Обсуждение: two questions regarding warm-standby on 8.4
Hello.
I am configuring warm-standby as documented here:
I am using "pg_standby", & may have it working corrrectly, but am not sure.
1) The standby database never 'starts', right? (/etc/init.d/postgresql-8.4 start" times out; I can't connect to the db to see if tables are correct).
2) Because of #1, I suppose I can't do a pg_dump on the standby db?
Thanks.
Gx
Hi, On Mon, 2012-01-23 at 09:48 -0500, Gary Webster wrote: > 1) The standby database never 'starts', right? > (/etc/init.d/postgresql-8.4 start" times out; I can't connect to the > db to see if tables are correct). > > 2) Because of #1, I suppose I can't do a pg_dump on the standby db? Both are correct. You need to use 9.0+ to be able to read from standby. Regards, -- Devrim GÜNDÜZ Principal Systems Engineer @ EnterpriseDB: http://www.enterprisedb.com PostgreSQL Danışmanı/Consultant, Red Hat Certified Engineer Community: devrim~PostgreSQL.org, devrim.gunduz~linux.org.tr http://www.gunduz.org Twitter: http://twitter.com/devrimgunduz
Вложения
On Mon, Jan 23, 2012 at 2:48 PM, Gary Webster <webster@lexmark.com> wrote: > I am configuring warm-standby as documented here: > http://www.postgresql.org/docs/8.4/interactive/warm-standby.html > > I am using "pg_standby", & may have it working corrrectly, but am not sure. > > 1) The standby database never 'starts', right? (/etc/init.d/postgresql-8.4 > start" times out; I can't connect to the db to see if tables are correct). > > 2) Because of #1, I suppose I can't do a pg_dump on the standby db? Exactly. That's what Hot Standby does in 9.x -- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services
Hello.
Thanks for the informative replies.
So, is Hot Standby the recommended way to do HA?
My application does not need to be able to do queries on the standby.
On Mon, Jan 23, 2012 at 9:53 AM, Simon Riggs <simon@2ndquadrant.com> wrote:
Exactly. That's what Hot Standby does in 9.xOn Mon, Jan 23, 2012 at 2:48 PM, Gary Webster <webster@lexmark.com> wrote:
> I am configuring warm-standby as documented here:
> http://www.postgresql.org/docs/8.4/interactive/warm-standby.html
>
> I am using "pg_standby", & may have it working corrrectly, but am not sure.
>
> 1) The standby database never 'starts', right? (/etc/init.d/postgresql-8.4
> start" times out; I can't connect to the db to see if tables are correct).
>
> 2) Because of #1, I suppose I can't do a pg_dump on the standby db?
--
Simon Riggs http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
On Mon, Jan 23, 2012 at 8:05 PM, Gary Webster <webster@lexmark.com> wrote: > Thanks for the informative replies. > > So, is Hot Standby the recommended way to do HA? > My application does not need to be able to do queries on the standby. Streaming replication is the recommended way to do HA, which is roughly "yes". -- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services