[Serusers] Running SER in chroot and separating SER with serweb

[zeusng]

Having playing with for 2 weeks, I get the SER running as I want. The next
things I am trying are:

1. Run SER in chroot mode with MySQL
2. Separate SER and serweb on two servers.

With 1, I have a partially successful config. When I can start SER with
/usr/sbin/ser -u ser -g ser -t /var/ser, I got
A. positive result if the DB connection string is
"sql://ser:heslo@127.0.0.1/ser". 

B. However, if I use the DB connection string as,
"sql://ser:heslo@localhost/ser", I got the following error message:

Feb 16 19:46:09 sip /usr/sbin/ser[2452]: connect_db(): Can't connect to
local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

Fair enough, coz SER is in a chroot environment and cannot stat the MySQL
UNIX socket. There is no /var/ser/var/lib/mysql/mysql.sock. But, what is the
difference between localhost and 127.0.0.1 here? Both should resolve back to
127.0.0.1, right? Why one use UNIX socket and the other use DOMAIN socket?
Also, should SER open the DB connection before chrooting itself?

Also, when running in chroot mode, SER cannot use DNS to resolve hostname. I
get the following errors:

Feb 16 20:19:03 sip /usr/sbin/ser[2873]: INFO: fifo process starting: 2873 
Feb 16 20:19:03 sip /usr/sbin/ser[2873]: SER: open_uac_fifo: fifo server up
at /
tmp/ser_fifo... 
Feb 16 21:01:13 sip /usr/sbin/ser[2867]: ERROR: mk_proxy: could not resolve
host
name: "iptel.org" 
Feb 16 21:01:13 sip /usr/sbin/ser[2867]: ERROR: uri2proxy: bad host name in
URI 
<sip:gcc008 at iptel.org> 
Feb 16 21:01:13 sip /usr/sbin/ser[2867]: ERROR: t_forward_nonack: failure to
add
 branches 
Feb 16 21:02:09 sip /usr/sbin/ser[2867]: ERROR: mk_proxy: could not resolve
host
name: "iptel.org" 
Feb 16 21:02:09 sip /usr/sbin/ser[2867]: ERROR: uri2proxy: bad host name in
URI 
<sip:gcc008 at iptel.org> 

This is a result of doing INVITE sip:abcdefg at iptel.org SIP/2.0 from my
domain. If I put an entry into my chrooted /var/ser/etc/hosts, the request
goes fine. Is it because of my chroot environment (later in the mail) or I
have to compile SER in static mode? 


2. Have anyone successfully put SER and serweb on different boxes? There is
no problem connecting to the DB. However, I'm not sure about the
/tmp/ser_fifo part. I'm not a programmer and can only manage to understand
php code, no programming. How do I work around the /tmp/ser_fifo when it is
on another server?


Chroot environment:

[root]# ls -lR /var/ser                                                 
/var/ser:
total 16
drwxr-xr-x    2 root     root         4096 Feb 16 19:41 dev
drwxr-xr-x    3 root     root         4096 Feb 17 17:30 etc
drwxrwxrwx    2 root     root         4096 Feb 17 17:26 tmp

/var/ser/dev:
total 0
srw-rw-rw-    1 root     root            0 Feb 16 19:41 log
crw-rw-rw-    1 root     root       1,   3 Feb 11 11:44 null
crw-r--r--    1 root     root       1,   8 Feb 11 11:45 random
crw-rw-rw-    1 root     root       1,   5 Feb 11 15:16 zero

/var/ser/etc:
total 48
-rw-r--r--    1 root     root          210 Feb 16 21:08 hosts
-rw-r--r--    1 root     root          785 Feb 10 17:11 localtime
-rw-r--r--    1 root     root         5834 Jul  7  2001 protocols
-rw-r--r--    1 root     root           43 Feb 16 14:52 resolv.conf

/var/ser/tmp:
total 0
prw-rw----    1 ser      ser             0 Feb 17 17:26 ser_fifo

Chroot resolv.conf:
Nameserver 127.0.0.1

And yes, the DNS is running on localhost and happily serving request.


Any comment?