feat: add blackbox monitoring and app3 deployment

- Add blackbox exporter role and playbooks
- Add cadvisor, docker, httpbin roles
- Add app3 deployment playbooks
- Configure blackbox monitoring

roles/blackbox_exporter/defaults/main.yml

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+---
+# Blackbox Exporter configuration
+blackbox_version: "latest"
+blackbox_port: 8083
+blackbox_image: "prom/blackbox-exporter:{{ blackbox_version }}"
+blackbox_container_name: "blackbox-exporter"
+
+# Все цели для мониторинга из ИП и твоего списка
+blackbox_targets:
+  # Основные сервисы стенда (из ИП)
+  - name: "app1-nginx"
+    url: "http://192.168.0.110/"
+    module: "http_2xx"
+    
+  - name: "app2-postgresql"
+    url: "http://192.168.0.111:9187/metrics"  # postgres_exporter
+    module: "http_2xx"
+    
+  - name: "app3-httpbin"
+    url: "http://192.168.0.112:8080/get"
+    module: "http_2xx"
+    
+  - name: "app3-cadvisor"
+    url: "http://192.168.0.112:8081/metrics"
+    module: "http_2xx"
+    
+  - name: "git-forgejo"
+    url: "http://192.168.0.100:3000/"
+    module: "http_2xx"
+    
+  - name: "ansible"
+    url: "http://192.168.0.101:9100/metrics"  # node_exporter
+    module: "http_2xx"
+    
+  - name: "vault"
+    url: "http://192.168.0.103:8200/ui/"
+    module: "http_2xx"
+    
+  - name: "victoriametrics"
+    url: "http://192.168.0.104:8428/metrics"
+    module: "http_2xx"
+    
+  - name: "prometheus"
+    url: "http://192.168.0.105:9090/metrics"
+    module: "http_2xx"
+    
+  - name: "grafana"
+    url: "http://192.168.0.106:3000"
+    module: "http_2xx"
+
+  # Домены из твоего списка
+  - name: "wiki-pvenode"
+    url: "http://wiki.pvenode.ru/"
+    module: "http_2xx"
+    
+  - name: "victoria-pvenode"
+    url: "http://victoria.pvenode.ru/"
+    module: "http_2xx"
+    
+  - name: "vault-pvenode"
+    url: "http://vault.pvenode.ru/"
+    module: "http_2xx"
+    
+  - name: "tasks-pvenode"
+    url: "http://tasks.pvenode.ru/"
+    module: "http_2xx"
+    
+  - name: "python-pvenode"
+    url: "http://python.pvenode.ru/"
+    module: "http_2xx"
+    
+  - name: "pvenode-main"
+    url: "http://pvenode.ru/"
+    module: "http_2xx"
+    
+  - name: "proxmox-pvenode"
+    url: "http://proxmox.pvenode.ru/"
+    module: "http_2xx"
+    
+  - name: "prometheus-pvenode"
+    url: "http://prometheus.pvenode.ru/"
+    module: "http_2xx"
+    
+  - name: "postgre-pvenode"
+    url: "http://postgre.pvenode.ru/"
+    module: "http_2xx"
+    
+  - name: "ovpn-pvenode"
+    url: "http://ovpn.pvenode.ru/"
+    module: "http_2xx"
+    
+  - name: "nginxpm-pvenode"
+    url: "http://nginxpm.pvenode.ru/"
+    module: "http_2xx"
+    
+  - name: "nextcloud-pvenode"
+    url: "http://nextcloud.pvenode.ru/"
+    module: "http_2xx"
+    
+  - name: "money-pvenode"
+    url: "http://money.pvenode.ru/"
+    module: "http_2xx"
+    
+  - name: "grafana-pvenode"
+    url: "http://grafana.pvenode.ru/"
+    module: "http_2xx"
+    
+  - name: "gitlab-pvenode"
+    url: "http://gitlab.pvenode.ru/"
+    module: "http_2xx"
+    
+  - name: "forgejo-pvenode"
+    url: "http://forgejo.pvenode.ru/"
+    module: "http_2xx"
+    
+  - name: "bitwarden-pvenode"
+    url: "http://bitwarden.pvenode.ru/"
+    module: "http_2xx"
+    
+  - name: "app1-pvenode"
+    url: "http://app1.pvenode.ru/"
+    module: "http_2xx"
+    
+  - name: "ansible-pvenode"
+    url: "http://ansimble.pvenode.ru/"
+    module: "http_2xx"

roles/blackbox_exporter/files/blackbox.yml

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+modules:
+  # HTTP проверка (2xx статус)
+  http_2xx:
+    prober: http
+    timeout: 10s
+    http:
+      valid_status_codes: [200, 301, 302, 403]
+      method: GET
+      preferred_ip_protocol: "ip4"
+      follow_redirects: true
+      fail_if_ssl: false
+      fail_if_not_ssl: false
+      tls_config:
+        insecure_skip_verify: true  # для тестового стенда
+      
+  # HTTP POST проверка
+  http_post_2xx:
+    prober: http
+    http:
+      method: POST
+      preferred_ip_protocol: "ip4"
+      
+  # TCP подключение
+  tcp_connect:
+    prober: tcp
+    timeout: 5s
+    
+  # SSL проверки (можно добавить позже)
+  ssl_check:
+    prober: http
+    http:
+      fail_if_not_ssl: true
+      tls_config:
+        insecure_skip_verify: false
+      preferred_ip_protocol: "ip4"
+      
+  # ICMP (ping)
+  icmp_check:
+    prober: icmp
+    timeout: 5s
+    icmp:
+      preferred_ip_protocol: "ip4"

roles/blackbox_exporter/tasks/main.yml

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+---
+- name: Create directory for blackbox config
+  file:
+    path: /etc/blackbox_exporter
+    state: directory
+    mode: '0755'
+  tags: blackbox
+
+- name: Copy blackbox configuration
+  copy:
+    src: files/blackbox.yml
+    dest: /etc/blackbox_exporter/config.yml
+    mode: '0644'
+  tags: blackbox
+
+- name: Ensure blackbox-exporter container is running
+  community.docker.docker_container:
+    name: "{{ blackbox_container_name }}"
+    image: "{{ blackbox_image }}"
+    state: started
+    restart_policy: unless-stopped
+    ports:
+      - "{{ blackbox_port }}:9115"
+    volumes:
+      - "/etc/blackbox_exporter/config.yml:/etc/blackbox_exporter/config.yml"
+    command:
+      - "--config.file=/etc/blackbox_exporter/config.yml"
+      - "--web.listen-address=:9115"
+  tags: blackbox
+
+- name: Configure UFW for blackbox-exporter
+  ufw:
+    rule: allow
+    port: "{{ blackbox_port }}"
+    proto: tcp
+    comment: "Blackbox Exporter"
+  tags: blackbox
+
+- name: Wait for blackbox-exporter to be ready
+  wait_for:
+    port: "{{ blackbox_port }}"
+    host: "{{ ansible_host }}"
+    delay: 2
+    timeout: 60
+  tags: blackbox
+
+- name: Test blackbox-exporter with local target
+  uri:
+    url: "http://{{ ansible_host }}:{{ blackbox_port }}/probe?target=http://192.168.0.112:8080/get&module=http_2xx"
+    return_content: true
+    status_code: 200
+  register: blackbox_test
+  tags: blackbox
+
+- name: Show blackbox-exporter status
+  debug:
+    msg: "Blackbox Exporter deployed at http://{{ ansible_host }}:{{ blackbox_port }}/"
+  tags: blackbox