Toby Blake on wrote... | I'd like to say thanks for all the replies to this, it seems to me | that this is probably not the sort of thing that I would like to do on | a long term basis, but would be fine in the short term. I'll explain | why I want to do this. | | We have a system whereby I would like to easily swap one print server | in to take the place of another one, for maintenance, upgrade or | whatever. This could be done in one of two ways - either change the | printcap information held in LDAP, or change the print server alias to | point to another machine, e.g. host1 has an alias of print1, host2 has | an alias of print2 - if I want to take host2 down, I can change the | print2 alias to point to host1. | | The trouble is, our system uses ldap and dns servers on every local | machine which sync with the masters every hour (different machines | will sync at different times to reduce the load). This means that any | changes made to ldap or dns will take between 1 and 60 minutes to | propagate to any one host. | | So, in the example above, in the one-hour period after changing the | alias, I need both host1 and host2 to be able to spool to the same | printers, as various clients will resolve print2 differently. | I suggest you setup both printers with different queues You can then use the lpc redirect to direct print jobs from one queue to the other working one when one of the printers stops working.
We do this all the time in our student labs (with a sign put on the printer when it happens) and both printers can be used when their are no problems. No DNS changes to worry about then. Anthony Thyssen ( System Programmer ) http://www.sct.gu.edu.au/~anthony/ ----------------------------------------------------------------------------- If the automobile had followed the same development as the computer, a Rolls-Royce would today cost $100, get a million miles per gallon, and explode once a year killing everyone inside. -- Robert Cringely, InfoWorld ----------------------------------------------------------------------------- Anthony's Home is his Castle http://www.sct.gu.edu.au/~anthony/ ----------------------------------------------------------------------------- YOU MUST BE A LIST MEMBER IN ORDER TO POST TO THE LPRNG MAILING LIST The address you post from MUST be your subscription address If you need help, send email to [EMAIL PROTECTED] (or lprng-requests or lprng-digest-requests) with the word 'help' in the body. For the impatient, to subscribe to a list with name LIST, send mail to [EMAIL PROTECTED] with: | example: subscribe LIST <mailaddr> | subscribe lprng-digest [EMAIL PROTECTED] unsubscribe LIST <mailaddr> | unsubscribe lprng [EMAIL PROTECTED] If you have major problems, send email to [EMAIL PROTECTED] with the word LPRNGLIST in the SUBJECT line. -----------------------------------------------------------------------------
