Hi,
You can configure Kamailio with dispatcher to an behavior like you want.
I personal would not set an destination to IP on 500 but that depends on your needs.
Kind regards
Jawaid Bazyar bazyar@gmail.com schrieb am Di., 14. März 2023, 00:41:
Hi,
Maybe it would be easier to explain my expectations on how it's supposed to work, and then you can tell me where I'm making a wrong assumption __
So, load balancers like haproxy etc perform "health checks" on the service being balanced. In this case, I have it setup for Kamailio to send OPTIONS and I do in fact see those packets and 200 OK responses. And if haproxy sees a host is down, it immediately stops trying to send client requests to that host.
In this case, after 10 successful OPTIONS pings, Kamailio marks the destination as AP and everything is fine, Kamailio correctly returns the destination in ds_select_dst.
I have the settings below, so that if the service misses 5 OPTIONS checks, Kamailio should mark that destination as "inactive". But, it should keep probing it, so Kamailio can detect when the destination comes back up. So as I understand it, that's the status "IP".
And, Kamailio should stop including that destination in the responses from ds_select_dst().
And all of that is behaving as expected, EXCEPT that last bit - ds_select_dst continues to include the IP (inactive) destination in responses.
I added
ds_mark_dst("ip");in the event of a 500 or branch failure response, but I don't understand why this is needed, because the destination is already in "IP" mode.
So seemingly Kamailio knows the destination is inactive, but ds_select_dst isn't acting on it unless I manually mark the target also.
Perhaps I am overlooking an option?
Regards,
Jawaid
On 3/13/23, 9:51 AM, "Henning Westerholt" <hw@gilawa.com mailto: hw@gilawa.com> wrote:
Hello,
probing means in this context sending OPTIONS pings, yes.
In mode 1 you can disable the probing by setting flag 4 to the destination in the dispatcher file, according to the docs.
Cheers,
Henning
-----Original Message----- From: Henning Westerholt <hw@gilawa.com mailto:hw@gilawa.com> Sent: Montag, 13. März 2023 15:55 To: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org mailto:sr-users@lists.kamailio.org> Subject: [SR-Users] Re: Dispatcher behavior
Hello,
not sure what the "auto-probing" mode is, but you can configure the dispatcher OPTIONS ping behaviour with that parameter:
https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p... < https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p...
Cheers,
Henning
-----Original Message----- From: Jawaid Bazyar <bazyar@gmail.com mailto:bazyar@gmail.com> Sent: Montag, 13. März 2023 14:33 To: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org mailto:sr-users@lists.kamailio.org> Subject: [SR-Users] Re: Dispatcher behavior
Hi Alex,
I don't see "auto-probing" in the documentation.. here is my dispatcher config that I snatched from somewhere on the Internet.
modparam("dispatcher", "db_url", "mysql://xxxxxxx/kamailio") #Use DBURL variable for database parameters modparam("dispatcher", "flags", 2) # If flag 2 is set, then the failover support is enabled. modparam("dispatcher", "table_name", "dispatcher") modparam("dispatcher", "ds_ping_interval", 5) #How often to ping destinations to check status modparam("dispatcher", "ds_ping_method", "OPTIONS") #Send SIP Options ping modparam("dispatcher", "ds_probing_threshold", 5) #How many failed pings in a row do we need before we consider it down modparam("dispatcher", "ds_inactive_threshold", 10) #How many sucessful pings in a row do we need before considering it up modparam("dispatcher", "ds_ping_latency_stats", 1) #Enables stats on latency modparam("dispatcher", "ds_probing_mode", 1) #Keeps pinging gateways when state is known (to detect change in state)
On 3/12/23, 8:28 PM, "Alex Balashov" <abalashov@evaristesys.com mailto: abalashov@evaristesys.com <mailto:abalashov@evaristesys.com mailto: abalashov@evaristesys.com>> wrote:
Unless you have auto-probing enabled, yes.
On Mar 12, 2023, at 9:14 PM, Jawaid Bazyar <bazyar@gmail.com <mailto:
bazyar@gmail.com> <mailto:bazyar@gmail.com mailto:bazyar@gmail.com>> wrote:
Hi, is this expected behavior? I have two target hosts in a dispatcher set, 10.20.20.118 (prio 5) and
10.20.20.252 (prio 10).
When I have 10.20.20.252 turned off, dispatcher still tries to send
packets to that host, even when the status flags are IP.
root@vs-rs01:/etc/kamailio# kamcmd dispatcher.list { NRSETS: 1 RECORDS: { SET: { ID: 1 TARGETS: { DEST: { URI: sip:10.20.20.252:5060 FLAGS: IP PRIORITY: 10 LATENCY: { AVG: 0.000000 STD: 0.000000 EST: 0.000000 MAX: 0 TIMEOUT: 62 } } DEST: { URI: sip:10.20.20.118:5060 FLAGS: AP PRIORITY: 5 LATENCY: { AVG: 3.876000 STD: 2.965000 EST: 5.058000 MAX: 14 TIMEOUT: 0 } } } } } } __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave@lists.kamailio.org <mailto:
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