On Tue, Sep 21, 2010 at 8:32 AM, David Fetter <david@fetter.org> wrote:
On Mon, Sep 20, 2010 at 05:48:40PM -0700, fazool mein wrote: > Hi, > > I want to shut down the server under certain conditions that can be > checked inside a backend process. For instance, while running > symmetric
Synchronous?
I meant streaming :), but the question is in general for any process forked by the postmaster.
> replication, if the primary dies, I want the the walreceiver to > detect that and shutdown the standby. The reason for shutdown is > that I want to execute some other stuff before I start the standby > as a primary. Creating a trigger file doesn't help as it converts > the standby into primary at run time. > > Using proc_exit() inside walreceiver only terminates the walreceiver > process, which postgres starts again. The other way I see is using > ereport(PANIC, ...). Is there some other way to shutdown the main > server from within a backend process?
Perhaps I've misunderstood, but since there's already Something Else(TM) which takes actions, why not send a message to it so it can take appropriate action on the node, starting with shutting it down?