I am going to install a web server running on cPanel with several database servers connected only from the internal network (192.168.10.0/24). Since I need to run some yum installation in every box, I need to have internet access on each of the backend server.
My problem is I do have only 1 public IP [...]
I have another set of MySQL Galera Cluster running on Percona XtraDB Cluster which having 2 nodes with 1 arbitrator. In total, I do have 3 votes in the quorum. The expected problem when we have 2 nodes run in cluster is the possibility for this cluster to be split-brain if the arbitrator is down, [...]
I have a PPTP server which run on Mikrotik Routerboard and I need to connect one of my CentOS 6.3 box to this VPN to retrieve some information from internal server. The VPN account already created in PPTP server and this post will just show on how to connect from CentOS CLI box.
I will [...]
We have just bought a new server with Supermicro X9SCL-F motherboard for our backup server. This server comes with 2 NICs:
Intel 82579LM Gigabit Intel 82574L Gigabit
Unfortunately, once the hypervisor installation completed, only one network interface is detected by VMware ESXi 5.0 which is Intel 82574L port. Since our architecture required to have 2 [...]
In this post I am going to install a MySQL cluster as refer to the architecture as below:
MySQL cluster is consists of 3 types of node:
Data node (mysql-data1 & mysql-data2) Sql daemon node (mysql-mysqld1 & mysql-mysqld2) Management node (mysql-management)
Data node will hold the database and [...]
Piranha is a simple yet powerful tool to manage virtual IP and service with its web-based GUI.
As refer to my previous post on how to install and configure Piranha for HTTP service: http://blog.secaserver.com/2012/07/centos-configure-piranha-load-balancer-direct-routing-method/, in this post we will complete over the Piranha configuration with HTTP and HTTPS load balancing using direct-routing with firewall marks [...]
This post is continuation of the previous post: http://blog.secaserver.com/2012/10/build-low-cost-call-center-elastix-asterisk-1/
Now we should have our PBX ready to receive call. But we are not yet configure on how to manage calls and agents. We should have a system to monitor agent’s activities. We can achieve this by using Call Center module inside Elastix. Install it by [...]
My company requires me to build a simple call centre whereby:
It can receive incoming call from customers Digital receptionist with interactive voice response (IVR) Make outgoing call Call queue 2 call center agents workings to attend all calls
In order to achieve this, we need to know how many concurrent calls that we usually get during [...]
I am a free VMware ESXi 5.0.0 user. The biggest problem with this release is the failure of auto-start and auto-shutdown for VM after/before the hardware node reboot. Whenever you start or restart the ESXi node, you will need to manually turn on every single virtual machine inside it. This has caused a lot of [...]
We have several directories which have been restricted to some users in our company. Since they will need to authenticate before able to access the directory via web browser, I need to manage simple Apache user authentication using htpasswd.
To create new password protected directory under /home/website/public_html/secure1, create a new .htaccess file:
I am going to integrate Severalnines’s ClusterControl into my existing MySQL Galera cluster which currently being used by our development team. ClusterControl allow us to manage, control and monitor our MySQL cluster from single point.
Actually, you can use their installer script to install a complete MySQL Galera suite as refer to this post.
I usually having problem whereby I always forgot to check what happen to my copying or downloading progress in the server. This has gives me idea to create a script to notify me via email once the command executed and completed.
For example, I usually download a big installer file which usually make me constantly [...]
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