Date: Sun, 15 Jan 2012 17:53:00 +0000 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: freebsd-questions@freebsd.org Subject: Re: database apps that ignore sockets? [was: Solution: mysqld fails to run, can't create/find mysql.sock] Message-ID: <4F13127C.6060408@infracaninophile.co.uk> In-Reply-To: <0E0B740B-4E2C-41C8-A8A4-BC92DC0D7089@mac.com> References: <0F82362E-2694-4EBC-B019-DE2F2C160D45@gmail.com> <7325D262-C6EB-42DB-870D-D3E2FAC9D0C1@mac.com> <1954AA20-BE6F-4F04-A770-49ECFA405B5D@gmail.com> <3D14230E-7E8A-4E35-8161-F5F9CB74C83C@mac.com> <3720E228-67EE-4F44-B828-AFA0125D2A54@gmail.com> <0E0B740B-4E2C-41C8-A8A4-BC92DC0D7089@mac.com>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig607555994AE9F9C9D873C04D Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 15/01/2012 17:20, Chuck Swiger wrote: > If you specify a hostname and port via "--host=3Dlocalhost > --port=3D3306", then you are describing a TCP socket. There is no > pathname involved. You could connect regardless of where mysqld is > putting the socket. Some MySQL clients will gratuitously change a connection attempt to localhost to use the /tmp/mysql.sock unix domain socket because it does perform a bit faster, and it seems they don't expect their users to just ask for a socket connection explicitly. You can test this fairly simply: set up your server with 'skip-networking' temporarily and try making client connections to it. Of course, for some language API's there's no option but to use a network socket -- Java being a case in point -- but that's the exception rather than the rule. To force the command line mysql(1) client to use a network connection to localhost you need to use the --protocol=3DTCP argument Cheers, Matthew --=20 Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate JID: matthew@infracaninophile.co.uk Kent, CT11 9PW --------------enig607555994AE9F9C9D873C04D Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.16 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk8TEoUACgkQ8Mjk52CukIzbbgCfbSEztHNeyA8Vs7MecnyHSR/4 RRcAoILXYSSmnbh9u80FIVFVT/btsYQZ =agkq -----END PGP SIGNATURE----- --------------enig607555994AE9F9C9D873C04D--
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