[OpenSIPS-Users] 3.0.1 Full sharing registrar - mysql write back not working

Callum Guy callum.guy at x-on.co.uk
Wed Nov 6 10:10:22 EST 2019


Hi All,

I've been testing a new cluster based registrar config and noticed that the
location records weren't being written back to the database.

The issue appears resolved when I switch usrloc.restart_persistency from
"sync-from-cluster" to "load-from-sql". This is acceptable however it seems
more correct to allow clusterer to sync the data for me.

modparam("usrloc", "location_cluster", 25)
modparam("usrloc", "cluster_mode", "full-sharing")
modparam("usrloc", "pinging_mode", "ownership")
modparam("usrloc", "restart_persistency", "*sync-from-cluster*")
modparam("usrloc", "sql_write_mode", "write-back")
modparam("usrloc", "timer_interval", 60)
modparam("usrloc", "skip_replicated_db_ops", 1)
modparam("usrloc", "max_contact_delete", 25)
modparam("usrloc", "hash_size", 16)
modparam("usrloc", "nat_bflag", "NATTED_CONTACT")
modparam("usrloc", "use_domain", 1)
modparam("usrloc", "db_url", "mysql://user:abc@192.168.151.20/opensips")

I have attempted several variations including
removing skip_replicated_db_ops and changing sql_write_mode however nothing
resolved the issue. The contacts were visible within the cluster (mi
ul_dump) but I couldn't get them to sync back to the database at all.

My target implementation is to have a pair of instances, sharing a VIP
(keepalived), such that when a node is terminated the clusterer module has
preshared all the data and registrations and dialogs do not drop. I have
configuration for the dialog and clusterer module which I would be happy to
share if required. I would be very interested to hear if I am doing
something wrong or misunderstanding how it should work!

Many thanks,

Callum

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