Re: Can I refuse all connections except replication?
Posted in 2003
Topics: High Availability & Replication, Networking & sqlhosts Configuration, Platform-Specific Issues, Jobs, Consulting & Announcements
Dave Thacker wrote: > Obnoxio The Clown <obnoxio@hotmail.com> wrote in message > news:<bl20dt$78q9j$1@ID-64669.news.uni-berlin.de>... >> Dave Thacker wrote: >> >> > Informix 9.30 running on AIX 4.3.3 >> > I have two instances running EDR in update anywhere mode. All >> > connections are usually made to the "primary" instance. The >> > transactions flow from the "primary" to the "backup" unless we declare >> > a disaster. We use internal DNS to control where the various clients >> > on our WAN "see" the primary server. When we run a DR drill, we >> > change the DNS entry for the "primary" to the "backup". When the >> > drill is over we flip the DNS entry back. Many servers cache the >> > "disaster mode" DNS and we've found they continue to connect to >> > "backup" after DNS is changed. >> > >> > I've been asked by management if there is a way to block all TCP/IP >> > connections to the database *except* for replication connections. When >> > we resume normal operations, we'd like the "backup" database to refuse >> > all connections except those sending replication transactions from >> > the primary server. >> > >> > I don't see a mode like this anwhere in the Administrators Guide, Is >> > there a way to do this? >> >> Ay Caramba! Why don't you just use HDR? > > Because HDR was a perfect bitch to set up in 7.3! Oh, bullshit. -- Ciao, The Obnoxious One "Ogni uomo mi guarda come se fossi una testa di cazzo"
"Obnoxio The Clown" <obnoxio@hotmail.com> wrote in message news:blhkh3$cb2q7$1@ID-64669.news.uni-berlin.de... > Dave Thacker wrote: > > > Obnoxio The Clown <obnoxio@hotmail.com> wrote in message > > news:<bl20dt$78q9j$1@ID-64669.news.uni-berlin.de>... > >> Dave Thacker wrote: > >> > >> > Informix 9.30 running on AIX 4.3.3 > >> > I have two instances running EDR in update anywhere mode. All > >> > connections are usually made to the "primary" instance. The > >> > transactions flow from the "primary" to the "backup" unless we declare > >> > a disaster. We use internal DNS to control where the various clients > >> > on our WAN "see" the primary server. When we run a DR drill, we > >> > change the DNS entry for the "primary" to the "backup". When the > >> > drill is over we flip the DNS entry back. Many servers cache the > >> > "disaster mode" DNS and we've found they continue to connect to > >> > "backup" after DNS is changed. > >> > > >> > I've been asked by management if there is a way to block all TCP/IP > >> > connections to the database *except* for replication connections. When > >> > we resume normal operations, we'd like the "backup" database to refuse > >> > all connections except those sending replication transactions from > >> > the primary server. > >> > > >> > I don't see a mode like this anwhere in the Administrators Guide, Is > >> > there a way to do this? > >> > >> Ay Caramba! Why don't you just use HDR? > > > > Because HDR was a perfect bitch to set up in 7.3! > > Oh, bullshit. No, it's true...I'm perfect!!! :-P
Impy wrote: > "Obnoxio The Clown" <obnoxio@hotmail.com> wrote in message > news:blhkh3$cb2q7$1@ID-64669.news.uni-berlin.de... >> Dave Thacker wrote: >> >> > Obnoxio The Clown <obnoxio@hotmail.com> wrote in message >> > news:<bl20dt$78q9j$1@ID-64669.news.uni-berlin.de>... >> >> Dave Thacker wrote: >> >> >> >> > Informix 9.30 running on AIX 4.3.3 >> >> > I have two instances running EDR in update anywhere mode. All >> >> > connections are usually made to the "primary" instance. The >> >> > transactions flow from the "primary" to the "backup" unless we > declare >> >> > a disaster. We use internal DNS to control where the various >> >> > clients >> >> > on our WAN "see" the primary server. When we run a DR drill, we >> >> > change the DNS entry for the "primary" to the "backup". When the >> >> > drill is over we flip the DNS entry back. Many servers cache the >> >> > "disaster mode" DNS and we've found they continue to connect to >> >> > "backup" after DNS is changed. >> >> > >> >> > I've been asked by management if there is a way to block all TCP/IP >> >> > connections to the database *except* for replication connections. > When >> >> > we resume normal operations, we'd like the "backup" database to > refuse >> >> > all connections except those sending replication transactions from >> >> > the primary server. >> >> > >> >> > I don't see a mode like this anwhere in the Administrators Guide, Is >> >> > there a way to do this? >> >> >> >> Ay Caramba! Why don't you just use HDR? >> > >> > Because HDR was a perfect bitch to set up in 7.3! >> >> Oh, bullshit. > > No, it's true...I'm perfect!!! :-P I didn't realise your initials were HDR? -- Ciao, The Obnoxious One "Ogni uomo mi guarda come se fossi una testa di cazzo"
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