PHP + YII + DBLIB + MSSQL + CentOS = SQLSTATE[HY000] Unable to connect: Adaptive Server is unavailable or does not exist (severity 9) How to fix?

Question

Yii

The actual error is CDbConnection failed to open the DB connection: SQLSTATE[HY000] Unable to connect: Adaptive Server is unavailable or does not exist (severity 9) when connecting to the database.

'db'=>array(
'connectionString' =>"dblib:dbname=JobBase;host=egServer70",
'charset' => 'utf8',
'username' => 'test',
'password' => 'test' ,
'enableProfiling' => true,
'enableParamLogging' => true,
),

freetds.conf

[egServer70]
host=server.ru
port=1433
tds version=8.0
client charset=UTF-8

Everything seems to be fine, on 2 servers that I raised half a year ago everything is fine. All that has changed is PHP 5.5 on the old and PHP 5.6 on the new (doesn't work). And another OS version, was CentOS 6.5 became CentOS 6.6.
And through tsql it is perfectly connected.
iptables is off

Answer 1

It turned out the whole thing was SELinux, turned it off and everything became normal