More cores
http://pastebin.com/MXW2VBhi
http://pastebin.com/T7JFAP2U
http://pastebin.com/u44aaVpWquit
http://pastebin.com/SFKKcGxE
http://pastebin.com/dwSgMsJi
http://pastebin.com/9HdGLm96
I've put 2.2.3 on the dev box now and will try to replicate on that box,
but its difficult to replicate the traffic artificially. I'll try to
replicate the fault on the dev box over the weekend. I cant do it on the
live gateways because it will affect customer traffic.
Regards,
Richard
On 03/03/2017 11:28, Richard Robson wrote:
I've revisited the gateway failover mechanism I had developed in order
to re route calls to the next gateway on 500's due to capacity on the
gateways we are using.
we have 3 gateways from one carrier and one from another. The 3 have 4
cps and will return a 503 or 500 if we breach this. The single gateway
from the other carrier has plenty of capacity and should not be a
problem so we want to catch this . and route to the next gateway.
We are counting the CPS and channel limits and are routing to the next
gateway if we exceed the limit set, but There are still occasions
where a 5XX is generated, which results in a rejected call.
We want to stop these rejected calls and therefore want to implement
the failover mechanism for the 5XX responses. For 6 months we have
been failing over if we think the counts are to high on any one
gateway without a problem. But when I implement a failover on a 5XX
response opensips starts crashing.
It's difficult to generate artificial traffic to mimic the real
traffic, but I've not had a problem with the script in testing. Last
night I rolled out the new script but by 09:15 this morning opensips
started crashing 10 times in 5 minutes. This was as the traffic ramped
up. I rolled back the script and it restarted OK and has not crashed
since. Therefore the Failover Mechanism in the script is where the
crash is happening
Core dump: http://pastebin.com/CqnESCm4
I'll add more dumps later
Regards,
Richard
this is the failure route catching the 5XX
failure_route[dr_fo] {
xlog (" [dr] Recieved reply to method $rm From: $fd, $fn,
$ft, $fu, $fU, $si, $sp, To: $ru");
if (t_was_cancelled()) {
xlog("[dr]call cancelled by internal caller");
rtpengine_manage();
do_accounting("db", "cdr|missed");
exit;
}
if ( t_check_status("[54]03")) {
route(relay_failover);
}
if ( t_check_status("500")) {
route(relay_failover);
}
do_accounting("db", "cdr|missed");
rtpengine_manage();
exit;
}
This is the route taken on the failure
route[relay_failover]{
if (use_next_gw()) {
xlog("[relay_failover-route] Selected Gateway is $rd");
$avp(trunkratelimit)=$(avp(attrs){s.select,0,:});
$avp(trunkchannellimit)=$(avp(attrs){s.select,1,:});
####### check channel limit ######
get_profile_size("outbound","$rd","$var(size)");
xlog("[relay_failover-route] Selected Gateway is $rd
var(size) = $var(size)");
xlog("[relay_failover-route] Selected Gateway is $rd
avp(trunkcalllimit) = $avp(trunkchannellimit)");
xlog("[relay_failover-route] Selected Gateway is $rd
result = ( $var(size) > $avp(trunkchannellimit))");
if ( $(var(size){s.int}) >
$(avp(trunkchannellimit){s.int})) {
xlog("[relay_failover-route] Trunk $rd
exceeded $avp(trunkchannellimit) concurrent calls $var(size)");
route(relay_failover);
}
} else {
send_reply("503", "Gateways Exhusted");
exit;
}
##### We need to check Rate Limiting #######
if (!rl_check("$rd", "$(avp(trunkratelimit){s.int})",
"TAILDROP")) { # Check Rate limit $avp needs changing
rl_dec_count("$rd"); # decrement the counter since
we've not "used" one
xlog("[ratelimiter-route] [Max CPS:
$(avp(trunkratelimit){s.int}) Current CPS: $rl_count($rd)] Call to:
$rU from: $fU CPS exceeded, delaying");
$avp(initial_time)=($Ts*1000)+($Tsm/1000);
async(usleep("200000"),relay_failover_delay);
xlog ("Should not get here!!!! after async requst");
} else {
xlog ("[relay_outbound-route] [Max CPS:
$avp(trunkratelimit) Current CPS: $rl_count($rd)] Call to: $rU from:
$fU not ratelimited");
}
t_on_failure("dr_fo");
do_accounting("db", "cdr|missed");
rtpengine_manage();
if (!t_relay()) {
xlog("[relay-route] ERROR: Unable to relay");
send_reply("500","Internal Error");
exit;
}
}
--
Richard Robson
Greenlight Support
01382 843843
[email protected]
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