6 Feb
2017
6 Feb
'17
10:22 a.m.
Hello Charles,
2 of them were active during network failure time period and at the time of
reconnection.
As the issue were noticed on Production environment i don't have enough
logs to report you but i have reproduced the issue on my Lab environment
that has exactly the same DMQ configurations, except the number of dmq
hosts that are 3 instead of 4.
Steps to reproduce the issue:
Start all 3 kamailio nodes.
at this stage all of them are active in dmq.list_nodes.
Server A
{
host: 172.112.10.243
port: 5060
resolved_ip: 172.112.10.243
status: 2
last_notification: 0
local: 0
}
{
host: 172.112.10.246
port: 5060
resolved_ip: 172.112.10.246
status: 2
last_notification: 0
local: 0
}
{
host: 172.112.10.207
port: 5060
resolved_ip: 172.112.10.207
status: 2
last_notification: 0
local: 0
}
{
host: 172.112.10.206
port: 5060
resolved_ip: 172.112.10.206
status: 2
last_notification: 0
local: 1
}
Server B
{
host: 172.112.10.243
port: 5060
resolved_ip: 172.112.10.243
status: 2
last_notification: 0
local: 0
}
{
host: 172.112.10.206
port: 5060
resolved_ip: 172.112.10.206
status: 2
last_notification: 0
local: 0
}
{
host: 172.112.10.207
port: 5060
resolved_ip: 172.112.10.207
status: 2
last_notification: 0
local: 1
}
Server C
{
host: 172.112.10.246
port: 5060
resolved_ip: 172.112.10.246
status: 2
last_notification: 0
local: 0
}
{
host: 172.112.10.207
port: 5060
resolved_ip: 172.112.10.207
status: 2
last_notification: 0
local: 0
}
{
host: 172.112.10.206
port: 5060
resolved_ip: 172.112.10.206
status: 2
last_notification: 0
local: 0
}
{
host: 172.112.10.243
port: 5060
resolved_ip: 172.112.10.243
status: 2
last_notification: 0
local: 1
}
Then, after few minutes i inserted an IPTABLES rule on server C to drop all
packages to 5060 port.
After that the Server A and Server B can see each other:
{
host: 172.112.10.206
port: 5060
resolved_ip: 172.112.10.206
status: 2
last_notification: 0
local: 0
}
{
host: 172.112.10.207
port: 5060
resolved_ip: 172.112.10.207
status: 2
last_notification: 0
local: 1
}
Server B only can see itself:
{
host: 172.112.10.243
port: 5060
resolved_ip: 172.112.10.243
status: 2
last_notification: 0
local: 1
}
This behavior keeps the same after the network connectivity comes up.
Please find out the log files attached on this email for each server.
Server A - 172.112.10.206
Server B - 172.112.10.207
Server C- 172.112.10.243
Let me know if do you need further information.
Regards
José
2017-02-06 14:04 GMT+00:00 Charles Chance <charles.chance(a)sipcentric.com>om>:
Hello,
DMQ will remove nodes from its internal list if they fail to respond to
its pings - with the exception of the original notification peer
specified in config. This way, if the network connection is lost, DMQ will
continue to try the original peer indefinitely until connectivity is
restored, and rebuild its list of other nodes from there.
Was the original peer (or one of them if multiple defined A/SRV records)
still active at the time of reconnection?
It would help to diagnose if you can you send your log from around the
time of disconnection, and also at the time of reconnect.
Regards,
Charles
On 6 February 2017 at 10:03, José Seabra <joseseabra4(a)gmail.com> wrote:
--
Cumprimentos
José Seabra
Hello Daniel,
The parameters that i have configured on my kamailio server are:
#!ifdef ENABLE_REG_SYNC
modparam("registrar", "sock_flag", 18)
modparam("registrar", "sock_hdr_name", "Sock-Info")
####### SIP registrar replication to other nodes ######
loadmodule "dmq.so"
####### distributed message queue module paramenters #####
modparam("dmq", "server_address",
"sip:MY_IP_ADDRESS:MY_PORT_ADDRESS")
modparam("dmq", "notification_address", "DMQ_HOSTS")
modparam("dmq", "multi_notify", 1)
modparam("dmq", "num_workers", 4)
loadmodule "dmq_usrloc.so"
modparam("dmq_usrloc", "enable", 1)
modparam("dmq_usrloc", "sync", 1)
modparam("dmq_usrloc", "batch_size", DMQ_BATCH_SIZE)
modparam("dmq_usrloc", "batch_usleep", DMQ_BATCH_USLEEP)
#!endif
Let me know if do you need further information's.
Thank you
Regards
José Seabra
2017-02-06 7:01 GMT+00:00 Daniel-Constantin Mierla <miconda(a)gmail.com>om>:
Sipcentric Ltd. Company registered in England & Wales no. 7365592. Registered
office: Faraday Wharf, Innovation Birmingham Campus, Holt Street,
Birmingham Science Park, Birmingham B7 4BB.
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Hello,
what are the parameters for dmq module?
Cheers,
Daniel
On 01/02/2017 11:32, José Seabra wrote:
Hello there,
My DMQ cluster has 4 nodes and by some reason 2 of them lost the
network connectivity for long time(~ 4 hours), after the network of these 2
nodes come back they didn't get connected on DMQ cluster automatically, i
had to restart kamailio to get them again on DMQ list.
My doubts here are:
- Is this an expected behavior of DMQ module?
- Is there any way of put them again on DMQ bus without need restart
kamailio?
Thank you
Best Regards
José Seabra
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--
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Kamailio Advanced Training - Mar 6-8 (Europe) and Mar 20-22 (USA) - www.asipto.com
Kamailio World Conference - May 8-10, 2017 - www.kamailioworld.com
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José Seabra
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