[OpenSIPS-Users] Issues running opensips with load balancer.

[Ravitez Ravi]

Hi All,

I’m trying to run opensips with load balancer module but it fails to come
up. Below are details of what I have done and been trying. My questions are
in *bold italics and highlighted in yellow*. Request you to take a look and
help.



*Objective:* Install OpenSIPS 1.11.10 with TLS on RHEL 6.5 for load
balancing SIP traffic

*Procedure followed:*

1.       Download and install OpenSIPS1.11.10 on RHEL 6.5 with default
configuration:

a.       Downloaded
http://opensips.org/pub/opensips/1.11.10/opensips-1.11.10-tls.tar.gz

b.      Un-tar and un-zip the downloaded file

c.       Go to opensips-1.11.10-tls folder, ran make menuconfig, select Compile
And Install OpenSIPS and followed by Exit & Save All Changes

d.      Run opensips on command line, ensure the opensips process is
running using ‘ps -ef | grep opensips’ command and stop the process
using ‘killall
opensips’



2.       Get necessary dependencies straightened out for load balancer as
mentioned in section 1.4 in
http://www.opensips.org/html/docs/modules/1.11.x/load_balancer.html

a.       The section lists the following OpenSIPS modules: i) *Dialog* –
Dialog module, ii) *Dialog* – TM module, iii) *database* – one of the DB
modules.

b.      I did not see any specific dialog module either in Configure
Compile Flags or Configure Excluded Modules, however, I could see
/usr/local/lib64/opensips/modules/dialog.so and assumed this is the
intended module. *Not sure if it covers both Dialog and TM. Please clarify.*

c.       I selected db_mysql from Configure Excluded Modules and got a
message “You have enabled the 'db_mysql' module, so please install '
development libraries of mysql-client , typically libmysqlclient-dev'”
while saving. I could not find the RPM for RHEL. The closed I could
find is libmysqlclient16-devel-5.1.69-1.w6.x86_64.rpm
which fails to get installed. *Am I in right path here? Please advise.*

d.      I was following an example mentioned section 3.2 in
http://www.opensips.org/Documentation/Tutorials-LoadBalancing.

The section shows following modules to be loaded:

loadmodule "modules/maxfwd/maxfwd.so"

loadmodule "modules/sl/sl.so"

loadmodule "modules/db_mysql/db_mysql.so"

loadmodule "modules/tm/tm.so"

loadmodule "modules/xlog/xlog.so"

loadmodule "modules/uri/uri.so"

loadmodule "modules/rr/rr.so"

loadmodule "modules/dialog/dialog.so"

loadmodule "modules/mi_fifo/mi_fifo.so"

loadmodule "modules/mi_xmlrpc/mi_xmlrpc.so"

loadmodule "modules/signaling/signaling.so"

loadmodule "modules/textops/textops.so"

loadmodule "modules/load_balancer/load_balancer.so"

However, the sub-directories mentioned in above list is not seen on my file
system after OpenSIPS installation, yet I see some of the above list shared
libraries under /usr/local/lib64/opensips/modules. *Hope this is ok.*

e.      The defaults opensips.cfg provided includes most of the above
listed modules, but the below libraries were missing which are needed for
load balancer:

            loadmodule "modules/dialog.so"

loadmodule "modules/textops.so"

loadmodule "modules/load_balancer/load_balancer.so"

loadmodule "modules/db_mysql/db_mysql.so"

loadmodule "modules/xlog/xlog.so"

loadmodule "modules/mi_xmlrpc/mi_xmlrpc.so

I was able to successfully start opensips after loading dialog.so and
textops.so, however, opensips refuses to start when I load
load_balancer.so with
following error:

May 13 16:40:18 kuat opensips: INFO:core:shm_mem_init: allocating SHM block

May 13 16:40:18 kuat opensips[22969]: NOTICE:core:main: version: opensips
1.11.10-tls (x86_64/linux)

May 13 16:40:18 kuat opensips[22969]: INFO:core:main: using 32 Mb shared
memory

May 13 16:40:18 kuat opensips[22969]: INFO:core:main: using 2 Mb private
memory per process

May 13 16:40:18 kuat opensips[22969]: INFO:core:evi_publish_event:
Registered event <E_CORE_THRESHOLD(0)>

May 13 16:40:18 kuat opensips[22969]: INFO:core:evi_publish_event:
Registered event <E_CORE_SHM_THRESHOLD(1)>

May 13 16:40:18 kuat opensips[22969]: INFO:core:evi_publish_event:
Registered event <E_CORE_PKG_THRESHOLD(2)>

May 13 16:40:18 kuat opensips[22969]: NOTICE:signaling:mod_init:
initializing module ...

May 13 16:40:18 kuat opensips[22969]: INFO:sl:mod_init: Initializing
StateLess engine

May 13 16:40:18 kuat opensips[22969]: INFO:tm:mod_init: TM - initializing...

May 13 16:40:18 kuat opensips[22969]: INFO:rr:mod_init: rr - initializing

May 13 16:40:18 kuat opensips[22969]: INFO:maxfwd:mod_init: initializing...

May 13 16:40:18 kuat opensips[22969]: INFO:sipmsgops:mod_init:
initializing...

May 13 16:40:18 kuat opensips[22969]: INFO:usrloc:ul_init_locks: locks
array size 512

May 13 16:40:18 kuat opensips[22969]: INFO:core:evi_publish_event:
Registered event <E_UL_AOR_INSERT(3)>

May 13 16:40:18 kuat opensips[22969]: INFO:core:evi_publish_event:
Registered event <E_UL_AOR_DELETE(4)>

May 13 16:40:18 kuat opensips[22969]: INFO:registrar:mod_init:
initializing...

May 13 16:40:18 kuat opensips[22969]: INFO:acc:mod_init: initializing...

May 13 16:40:18 kuat opensips[22969]: INFO:core:evi_publish_event:
Registered event <E_ACC_EVENT(5)>

May 13 16:40:18 kuat opensips[22969]: INFO:core:evi_publish_event:
Registered event <E_ACC_CDR(6)>

May 13 16:40:18 kuat opensips[22969]: INFO:core:evi_publish_event:
Registered event <E_ACC_MISSED_EVENT(7)>

May 13 16:40:18 kuat opensips[22969]: INFO:dialog:mod_init: Dialog module -
initializing

May 13 16:40:18 kuat opensips[22969]: INFO:textops:mod_init: initializing...

May 13 16:40:18 kuat opensips[22969]: INFO:load_balancer:mod_init:
Load-Balancer module - initializing

*May 13 16:40:18 kuat opensips[22969]: ERROR:load_balancer:mod_init: DB URL
is not defined!*

*May 13 16:40:18 kuat opensips[22969]: ERROR:core:init_mod: failed to
initialize module load_balancer*

*May 13 16:40:18 kuat opensips[22969]: ERROR:core:main: error while
initializing modules*

May 13 16:40:18 kuat opensips[22969]: INFO:core:cleanup: cleanup

May 13 16:40:18 kuat opensips: INFO:core:daemonize: pre-daemon process
exiting with -1

*Looks like this is due to DB module. Is this correct?*

f.        I do not see following shared libraries. *Please let me know
which modules should I load to get them.*

loadmodule "modules/db_mysql/db_mysql.so"

loadmodule "modules/xlog/xlog.so"

loadmodule "modules/mi_xmlrpc/mi_xmlrpc.so"


Thank you :)


Regards,

Ravitez.D
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