[OpenSIPS-Users] Usrloc Cluster

[Callum Guy]

Hi All,

I'm running a full sharing cluster for hot standby purposes and have been
noticing that the backup node will periodically report the messages below.

INFO:usrloc:receive_ucontact_insert: failed to fetch local urecord -
creating new one (ci: '0_751733367 at 10.0.0.13')
INFO:usrloc:receive_ucontact_update: failed to fetch local urecord - create
new record and contact (ci: '0_3576574827 at 10.0.0.26')
INFO:usrloc:receive_ucontact_update: failed to fetch local urecord - create
new record and contact (ci: '0_4169036315 at 10.0.0.12')

Is this a simple matter of sessions timing out on the backup and being
removed before the next registration on the primary instance?

Secondly I am graphing registration counts based on the following CLI
request:

opensips-cli -x mi ul_dump brief=1 | grep AOR | wc -l

Several times a day I see a small drop in the backup registrations
(lighter red line) before a resync operation as shown here:

[image: image.png]

Can anyone help to explain what's going on here? There aren't any log
messages at this time however I do see the backup node reporting a primary
node ping loss ~1 hour before the dip:

2020-02-18T11:38:37.786021+00:00 opensips[91789]:
INFO:clusterer:do_action_trans_2: Ping reply not received, node [13] is down
2020-02-18T11:38:38.795838+00:00 opensips[91804]:
INFO:clusterer:handle_internal_msg: Node [13] is UP

There shouldn't have been any loss of connectivity at that time so I'm at a
loss to explain the communication failure.

I'm running 3.0.0 on these systems so if relevant patches have been applied
on 3.0.2 please let me know and I'll plan the upgrade.

Callum

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