Hi, I'm using pgpool 2.2.2 connecting to two backends PGSQL8.2.1. Below is a diagram of my configuration
.---> backend0 / App ---> pgpool \ `---> backend1 Where App, for testing purposes is: while [ 1 ]; do psql -U postgres -p 9999 -c "select 1;"; sleep 0.01; done The problem is as follows: 1. pgpool is stopped 2. App is started Every 0.01 secs, outputs: psql: could not connect to server: Connection refused Is the server running locally and accepting connections on Unix domain socket "/tmp/.s.PGSQL.9999"? 4. pgpool tries starting (app is trying connecting every 0.01 secs) 5. pgpool stop running. Below is the output of log of pgpool 2010-01-21 14:31:56 DEBUG: pid 10811: key: listen_addresses 2010-01-21 14:31:56 DEBUG: pid 10811: value: '*' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: port 2010-01-21 14:31:56 DEBUG: pid 10811: value: 9999 kind: 2 2010-01-21 14:31:56 DEBUG: pid 10811: key: pcp_port 2010-01-21 14:31:56 DEBUG: pid 10811: value: 9898 kind: 2 2010-01-21 14:31:56 DEBUG: pid 10811: key: socket_dir 2010-01-21 14:31:56 DEBUG: pid 10811: value: '/tmp' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: pcp_socket_dir 2010-01-21 14:31:56 DEBUG: pid 10811: value: '/tmp' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: backend_socket_dir 2010-01-21 14:31:56 DEBUG: pid 10811: value: '/tmp' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: pcp_timeout 2010-01-21 14:31:56 DEBUG: pid 10811: value: 10 kind: 2 2010-01-21 14:31:56 DEBUG: pid 10811: key: num_init_children 2010-01-21 14:31:56 DEBUG: pid 10811: value: 100 kind: 2 2010-01-21 14:31:56 DEBUG: pid 10811: key: max_pool 2010-01-21 14:31:56 DEBUG: pid 10811: value: 1 kind: 2 2010-01-21 14:31:56 DEBUG: pid 10811: key: child_life_time 2010-01-21 14:31:56 DEBUG: pid 10811: value: 0 kind: 2 2010-01-21 14:31:56 DEBUG: pid 10811: key: connection_life_time 2010-01-21 14:31:56 DEBUG: pid 10811: value: 0 kind: 2 2010-01-21 14:31:56 DEBUG: pid 10811: key: child_max_connections 2010-01-21 14:31:56 DEBUG: pid 10811: value: 0 kind: 2 2010-01-21 14:31:56 DEBUG: pid 10811: key: client_idle_limit 2010-01-21 14:31:56 DEBUG: pid 10811: value: 0 kind: 2 2010-01-21 14:31:56 DEBUG: pid 10811: key: authentication_timeout 2010-01-21 14:31:56 DEBUG: pid 10811: value: 60 kind: 2 2010-01-21 14:31:56 DEBUG: pid 10811: key: logdir 2010-01-21 14:31:56 DEBUG: pid 10811: value: '/tmp' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: pid_file_name 2010-01-21 14:31:56 DEBUG: pid 10811: value: '/var/run/pgpool/pgpool.pid' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: replication_mode 2010-01-21 14:31:56 DEBUG: pid 10811: value: true kind: 1 2010-01-21 14:31:56 DEBUG: pid 10811: key: load_balance_mode 2010-01-21 14:31:56 DEBUG: pid 10811: value: true kind: 1 2010-01-21 14:31:56 DEBUG: pid 10811: key: replication_stop_on_mismatch 2010-01-21 14:31:56 DEBUG: pid 10811: value: true kind: 1 2010-01-21 14:31:56 DEBUG: pid 10811: replication_stop_on_mismatch: 1 2010-01-21 14:31:56 DEBUG: pid 10811: key: replicate_select 2010-01-21 14:31:56 DEBUG: pid 10811: value: false kind: 1 2010-01-21 14:31:56 DEBUG: pid 10811: replicate_select: 0 2010-01-21 14:31:56 DEBUG: pid 10811: key: reset_query_list 2010-01-21 14:31:56 DEBUG: pid 10811: value: 'ABORT; RESET ALL; SET SESSION AUTHORIZATION DEFAULT' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: extract_string_tokens: token: ABORT 2010-01-21 14:31:56 DEBUG: pid 10811: extract_string_tokens: token: RESET ALL 2010-01-21 14:31:56 DEBUG: pid 10811: extract_string_tokens: token: SET SESSION AUTHORIZATION DEFAULT 2010-01-21 14:31:56 DEBUG: pid 10811: key: print_timestamp 2010-01-21 14:31:56 DEBUG: pid 10811: value: true kind: 1 2010-01-21 14:31:56 DEBUG: pid 10811: key: master_slave_mode 2010-01-21 14:31:56 DEBUG: pid 10811: value: false kind: 1 2010-01-21 14:31:56 DEBUG: pid 10811: key: connection_cache 2010-01-21 14:31:56 DEBUG: pid 10811: value: false kind: 1 2010-01-21 14:31:56 DEBUG: pid 10811: key: health_check_timeout 2010-01-21 14:31:56 DEBUG: pid 10811: value: 20 kind: 2 2010-01-21 14:31:56 DEBUG: pid 10811: key: health_check_period 2010-01-21 14:31:56 DEBUG: pid 10811: value: 5 kind: 2 2010-01-21 14:31:56 DEBUG: pid 10811: key: health_check_user 2010-01-21 14:31:56 DEBUG: pid 10811: value: 'postgres' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: failover_command 2010-01-21 14:31:56 DEBUG: pid 10811: value: ' . /var/lib/pgsql/replication/failover_command_trigger %h %d' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: failback_command 2010-01-21 14:31:56 DEBUG: pid 10811: value: ' . /var/lib/pgsql/replication/failback_command_trigger %h %d' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: insert_lock 2010-01-21 14:31:56 DEBUG: pid 10811: value: true kind: 1 2010-01-21 14:31:56 DEBUG: pid 10811: key: ignore_leading_white_space 2010-01-21 14:31:56 DEBUG: pid 10811: value: true kind: 1 2010-01-21 14:31:56 DEBUG: pid 10811: key: log_statement 2010-01-21 14:31:56 DEBUG: pid 10811: value: false kind: 1 2010-01-21 14:31:56 DEBUG: pid 10811: key: log_connections 2010-01-21 14:31:56 DEBUG: pid 10811: value: false kind: 1 2010-01-21 14:31:56 DEBUG: pid 10811: key: log_hostname 2010-01-21 14:31:56 DEBUG: pid 10811: value: false kind: 1 2010-01-21 14:31:56 DEBUG: pid 10811: key: parallel_mode 2010-01-21 14:31:56 DEBUG: pid 10811: value: false kind: 1 2010-01-21 14:31:56 DEBUG: pid 10811: key: enable_query_cache 2010-01-21 14:31:56 DEBUG: pid 10811: value: false kind: 1 2010-01-21 14:31:56 DEBUG: pid 10811: key: pgpool2_hostname 2010-01-21 14:31:56 DEBUG: pid 10811: value: 'localhost' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: system_db_hostname 2010-01-21 14:31:56 DEBUG: pid 10811: value: 'localhost' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: system_db_port 2010-01-21 14:31:56 DEBUG: pid 10811: value: 5432 kind: 2 2010-01-21 14:31:56 DEBUG: pid 10811: key: system_db_dbname 2010-01-21 14:31:56 DEBUG: pid 10811: value: 'pgpool' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: system_db_schema 2010-01-21 14:31:56 DEBUG: pid 10811: value: 'pgpool_catalog' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: system_db_user 2010-01-21 14:31:56 DEBUG: pid 10811: value: 'pgpool' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: system_db_password 2010-01-21 14:31:56 DEBUG: pid 10811: value: '' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: enable_pool_hba 2010-01-21 14:31:56 DEBUG: pid 10811: value: false kind: 1 2010-01-21 14:31:56 DEBUG: pid 10811: key: recovery_user 2010-01-21 14:31:56 DEBUG: pid 10811: value: 'postgres' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: recovery_password 2010-01-21 14:31:56 DEBUG: pid 10811: value: 'postgres' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: recovery_1st_stage_command 2010-01-21 14:31:56 DEBUG: pid 10811: value: 'pgpool_copy_backup' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: recovery_2nd_stage_command 2010-01-21 14:31:56 DEBUG: pid 10811: value: 'pgpool_switch_xlog' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: recovery_timeout 2010-01-21 14:31:56 DEBUG: pid 10811: value: 50400 kind: 2 2010-01-21 14:31:56 DEBUG: pid 10811: key: client_idle_limit_in_recovery 2010-01-21 14:31:56 DEBUG: pid 10811: value: 1 kind: 2 2010-01-21 14:31:56 DEBUG: pid 10811: key: backend_hostname0 2010-01-21 14:31:56 DEBUG: pid 10811: value: '192.168.101.222' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: backend_port0 2010-01-21 14:31:56 DEBUG: pid 10811: value: 5432 kind: 2 2010-01-21 14:31:56 DEBUG: pid 10811: pool_config: port slot number 0 2010-01-21 14:31:56 DEBUG: pid 10811: key: backend_weight0 2010-01-21 14:31:56 DEBUG: pid 10811: value: 1 kind: 2 2010-01-21 14:31:56 DEBUG: pid 10811: pool_config: weight slot number 0 weight: 1.000000 2010-01-21 14:31:56 DEBUG: pid 10811: key: backend_data_directory0 2010-01-21 14:31:56 DEBUG: pid 10811: value: '/var/lib/pgsql/data' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: backend_hostname1 2010-01-21 14:31:56 DEBUG: pid 10811: value: '192.168.101.214' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: key: backend_port1 2010-01-21 14:31:56 DEBUG: pid 10811: value: 5432 kind: 2 2010-01-21 14:31:56 DEBUG: pid 10811: pool_config: port slot number 1 2010-01-21 14:31:56 DEBUG: pid 10811: key: backend_weight1 2010-01-21 14:31:56 DEBUG: pid 10811: value: 1 kind: 2 2010-01-21 14:31:56 DEBUG: pid 10811: pool_config: weight slot number 1 weight: 1.000000 2010-01-21 14:31:56 DEBUG: pid 10811: key: backend_data_directory1 2010-01-21 14:31:56 DEBUG: pid 10811: value: '/var/lib/pgsql/data' kind: 4 2010-01-21 14:31:56 DEBUG: pid 10811: num_backends: 2 num_backends: 2 total_weight: 2.000000 2010-01-21 14:31:56 DEBUG: pid 10811: backend 0 weight: 1073741823.500000 2010-01-21 14:31:56 DEBUG: pid 10811: backend 1 weight: 1073741823.500000 2010-01-21 14:31:56 DEBUG: pid 10869: I am 10869 2010-01-21 14:31:56 DEBUG: pid 10870: I am 10870 2010-01-21 14:31:56 DEBUG: pid 10871: I am 10871 2010-01-21 14:31:56 DEBUG: pid 10872: I am 10872 2010-01-21 14:31:56 DEBUG: pid 10873: I am 10873 2010-01-21 14:31:56 DEBUG: pid 10874: I am 10874 2010-01-21 14:31:56 DEBUG: pid 10875: I am 10875 2010-01-21 14:31:56 DEBUG: pid 10876: I am 10876 2010-01-21 14:31:56 DEBUG: pid 10877: I am 10877 2010-01-21 14:31:56 DEBUG: pid 10873: I am 10873 accept fd 5 2010-01-21 14:31:56 DEBUG: pid 10873: Protocol Major: 3 Minor: 0 database: postgres user: postgres 2010-01-21 14:31:56 DEBUG: pid 10873: new_connection: connecting 0 backend 2010-01-21 14:31:56 DEBUG: pid 10878: I am 10878 2010-01-21 14:31:56 DEBUG: pid 10873: new_connection: connecting 1 backend 2010-01-21 14:31:56 DEBUG: pid 10880: I am 10880 2010-01-21 14:31:56 ERROR: pid 10873: connect_inet_domain_socket: connect() failed: Connection refused 2010-01-21 14:31:56 DEBUG: pid 10881: I am 10881 2010-01-21 14:31:56 ERROR: pid 10873: connection to 192.168.101.214(5432) failed 2010-01-21 14:31:56 ERROR: pid 10873: new_connection: create_cp() failed 2010-01-21 14:31:56 LOG: pid 10873: notice_backend_error: 1 fail over request from pid 10873 2010-01-21 14:31:56 DEBUG: pid 10882: I am 10882 2010-01-21 14:31:56 DEBUG: pid 10872: I am 10872 accept fd 5 2010-01-21 14:31:56 DEBUG: pid 10872: Protocol Major: 3 Minor: 0 database: postgres user: postgres 2010-01-21 14:31:56 DEBUG: pid 10872: new_connection: connecting 0 backend 2010-01-21 14:31:56 DEBUG: pid 10872: new_connection: connecting 1 backend 2010-01-21 14:31:56 ERROR: pid 10872: connect_inet_domain_socket: connect() failed: Connection refused 2010-01-21 14:31:56 ERROR: pid 10872: connection to 192.168.101.214(5432) failed 2010-01-21 14:31:56 ERROR: pid 10872: new_connection: create_cp() failed 2010-01-21 14:31:56 LOG: pid 10872: notice_backend_error: 1 fail over request from pid 10872 2010-01-21 14:31:56 DEBUG: pid 10874: I am 10874 accept fd 5 2010-01-21 14:31:56 DEBUG: pid 10874: Protocol Major: 3 Minor: 0 database: postgres user: postgres 2010-01-21 14:31:56 DEBUG: pid 10874: new_connection: connecting 0 backend 2010-01-21 14:31:56 DEBUG: pid 10874: new_connection: connecting 1 backend 2010-01-21 14:31:56 ERROR: pid 10874: connect_inet_domain_socket: connect() failed: Connection refused 2010-01-21 14:31:56 ERROR: pid 10874: connection to 192.168.101.214(5432) failed 2010-01-21 14:31:56 ERROR: pid 10874: new_connection: create_cp() failed 2010-01-21 14:31:56 LOG: pid 10874: notice_backend_error: 1 fail over request from pid 10874 2010-01-21 14:31:56 DEBUG: pid 10882: I am 10882 accept fd 5 2010-01-21 14:31:56 DEBUG: pid 10882: Protocol Major: 3 Minor: 0 database: postgres user: postgres 2010-01-21 14:31:56 DEBUG: pid 10882: new_connection: connecting 0 backend 2010-01-21 14:31:56 DEBUG: pid 10882: new_connection: connecting 1 backend 2010-01-21 14:31:56 ERROR: pid 10882: connect_inet_domain_socket: connect() failed: Connection refused 2010-01-21 14:31:56 ERROR: pid 10882: connection to 192.168.101.214(5432) failed 2010-01-21 14:31:56 ERROR: pid 10882: new_connection: create_cp() failed 2010-01-21 14:31:56 LOG: pid 10882: notice_backend_error: 1 fail over request from pid 10882 2010-01-21 14:31:56 DEBUG: pid 10877: I am 10877 accept fd 5 2010-01-21 14:31:56 DEBUG: pid 10877: Protocol Major: 3 Minor: 0 database: postgres user: postgres 2010-01-21 14:31:56 DEBUG: pid 10877: new_connection: connecting 0 backend 2010-01-21 14:31:56 DEBUG: pid 10877: new_connection: connecting 1 backend 2010-01-21 14:31:56 ERROR: pid 10877: connect_inet_domain_socket: connect() failed: Connection refused 2010-01-21 14:31:56 ERROR: pid 10877: connection to 192.168.101.214(5432) failed 2010-01-21 14:31:56 ERROR: pid 10877: new_connection: create_cp() failed 2010-01-21 14:31:56 LOG: pid 10877: notice_backend_error: 1 fail over request from pid 10877 2010-01-21 14:31:56 DEBUG: pid 10878: I am 10878 accept fd 5 2010-01-21 14:31:56 DEBUG: pid 10878: Protocol Major: 3 Minor: 0 database: postgres user: postgres 2010-01-21 14:31:56 DEBUG: pid 10878: new_connection: connecting 0 backend 2010-01-21 14:31:56 DEBUG: pid 10878: new_connection: connecting 1 backend 2010-01-21 14:31:56 ERROR: pid 10878: connect_inet_domain_socket: connect() failed: Connection refused 2010-01-21 14:31:56 ERROR: pid 10878: connection to 192.168.101.214(5432) failed 2010-01-21 14:31:56 ERROR: pid 10878: new_connection: create_cp() failed 2010-01-21 14:31:56 LOG: pid 10878: notice_backend_error: 1 fail over request from pid 10878 2010-01-21 14:31:56 DEBUG: pid 10881: I am 10881 accept fd 5 2010-01-21 14:31:56 DEBUG: pid 10881: Protocol Major: 3 Minor: 0 database: postgres user: postgres 2010-01-21 14:31:56 DEBUG: pid 10881: new_connection: connecting 0 backend 2010-01-21 14:31:56 DEBUG: pid 10881: new_connection: connecting 1 backend 2010-01-21 14:31:56 ERROR: pid 10881: connect_inet_domain_socket: connect() failed: Connection refused 2010-01-21 14:31:56 ERROR: pid 10881: connection to 192.168.101.214(5432) failed 2010-01-21 14:31:56 ERROR: pid 10881: new_connection: create_cp() failed 2010-01-21 14:31:56 LOG: pid 10881: notice_backend_error: 1 fail over request from pid 10881 2010-01-21 14:31:56 DEBUG: pid 10880: I am 10880 accept fd 5 2010-01-21 14:31:56 DEBUG: pid 10880: Protocol Major: 3 Minor: 0 database: postgres user: postgres 2010-01-21 14:31:56 DEBUG: pid 10880: new_connection: connecting 0 backend 2010-01-21 14:31:56 DEBUG: pid 10880: new_connection: connecting 1 backend 2010-01-21 14:31:56 ERROR: pid 10880: connect_inet_domain_socket: connect() failed: Connection refused 2010-01-21 14:31:56 ERROR: pid 10880: connection to 192.168.101.214(5432) failed 2010-01-21 14:31:56 ERROR: pid 10880: new_connection: create_cp() failed 2010-01-21 14:31:56 LOG: pid 10880: notice_backend_error: 1 fail over request from pid 10880 2010-01-21 14:31:56 DEBUG: pid 10876: I am 10876 accept fd 5 2010-01-21 14:31:56 DEBUG: pid 10876: Protocol Major: 3 Minor: 0 database: postgres user: postgres 2010-01-21 14:31:56 DEBUG: pid 10876: new_connection: connecting 0 backend 2010-01-21 14:31:56 DEBUG: pid 10876: new_connection: connecting 1 backend 2010-01-21 14:31:56 ERROR: pid 10876: connect_inet_domain_socket: connect() failed: Connection refused 2010-01-21 14:31:56 ERROR: pid 10876: connection to 192.168.101.214(5432) failed 2010-01-21 14:31:56 ERROR: pid 10876: new_connection: create_cp() failed 2010-01-21 14:31:56 LOG: pid 10876: notice_backend_error: 1 fail over request from pid 10876 2010-01-21 14:31:56 DEBUG: pid 10875: I am 10875 accept fd 5 2010-01-21 14:31:56 DEBUG: pid 10875: Protocol Major: 3 Minor: 0 database: postgres user: postgres 2010-01-21 14:31:56 DEBUG: pid 10875: new_connection: connecting 0 backend 2010-01-21 14:31:56 DEBUG: pid 10875: new_connection: connecting 1 backend 2010-01-21 14:31:56 ERROR: pid 10875: connect_inet_domain_socket: connect() failed: Connection refused 2010-01-21 14:31:56 ERROR: pid 10875: connection to 192.168.101.214(5432) failed 2010-01-21 14:31:56 ERROR: pid 10875: new_connection: create_cp() failed 2010-01-21 14:31:56 LOG: pid 10875: notice_backend_error: 1 fail over request from pid 10875 2010-01-21 14:31:56 DEBUG: pid 10871: I am 10871 accept fd 5 2010-01-21 14:31:56 DEBUG: pid 10871: Protocol Major: 3 Minor: 0 database: postgres user: postgres 2010-01-21 14:31:56 DEBUG: pid 10871: new_connection: connecting 0 backend 2010-01-21 14:31:56 DEBUG: pid 10871: new_connection: connecting 1 backend 2010-01-21 14:31:56 ERROR: pid 10871: connect_inet_domain_socket: connect() failed: Connection refused 2010-01-21 14:31:56 ERROR: pid 10871: connection to 192.168.101.214(5432) failed 2010-01-21 14:31:56 ERROR: pid 10871: new_connection: create_cp() failed 2010-01-21 14:31:56 LOG: pid 10871: notice_backend_error: 1 fail over request from pid 10871 2010-01-21 14:31:56 DEBUG: pid 10870: I am 10870 accept fd 5 2010-01-21 14:31:56 DEBUG: pid 10870: Protocol Major: 3 Minor: 0 database: postgres user: postgres 2010-01-21 14:31:56 DEBUG: pid 10870: new_connection: connecting 0 backend 2010-01-21 14:31:56 DEBUG: pid 10870: new_connection: connecting 1 backend 2010-01-21 14:31:56 ERROR: pid 10870: connect_inet_domain_socket: connect() failed: Connection refused 2010-01-21 14:31:56 ERROR: pid 10870: connection to 192.168.101.214(5432) failed 2010-01-21 14:31:56 ERROR: pid 10870: new_connection: create_cp() failed 2010-01-21 14:31:56 LOG: pid 10870: notice_backend_error: 1 fail over request from pid 10870 2010-01-21 14:31:56 DEBUG: pid 10869: I am 10869 accept fd 5 2010-01-21 14:31:56 DEBUG: pid 10869: Protocol Major: 3 Minor: 0 database: postgres user: postgres 2010-01-21 14:31:56 DEBUG: pid 10869: new_connection: connecting 0 backend 2010-01-21 14:31:56 DEBUG: pid 10869: new_connection: connecting 1 backend 2010-01-21 14:31:56 ERROR: pid 10869: connect_inet_domain_socket: connect() failed: Connection refused 2010-01-21 14:31:56 ERROR: pid 10869: connection to 192.168.101.214(5432) failed 2010-01-21 14:31:56 ERROR: pid 10869: new_connection: create_cp() failed 2010-01-21 14:31:56 LOG: pid 10869: notice_backend_error: 1 fail over request from pid 10869 If instead of 0.01 secs, I use 0.1 secs, for example, pgpool runs just fine. Anything I can do beside incrementing the time bewteen tries? Thanks, Daniel _______________________________________________ Pgpool-general mailing list Pgpool-general@pgfoundry.org http://pgfoundry.org/mailman/listinfo/pgpool-general