SER (SIP Express Router) is sometimes a bit problematic. There are some methods to detect the problems.
1. If the SER server does not start correctly we can look at the following file to look for errors
/var/log/messages
In this file appears information about errors and warning when the SER server starts or tries to start
Another way is to start the SER server with "#/usr/local/sbin/ser -c" instead of "# /usr/local/serctl start" . This way we could see the messages at the screen or command line.
2. If the SER server starts but we want to monitor it we can execute the command
/usr/local/sbin/serctl moni
3. If the ser_mysql.sh script does not work verify that the mysql client is installed in a proper way.
Some common errors and the possible solution:
Problem
Solution
Starting SER : PID file /var/run/ser.pid does not exist -- SER start failed
When starting the server with /usr/local/sbin/serctl start
Look at /var/log/messages because is a common failed error
ser: ERROR: load_module: could not open module </usr/local/lib/ser/modules/mysql.so>: libmysqlclient.so.15: cannot open shared object file: No such file or directory
At the file /var/log/messages
It is a bit strange but it can be solve. I solve it this way (perhaps is not the better one). A library is missing but perhaps we have a superior or inferior one: Find it at /usr/lib and then we can do for example
# ln -s libmysqlclient.so.14 libmysqlclient.so.15
new connection(): Can´t connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
At the file /var/log/messages
Happens when mysql.sock is not at that folder It can be at /tmp/ You can solve it doing a virtual link
# ln -s /tmp/mysql.sock /var/lib/mysql/mysql.sock
submit_query(): Unknown column 'table version' in field list'
At the file /var/log/messages
Incompatibiitly between 0.8.X and 0.9.x. A table field has been changed We are executing 0.9.x version with 0.8.x database version
Solution: re-execute ser_mysql.sh script of 0.9.x version
ALERT: Backup the database previously.
/usr/local/sbin/ser_mysql.sh: line 160: gen_ha1: command not found HA1 calculation failed
When executing /usr/local/sbin/ser_mysql.sh create
Appear when we are not root. Sudo is not enough. We must be logged as root. If we do that the problem disappears.
* Warning: no fifo_db_url given - fifo DB commands disabled
At the file /var/log/messages
It is just a warning. We can do nothing. Or doing the following:
