Hello!

We noticed today an issue with the kamailio loadbalancing.

Basically kamailio is not considering if an host is up or not, backends are set always as "FLAGS: AP" even if the host is down.

I see this when the proxy starts :

ERROR: dispatcher [dispatcher.c:768]: ds_warn_fixup(): failover functions used, but required AVP parameters are NULL -- feature disabled

These the parameters I have set:

# ----- dispatcher params -----

modparam("dispatcher", "list_file", "/etc/kamailio/dispatcher.list")

modparam("dispatcher", "dst_avp", "$avp(dsdst)")

modparam("dispatcher", "grp_avp", "$avp(dsgrp)")

modparam("dispatcher", "cnt_avp", "$avp(dscnt)")

modparam("dispatcher", "ds_ping_method", "OPTIONS")

modparam("dispatcher", "ds_ping_reply_codes", "class=2;class=3;code=404")

modparam("dispatcher", "ds_ping_from", "sip:proxy@sip.nexmo.com")

modparam("dispatcher", "ds_ping_interval", 20)

modparam("dispatcher", "ds_probing_threshold", 1)

modparam("dispatcher", "ds_probing_mode", 1)

modparam("dispatcher", "ds_hash_size", 10)

modparam("dispatcher", "ds_hash_expire", 3600)

modparam("dispatcher", "ds_hash_initexpire", 60)

modparam("dispatcher", "ds_hash_check_interval", 10)

modparam("dispatcher", "use_default", 0)

modparam("dispatcher", "attrs_pvname", "$avp(carrierattr)")

modparam("dispatcher", "setid_pvname", "$avp(carriergroup)")

modparam("dispatcher", "flags", 2)

I use 4.3.3, I think this issue started after upgrading from 4.3.1 but I can't say for sure.

Can someone please give us some advices on this?

Thanks

Alessio

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