[OpenSIPS-Users] Load Balancer - Delay in clearing dialogs
Bogdan-Andrei Iancu
bogdan at opensips.org
Wed Aug 17 11:45:24 CEST 2016
Hi Chandan,
Could you check what is the status of the calls (see the "State" field)
? I guess the call are listed in state 5 (terminated) - and this is the
reason why you do not see them as counted by LB.
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com
On 16.08.2016 12:47, Chandan PR wrote:
> Hi Guys,
>
> Opendsips Version : 1.9.x
>
> We have configured the load balancer with 8 ports.
>
> When the calls are ongoing, the lb_list shows the load balancer is
> running full.
>
> root at Dev-Chandan-Opensips-LB:/usr/local/opensips/sbin# ./opensipsctl
> fifo lb_list
> Destination:: sip:192.168.248.62:5060 <http://192.168.248.62:5060>
> id=152 group=1 enabled=yes auto-re=on
> Resource:: channel max=4 load=4
> Destination:: sip:192.168.248.64:5060 <http://192.168.248.64:5060>
> id=153 group=1 enabled=yes auto-re=on
> Resource:: channel max=4 load=4
>
> When I check the dialog_list, I see some older dialogs which are yet
> to be cleared.
>
> root at Dev-Chandan-Opensips-LB:/usr/local/opensips/sbin# ./opensipsctl
> fifo dlg_list | grep "callid"
> callid:: 14713396610041471339775929_ZTLT_931
> callid:: 14713396610151471339775929_ZTLT_937
> callid:: 14713396610221471339775929_ZTLT_942
> callid:: 14713396610081471339775929_ZTLT_933
> callid:: 14713396610181471339775929_ZTLT_939
> callid:: 14713396610191471339775929_ZTLT_940
> callid:: 14713396610131471339775929_ZTLT_936
> callid:: 14713396610031471339775929_ZTLT_930
> callid:: 14713396610061471339775929_ZTLT_932
> callid:: 14713396610161471339775929_ZTLT_938
> callid:: 14713396610271471339775929_ZTLT_945
> callid:: 14713396610371471339775929_ZTLT_951
> callid:: 14713396610101471339775929_ZTLT_934
> callid:: 14713396610311471339775929_ZTLT_947
> callid:: 14713396610211471339775929_ZTLT_941
> callid:: 14713396610241471339775929_ZTLT_943
> callid:: 14713396610341471339775929_ZTLT_949
> callid:: 14713396610011471339775929_ZTLT_929
> callid:: 14713396610111471339775929_ZTLT_935
> root at Dev-Chandan-Opensips-LB:/usr/local/opensips/sbin# ./opensipsctl
> fifo dlg_list | grep "callid" | wc -l
> 13
> root at Dev-Chandan-Opensips-LB:/usr/local/opensips/sbin#
>
> *Even when the lb_list shows the load as 0, I see some dialogs present
> and getting cleared after around 10-12 seconds.*
>
> What would be the impact of this delay in clearing the dialogs? Can
> this lead to lot many calls rejected with "Destination Full" (We are
> experiencing this issue in our production, where a huge number of
> calls rejected)?
>
> Is there any way to reduce this delay or clear the dialogs immediately?
>
> *_Dialog Module Settings:_*
> #### DIALOG module
> loadmodule "dialog.so"
> modparam("dialog", "dlg_match_mode", 1)
> modparam("dialog", "default_timeout", 21600) # 6 hours timeout
> modparam("dialog", "db_mode", 2)
> modparam("dialog", "db_url",
> "mysql://opensips:opensipsrw@localhost/opensips") #
>
>
> *_Load Balancer Script:_*
> #
> # $Id: opensips_loadbalancer.m4 9723 2013-02-01 15:10:50Z bogdan_iancu $
> #
> # OpenSIPS loadbalancer script
> # by OpenSIPS Solutions <team at opensips-solutions.com
> <mailto:team at opensips-solutions.com>>
> #
> # This script was generated via "make menuconfig", from
> # the "Load Balancer" scenario.
> # You can enable / disable more features / functionalities by
> # re-generating the scenario with different options.
> #
> # Please refer to the Core CookBook at:
> # http://www.opensips.org/Resources/DocsCookbooks
> # for a explanation of possible statements, functions and parameters.
> #
>
>
> ####### Global Parameters #########
>
> debug=3
> log_stderror=no
> log_facility=LOG_LOCAL1
>
> fork=yes
> children=4
>
> /* uncomment the following lines to enable debugging */
> #debug=6
> #fork=no
> #log_stderror=yes
>
> /* uncomment the next line to enable the auto temporary blacklisting of
> not available destinations (default disabled) */
> #disable_dns_blacklist=no
>
> /* uncomment the next line to enable IPv6 lookup after IPv4 dns
> lookup failures (default disabled) */
> #dns_try_ipv6=yes
>
> /* comment the next line to enable the auto discovery of local aliases
> based on revers DNS on IPs */
> auto_aliases=no
>
>
> listen=udp:192.168.248.111:5060 <http://192.168.248.111:5060> #
> CUSTOMIZE ME
>
> disable_tcp=no
> listen=tcp:192.168.248.111:5060 <http://192.168.248.111:5060> #
> CUSTOMIZE ME
>
> disable_tls=yes
>
>
>
>
> ####### Modules Section ########
>
> #set module path
> mpath="/usr/local/opensips/lib64/opensips/modules/"
>
>
>
> #### SIGNALING module
> loadmodule "signaling.so"
>
> #### StateLess module
> loadmodule "sl.so"
>
> #### Transaction Module
> loadmodule "tm.so"
> modparam("tm", "fr_timer", 30)
> modparam("tm", "fr_inv_timer", 120)
> modparam("tm", "restart_fr_on_each_reply", 0)
> modparam("tm", "onreply_avp_mode", 1)
>
> #### Record Route Module
> loadmodule "rr.so"
> /* do not append from tag to the RR (no need for this script) */
> modparam("rr", "append_fromtag", 0)
>
> #### MAX ForWarD module
> loadmodule "maxfwd.so"
>
> #### SIP MSG OPerationS module
> loadmodule "sipmsgops.so"
>
> #### FIFO Management Interface
> loadmodule "mi_fifo.so"
> modparam("mi_fifo", "fifo_name", "/tmp/opensips_fifo")
> modparam("mi_fifo", "fifo_mode", 0666)
>
> #### URI module
> loadmodule "uri.so"
> modparam("uri", "use_uri_table", 0)
>
> #### MYSQL module
> loadmodule "db_mysql.so"
>
> #### AVPOPS module
> loadmodule "avpops.so"
>
> #### ACCounting module
> loadmodule "acc.so"
> /* what special events should be accounted ? */
> modparam("acc", "early_media", 0)
> modparam("acc", "report_cancels", 0)
> /* by default we do not adjust the direct of the sequential requests.
> if you enable this parameter, be sure the enable "append_fromtag"
> in "rr" module */
> modparam("acc", "detect_direction", 0)
> modparam("acc", "failed_transaction_flag", "ACC_FAILED")
> /* account triggers (flags) */
> modparam("acc", "log_flag", "ACC_DO")
> modparam("acc", "log_missed_flag", "ACC_MISSED")
>
>
> #### DIALOG module
> loadmodule "dialog.so"
> modparam("dialog", "dlg_match_mode", 1)
> modparam("dialog", "default_timeout", 21600) # 6 hours timeout
> modparam("dialog", "db_mode", 2)
> modparam("dialog", "db_url",
> "mysql://opensips:opensipsrw@localhost/opensips") # CUSTOMIZE ME
>
>
> #### LOAD BALANCER module
> loadmodule "load_balancer.so"
> modparam("load_balancer", "db_url",
> "mysql://opensips:opensipsrw@localhost/opensips") # CUSTOMIZE ME
> modparam("load_balancer", "probing_method", "OPTIONS")
>
> modparam("load_balancer", "probing_interval", 15)
>
>
>
>
>
> ####### Routing Logic ########
>
>
> # main request routing logic
> route{
> if (!mf_process_maxfwd_header("3")) {
> send_reply("483","looping");
> exit;
> }
>
>
> if ( has_totag() ) {
> # sequential request -> obey Route indication
> xlog("Loose Route for $avp(iurl) over $avp(dest) $avp(calltype) \n");
> loose_route();
> t_relay();
> exit;
> }
>
> # handle cancel and re-transmissions
> if ( is_method("CANCEL") ) {
> if ( t_check_trans() )
> t_relay();
> exit;
> }
>
>
> # from now on we have only the initial requests
> if (!is_method("INVITE")) {
> send_reply("405","Method Not Allowed");
> exit;
> }
>
> # initial request
> record_route();
> $avp(iurl) = $(hdr(P-Nuance-Initial-URL));
> $avp(calltype) = $(hdr(P-Nuance-Call-Type));
> xlog("Sending call $fu $avp(iurl) $avp(calltype) \n");
> xlog("Current Dialogs count $DLG_count \n");
> # LB function returns negative if no suitable destination (for
> requested resources) is found,
> # or if all destinations are full
> if ( !load_balance("1","channel") ) {
> xlog("All Destinations are full. Sending 500! $fu
> $(hdr(P-Nuance-Initial-URL)) CURRENT DIALOGS $DLG_count \n");
> send_reply("500","Service full");
> exit;
> }
> $avp(dest) = $du;
> xlog("Call sent over $avp(dest) $fu $(hdr(P-Nuance-Initial-URL))\n");
> t_on_reply("test");
> # arm a failure route for be able to catch a failure event and
> to do
> # failover to the next available destination
> t_on_failure("LB_failed");
>
> # send it out
> if (!t_relay()) {
> sl_reply_error();
> }
>
> }
>
> #onreply_route {
> #xlog("OpenSIPS received a reply $avp(iurl) rs= $rs | fu= $fu | si=
> $si | Ri= $Ri ===");
> #}
>
> onreply_route[test] {
> xlog("Reply $rs received from $si for the call $avp(iurl)");
> }
>
> failure_route[LB_failed]
> {
> # skip if call was canceled
> if (t_was_cancelled()) {
> exit;
> }
> xlog("Call $avp(iurl) sent over $avp(dest) failed with code
> $T_reply_code\n");
> # Checking only for Destination Failure
> # If the destination is failed, disable it and reroute the call
> #if ( t_check_status("[56][0-9][0-9]")) {
> if ( t_check_status("503")) {
> # this is a case for failover
> xlog("Marking $avp(dest) disabled as it failed for
> call $avp(iurl) with code $T_reply_code\n");
> #xlog("call $avp(iurl) failed with code $T_reply_code
> from $avp(dest)\n");
> # mark failed destination as disabled
> lb_disable();
> # try to re-route to next available destination
> #if ( !load_balance("1","channel") ) {
> # xlog("RETRY FAILED SENDING 500");
> # send_reply("500","Service Full");
> # exit;
> #}
> #xlog("REPORT: re-routing call to $du \n");
> #t_relay();
> }
> send_reply("$T_reply_code","Call Failed");
> }
>
>
> Regards,
> Chandan
>
>
> _______________________________________________
> Users mailing list
> Users at lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
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