feat: add some templating for nomad haproxy job

roles/hashistack_ingress/.docsible

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+aap_hub: null
+automation_kind: null
+category: null
+critical: null
+description: null
+dt_dev: null
+dt_prod: null
+dt_update: 26/08/2024
+requester: null
+subCategory: null
+time_saving: null
+users: null
+version: null

roles/hashistack_ingress/README.md

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+<!-- DOCSIBLE START -->
+
+# 📃 Role overview
+
+## hashistack_ingress
+
+
+
+Description: Deploys an ingress reverse-proxy on a hashistack-ansible managed nomad cluster
+
+
+| Field         | Value      |
+|---------------|------------|
+| Readme update | 26/08/2024 |
+
+
+
+
+
+
+
+
+
+
+
+
+### Tasks
+
+
+
+
+
+
+
+
+## Author Information
+Bertrand Lanson
+
+#### License
+
+license (BSD, MIT)
+
+#### Minimum Ansible Version
+
+2.10
+
+#### Platforms
+
+- **Ubuntu**: ['focal', 'jammy', 'noble']
+- **Debian**: ['bullseye', 'bookworm']
+
+<!-- DOCSIBLE END -->

roles/hashistack_ingress/defaults/main.yml

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+---
+# defaults file for hashistack_ingress
+hashistack_ingress_nomad_api_addr: "http://127.0.0.1:4646"
+hashistack_ingress_nomad_api_token:
+
+hashistack_ingress_job_name: HashistackHAProxyIngress
+hashistack_ingress_datacenters: []
+hashistack_ingress_namespace: default
+hashistack_ingress_replicas: 1
+hashistack_ingress_enable_consul_service: true
+
+hashistack_ingress_virtual_ip_keepalived_version: latest
+hashistack_ingress_virtual_ip_addr: "192.168.1.1"
+hashistack_ingress_virtual_ip_interface: eth0
+hashistack_ingress_virtual_ip_vrrp_interface: "{{ hashistack_ingress_virtual_ip_interface }}"
+hashistack_ingress_virtual_ip_vrrp_router_id: 50
+hashistack_ingress_virtual_ip_vrrp_priority: 100
+hashistack_ingress_virtual_ip_vrrp_advertise_interval: 1
+hashistack_ingress_virtual_ip_vrrp_password: password
+
+hashistack_ingress_enable_http: true
+hashistack_ingress_enable_https: false
+hashistack_ingress_enable_prometheus_metrics: false
+hashistack_ingress_enable_admin_interface: false
+hashistack_ingress_admin_interface_password: password
+
+hashistack_ingress_virtual_ip_haproxy_version: latest
+hashistack_ingress_haproxy_global:
+  - log /dev/log local0
+  - log /dev/log local1 notice
+  - stats socket {{ deploy_haproxy_socket }} level admin
+  - chroot {{ deploy_haproxy_chroot }}
+  - daemon
+  - description hashistack haproxy
+hashistack_ingress_haproxy_defaults:
+  - log global
+  - mode http
+  - option httplog
+  - option dontlognull
+  - timeout connect 5000
+  - timeout client  5000
+  - timeout server  5000
+hashistack_ingress_haproxy_frontends: []
+hashistack_ingress_haproxy_backends: []
+hashistack_ingress_haproxy_listen: []

roles/hashistack_ingress/handlers/main.yml

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+---
+# handlers file for hashistack_ingress

roles/hashistack_ingress/meta/main.yml

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+---
+# meta file for hashistack_ingress
+galaxy_info:
+  namespace: "ednz_cloud"
+  role_name: "hashistack_ingress"
+  author: "Bertrand Lanson"
+  description: "Deploys an ingress reverse-proxy on a hashistack-ansible managed nomad cluster"
+  license: "license (BSD, MIT)"
+  min_ansible_version: "2.10"
+  platforms:
+    - name: Ubuntu
+      versions:
+        - focal
+        - jammy
+        - noble
+    - name: Debian
+      versions:
+        - bullseye
+        - bookworm
+  galaxy_tags:
+    - "ubuntu"
+    - "debian"
+    - "hashicorp"
+    - "nomad"
+    - "haproxy"
+    - "ingress"
+
+dependencies: []

roles/hashistack_ingress/tasks/main.yml

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+---
+# task/main file for hashistack_ingress

roles/hashistack_ingress/templates/chk_haproxy.sh.j2

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+#! /bin/sh

roles/hashistack_ingress/templates/haproxy.cfg.j2

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+# {{ ansible_managed }}
+global
+{% for option in hashistack_ingress_haproxy_global %}
+  {{ option }}
+{% endfor %}
+
+defaults
+{% for option in hashistack_ingress_haproxy_defaults %}
+  {{ option }}
+{% endfor %}
+
+{% for frontend in hashistack_ingress_haproxy_frontends + hashistack_ingress_mandatory_frontends %}
+frontend {{ frontend.name }}
+{% for option in frontend.options %}
+  {{ option }}
+{% endfor %}
+{% endfor %}
+
+{% for backend in hashistack_ingress_haproxy_backends %}
+backend {{ backend.name }}
+{% for option in backend.options%}
+  {{ option }}
+{% endfor %}
+{% endfor %}
+
+{% for listen in hashistack_ingress_haproxy_listen %}
+listen {{ listen.name }}
+{% for option in listen.options %}
+  {{ option }}
+{% endfor %}
+{% endfor %}

roles/hashistack_ingress/templates/ingress.job.hcl.j2

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+job "{{ hashistack_ingress_job_name }}" {
+  datacenters = {{ hashistack_ingress_datacenters }}
+  type        = "service"
+  priority    = 85
+  namespace   = {{ hashistack_ingress_namespace }}
+
+  group "haproxy" {
+    network {
+      mode = "bridge"
+      port "http" {
+        to     = 80
+        static = 80
+      }
+      port "https" {
+        to     = 443
+        static = 443
+      }
+      port "stats" {
+        to     = 9000
+      }
+    }
+
+{% if hashistack_ingress_enable_http %}
+    service {
+      name = "haproxy-http"
+      provider = "{{ "consul" if hashistack_ingress_enable_consul_service else "nomad"}}"
+      port = "http"
+      task = "loadbalancer"
+      check {
+        type     = "http"
+        port     = "stats"
+        path     = "/health"
+        interval = "10s"
+        timeout  = "2s"
+      }
+      tags = []
+    }
+{% endif %}
+
+{% if hashistack_ingress_enable_https %}
+    service {
+      name = "haproxy-https"
+      provider = "{{ "consul" if hashistack_ingress_enable_consul_service else "nomad"}}"
+      port = "https"
+      task = "loadbalancer"
+      check {
+        type     = "http"
+        port     = "stats"
+        path     = "/health"
+        interval = "10s"
+        timeout  = "2s"
+      }
+      tags = []
+    }
+{% endif %}
+
+    service {
+      name = "haproxy-stats"
+      provider = "{{ "consul" if hashistack_ingress_enable_consul_service else "nomad"}}"
+      port = "stats"
+      task = "loadbalancer"
+      check {
+        type     = "http"
+        port     = "stats"
+        path     = "/health"
+        interval = "10s"
+        timeout  = "2s"
+      }
+      tags = []
+    }
+
+
+
+{% if hashistack_ingress_enable_prometheus_metrics %}
+    service {
+      name = "loadbalancer-exporter"
+      port = "prometheus-exporter"
+      task = "loadbalancer"
+      tags = []
+    }
+{% endif %}
+
+    task "keepalived" {
+      driver = "docker"
+      lifecycle {
+        hook    = "poststart"
+        sidecar = true
+      }
+      config {
+        image        = "{{ hashistack_ingress_keepalived_image }}:{{ hashistack_ingress_virtual_ip_keepalived_version }}"
+        network_mode = "host"
+        cap_add = [
+          "NET_ADMIN",
+          "NET_BROADCAST",
+          "NET_RAW"
+        ]
+        mount {
+          type   = "bind"
+          source = "secrets/keepalived.conf"
+          target = "/etc/keepalived/keepalived.conf"
+        }
+        mount {
+          type   = "bind"
+          source = "secrets/chk_haproxy.sh"
+          target = "/etc/keepalived/scripts.d/chk_haproxy.sh"
+        }
+        mount {
+          type   = "bind"
+          target = "/var/run/docker.sock"
+          source = "/var/run/docker.sock"
+          readonly = true
+        }
+      }
+      template {
+        data        = <<-EOT
+{% include "keepalived.conf.j2" %}
+EOT
+        destination = "secrets/keepalived.conf"
+      }
+      template {
+        data        = <<-EOT
+{% include "chk_haproxy.sh.j2" %}
+EOT
+        destination = "secrets/chk_haproxy.sh"
+        perms = "755"
+      }
+      resources {
+        cpu    = 50
+        memory = 10
+      }
+    }
+
+    task "loadbalancer" {
+      driver = "docker"
+      config {
+        image = "{{ hashistack_ingress_haproxy_image }}:{{ hashistack_ingress_virtual_ip_haproxy_version }}"
+        mount {
+          type   = "bind"
+          source = "secrets/haproxy.cfg"
+          target = "/usr/local/etc/haproxy/haproxy.cfg"
+        }
+      }
+      template {
+        data        = <<-EOT
+{% include "haproxy.cfg.j2" %}
+EOT
+        destination = "secrets/haproxy.cfg"
+      }
+      resources {
+        cpu    = 128
+        memory = 256
+      }
+    }
+  }
+}

roles/hashistack_ingress/templates/keepalived.conf.j2

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+global_defs {
+  script_user root
+  enable_script_security
+}
+
+vrrp_script chk_haproxy {
+  script "/etc/keepalived/scripts.d/chk_haproxy.sh"
+  user root
+  interval 3
+  weight 0
+  rise 6
+  fall 1
+}
+
+vrrp_instance haproxy {
+  interface {{ hashistack_ingress_virtual_ip_vrrp_interface }}
+
+  state {{ hashistack_ingress_keepalived_init_state }}
+  virtual_router_id {{ hashistack_ingress_virtual_ip_vrrp_router_id }}
+  priority {{ hashistack_ingress_virtual_ip_vrrp_priority }}
+  advert_int {{ hashistack_ingress_virtual_ip_vrrp_advertise_interval }}
+
+  authentication {
+    auth_type PASS
+    auth_pass {{ hashistack_ingress_virtual_ip_vrrp_password }}
+  }
+
+  virtual_ipaddress {
+    {{ hashistack_ingress_virtual_ip_addr }}/32 dev {{ hashistack_ingress_virtual_ip_interface }}
+  }
+
+  track_script {
+    chk_haproxy
+  }
+
+  notify /etc/keepalived/scripts.d/notify.sh
+}

roles/hashistack_ingress/vars/main.yml

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+---
+# vars file for hashistack_ingress
+hashistack_ingress_keepalived_image: ednxzu/keepalived
+hashistack_ingress_haproxy_image: haproxytech/haproxy-debian
+
+hashistack_ingress_keepalived_init_state: BACKUP
+
+hashistack_ingress_template_haproxy_cfg: "{{ lookup('ansible.builtin.template', 'haproxy.cfg.j2') }}"
+hashistack_ingress_template_keepalived_conf: "{{ lookup('ansible.builtin.template', 'keepalived.conf.j2') }}"
+hashistack_ingress_template_chk_haproxy_sh: "{{ lookup('ansible.builtin.template', 'chk_haproxy.sh.j2') }}"
+
+hashistack_ingress_mandatory_frontends:
+  - name: monitoring
+    options:
+      - bind :9000
+      - mode http
+      - option httpchk
+      - "{{'stats enable' if hashistack_ingress_enable_admin_interface else omit }}"
+      - "{{'stats uri /stats' if hashistack_ingress_enable_admin_interface else omit }}"
+      - "{{'stats refresh 30s' if hashistack_ingress_enable_admin_interface else omit }}"
+      - "{{'stats show-desc' if hashistack_ingress_enable_admin_interface else omit }}"
+      - "{{'stats show-legends' if hashistack_ingress_enable_admin_interface else omit }}"
+      - "{{'stats auth admin:'~hashistack_ingress_admin_interface_password if hashistack_ingress_enable_admin_interface else omit }}"
+      - http-check send meth GET uri /health ver HTTP/1.1 hdr Host localhost
+      - http-check expect status 200
+      - acl health_check_ok nbsrv() ge 1
+      - monitor-uri /health
+      - "{{'http-request use-service prometheus-exporter if { path /metrics }' if hashistack_ingress_enable_prometheus_metrics else omit }}"