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Mail Servers fail over
In case you find yourself in situation, when your email server is going down or being inaccessible due to the 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...
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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 leads to their usage in increasingly diverse projects, including those that require nonstop operation and minimal recovery time. Standard tools, such as mysqldump are inconvenient for the use in large databases that can reach tens of gigabytes. If you can...
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 have grown rapidly in past decades due to the opportunity they are providing. You can easily deploy, manage and extend your VoIP network over an existing IP networks. It also gives you greater variety of features, than regular telephony for the...
05.07.2011
[General settlement]
Currently, Skype is one of the fastest growing VoIP telephone networks. 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 Microsoft decided to acquire Skype this...
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 over 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 organize...
18.02.2011
Our story started when we upgraded bandwidth for file servers to 1Gbps. We've analyzed RRD charts and found out 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 customers...
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...
