On 05/15/2017 01:10 PM, Devrim Gündüz wrote:
Hi,
On Mon, 2017-05-15 at 12:55 -0700, Ken Tanzer wrote:
Hi. On a Centos 6.9 server (in the cloud with Rackspace), I'm wanting to
install PGDG 9.6 alongside the already-running 9.2. After installing the
9.6 packages (and even before doing an initdb), I am no
longer able to make a local connection to the 9.2 server. Instead I get
the message:
psql: could not connect to server: Connection refused
Is the server running locally and accepting
connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?
That socket file does not exist on the server. (And in fact, the
/var/run/postgresql directory didn't exist before installing 9.6). When I
configure 9.6 to use port 5433 and run it, it does create that socket for
5433. I tried creating such a socket manually for 5432, but that didn't
seem to change anything.
Any help in getting this working and/or pointing out what I'm missing would
be great. I'm also confused conceptually about what is happening here.
What is it that the installation (but not execution) of 9.6 does that's
blocking the local 9.2 access? I'm guessing it's gotta be something in the
RPM install scripts.
PGDG RPMs use alternatives method, to replace some binaries that can be used
across multiple PostgreSQL versions, and psql is one of them. When you install
9.6, 9.6's psql has higher priority than 9.2, so that one is used -- and 9.4+
are complied with a patch that changes default socket directory from /tmp to
/var/run/postgresql, and 9.2 is not aware of that.
Workarounds:
* You can connect to 9.2 using /usr/pgsql-9.2/bin/psql command. It knows the
old socket directory.
That was where I was going until I saw this in the OP:
bash-4.1$ /usr/pgsql-9.2/bin/psql -p 5432
psql: could not connect to server: Connection refused
Is the server running locally and accepting
connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?
* Pass -h /tmp to 9.6's psql, so that it connects to 9.2 instance.
-HTH
Regards,
--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx
--
Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general
