[SR-Users] Can't connect to db

[Andrew Chen]

Hi all,
I just installed kamailio 5.2.4 on two separate aws instances in two
separate regions.  Both regions uses the same configuration template and
share the same db in AWS RDS.  The issue I see is this:
- SJO location was able to launch fine without any issues.
- ASH location could not start up kamailio process due to db connection
failure:

Sep 10 21:24:13 ashmainkama51 /usr/sbin/kamailio[8043]: ERROR: db_mysql
[km_my_con.c:139]: db_mysql_new_connection(): driver error: Too many
connections

Sep 10 21:24:13 ashmainkama51 /usr/sbin/kamailio[8043]: ERROR: <core>
[db.c:319]: db_do_init2(): could not add connection to the pool

Sep 10 21:24:13 ashmainkama51 /usr/sbin/kamailio[8045]: ERROR: db_mysql
[km_my_con.c:139]: db_mysql_new_connection(): driver error: Too many
connections

Sep 10 21:24:13 ashmainkama51 /usr/sbin/kamailio[8045]: ERROR: <core>
[db.c:319]: db_do_init2(): could not add connection to the pool

Sep 10 21:24:13 ashmainkama51 /usr/sbin/kamailio[8045]: ERROR: carrierroute
[db_carrierroute.c:141]: carrierroute_db_open(): can't connect to database.

Sep 10 21:24:13 ashmainkama51 /usr/sbin/kamailio[8045]: ERROR: <core>
[core/sr_module.c:847]: init_mod_child(): error while initializing module
carrierroute (/usr/lib/x86_64-linux-gnu/kamailio/modules/carrierroute.so)
(idx: 30 rank: 18 desc: [tcp receiver (generic) child=9])

- In ASH instance, I can manually mysql to the RDS host using the
credentials in the config file.
- I checked db user permissions and it's opened for the subnet in our ASH
location (which is also proven using manual connection).

So I don't get why one works and the other doesn't

Thoughts?

-- 
Andy Chen
Sr. Telephony Lead Engineer

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