Re: [Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode?
> - cluster directory of new Master (5433) contains recovery.done This is correct. > - postgresql.conf of new Master (5433) still contains "hot_standby = on". This is correct. > Now, I want to bring up the original Master (5432) as a new Standby. Hence, I > create basebackup and pgpool_remote_start scripts in the cluster directory of > new Master(5433). Before I run pcp_recovery_node, how about the following > things? > > - existing cluster directory of old Master (5432). Who will remove it and > when? I don't follow you. > - recovery.done in cluster of new Master (5433). This needs to be removed Or? It does not. In fact, it should not be removed. If yes, who will remove it? > - where will recovery.conf will reside now? in cluster directory of 5432 or > 5433? In the old master/new standby. -- Josh Berkus PostgreSQL Experts Inc. http://pgexperts.com ___ Pgpool-general mailing list Pgpool-general@pgfoundry.org http://pgfoundry.org/mailman/listinfo/pgpool-general
Re: [Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode?
Also, - who will add "hot_standby = on" in the new Standby and remove it from new Master? - who will add "host replication..." entry in the new Standby's pg_hba.conf? I didn't find all these settings in basebackup. Though, we handle some of them. Please help. From: Sandeep Thakkar To: Sandeep Thakkar ; Tatsuo Ishii Cc: "pgpool-general@pgfoundry.org" Sent: Thursday, September 22, 2011 8:10 PM Subject: Re: [Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode? I know there are lot of posts on online recovery and I have gone through them, but still I've some questions which are unanswered. They are: In streaming replication mode, I have one Master (5432), and one Standby(5433), now once the failover happens, I observe the following: - cluster directory of new Master (5433) contains recovery.done - postgresql.conf of new Master (5433) still contains "hot_standby = on". Is it fine? Now, I want to bring up the original Master (5432) as a new Standby. Hence, I create basebackup and pgpool_remote_start scripts in the cluster directory of new Master(5433). Before I run pcp_recovery_node, how about the following things? - existing cluster directory of old Master (5432). Who will remove it and when? - recovery.done in cluster of new Master (5433). This needs to be removed Or? If yes, who will remove it? - where will recovery.conf will reside now? in cluster directory of 5432 or 5433? Thanks. From: Sandeep Thakkar To: Tatsuo Ishii Cc: "pgpool-general@pgfoundry.org" Sent: Thursday, September 22, 2011 7:02 PM Subject: Re: [Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode? Thanks Guys. Since I use pgpool-II 3.0.4, I installed this function. and when I try to recover the original primary which was down, it recovers, but comes up as primary. It should actually be a standby, right? I also the following line in pgpool.log: Replication of node:1 is behind 67109104 bytes from the primary server (node:0) It seems, I have done something wrong. Any clues here? Thanks. From: Tatsuo Ishii To: sandee...@yahoo.com Cc: pgpool-general@pgfoundry.org Sent: Saturday, September 17, 2011 1:40 PM Subject: Re: [Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode? > I read the 3.0.3 docs and found that pgpool_walrecrunning() should be used > only in replication mode, and that too when somebody is using the > failure/online recovery feature of pgPoll-II. pgpool_walrecrunning is only usefull for streaming replication mode in 3.0.x. > At the same time, I found that this function has undergone some change: > " > > Now "pgpool_walrecrunning()" was not used. pgpool-II used to consider the > node that is promoted a primary node using the function. Now, pgpool-II waits > for completing of the promotion to primary node because it did not work as we > intended. But we still have a problem that pgpool-II waits while recovery_timeout, when there is no primary node(Kitagawa) > " > > Can someone elaborate this please? Also, I assume that I need this function > only when I setup pgPool-II in replication mode. In pgpool-II 3.1 the function is not used anymore even in streaming replication mode. -- Tatsuo Ishii SRA OSS, Inc. Japan English: http://www.sraoss.co.jp/index_en.php Japanese: http://www.sraoss.co.jp ___ Pgpool-general mailing list Pgpool-general@pgfoundry.org http://pgfoundry.org/mailman/listinfo/pgpool-general___ Pgpool-general mailing list Pgpool-general@pgfoundry.org http://pgfoundry.org/mailman/listinfo/pgpool-general
Re: [Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode?
I know there are lot of posts on online recovery and I have gone through them, but still I've some questions which are unanswered. They are: In streaming replication mode, I have one Master (5432), and one Standby(5433), now once the failover happens, I observe the following: - cluster directory of new Master (5433) contains recovery.done - postgresql.conf of new Master (5433) still contains "hot_standby = on". Is it fine? Now, I want to bring up the original Master (5432) as a new Standby. Hence, I create basebackup and pgpool_remote_start scripts in the cluster directory of new Master(5433). Before I run pcp_recovery_node, how about the following things? - existing cluster directory of old Master (5432). Who will remove it and when? - recovery.done in cluster of new Master (5433). This needs to be removed Or? If yes, who will remove it? - where will recovery.conf will reside now? in cluster directory of 5432 or 5433? Thanks. From: Sandeep Thakkar To: Tatsuo Ishii Cc: "pgpool-general@pgfoundry.org" Sent: Thursday, September 22, 2011 7:02 PM Subject: Re: [Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode? Thanks Guys. Since I use pgpool-II 3.0.4, I installed this function. and when I try to recover the original primary which was down, it recovers, but comes up as primary. It should actually be a standby, right? I also the following line in pgpool.log: Replication of node:1 is behind 67109104 bytes from the primary server (node:0) It seems, I have done something wrong. Any clues here? Thanks. From: Tatsuo Ishii To: sandee...@yahoo.com Cc: pgpool-general@pgfoundry.org Sent: Saturday, September 17, 2011 1:40 PM Subject: Re: [Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode? > I read the 3.0.3 docs and found that pgpool_walrecrunning() should be used > only in replication mode, and that too when somebody is using the > failure/online recovery feature of pgPoll-II. pgpool_walrecrunning is only usefull for streaming replication mode in 3.0.x. > At the same time, I found that this function has undergone some change: > " > > Now "pgpool_walrecrunning()" was not used. pgpool-II used to consider the > node that is promoted a primary node using the function. Now, pgpool-II waits > for completing of the promotion to primary node because it did not work as we > intended. But we still have a problem that pgpool-II waits while recovery_timeout, when there is no primary node(Kitagawa) > " > > Can someone elaborate this please? Also, I assume that I need this function > only when I setup pgPool-II in replication mode. In pgpool-II 3.1 the function is not used anymore even in streaming replication mode. -- Tatsuo Ishii SRA OSS, Inc. Japan English: http://www.sraoss.co.jp/index_en.php Japanese: http://www.sraoss.co.jp ___ Pgpool-general mailing list Pgpool-general@pgfoundry.org http://pgfoundry.org/mailman/listinfo/pgpool-general___ Pgpool-general mailing list Pgpool-general@pgfoundry.org http://pgfoundry.org/mailman/listinfo/pgpool-general
Re: [Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode?
Thanks Guys. Since I use pgpool-II 3.0.4, I installed this function. and when I try to recover the original primary which was down, it recovers, but comes up as primary. It should actually be a standby, right? I also the following line in pgpool.log: Replication of node:1 is behind 67109104 bytes from the primary server (node:0) It seems, I have done something wrong. Any clues here? Thanks. From: Tatsuo Ishii To: sandee...@yahoo.com Cc: pgpool-general@pgfoundry.org Sent: Saturday, September 17, 2011 1:40 PM Subject: Re: [Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode? > I read the 3.0.3 docs and found that pgpool_walrecrunning() should be used > only in replication mode, and that too when somebody is using the > failure/online recovery feature of pgPoll-II. pgpool_walrecrunning is only usefull for streaming replication mode in 3.0.x. > At the same time, I found that this function has undergone some change: > " > > Now "pgpool_walrecrunning()" was not used. pgpool-II used to consider the > node that is promoted a primary node using the function. Now, pgpool-II waits > for completing of the promotion to primary node because it did not work as we > intended. But we still have a problem that pgpool-II waits while > recovery_timeout, when there is no primary node(Kitagawa) > " > > Can someone elaborate this please? Also, I assume that I need this function > only when I setup pgPool-II in replication mode. In pgpool-II 3.1 the function is not used anymore even in streaming replication mode. -- Tatsuo Ishii SRA OSS, Inc. Japan English: http://www.sraoss.co.jp/index_en.php Japanese: http://www.sraoss.co.jp___ Pgpool-general mailing list Pgpool-general@pgfoundry.org http://pgfoundry.org/mailman/listinfo/pgpool-general
Re: [Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode?
'replication_mode = true' means sincronous replication with pgpool-II, pgpool_walrecrunning function is used for streaming replication, configuring pgpool-II in master/slave sub-mode stream. Regards. De: pgpool-general-boun...@pgfoundry.org [mailto:pgpool-general-boun...@pgfoundry.org] En nombre de Sandeep Thakkar Enviado el: lunes, 19 de septiembre de 2011 01:32 Para: Tatsuo Ishii CC: pgpool-general@pgfoundry.org Asunto: Re: [Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode? Thanks Tatsuo. By streaming replication mode, you mean the 'replication_mode = true' in pgpool.conf? If I use pgpool-II-3.0.3, and configure it in Master/Slave mode with sub mode as 'stream', then I do not need this function., right? Sandeep. From: Tatsuo Ishii To: sandee...@yahoo.com Cc: pgpool-general@pgfoundry.org Sent: Saturday, September 17, 2011 1:40 PM Subject: Re: [Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode? > I read the 3.0.3 docs and found that pgpool_walrecrunning() should be used > only in replication mode, and that too when somebody is using the > failure/online recovery feature of pgPoll-II. pgpool_walrecrunning is only usefull for streaming replication mode in 3.0.x. > At the same time, I found that this function has undergone some change: > " > > Now "pgpool_walrecrunning()" was not used. pgpool-II used to consider the > node that is promoted a primary node using the function. Now, pgpool-II waits > for completing of the promotion to primary node because it did not work as we > intended. But we still have a problem that pgpool-II waits while > recovery_timeout, when there is no primary node(Kitagawa) > " > > Can someone elaborate this please? Also, I assume that I need this function > only when I setup pgPool-II in replication mode. In pgpool-II 3.1 the function is not used anymore even in streaming replication mode. -- Tatsuo Ishii SRA OSS, Inc. Japan English: http://www.sraoss.co.jp/index_en.php Japanese: http://www.sraoss.co.jp ___ Pgpool-general mailing list Pgpool-general@pgfoundry.org http://pgfoundry.org/mailman/listinfo/pgpool-general
Re: [Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode?
> Thanks Tatsuo. You are welcome. > By streaming replication mode, you mean the 'replication_mode = true' in > pgpool.conf? No. by "streaming replication mode", I meant master/Slave mode with sub mode as 'stream'. > If I use pgpool-II-3.0.3, and configure it in Master/Slave mode with sub mode > as 'stream', then I do not need this function., right? No, you need this function when you use "streaming replication mode"(master/Slave mode with sub mode as 'stream'). -- Tatsuo Ishii SRA OSS, Inc. Japan English: http://www.sraoss.co.jp/index_en.php Japanese: http://www.sraoss.co.jp ___ Pgpool-general mailing list Pgpool-general@pgfoundry.org http://pgfoundry.org/mailman/listinfo/pgpool-general
Re: [Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode?
Thanks Tatsuo. By streaming replication mode, you mean the 'replication_mode = true' in pgpool.conf?If I use pgpool-II-3.0.3, and configure it in Master/Slave mode with sub mode as 'stream', then I do not need this function., right? Sandeep. From: Tatsuo Ishii To: sandee...@yahoo.com Cc: pgpool-general@pgfoundry.org Sent: Saturday, September 17, 2011 1:40 PM Subject: Re: [Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode? > I read the 3.0.3 docs and found that pgpool_walrecrunning() should be used > only in replication mode, and that too when somebody is using the > failure/online recovery feature of pgPoll-II. pgpool_walrecrunning is only usefull for streaming replication mode in 3.0.x. > At the same time, I found that this function has undergone some change: > " > > Now "pgpool_walrecrunning()" was not used. pgpool-II used to consider the > node that is promoted a primary node using the function. Now, pgpool-II waits > for completing of the promotion to primary node because it did not work as we > intended. But we still have a problem that pgpool-II waits while > recovery_timeout, when there is no primary node(Kitagawa) > " > > Can someone elaborate this please? Also, I assume that I need this function > only when I setup pgPool-II in replication mode. In pgpool-II 3.1 the function is not used anymore even in streaming replication mode. -- Tatsuo Ishii SRA OSS, Inc. Japan English: http://www.sraoss.co.jp/index_en.php Japanese: http://www.sraoss.co.jp___ Pgpool-general mailing list Pgpool-general@pgfoundry.org http://pgfoundry.org/mailman/listinfo/pgpool-general
Re: [Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode?
> I read the 3.0.3 docs and found that pgpool_walrecrunning() should be used > only in replication mode, and that too when somebody is using the > failure/online recovery feature of pgPoll-II. pgpool_walrecrunning is only usefull for streaming replication mode in 3.0.x. > At the same time, I found that this function has undergone some change: > " > > Now "pgpool_walrecrunning()" was not used. pgpool-II used to consider the > node that is promoted a primary node using the function. Now, pgpool-II waits > for completing of the promotion to primary node because it did not work as we > intended. But we still have a problem that pgpool-II waits while > recovery_timeout, when there is no primary node(Kitagawa) > " > > Can someone elaborate this please? Also, I assume that I need this function > only when I setup pgPool-II in replication mode. In pgpool-II 3.1 the function is not used anymore even in streaming replication mode. -- Tatsuo Ishii SRA OSS, Inc. Japan English: http://www.sraoss.co.jp/index_en.php Japanese: http://www.sraoss.co.jp ___ Pgpool-general mailing list Pgpool-general@pgfoundry.org http://pgfoundry.org/mailman/listinfo/pgpool-general
[Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode?
Hi, I read the 3.0.3 docs and found that pgpool_walrecrunning() should be used only in replication mode, and that too when somebody is using the failure/online recovery feature of pgPoll-II. At the same time, I found that this function has undergone some change: " Now "pgpool_walrecrunning()" was not used. pgpool-II used to consider the node that is promoted a primary node using the function. Now, pgpool-II waits for completing of the promotion to primary node because it did not work as we intended. But we still have a problem that pgpool-II waits while recovery_timeout, when there is no primary node(Kitagawa) " Can someone elaborate this please? Also, I assume that I need this function only when I setup pgPool-II in replication mode. Thanks. ___ Pgpool-general mailing list Pgpool-general@pgfoundry.org http://pgfoundry.org/mailman/listinfo/pgpool-general
