title: pgpool HA + repmgr for Postgresql 9.6
body: <p>I'm trying to conifure pgpool in my postgresql environment (2 postgresql servers + 1 pgpool) to do HA while repmgr is responsible for the replication.</p>
  
  <p>I'm getting the next messages in the log : </p>
  
  <pre><code>017-12-03 19:27:07: pid 19033: DEBUG:  pool_flush_it: flush size: 0
  2017-12-03 19:27:07: pid 19033: DEBUG:  pool_read: read 103 bytes from     backend 1
  2017-12-03 19:27:07: pid 19033: ERROR:  failed to authenticate
  2017-12-03 19:27:07: pid 19033: DETAIL:  password authentication failed for user "nobody"
  2017-12-03 19:27:07: pid 19033: DEBUG:  find_primary_node: no primary node found
  2017-12-03 19:27:08: pid 19033: LOG:  find_primary_node: checking backend no 0
  2017-12-03 19:27:08: pid 19033: DEBUG:  SSL is requested but SSL support is     not available 
  2017-12-03 19:34:27: pid 22132: ERROR:  unable to read data from DB node 1
  2017-12-03 19:34:27: pid 22132: DETAIL:  EOF encountered with backend
  2017-12-03 19:28:27: pid 19033: DEBUG:  find_primary_node: no primary node found
  </code></pre>
  
  <p>The pool_hba.conf : </p>
  
  <pre><code>TYPE  DATABASE    USER        CIDR-ADDRESS          METHOD
  local   all         all                               trust
  host    all         all      127.0.0.1/32             trust
  host    all         all      ::1/128                  trust
  </code></pre>
  
  <p>In postgresql pg_hba.conf I enabled connection from pgpool server : </p>
  
  <pre><code>####pgpool####
  host   all all 172.22.13.170/32 trust
  </code></pre>
  
  <p>1.What can be the problem ? </p>
  
  <p>2.If the repmgr is responsible for the replication should I set the parameter backend_flag to 'DISALLOW_TO_FAILOVER'?</p>
  
  <p>Thanks.</p>