[SR-Users] Can't connect to local MySQL server (13 "Permission denied")

[Ginhoux, Patrick]

Hi,

 

In a previous post ([SR-Users] Questions about changes between 5.0.1 and
5.0.7
<https://lists.kamailio.org/pipermail/sr-users/2018-August/102442.html> ), I
reported problem to upgrade my kamailio from 5.0.1 to 5.0.7-7 level.

With help from some people, it was finally fixed on my test server in my
lab.

 

Now I was expecting to do the same upgrade on a real server using these
packages:

kamailio-5.0.7-7.el7.x86_64.rpm

kamailio-ims-5.0.7-7.el7.x86_64.rpm

kamailio-mysql-5.0.7-7.el7.x86_64.rpm

kamailio-perl-5.0.7-7.el7.x86_64.rpm

kamailio-snmpstats-5.0.7-7.el7.x86_64.rpm

 

But kamailio failed to connect the local MySQL server :

 

Aug 31 08:16:20 in52inmvt2router1-mvt-tpm-sipr /usr/sbin/kamailio[6365]:
DEBUG: <core> [db.c:209]: db_bind_mod(): using db bind api for db_mysql

Aug 31 08:16:20 in52inmvt2router1-mvt-tpm-sipr /usr/sbin/kamailio[6365]:
DEBUG: <core> [db.c:314]: db_do_init2(): connection 0x7fef779958f8 not found
in pool

Aug 31 08:16:20 in52inmvt2router1-mvt-tpm-sipr /usr/sbin/kamailio[6365]:
DEBUG: db_mysql [km_my_con.c:98]: db_mysql_new_connection(): opening
connection: mysql://xxxx:xxxx@localhost/siprouter

Aug 31 08:16:20 in52inmvt2router1-mvt-tpm-sipr /usr/sbin/kamailio[6365]:
ERROR: db_mysql [km_my_con.c:129]: db_mysql_new_connection(): driver error:
Can't connect to local MySQL server through socket
'/var/lib/mysql/mysql.sock' (13 "Permission denied")

Aug 31 08:16:20 in52inmvt2router1-mvt-tpm-sipr /usr/sbin/kamailio[6365]:
ERROR: <core> [db.c:318]: db_do_init2(): could not add connection to the
pool

Aug 31 08:16:20 in52inmvt2router1-mvt-tpm-sipr /usr/sbin/kamailio[6365]:
ERROR: htable [ht_db.c:92]: ht_db_open_con(): failed to connect to the
database

Aug 31 08:16:20 in52inmvt2router1-mvt-tpm-sipr /usr/sbin/kamailio[6365]:
ERROR: <core> [core/sr_module.c:974]: init_mod(): Error while initializing
module htable (/usr/lib64/kamailio/modules/htable.so)

 

My "kamailio.cfg" contains the following command:

 

modparam("htable", "db_url",
"mysql://siprouter:password@localhost/siprouter") 

 

The service unit : "/usr/lib/systemd/system/kamailio.service" content is :

 

[Unit]

Description=Kamailio (OpenSER) - the Open Source SIP Server

After=network.target mysql.service

 

[Service]

Type=simple

User=kamailio

Group=kamailio

Environment='CFGFILE=/etc/kamailio/kamailio.cfg'

Environment='SHM_MEMORY=1024'

Environment='PKG_MEMORY=8'

EnvironmentFile=-/etc/sysconfig/kamailio

ExecStart=/usr/sbin/kamailio -DD -P /var/run/kamailio/kamailio.pid -f
$CFGFILE -m $SHM_MEMORY -M $PKG_MEMORY

Restart=on-failure

 

[Install]

WantedBy=multi-user.target

 

The "/etc/sysconfig/kamailio" content is :

 

#

# Kamailio startup options

#

 

#

# Kamailio startup options

#

 

# Set to yes to enable kamailio, once configured properly.

RUN_KAMAILIO=yes

 

# User to run as

USER=kamailio

 

# Group to run as

GROUP=kamailio

 

# Amount of shared memory to allocate for the running Kamailio server (in
Mb)

SHM_MEMORY=1024

 

# Amount of per-process (package) memory to allocate for Kamailio (in Mb)

PKG_MEMORY=8

 

Below the existing user in mysql :

 

mysql:root:(none)> use mysql;

Database changed

mysql:root:mysql> select user,host from user;

+-----------+-----------+

| user      | host      |

+-----------+-----------+

| myadmin   | %         |

| siprouter | %         |

| kamailio  | localhost |

| root      | localhost |

+-----------+-----------+

I have a symlink to locate the my.cnf : ln -s /myqdata/mysiprdb/data/my.cnf
/etc/my.cnf

And also this link to fix a htable reload problem : ln -s
/myqdata/mysiprdb/data/mysiprdb.sock /var/lib/mysql/mysql.sock

 

I don't find what the problem is this time.

 

So if there is people that could help on the issue, thanks in advance.

 

Cordialement.

Patrick GINHOUX 

 

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