<div dir="ltr">Hey All,<div><br></div><div>I am getting some strange behaviour with some PGPool instances in AWS.</div><div><br></div><div>I have 2 x PGPool instances (watchdog on) and 2 x PostgreSQL instances. I am using PostgreSQL replication with an external cluster solution.</div><div><br></div><div>I have the following nodes:</div><div><br></div><div><div>show pool_nodes;</div><div> node_id | hostname | port | status | lb_weight | role</div><div>---------+-------------+------+--------+-----------+---------</div><div> 0 | 10.51.9.227 | 5432 | 2 | 0.500000 | standby</div><div> 1 | 10.51.10.29 | 5432 | 2 | 0.500000 | primary</div><div>(2 rows)</div></div><div><br></div><div><br></div><div>The following appears in my log files, after which PGPool effectively hangs on both nodes. A restart of PGpool on both nodes fixes the problem.</div><div><br></div><div><div>2014-09-04 13:37:41 LOG: pid 24322: wd_send_response: WD_STAND_FOR_LOCK_HOLDER received it</div><div>2014-09-04 13:37:41 LOG: pid 24322: degenerate_backend_set: 1 fail over request from pid 24322</div><div>2014-09-04 13:37:41 LOG: pid 24311: wd_start_interlock: start interlocking</div><div>2014-09-04 13:37:41 LOG: pid 24311: starting degeneration. shutdown host 10.51.10.29(5432)</div><div>2014-09-04 13:37:41 ERROR: pid 24311: failover_handler: no valid DB node found</div><div>2014-09-04 13:37:41 LOG: pid 24311: Restart all children</div><div>2014-09-04 13:37:42 LOG: pid 24311: find_primary_node_repeatedly: waiting for finding a primary node</div><div><br></div><div>Any ideas? As this in AWS I wouldn't be surprised if a network issue caused the primary to disappear briefly - but it is never found again.</div><div><br></div><div>I am trying to recreate but haven't had luck yet.</div><div><br></div><div><div style="color:rgb(184,39,106);font-weight:bold;font-style:normal;font-variant:normal;font-size:14px;line-height:normal;font-family:Arial,Helvetica,sans-serif">
<span style="color:rgb(50,59,98)">James Sewell,</span><br>
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