automatically discover the use of multiple IPs

[marksugar]

Outside of docker, I have a load-balancing cluster that is running “Haproxy” and “keepalived” on the physical node.
There are two ip addresses on eth0

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    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
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether fa:16:3e:64:7e:55 brd ff:ff:ff:ff:ff:ff
    inet 172.25.10.30/16 brd 172.25.255.255 scope global dynamic eth0
       valid_lft 77196sec preferred_lft 77196sec
    inet 172.25.254.1/16 scope global secondary eth0
       valid_lft forever preferred_lft forever
3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default 
    link/ether 02:42:78:24:70:d7 brd ff:ff:ff:ff:ff:ff
    inet 172.31.0.1/16 brd 172.31.255.255 scope global docker0
       valid_lft forever preferred_lft forever

relabel_configs：

  - job_name: 'node_exporter'
    metrics_path: /metrics
    scheme: http
    consul_sd_configs:
      - server: 127.0.0.1:8500
        services: ['node-exporter']
    relabel_configs:
        - source_labels: ['__meta_consul_service']
          regex:         '(.*)'
          target_label:  'job'
          replacement:   '$1'
        - source_labels: ['__meta_consul_service_address']
          regex:         '(.*)'
          target_label:  'instance'
          replacement:   '$1'
        - source_labels: ['__meta_consul_service_address', '__meta_consul_service_port']
          regex:         '(.*);(.*)'
          target_label:  '__address__'
          replacement:   '$1:$2'

the instance on prometheus shows two ip addresses, causing the "State" to be "down".

like this ： instance="172.25.10.28 172.25.254.1:18880"

when I modify the regex field still shows two ip

        - source_labels: ['__meta_consul_service_address']
          regex:         '^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$'
          target_label:  'instance'
          replacement:   '$1'
        - source_labels: ['__meta_consul_service_address', '__meta_consul_service_port']
          regex:         '^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$;(.*)'

[simonpasquier]

Thanks for your report. It looks as if this is actually a question about usage and not development.

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