title: PostgreSQL - Fail to start delegate ip address on pgpool 2
body: <p>I try to set up a pgpool server on ubuntu server and following this link : <a href="http://www.pgpool.net/pgpool-web/contrib_docs/watchdog/en.html" rel="nofollow noreferrer">pgpool-II Tutorial [ Watchdog ]</a>.</p>
  
  <p>But when I to start a pgpool service, the delegated IP doesn't start.</p>
  
  <p>I have seen in a log file on syslog and got some error like this.</p>
  
  <pre><code>    Oct 25 08:46:25 pgpool-1 pgpool[1647]: [8-2] 2017-10-25 08:46:25: pid 1647: DETAIL:  Host:"172.16.0.42" WD Port:9000 pgpool-II port:5432 
      Oct 25 08:46:25 pgpool-1 pgpool: SIOCSIFADDR: Operation not permitted
      Oct 25 08:46:25 pgpool-1 pgpool: SIOCSIFFLAGS: Operation not permitted
      Oct 25 08:46:25 pgpool-1 pgpool: SIOCSIFNETMASK: Operation not permitted
      Oct 25 08:46:25 pgpool-1 pgpool[1648]: [18-1] 2017-10-25 08:46:25: pid 1648: LOG:  failed to acquire the delegate IP address
      Oct 25 08:46:25 pgpool-1 pgpool[1648]: [18-2] 2017-10-25 08:46:25: pid 1648: DETAIL:  'if_up_cmd' failed
      Oct 25 08:46:25 pgpool-1 pgpool[1648]: [19-1] 2017-10-25 08:46:25: pid 1648: WARNING:  watchdog escalation failed to acquire delegate IP
  </code></pre>
  
  <p>I use ubuntu 14.04 with pgpool2 version 3.6.6-1, and watchdog version 5.31-1.</p>
  
  <p>And I has configured on pgpool.conf at virtual IP setting like this.</p>
  
  <pre><code># - Virtual IP control Setting -
  delegate_IP = '172.16.0.201'
  if_cmd_path = '/sbin'
  if_up_cmd = 'ifconfig eth0:0 inet $_IP_$ netmask 255.255.0.0'
  if_down_cmd = 'ifconfig eth0:0 down'
  arping_path = '/usr/sbin'
  arping_cmd = 'arping -U $_IP_$ -w 1'
  </code></pre>
  
  <p>Any suggestion for this? Thank you for any help.</p>