[pgpool-general: 1159] Re: Watchdog error - wd_init: delegate_IP already exists

Tue Nov 6 09:20:16 JST 2012

Wait a few seconds after the first pgpool has started. 
Then, you would be able to start the second successfully.

I recognize this problem and am trying to resolve it.

On Mon, 5 Nov 2012 07:07:25 -0800
Lonni J Friedman <netllama at gmail.com> wrote:

> I've seen this happen often a well.  I'm guessing that there's a race
> condition somewhere.
> 
> On Mon, Nov 5, 2012 at 7:00 AM, Will Ferguson <will.ferguson at vyre.com> wrote:
> > Hello
> >
> > I have two pgpool servers: will-pgpool1 & will-pgpool2 with watchdog enabled
> >
> > I can start will-pgpool2 first which takes the virtual IP, and then start
> > will-pgpool1 and all works fine.
> >
> > But if I start will-pgpool1 first which takes the virtual IP, and then start
> > will-pgpool2 the pgpool2 server doesn't start.
> >
> > Both pgpool.conf files are the same except wd_hostname and
> > other_pgpool_hostname0
> >
> > Both instances are started as root with -d -n
> >
> > Below is the log debug output.
> >
> > Thanks,
> >
> > Will
> >
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: listen_addresses
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: '*' kind: 4
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: port
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 9999 kind: 2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: socket_dir
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: '/tmp' kind: 4
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: pcp_port
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 9898 kind: 2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: pcp_socket_dir
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: '/tmp' kind: 4
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: backend_hostname0
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 'will-db1' kind: 4
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: backend_port0
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 5432 kind: 2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: pool_config: port slot number 0
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: backend_weight0
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 1 kind: 2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: pool_config: weight slot number 0
> > weight: 1.000000
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: backend_data_directory0
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: '/data/postgres' kind: 4
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: backend_flag0
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 'ALLOW_TO_FAILOVER' kind: 4
> > 2012-11-05 14:58:40 DEBUG: pid 2145: extract_string_tokens: token:
> > ALLOW_TO_FAILOVER
> > 2012-11-05 14:58:40 DEBUG: pid 2145: pool_config: allow_to_failover on
> > 2012-11-05 14:58:40 DEBUG: pid 2145: pool_config: slot number 0 flag: 0000
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: backend_hostname1
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 'will-db2' kind: 4
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: backend_port1
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 5432 kind: 2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: pool_config: port slot number 1
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: backend_weight1
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 1 kind: 2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: pool_config: weight slot number 1
> > weight: 1.000000
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: backend_data_directory1
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: '/data/postgres' kind: 4
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: backend_flag1
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 'ALLOW_TO_FAILOVER' kind: 4
> > 2012-11-05 14:58:40 DEBUG: pid 2145: extract_string_tokens: token:
> > ALLOW_TO_FAILOVER
> > 2012-11-05 14:58:40 DEBUG: pid 2145: pool_config: allow_to_failover on
> > 2012-11-05 14:58:40 DEBUG: pid 2145: pool_config: slot number 1 flag: 0000
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: backend_hostname2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 'will-db3' kind: 4
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: backend_port2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 5432 kind: 2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: pool_config: port slot number 2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: backend_weight2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 1 kind: 2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: pool_config: weight slot number 2
> > weight: 1.000000
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: backend_data_directory2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: '/data/postgres' kind: 4
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: backend_flag2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 'ALLOW_TO_FAILOVER' kind: 4
> > 2012-11-05 14:58:40 DEBUG: pid 2145: extract_string_tokens: token:
> > ALLOW_TO_FAILOVER
> > 2012-11-05 14:58:40 DEBUG: pid 2145: pool_config: allow_to_failover on
> > 2012-11-05 14:58:40 DEBUG: pid 2145: pool_config: slot number 2 flag: 0000
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: enable_pool_hba
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: on kind: 1
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: authentication_timeout
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 60 kind: 2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: ssl
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: off kind: 1
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: num_init_children
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 32 kind: 2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: max_pool
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 4 kind: 2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: child_life_time
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 300 kind: 2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: child_max_connections
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 0 kind: 2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: connection_life_time
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 0 kind: 2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: client_idle_limit
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 0 kind: 2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: log_destination
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 'stderr' kind: 4
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: print_timestamp
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: on kind: 1
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: log_connections
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: off kind: 1
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: log_hostname
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: on kind: 1
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: log_statement
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: off kind: 1
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: log_per_node_statement
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: off kind: 1
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: w
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value:
> >  kind: 7
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: log_standby_delay
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 'always' kind: 4
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: syslog_facility
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 'LOCAL0' kind: 4
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: syslog_ident
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 'pgpool' kind: 4
> > 2012-11-05 14:58:40 DEBUG: pid 2145: key: debug_level
> > 2012-11-05 14:58:40 DEBUG: pid 2145: value: 0 kind: 2
> > 2012-11-05 14:58:40 DEBUG: pid 2145: loading "/usr/local/etc/pool_hba.conf"
> > for client authentication configuration file
> > 2012-11-05 14:58:40 LOG:   pid 2145: wd_chk_sticky: ifup[/sbin/ifconfig]
> > doesn't have sticky bit
> > 2012-11-05 14:58:40 LOG:   pid 2145: wd_create_send_socket: connect()
> > reports failure (Connection refused). You can safely ignore this while
> > starting up.
> > 2012-11-05 14:58:42 ERROR: pid 2145: wd_init: delegate_IP already exists
> > 2012-11-05 14:58:42 ERROR: pid 2145: watchdog: wd_init failed
> > 2012-11-05 14:58:42 ERROR: pid 2145: wd_main error
> > 2012-11-05 14:58:42 ERROR: pid 2145: unlink(/tmp/.s.PGSQL.9898) failed: No
> > such file or directory
> > 2012-11-05 14:58:42 DEBUG: pid 2145: shmem_exit(1)
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-- 
Yugo Nagata <nagata at sraoss.co.jp>