<div id="readability-page-1" class="page"><article id="post-6203">
				

							<div>
												
<p>Job 을 테스트하고,<br>
Load Balancing 의 health check point 를 제공하기 위해,<br>
hello_world job 을 생성합니다.</p>
<pre><code>vi hello_world.nomad
-----------------------------
job "hello_world" {
  datacenters = ["dc1"]

  group "hello_world" {
    count = 1

    network {
      port "http" { to = 80 }
    }

    task "hello_world" {
      driver = "docker"

      config {
        image = "nginxdemos/hello"
        ports = ["http"]

        auth_soft_fail = true
      }

      resources {
        cpu    = 500
        memory = 128
      }

      service {
        name = "hello-world"
        port = "http"

        check {
          type     = "http"
          path     = "/health"
          interval = "10s"
          timeout  = "2s"
        }
      }
    }
  }
}
-----------------------------</code></pre>
<h2>haproxy 연동</h2>
<ul>
<li>
<p>고정 포트 할당 :</p>
<p><code>port "hello_world" { static = 2390 }</code></p>
</li>
<li>
<p>frontend 설정 :</p>
<p><code>NOMAD_PORT_포트명</code></p>
</li>
<li>
<p>backend 설정 :</p>
<p><code>_hello-world._tcp.service.consul</code> 에서 <code>hello-world</code> 가 job 서비스명<br>
<code>service { name = "hello-world" }</code></p>
</li>
</ul>
<pre><code>job "haproxy" {
  datacenters = ["dc1"]
  type = "system"         # 모든 노드에 자동설치

  group "haproxy" {
    count = 1

    network {
      port "haproxy_ui" {
        static = 4936
      }

      port "prometheus_ui" {
        static = 9090
      }

      port "hello_world" {
        static = 2390
      }

      port "haproxy_exporter" {}
    }

    task "haproxy" {
      driver = "docker"

      config {
        image = "haproxy:2.4.4"
        ports = ["haproxy_ui"]

        auth_soft_fail = true

        # host 로 설정했으므로 127.0.0.1 는 호스트를 가르킨다.
        network_mode = "host"

        volumes = [
          "local/haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg",
          "/ssl/:/ssl/",
        ]
      }

      template {
        data = &lt;&lt;EOF
global
   maxconn 8192
defaults
   mode http
   timeout client 10s
   timeout connect 5s
   timeout server 10s
   timeout http-request 10s
   option forwardfor

frontend stats
   bind *:{{ env "NOMAD_PORT_haproxy_ui" }}
   stats uri /
   stats show-legends
   no log

frontend prometheus_ui_front
   bind *:{{ env "NOMAD_PORT_prometheus_ui" }}
   default_backend prometheus_ui_back

backend prometheus_ui_back
   balance roundrobin
   server-template prometheus_ui 5 _prometheus._tcp.service.consul resolvers consul resolve-opts allow-dup-ip resolve-prefer ipv4 check

frontend hello_world_front
   bind *:{{ env "NOMAD_PORT_hello_world" }}
   default_backend hello_world_back

backend hello_world_back
   balance roundrobin
   server-template hello_world 5 _hello-world._tcp.service.consul resolvers consul resolve-opts allow-dup-ip resolve-prefer ipv4 check

resolvers consul
   nameserver consul 127.0.0.1:8600
   accepted_payload_size 8192
   hold valid 5s
EOF

        destination   = "local/haproxy.cfg"
        change_mode   = "signal"
        change_signal = "SIGUSR1"
      }

      resources {
        cpu    = 500
        memory = 128
      }

      service {
        name = "haproxy-ui"
        port = "haproxy_ui"

        check {
          type     = "http"
          path     = "/"
          interval = "10s"
          timeout  = "2s"
        }
      }
    }

    task "haproxy-exporter" {
      driver = "docker"

      lifecycle {
        hook    = "prestart"
        sidecar = true
      }

      config {
        image = "prom/haproxy-exporter:v0.10.0"
        ports = ["haproxy_exporter"]

        network_mode = "host"
        auth_soft_fail = true

        args = [
          "--web.listen-address",
          ":${NOMAD_PORT_haproxy_exporter}",
          "--haproxy.scrape-uri",
          "http://${NOMAD_ADDR_haproxy_ui}/?stats;csv",
        ]
      }

      resources {
        cpu    = 100
        memory = 32
      }

      service {
        name = "haproxy-exporter"
        port = "haproxy_exporter"

        check {
          type     = "http"
          path     = "/metrics"
          interval = "10s"
          timeout  = "2s"
        }
      }
    }
  }
}</code></pre>
<p>http://&lt;노마드 클라이언트 아이피&gt;:2390/ 에 접속하면,<br>
hello_world 가 실행되고 있는 것을 볼 수 있습니다.</p>
<p><span></span>
				<span>Post Views:</span>
				<span>5</span>
			</p>											</div>
		
	
	</article></div>

상구리의 기술 블로그

Hello World
Job 을 테스트하고,
vi hello_world.nomad
-----------------------------
job "hello_world" {
  datacenters = ["dc1"]
  group "hello_world" {
    count = 1
    network {
      port "http" { to = 80 }
    }
    task "hello_world" {
      driver = "docker"
      config {
        image = "nginxdemos/hello"
        ports = ["http"]
        auth_soft_fail = true
      }
      resources {
        cpu    = 500
        memory = 128
      }
      service {
        name = "hello-world"
        port = "http"
        check {
          type     = "http"
          path     = "/health"
          interval = "10s"
          timeout  = "2s"
        }
      }
    }
  }
}
-----------------------------
haproxy 연동
고정 포트 할당 :
port "hello_world" { static = 2390 }
frontend 설정 :
NOMAD_PORT_포트명
backend 설정 :
_hello-world._tcp.service.consul 에서 hello-world 가 job 서비스명
service { name = "hello-world" }
job "haproxy" {
  datacenters = ["dc1"]
  type = "system"         # 모든 노드에 자동설치
  group "haproxy" {
    count = 1
    network {
      port "haproxy_ui" {
        static = 4936
      }
      port "prometheus_ui" {
        static = 9090
      }
      port "hello_world" {
        static = 2390
      }
      port "haproxy_exporter" {}
    }
    task "haproxy" {
      driver = "docker"
      config {
        image = "haproxy:2.4.4"
        ports = ["haproxy_ui"]
        auth_soft_fail = true
        # host 로 설정했으므로 127.0.0.1 는 호스트를 가르킨다.
        network_mode = "host"
        volumes = [
          "local/haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg",
          "/ssl/:/ssl/",
        ]
      }
      template {
        data = <<EOF
global
   maxconn 8192
defaults
   mode http
   timeout client 10s
   timeout connect 5s
   timeout server 10s
   timeout http-request 10s
   option forwardfor
frontend stats
   bind *:{{ env "NOMAD_PORT_haproxy_ui" }}
   stats uri /
   stats show-legends
   no log
frontend prometheus_ui_front
   bind *:{{ env "NOMAD_PORT_prometheus_ui" }}
   default_backend prometheus_ui_back
backend prometheus_ui_back
   balance roundrobin
   server-template prometheus_ui 5 _prometheus._tcp.service.consul resolvers consul resolve-opts allow-dup-ip resolve-prefer ipv4 check
frontend hello_world_front
   bind *:{{ env "NOMAD_PORT_hello_world" }}
   default_backend hello_world_back
backend hello_world_back
   balance roundrobin
   server-template hello_world 5 _hello-world._tcp.service.consul resolvers consul resolve-opts allow-dup-ip resolve-prefer ipv4 check
resolvers consul
   nameserver consul 127.0.0.1:8600
   accepted_payload_size 8192
   hold valid 5s
EOF
        destination   = "local/haproxy.cfg"
        change_mode   = "signal"
        change_signal = "SIGUSR1"
      }
      resources {
        cpu    = 500
        memory = 128
      }
      service {
        name = "haproxy-ui"
        port = "haproxy_ui"
        check {
          type     = "http"
          path     = "/"
          interval = "10s"
          timeout  = "2s"
        }
      }
    }
    task "haproxy-exporter" {
      driver = "docker"
      lifecycle {
        hook    = "prestart"
        sidecar = true
      }
      config {
        image = "prom/haproxy-exporter:v0.10.0"
        ports = ["haproxy_exporter"]
        network_mode = "host"
        auth_soft_fail = true
        args = [
          "--web.listen-address",
          ":${NOMAD_PORT_haproxy_exporter}",
          "--haproxy.scrape-uri",
          "http://${NOMAD_ADDR_haproxy_ui}/?stats;csv",
        ]
      }
      resources {
        cpu    = 100
        memory = 32
      }
      service {
        name = "haproxy-exporter"
        port = "haproxy_exporter"
        check {
          type     = "http"
          path     = "/metrics"
          interval = "10s"
          timeout  = "2s"
        }
      }
    }
  }
}
http://<노마드 클라이언트 아이피>:2390/ 에 접속하면,
hello_world 가 실행되고 있는 것을 볼 수 있습니다.

Hello World

댓글