13 Jan
2015
13 Jan
'15
5:51 a.m.
Daniel. I added 8 algorithm to our server and it works with 2 servers now
but it works strange because:
While works server with priority 1 - all ok. When this server goes down
dispatcher choose next server with lowes priority. But when server with
highest priority waking up dispatcher use server with lowes priority until
this server not goes down.
2015-01-12 15:18 GMT+03:00 Yuriy Gorlichenko <ovoshlook(a)gmail.com>om>:
Daniel. Hello. I see changes at documentation about
algorithms at 4.3
documentation for dispatcher. Now I see than 8 algo use priority. Not I set
this algorithm to my servers but priority still not worked.
my dispatcher settings Are
modparam("dispatcher", "db_url",DBURL)
modparam("dispatcher", "table_name", "dispatcher")
modparam("dispatcher", "setid_col", "setid")
modparam("dispatcher", "priority_col", "priority")
modparam("dispatcher", "destination_col", "destination")
modparam("dispatcher", "force_dst", 1)
modparam("dispatcher", "flags", 3)
modparam("dispatcher", "dst_avp", "$avp(i:271)")
modparam("dispatcher", "grp_avp", "$avp(i:272)")
modparam("dispatcher", "cnt_avp", "$avp(i:273)")
modparam("dispatcher", "ds_ping_from",
"sip:kamailio1@10.0.1.12")
modparam("dispatcher", "ds_ping_interval",15)
modparam("dispatcher", "ds_probing_mode", 1)
modparam("dispatcher", "ds_ping_reply_codes",
"class=2;code=403;code=404;code=484;class=3")
modparam("tm", "reparse_on_dns_failover", 0)
(!ds_select_dst("$var(setid)", "8")){
sl_send_reply("500", "Service Unavailable");
xlog("L_INFO","{$rm} from [$fU@$si:$sp] But NO destinations
available for $rd \n");
t_on_failure("DISPATCHER_ROLLOVER");
}
if (!t_relay()) {
sl_reply_error();
2015-01-10 2:31 GMT+03:00 Yuriy Gorlichenko <ovoshlook(a)gmail.com>om>:
Priority bassed? I've read about all
algorithms of disatcher and can not
find that anone use priority...
-
“0” - hash over callid
-
“1” - hash over from URI.
-
“2” - hash over to URI.
-
“3” - hash over request-URI.
-
“4” - round-robin (next destination).
-
“5” - hash over authorization-username (Proxy-Authorization or
"normal" authorization). If no username is found, round robin is used.
-
“6” - random (using rand()).
-
“7” - hash over the content of PVs string. Note: This works only when
the parameter hash_pvar is set.
-
“8” - use first destination (good for failover).
-
“9” - use weight based load distribution. You have to set the
attribute 'weight' per each address in destination set.
-
“10” - use call load distribution. You have to set the attribute
'duid' (as an unique string id) per each address in destination set. Also,
you must set parameters 'dstid_avp' and 'ds_hash_size'.
The algorithm can be used even with stateless proxy mode, there is no
SIP dialog tracking depending on other modules, just an internal
lightweight call tracking by Call-Id, thus is fast and suitable even for
embedded systems.
The first destination selected by this algorithm is the one that has
the least number of calls associated. The rest of the destination list is
taken in order of the entries in set - anyhow, until a re-route to next
destination happens, the load on each address can change.
This algorithm can be used only for dispatching INVITE requests as it
is the only SIP method creating a SIP call.
-
“X” - if the algorithm is not implemented, the first entry in set is
chosen.
2015-01-09 20:23 GMT+03:00 Daniel-Constantin Mierla <miconda(a)gmail.com>om>:
You probably look for priority based routing --
see the readme of
dispatcher module.
Cheers,
Daniel
On 09/01/15 17:52, Yuriy Gorlichenko wrote:
I as wrote before - we find dispatcher algorithm than can do mechanism
something like this:
Try call to fist server with max priority or weight. OIf this server
unavailible then call second server with less weight and etc.
Does anyone know what ling of algorithm we can use for this?
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