Hello, Both options (dns_cache_init=no and use_dns_cache=no) worked for me. I think that the internal resolver is used only if cache is enabled. Thank you!
Santiago Soares Fone: (41) 8488-0537 On Wed, Sep 1, 2010 at 2:09 PM, Daniel-Constantin Mierla <mico...@gmail.com>wrote: > > > On 9/1/10 7:01 PM, Andrei Pelinescu-Onciul wrote: > >> On Sep 01, 2010 at 18:49, Klaus Darilion<klaus.mailingli...@pernau.at> >> wrote: >> >>> kamailio>= 3.0 is based on ser's core which has implemented its own >>> caching resolver library. I do not know if there is a way to disable >>> it complete and use the system's stub resolver. You could try the >>> "use_dns_cache" option: >>> http://sip-router.org/wiki/cookbooks/core-cookbook/devel#dns_parameters >>> >> Yes, if you disable the dns cache it will use the system resolver. >> > > when the cache is enabled and the record is not cached, will first dns > query find the records in /etc/hosts and then cache it? Or in other words, > if a query to internal cache fails, then is used the system resolver? > > Just for sake of completing info in this thread, disabling completely the > internal cache is by global parameter: > dns_cache_init=no > > Thanks, > Daniel > > > It's also used during the initial startup phase, when the dns cache is >> not yet fully initialized. >> >> You could also leave the cache enabled and add/remove records by hand >> (using sercmd or xmlrpc) using the dns rpcs (e.g. dns_add_a, >> dns.add_srv, dns.delete_a a.s.o, for more info see >> >> http://sip-router.org/docbook/sip-router/branch/master/rpc_list/rpc_list.html#dns.add_a >> ). >> >> Andrei >> >> regards >>> klaus >>> >>> Am 01.09.2010 17:10, schrieb Santiago Soares: >>> >>>> Hello, >>>> >>>> I'm using kamailio as a simple load balancer. >>>> My dispatcher list is something like that: >>>> >>>> 1 sip:server1:5060 >>>> 1 sip:server2:5060 >>>> 2 sip:server1:5060 >>>> >>>> and /etc/hosts is >>>> >>>> 10.1.1.1 server1 >>>> 10.1.1.2 server2 >>>> >>>> When I want to do some maintenance task in one of the servers, server2, >>>> for exemple, I simply change /etc/hosts like that: >>>> >>>> 10.1.1.1 server1 >>>> 10.1.1.1 server2 >>>> >>>> And all the traffic is redirected to server 1. It's a simple yet >>>> effective way to remove a server from balancing. >>>> The thing is that it works on kamailio 1.5.3, but on kamailio 3.0.3 it >>>> doesn't work, since kamailio appears to resolv names only by DNS. >>>> I receive this message on startup: >>>> >>>> Sep 1 12:04:32 install /usr/local/sbin/kamailio[16077]: ERROR: >>>> dispatcher [dispatch.c:241]: could not resolve server1 >>>> Sep 1 12:04:32 install /usr/local/sbin/kamailio[16077]: ERROR: >>>> dispatcher [dispatcher.c:247]: no dispatching list loaded from file >>>> Sep 1 12:04:32 install /usr/local/sbin/kamailio[16077]: ERROR:<core> >>>> [sr_module.c:874]: init_mod(): Error while initializing module >>>> dispatcher >>>> >>>> >>>> Is there any way to avoid this behavior, and force kamailio to use >>>> /etc/hosts? >>>> >>>> Thank you. >>>> >>>> Santiago Soares >>>> Fone: (41) 8488-0537 >>>> >>>> >>>> >>>> _______________________________________________ >>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list >>>> sr-users@lists.sip-router.org >>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users >>>> >>> _______________________________________________ >>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list >>> sr-users@lists.sip-router.org >>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users >>> >> _______________________________________________ >> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list >> sr-users@lists.sip-router.org >> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users >> >> > -- > Daniel-Constantin Mierla > http://www.asipto.com/ > > > _______________________________________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list > sr-users@lists.sip-router.org > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users >
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