Installation the Lync 2010 Server is easy as next, next, next (almost).

But if it is a journey thru hell for you, and you are installing the Lync server on Virtual Machine – you need to check two things:

• Is your windows server 2008 R2 a debug version? (Right click Computer, Properties, if you find „debug” there – you need to switch the OS.)
• Is your instalation performing on Domain Controler?

You need to answer NO in BOTH cases. So – install valid system (release not debug), and do not try to install the Lync server on the Domain Controller.

If you answered Yes on one or both questions you will probably have errors:

• Cant install SQL Express 2008 R2 because of strange errors
• Cant install SQLInstanceRtc in Lync
• Cant publish topology
• etc, strange errors

After selecting the right OS version, go with the flow. First of all you need the Domain Controler machine (and you cant install the Lync There), then you need to have another windows server (and there you can install the Lync).

In my case the scenario is:

Machine A: Windows 2008 Server R2 – The Domain Controller

Machine B: Windows 2008 Server R2 – The Lync Server

Machine A and B has to have the static IPs.

On the A machine – install role Active Directory Service.

On the B machine – you need to install the .NET Framework 3.5.1 Features (by using Add Feature), then just start the installation of Lync 2010 Server.

Usefull links:

• Lync 2010 Step-by-step instalation tutorial
• MSSQL troubleshooting
• Completely remove the Lync 2010 
• Lync Client authentication testing facility

Instalation of IBM DB2 module should be very easy (refering to the installation instructions):

1. First of all, we need to download the driver package from here
2. unpack the package to the server at /opt/ibm_db2/dsdriver
3. chmod 755 installDSDriver
4. ./installDSDriver
5. Install pecl and php-pear (may need ksh): yum install php-pear
6. pecl install ibm_db2
7. When asked, provide the path to the db2 driver (here /opt/ibm_db2/dsdriver)
8. You may check if it is installed by: pecl list
9. Last thing: chmod o+w /opt/ibm_db2/dsdriver/cfg
10. Edit /etc/php.ini and add extension=ibm_db2.so
11. service httpd restart

Then in PHP:

<?php
    $databaseName = "your_db_name";
    $hostName = "your_host_name";
    $port = 50001;
    $userName = "your_user_name";
    $password = "your_password";
    $conn_string = "DRIVER={IBM DB2 ODBC DRIVER};DATABASE=$databaseName;HOSTNAME=$hostName;PORT=$port;PROTOCOL=TCPIP;UID=$userName;PWD=$password;Security=ssl;";
    $conn = db2_connect($conn_string, '', '');

    if($conn) {
        echo "Connected!";
        db2_close($conn);
    } else {
        echo "Not connected<br>";
        echo db2_conn_errormsg();
    }
?>

Whole process with lot of pre-requisites for python is here (it works with little modifications for PHP too).

Here is my case (almost 16 hours wasted…)

– Host is on Centos 7, external IP, one ethernet interface

– Guest 1, Windows Server 2008 R2, external IP

– Guest 2, Windows Server 2008 R2, external IP

The vmware network on both guests was set to bridged (with replicating the state of physical network), rest on default settings.

The guest 1 is able to ping internet, guest 2.

The guest 2 is able to ping internet and guest 1.

Both guests cant reach host and the host is not reaching any of the guests.

I was trying everything but i didn’t imagine that in the file:

all i need to do is to change from

add_bridge_mapping eno1 -1

to

Success!