---
# Ansible 一键部署 nginx 矩阵（M1～M4）
# 对应文档：docs/02-05-nginx-验证矩阵-一键部署.md（02-01～02-04 分篇已整合）
#
# 说明：复制 manifests → kubectl apply → 等待 Pod 就绪 → 验证 Pod 节点分布 → curl 16 目标
# manifests：ansible/files/02-05-nginx-matrix/，M1 control-plane / M2 ylc61 / M3 worker / M4 ylc64，按实际修改 02/04 hostname
#
# 执行（在 ansible/ 目录下）：
#   ansible-playbook -i inventory.ini playbooks/nginx-matrix-deploy.yml
# 或在仓库根目录：
#   ansible-playbook -i ansible/inventory.ini ansible/playbooks/nginx-matrix-deploy.yml
- name: Deploy nginx matrix (M1~M4)
  hosts: k3s_server
  become: true
  run_once: true
  vars:
    k3s_kubeconfig: /etc/rancher/k3s/k3s.yaml
    # manifests 在 ansible/files/02-05-nginx-matrix/，与 playbook 同项目
    manifests_path: "{{ playbook_dir }}/../files/02-05-nginx-matrix"
  tasks:
    - name: Ensure manifests path exists
      ansible.builtin.stat:
        path: "{{ manifests_path }}"
      register: manifests_stat

    - name: Fail if manifests not found
      ansible.builtin.fail:
        msg: "manifests 未找到: {{ manifests_path }}，请从仓库根目录或 ansible 同级执行"
      when: not manifests_stat.stat.exists

    # 部署前确保 control-plane/worker 标签存在（M1/M3 需此才能调度），节点名为短主机名（ylc61～ylc64）
    - name: Ensure control-plane label on k3s_server nodes (for M1)
      ansible.builtin.shell: |
        KUBECONFIG={{ k3s_kubeconfig }} kubectl label node {{ item }} node-role.kubernetes.io/control-plane= --overwrite
      loop: "{{ groups['k3s_server'] | default([]) }}"

    - name: Ensure worker label on k3s_worker nodes (for M3)
      ansible.builtin.shell: |
        KUBECONFIG={{ k3s_kubeconfig }} kubectl label node {{ item }} node-role.kubernetes.io/worker= --overwrite
      loop: "{{ groups['k3s_worker'] | default([]) }}"

    - name: Copy nginx matrix manifests to server
      ansible.builtin.copy:
        src: "{{ manifests_path }}/"
        dest: /tmp/nginx-matrix/
        mode: '0644'

    # 先删全部 nginx 矩阵 Deployment 再 apply，避免旧 ReplicaSet 导致任一 Mx 仍显示默认页
    - name: Delete all nginx matrix deployments before apply
      ansible.builtin.shell: KUBECONFIG={{ k3s_kubeconfig }} kubectl delete deployment nginx-m1 nginx-m2 nginx-m3 nginx-m4 -n default --ignore-not-found=true
      register: del_nginx
      changed_when: "'deleted' in del_nginx.stdout"

    - name: kubectl apply nginx matrix
      ansible.builtin.shell: KUBECONFIG={{ k3s_kubeconfig }} kubectl apply -f /tmp/nginx-matrix/ -R
      register: k8s_apply
      changed_when: "'configured' in k8s_apply.stdout or 'created' in k8s_apply.stdout"

    - name: Restart nginx deployments so pods pick up ConfigMap (M1～M4 标识)
      ansible.builtin.shell: KUBECONFIG={{ k3s_kubeconfig }} kubectl rollout restart deployment nginx-m1 nginx-m2 nginx-m3 nginx-m4 -n default
      register: restart_out
      changed_when: true

    - name: Wait for nginx pods to be ready
      ansible.builtin.shell: |
        KUBECONFIG={{ k3s_kubeconfig }} kubectl wait --for=condition=ready pod \
          -l app=nginx-m1 --timeout=60s
        KUBECONFIG={{ k3s_kubeconfig }} kubectl wait --for=condition=ready pod \
          -l app=nginx-m2 --timeout=60s
        KUBECONFIG={{ k3s_kubeconfig }} kubectl wait --for=condition=ready pod \
          -l app=nginx-m3 --timeout=120s
        KUBECONFIG={{ k3s_kubeconfig }} kubectl wait --for=condition=ready pod \
          -l app=nginx-m4 --timeout=120s
      register: wait_result
      changed_when: false

    - name: Verify nginx matrix
      ansible.builtin.shell: KUBECONFIG={{ k3s_kubeconfig }} kubectl get pod,svc,ing,ingressroute -n default -o wide
      register: verify
      changed_when: false

    - name: ">>> nginx matrix 资源"
      ansible.builtin.debug:
        msg: "{{ item }}"
      loop: "{{ verify.stdout_lines }}"

    - name: 验证 Pod 节点分布（M1/M2 应在控制节点，M3/M4 应在工作节点）
      ansible.builtin.shell: |
        KUBECONFIG={{ k3s_kubeconfig }} kubectl get pod -n default -o custom-columns='NAME:.metadata.name,APP:.metadata.labels.app,NODE:.spec.nodeName' | grep -E '^(NAME|nginx-m)'
      register: pod_placement
      changed_when: false

    - name: ">>> Pod 节点分布"
      ansible.builtin.debug:
        msg: "{{ item }}"
      loop: "{{ pod_placement.stdout_lines }}"

    - name: M1 容器内诊断（排查为何仍为 nginx 欢迎页）
      ansible.builtin.shell: |
        echo "========== 1. M1 容器内 /usr/share/nginx/html/ 目录 =========="
        KUBECONFIG={{ k3s_kubeconfig }} kubectl exec -n default deployment/nginx-m1 -- ls -la /usr/share/nginx/html/ 2>/dev/null || echo "(exec 失败)"
        echo ""
        echo "========== 2. M1 容器内 index.html 内容（前 5 行）=========="
        KUBECONFIG={{ k3s_kubeconfig }} kubectl exec -n default deployment/nginx-m1 -- cat /usr/share/nginx/html/index.html 2>/dev/null | head -5 || echo "(exec 失败)"
        echo ""
        echo "========== 3. M1 容器内 /etc/nginx/conf.d/ 目录 =========="
        KUBECONFIG={{ k3s_kubeconfig }} kubectl exec -n default deployment/nginx-m1 -- ls -la /etc/nginx/conf.d/ 2>/dev/null || echo "(exec 失败)"
        echo ""
        echo "========== 4. M1 容器内 default.conf 内容 =========="
        KUBECONFIG={{ k3s_kubeconfig }} kubectl exec -n default deployment/nginx-m1 -- cat /etc/nginx/conf.d/default.conf 2>/dev/null || echo "(exec 失败)"
        echo ""
        echo "========== 5. M1 容器内 nginx 生效配置中的 server 块（前 40 行）=========="
        KUBECONFIG={{ k3s_kubeconfig }} kubectl exec -n default deployment/nginx-m1 -- nginx -T 2>/dev/null | grep -A 200 "server {" | head -40 || echo "(exec 失败)"
      register: m1_diag
      changed_when: false
      failed_when: false

    - name: ">>> M1 容器内诊断结果（若 M1 仍为欢迎页，请根据此处输出排查）"
      ansible.builtin.debug:
        msg: "{{ item }}"
      loop: "{{ m1_diag.stdout_lines }}"

    - name: 验证 M1～M4 标识（Pod 内 index.html 含 Mx、响应头 X-Backend）
      ansible.builtin.shell: |
        base="{{ groups['k3s_nodes'] | map('extract', hostvars) | map(attribute='ansible_host') | first }}"
        for id in 1 2 3 4; do
          echo "=== M$id Pod 内 index.html 前 2 行 ==="
          KUBECONFIG={{ k3s_kubeconfig }} kubectl exec -n default deployment/nginx-m$id -- cat /usr/share/nginx/html/index.html 2>/dev/null | head -2 || echo "(exec 失败)"
          echo "=== M$id 响应头 X-Backend ==="
          curl -sI "http://$base/demo-m$id/" 2>/dev/null | grep -i x-backend || echo "(未看到 X-Backend)"
          echo ""
        done
      register: m_check
      changed_when: false
      failed_when: false

    - name: ">>> M1～M4 验证"
      ansible.builtin.debug:
        msg: "{{ item }}"
      loop: "{{ m_check.stdout_lines }}"

    - name: curl 验证（16 个目标：4 节点 × 4 路径）
      ansible.builtin.shell: |
        bases="{{ groups['k3s_nodes'] | map('extract', hostvars) | map(attribute='ansible_host') | join(' ') }}"
        paths="/demo-m1 /demo-m2 /demo-m3 /demo-m4"
        count=0
        ok=0
        echo "=== 16 个目标 (4 节点 × 4 路径) ==="
        echo "节点         M1(控制+Ingress)  M2(控制+IR)  M3(工作+Ingress)  M4(工作+IR)"
        for base in $bases; do
          m1=$(curl -s -o /dev/null -w "%{http_code}" --connect-timeout 2 http://$base/demo-m1 2>/dev/null) || m1="fail"
          m2=$(curl -s -o /dev/null -w "%{http_code}" --connect-timeout 2 http://$base/demo-m2 2>/dev/null) || m2="fail"
          m3=$(curl -s -o /dev/null -w "%{http_code}" --connect-timeout 2 http://$base/demo-m3 2>/dev/null) || m3="fail"
          m4=$(curl -s -o /dev/null -w "%{http_code}" --connect-timeout 2 http://$base/demo-m4 2>/dev/null) || m4="fail"
          printf "%-12s %-16s %-11s %-16s %s\n" "$base" "$m1" "$m2" "$m3" "$m4"
          for c in $m1 $m2 $m3 $m4; do count=$((count+1)); [ "$c" = "200" ] && ok=$((ok+1)); done
        done
        echo "---"
        echo "共验证 $count 个目标，$ok 个返回 200"
      register: curl_result
      changed_when: false

    - name: ">>> curl 矩阵"
      ansible.builtin.debug:
        msg: "{{ item }}"
      loop: "{{ curl_result.stdout_lines }}"