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RHEL7 上的 HAProxy 故障排除

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RHEL7 上的 HAProxy 故障排除

我使用的是 RHEL7 系统。我是 haproxy 的新手。我想我有某种问题。这是我想使用的地址。

[root@haproxy-el7-001 haproxy]# grep 1936 /etc/haproxy/haproxy.cfg 
  bind 10.29.103.39:1936

这是我的 haproxy.cfg 的样子......

listen haproxy_stats
  bind 10.29.103.39:1936  
  mode  http   
  stats  enable
  stats  hide-version
  stats  realm Haproxy\ Statistics
  stats  uri / 
  stats  auth xxxxx:xxxxx

我没有其他需要负载平衡的服务，但我仍然希望能够像这样查看统计数据......

[root@haproxy-el7-001 haproxy]# wget http://10.29.103.39:1936
--2015-02-17 19:11:33--  http://10.29.103.39:1936/
Connecting to 10.29.103.39:1936... failed: No route to host.

服务 haproxy 正在运行：

[root@haproxy-el7-001 ~]# systemctl -l status haproxy
haproxy.service - HAProxy Load Balancer
   Loaded: loaded (/usr/lib/systemd/system/haproxy.service; enabled)
   Active: active (running) since Tue 2015-02-17 18:47:57 EST; 16s ago
 Main PID: 16448 (haproxy-systemd)
   CGroup: /system.slice/haproxy.service
           ├─16448 /usr/sbin/haproxy-systemd-wrapper -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid
           ├─16449 /usr/sbin/haproxy -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid -Ds
           ├─16450 /usr/sbin/haproxy -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid -Ds
           └─16451 /usr/sbin/haproxy -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid -Ds

Feb 17 18:48:10 haproxy-el7-001 haproxy[16451]: Server heat_api_cluster/mgmt-el7-001 is DOWN, reason: Layer4 timeout, check duration: 10001ms. 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue.
Feb 17 18:48:10 haproxy-el7-001 haproxy[16451]: backend heat_api_cluster has no server available!
Feb 17 18:48:10 haproxy-el7-001 haproxy[16450]: Server heat_api_cluster/mgmt-el7-001 is DOWN, reason: Layer4 timeout, check duration: 10001ms. 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue.
Feb 17 18:48:10 haproxy-el7-001 haproxy[16450]: backend heat_api_cluster has no server available!
Feb 17 18:48:12 haproxy-el7-001 haproxy[16450]: Server keystone-admin-api/mgmt-el7-001 is DOWN, reason: Layer4 timeout, check duration: 10000ms. 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue.
Feb 17 18:48:12 haproxy-el7-001 haproxy[16450]: backend keystone-admin-api has no server available!
Feb 17 18:48:12 haproxy-el7-001 haproxy[16451]: Server keystone-admin-api/mgmt-el7-001 is DOWN, reason: Layer4 timeout, check duration: 10001ms. 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue.
Feb 17 18:48:12 haproxy-el7-001 haproxy[16451]: backend keystone-admin-api has no server available!
Feb 17 18:48:13 haproxy-el7-001 haproxy[16451]: Server keystone-public-api/mgmt-el7-001 is DOWN, reason: Layer4 timeout, check duration: 10001ms. 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue.
Feb 17 18:48:13 haproxy-el7-001 haproxy[16451]: backend keystone-public-api has no server available!

这是输出ip a，但我没有看到列出的 VIP 10.29.103.39。

[root@haproxy-el7-001 haproxy]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: ens160: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
    link/ether 00:50:56:a4:77:2b brd ff:ff:ff:ff:ff:ff
    inet 10.29.103.37/26 brd 10.29.103.63 scope global ens160
       valid_lft forever preferred_lft forever
    inet6 fe80::250:56ff:fea4:772b/64 scope link 
       valid_lft forever preferred_lft forever

我在这里做错了什么？

答案1

我正在使用内部 Puppet 模块，该模块使用 Puppetlabs HAProxy 模块。傀儡代码确实看起来像这样......

  keepalived::instance { 'haproxy-vip':
    advert_int        => '1',
    priority          => "$priority",
    state             => "$state",
    virtual_router_id => "$vrouter_id",
    interface         => 'eth0',
    virtual_ips       => [ $controller_vip, $swift_vip ],
    track_script      => [ 'check_haproxy' ],
  }

...并且此代码未在 RHEL7 上进行测试。 RHEL7 接口名称可能略有不同。在我的 RHEL7 系统上，主网卡称为“ens160”。我更改了傀儡代码以使用事实“接口”，就像这样......

  $allnics = split( $interfaces, "," )
  $interface = $allnics[0]

  keepalived::instance { 'haproxy-vip':
    advert_int        => '1',
    priority          => "$priority",
    state             => "$state",
    virtual_router_id => "$vrouter_id",
    interface         => "$interface",
    virtual_ips       => [ $controller_vip, $swift_vip ],
    track_script      => [ 'check_haproxy' ],
  }

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