Damien Churchill wrote: > Hi there, > > I have done quite a bit of searching but have been unable to find any > way to do this. I am quite keen to use PostgreSQL 9.0's streaming > replication to create a master/slave write/read setup. However I am > unsure of an upgrade procedure whilst using streaming replication that > doesn't yield any downtime (including being able to write). From what > I have read the WAL won't be compatible between 9.0 and 9.1 so it > won't be possible to take the slave off-line and upgrade it, promote > it to master and then upgrade the old master. > > So I was wondering if anyone knows of a method that allows you to do > this. Sorry if this is an often asked question and I just haven't been > able to find the answer. Good question. I think you have to disconnect the slave, use pg_upgrade to upgrade the master, and make a new slave. It is something we had not considered. I don't think you can run pg_upgrade on the slave and have it work. -- Bruce Momjian <bruce@xxxxxxxxxx> http://momjian.us EnterpriseDB http://enterprisedb.com + It's impossible for everything to be true. + -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
