues.yml.jinja2
+        load_balancer_name: "{{ variables.load_balancer_name }}"
+        network_zone: "{{ variables.network_zone }}"
+        certificate_name: "test"
+      ansible.builtin.template:
+        src: "{{ values_template }}"
+        dest: IngressValues.yml
+        mode: preserve
+
+    - name: Install it.
+      kubernetes.core.helm:
+        name: ingress-nginx-controller
+        chart_ref: ingress-nginx/ingress-nginx
+        namespace: kube-system
+        state: present
+        update_repo_cache: true
+        values_files: [IngressValues.yml]

templates/HCCMValues.yml.jinja2

@@ -0,0 +1,3 @@
+networking:
+  enabled: "true"
+  clusterCIDR: "10.244.0.0/16"

templates/IngressValues.yml.jinja2

@@ -0,0 +1,17 @@
+controller:
+  dnsPolicy: ClusterFirstWithHostNet
+  hostNetwork: true
+  kind: DaemonSet
+  service:
+    annotations:
+      load-balancer.hetzner.cloud/name: {{ load_balancer_name }}
+      load-balancer.hetzner.cloud/type: "lb11"
+      load-balancer.hetzner.cloud/ipv6-disabled: "true"
+      load-balancer.hetzner.cloud/use-private-ip: "true"
+      load-balancer.hetzner.cloud/protocol: "https"
+      load-balancer.hetzner.cloud/network-zone: {{ network_zone }}
+      load-balancer.hetzner.cloud/http-certificates: {{ certificate_name }}
+      load-balancer.hetzner.cloud/http-redirect-http: "true"
+    enableHttp: false
+    targetPorts:
+      https: http

templates/InitConfiguration.yml.jinja2

@@ -0,0 +1,42 @@
+apiVersion: kubeadm.k8s.io/v1beta3
+bootstrapTokens:
+  - groups:
+      - system:bootstrappers:kubeadm:default-node-token
+    token: {{ config.bootstrap_token }}
+    ttl: 24h0m0s
+    usages:
+      - signing
+      - authentication
+kind: InitConfiguration
+localAPIEndpoint:
+  advertiseAddress: {{ config.node_ip }}
+  bindPort: 6443
+nodeRegistration:
+  criSocket: unix:///var/run/crio/crio.sock
+  imagePullPolicy: IfNotPresent
+  kubeletExtraArgs:
+    cloud-provider: external
+    node-ip: {{ config.node_ip }}
+  name: {{ config.node_name }}
+  taints: null
+---
+apiServer:
+  timeoutForControlPlane: 4m0s
+  certSANs:
+    - {{ config.node_ip }}
+apiVersion: kubeadm.k8s.io/v1beta3
+certificatesDir: /etc/kubernetes/pki
+clusterName: kubernetes
+controllerManager: {}
+dns: {}
+etcd:
+  local:
+    dataDir: /var/lib/etcd
+imageRepository: registry.k8s.io
+kind: ClusterConfiguration
+kubernetesVersion: 1.30.0
+networking:
+  dnsDomain: cluster.local
+  serviceSubnet: 10.96.0.0/12
+  podSubnet: 10.244.0.0/16
+scheduler: {}

templates/JoinConfiguration.yml.jinja2

@@ -0,0 +1,18 @@
+apiVersion: kubeadm.k8s.io/v1beta3
+caCertPath: /etc/kubernetes/pki/ca.crt
+discovery:
+  bootstrapToken:
+    apiServerEndpoint: {{ join_control_ip }}:6443
+    token: {{ join_bootstrap_token }}
+    unsafeSkipCAVerification: true
+  timeout: 5m0s
+  tlsBootstrapToken: {{ join_bootstrap_token }}
+kind: JoinConfiguration
+nodeRegistration:
+  criSocket: unix:///var/run/crio/crio.sock
+  imagePullPolicy: IfNotPresent
+  kubeletExtraArgs:
+    cloud-provider: external
+    node-ip: {{ join_worker_ip }}
+  name: {{ join_worker_name }}
+  taints: null

terraform/compute.tf

@@ -51,3 +51,18 @@ resource "hcloud_server" "server" {
 
   depends_on = [hcloud_network_subnet.subnet]
 }
+
+resource "hcloud_load_balancer" "lb" {
+  name               = "lb-hetzner"
+  load_balancer_type = "lb11"
+  network_zone       = "eu-central"
+}
+
+resource "hcloud_load_balancer_target" "load_balancer_target" {
+  for_each = hcloud_server.server
+
+  type             = "server"
+  load_balancer_id = hcloud_load_balancer.lb.id
+  use_private_ip   = true
+  server_id        = each.value.id
+}

terraform/network.tf

@@ -19,3 +19,10 @@ resource "hcloud_network_route" "gateway" {
   destination = "0.0.0.0/0"
   gateway     = local.nat-private-ip
 }
+
+// Attach the load blaancer to the private network.
+resource "hcloud_load_balancer_network" "attachment" {
+  load_balancer_id = hcloud_load_balancer.lb.id
+  subnet_id        = hcloud_network_subnet.subnet.id
+  ip               = local.lb-private-ip
+}

terraform/outputs.tf

@@ -1,3 +1,7 @@
 output "nat_public_ip" {
   value = hcloud_server.nat.ipv4_address
 }
+
+output "private_network_id" {
+  value = hcloud_network.net.id
+}

terraform/routing.tf

@@ -0,0 +1,32 @@
+data "hcloud_zone" "zone" {
+  name = local.domain
+}
+
+// Attach the load balancer to the domain.
+resource "hcloud_zone_rrset" "records" {
+  for_each = toset(["@", "*"])
+  zone     = data.hcloud_zone.zone.name
+  name     = each.value
+  type     = "A"
+  ttl      = 60
+  records  = [{ value = hcloud_load_balancer.lb.ipv4 }]
+
+  change_protection = false
+}
+
+// A managed certificate for the domain, to be used by the load balancer.
+resource "hcloud_managed_certificate" "main" {
+  name         = local.certificate_name
+  domain_names = ["*.${local.domain}", "${local.domain}"]
+}
+
+resource "hcloud_load_balancer_service" "load_balancer_service" {
+  load_balancer_id = hcloud_load_balancer.lb.id
+  protocol         = "https"
+
+  http {
+    sticky_sessions = true
+    certificates    = [hcloud_managed_certificate.main.id]
+    redirect_http   = true
+  }
+}

terraform/variables.tf

@@ -3,10 +3,16 @@ locals {
   subnet-cidr = "10.0.2.0/24"
 
   nat-private-ip = "10.0.2.8"
+  lb-private-ip  = "10.0.2.128"
   servers = {
+    control = "10.0.2.11"
     node-a  = "10.0.2.9"
     node-b  = "10.0.2.10"
   }
+
+  domain = "maximhutz.com"
+
+  certificate_name = "Main Certificate"
 }
 
 variable "public_key_file" {

vault.yml

@@ -1,30 +1,40 @@
 $ANSIBLE_VAULT;1.1;AES256
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