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Mail Servers fail over
In case you find yourself facing your email server going down or being inaccessible due to Internet connectivity failures, it is very likely that you will feel the need of a second email server which will queue your e-mail messages automatically until your mail...
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Our Blog
16.02.2012
Highlights :
What we want to achieve: to block all calls from mobile phone of a local operator, also each time our DIDs are called from this telco.network we need to send a notification about it by mail.
What we have on our PBX : Asterisk 1.6.2.X and FreePBX 2.8 installed with core...
28.12.2011
Tags: backup, InnoBackupEx, InnoDB, mysql, no-downtime
The high prevalence of MySQL databases lends to its use in increasingly diverse projects, including those that require nonstop operation and minimal recovery time. Standard tools such as mysqldump are inconvenient for use in large databases that can reach tens of gigabytes. If you can still export...
11.10.2011
Tags: data warehouse, database, mysql
Some databases are used to store large amount of historical data (such as call detail records, log messages, etc). This data has the following common characteristics:
every record has timestamp (date and time when event occurs)
very large amount of records
such records should be stored...
05.08.2011
Tags: asterisk, monitoring, VoIP
[Monitoring principles]
General:
VoIP networks are grown rapidly in past decades because of opportunity they are giving. You can easily deploy, manage and extend your VoIP network over an existing IP networks and also it gives you bigger variety of features than regular telephony for the lower...
05.07.2011
[General settlement]
These days Skype is one of the fastest growing VoIP telephone network. It gives us the ability to make free calls between millions of members and also gives us cheaper outbound calls. The information above most likely explains why this year Microsoft decided to acquire...
04.07.2011
Tags: cluster, high availability, open-source
[Introduction]
This article is a continuation of "Service high availability using open-source tools" . Here we will describe the process of relatively complex cluster configuration with several nodes (more than two).
[Cluster architecture]
Description
Typically, a cluster...
29.03.2011
Tags: cms, ims, infrastructure, infrastructure management, puppet
Our company has been offering services in the IT outsourcing market for more than 7 years. Our customers are very different, as well as their servers and configurations. Companies like ours which have large numbers of servers, at a certain point, begin to ask questions like: “How do we...
18.02.2011
Our story started when we have upgraded bandwidth for file servers to 1Gbps. We've analyzed RRD charts and found that bandwidth usage is almost the same as before upgrade. 1Gbps service is not cheap, but this was not the problem we encountered. We wanted to provide better service for...
08.02.2011
1. Introduction
The main goal of this project is to ensure critical service like VoIP to be operational with minimum downtime in case of emergency, network congestion or hardware failure. Also this failover schema could be used with servers in different geographical location and on...
