У меня есть рабочая установка доставки WAL с подчиненным сервером «горячего» резервирования, применяющим файлы WAL.
Когда я создаю файл триггера pg_standby, он обнаруживает это сразу, но для этого требуется около 10-15 минут.на самом деле быть готовым к принятию соединений.Большую часть времени тратится на ожидание файлов .history.
Файл триггера пуст, поэтому следует выполнить «умное» аварийное переключение.Могу ли я сделать что-то, чтобы сделать аварийное переключение (намного) быстрее?
Вывод журнала:
WAL file not present yet. Checking for trigger file...
trigger file found: smart failover
LOG: could not open file "pg_xlog/000000010000000000000089" (log file 0, segment 137): No such file or directory
LOG: redo done at 0/88003428
LOG: last completed transaction was at log time 2010-08-10 13:26:20.232799+00
Trigger file : /psql_archive/role.master
Waiting for WAL file : 000000010000000000000088
WAL file path : /psql_archive/000000010000000000000088
Restoring to : pg_xlog/RECOVERYXLOG
Sleep interval : 60 seconds
Max wait interval : 0 forever
Command for restore : cp "/psql_archive/000000010000000000000088" "pg_xlog/RECOVERYXLOG"
Keep archive history : 000000000000000000000000 and later
trigger file found: smart failover
running restore : OK
LOG: restored log file "000000010000000000000088" from archive
Trigger file : /psql_archive/role.master
Waiting for WAL file : 00000002.history
WAL file path : /psql_archive/00000002.history
Restoring to : pg_xlog/RECOVERYHISTORY
Sleep interval : 60 seconds
Max wait interval : 0 forever
Command for restore : cp "/psql_archive/00000002.history" "pg_xlog/RECOVERYHISTORY"
Keep archive history : 000000000000000000000000 and later
running restore :cp: cannot stat `/psql_archive/00000002.history': No such file or directory
cp: cannot stat `/psql_archive/00000002.history': No such file or directory
cp: cannot stat `/psql_archive/00000002.history': No such file or directory
cp: cannot stat `/psql_archive/00000002.history': No such file or directory
not restored
history file not found
LOG: selected new timeline ID: 2
Trigger file : /psql_archive/role.master
Waiting for WAL file : 00000001.history
WAL file path : /psql_archive/00000001.history
Restoring to : pg_xlog/RECOVERYHISTORY
Sleep interval : 60 seconds
Max wait interval : 0 forever
Command for restore : cp "/psql_archive/00000001.history" "pg_xlog/RECOVERYHISTORY"
Keep archive history : 000000000000000000000000 and later
running restore :cp: cannot stat `/psql_archive/00000001.history': No such file or directory
cp: cannot stat `/psql_archive/00000001.history': No such file or directory
cp: cannot stat `/psql_archive/00000001.history': No such file or directory
cp: cannot stat `/psql_archive/00000001.history': No such file or directory
not restored
history file not found
LOG: archive recovery complete
LOG: autovacuum launcher started
LOG: database system is ready to accept connections
Спасибо.
-dennis