As a result I decided to write a small set of scripts to monitor and display bandwidth usage of radius manager accounts.

The radius manager database does not contain granular usage records since radius manager does not keep uniform time period records. Each time a session is disconnected a new record is created in the radacct table. Since the time-span of this record depends on the actual connection duration it could span from a few seconds to more than a day.  This means that it is impossible to get granular hourly or daily stats from this table.

My solution is simple. I use a Perl script to process the radacct table on a regular interval. When I read the table I gather the sum of all in and out bytes for each user, irrespective of how many sessions they initiated since my last check.

I then compare the new totals to the previous totals. Since I run the script at a regular interval, say 5 minutes, I thus know how much bandwidth this user has consumed in the last 5 minutes.

I then summarize this data into my own set of tables where I keep hourly, daily and monthly totals for each user. This script is called from a cron task so runs every five minutes, ensuring I have accurate and consistent statistics.

I then wrote some HTML (with some PHP and jQuery) to give me a summary of each user’s usage for a given period (hour, day or month). I then allow the end user to sort this by various columns.

To make the data retrieved more relevant I also read the service details from the rm_users and rm_services tables. This allows me to show what the user’s monthly limit is, and to then show a % used value in the results. User rows that are over a certain threshold (ay 90% used) are then highlighted in a different color.

I also wrote a graph component which will show a highlighted user’s usage at an hourly level over any given day or at a daily level for a given month.finally I show the actual session usage records from the radacct table below the graph

This allows users to monitor their own usage. From an ISP management perspective this view allows admins to quickly bring up usage history for an individual account, and to zero in on accounts about to be capped, etc. Both hotspot and PPoE accounts are monitored, and can be reported on.

A consortium of Garden Route based companies is ready to launch an IT technology hub in George which will create jobs and train up new skills.

George’s IT company owner Imel Rautenbach is currently drumming up support for the initiative at provincial and national level.  The consortium aims to use the Western Cape Province’s business arm to market and develop in order to get launched nationally and internationally. IT technology and electronic centred businesses will be the engine that will drive this local initiative. “The idea behind pooling resources and skills is to keep all our software and hardware developmental work in the Garden Route. We already have around 30 businesses on our data base that have all the necessary skills and technology to form the nucleus. “

“We plan to link up our efforts with that of the Province. By collectively marketing and taking on projects jointly we can land contracts which may otherwise have been outsourced to companies outside the region. With the skills data base we now have we can take on big contracts, and the risk of one small company folding, is eliminated because collectively we can pool our skills to ensure continuity” says Rautenbach who was recently elected the Vice President of the George Chamber of Business.

On www.gardenrouteconsortium.co.za you can read more about their quest to “Provide project management and quality control services during the full lifecycle of large and complex projects. To define, enable, and manage key technology growth areas in the region.”

Provincial government support

Rautenbach has just returned from a very successful round of meetings with Western Cape Government on how the IT Consortium can link in to and benefit from the Western Cape’s own IT strategy and marketing initiatives. Alan Winde, MEC for Finance and Tourism is very excited about the potential the consortium holds for the Garden Route region. He has committed to bringing a high powered delegation of provincial officials to the region to further explore this potential.

”This initiative fits perfectly with our own plans for the growing of the Technology industry within province”, said Jo-Anne Johnston, Western Cape’s Chief Director of Trade and Industry Development.  She has committed her department’s full support for the initiative and is exploring ways of bringing other government departments onboard as well.

Jenny McKinnel, Executive Director of the Cape IT Initiative (CITI), is equally excited. Citi is a non-profit organisation established in 1998 to develop and support the information and communications technology (ICT) cluster in the Western Cape. “CITI is keen to support the Garden Route IT Consortium as their goals are directly in line with our own”, said McKinnel.  CITI are going to be working together with the Garden Route IT Consortium to unlock government funding and help promote the region as an IT destination, especially focussing on the impressive line-up of currently supplied services and R&D projects the various consortium members are working on.

Research and Development

The Consortium also has a strong focus on Research and Development (R&D), with several innovations currently in the works. These includes projects like fridge magnets that will show the current water level in your rain tank, a stock theft project that tracks animal and vehicle movements on farms in real time and alerts the farmers the moment the animal’s movements indicates distress, as well as a project to track hikers in remote mountain hiking trails.

CITI’s McKinnel is putting her full support behind the formation of a new R&D Lab in the Garden Route, which will help accelerate these R&D ventures. The Western Cape Agriculture department has also been tasked to get involved in some of these projects. DTI and other government funding for R&D spending will be applied for to cover the lab setup and initial phases of some of these projects. Talks with the Small Enterprise Development Agency (SEDA) on how it can assist the consortium in its R&D and marketing initiatives is ongoing.

Wireless technology is ready to be unfolded

As part of the R&D venture a state of the art wireless network is being set up. This network will eventually cover the entire Garden Route but is currently being rolled out in the George area. The network uses the latest wireless technology which promises much faster speed than traditional networks.

The network will be non-commercial and completely free to join. The network will not supply internet access but rather will be a backbone for R&D projects and educational programs.  Through wireless technology business can monitor activities through CCTV camera link-ups and WEBCAMs. Regional weather and water consumption monitoring can be done for instance through wireless technology.  “The potential of the new network is limitless. With remote monitors farmers can even check-up on where their cattle is grazing, or see what vehicles are accessing their farms.” said an excited Rautenbach.

Western Province Government is busy drafting a policy on City based networks and will be liaising with the consortium to learn from the initiatives taken in the Garden Route.

Training
On of the consortium’s major aims is to boost education in the Southern Cape. The Massachusetts Institute of Technology (MIT University) in the USA, has made available to the consortium around 2000 online programs focussing on science and technology. These programs will be made available to local schools completely free of charge, once they have connected to the new network.  ”The beauty of this is that it is all so achievable. Video conferencing can be set up so that children in a small rural school can also listen to and view someone in the USA giving a lecture and so be brought into the world of science and technology.” Students can do courses as well through internet. Ms Johnston from Western Cape Government is currently exploring ways of unlocking government funding to get all the region’s schools connected to this initiative.

Virtual hub

“By creating a virtual hub, we want to create a momentum which will bring about enough technology based work here in George which will mean that those people who are currently commuting to bigger centres, and living in George, can in future work here as well.
“We are having a road show to launch the roll-out and we are pleased that Western Cape Finance and Tourism Minister Allan Winde’s revitalization programme happens to coincide and slot in with our initiatives, and we hope to tap into those being rolled out.”

For more info contact Imel Rautenbach on 044 802 0402 or visit the consortium website at www.gardenrouteconsortium.co.za or send an email to info@gardenrouteconsortium.co.za

Thanks to the huge surge in online applications and cloud computing, combined with more affordable and faster  broadband connections it is now possible to make full use of online apps in South Africa.

These days I rotate between a office Laptop with a big screen, a desktop at home, an ultra portable netbook and an iphone. Each device has its time and place, but it has always been a nightmare keeping everything in sync, from contacts to emails to passwords to documents.  This was even more of a pain every time I had to re-install any of these devices.

Well, now it is a different story, and those about to re-install as part of their Windows 7 upgrade should take note.

I can have a newly installed PC ready with all my files, emails, bookmarks, passwords, etc in less than 15 minutes. All I do is install a set of apps that (securely) shares my digital life between dives. The list includes the following:

Application		Description	Windows	Linux	iPhone
	RoboForm	Syncs web links, passwords, identities and form data amongst PCs and the iphone
	GoodSync	Syncs folders and remote locations, ideal for backing up remote ftp sites, etc
	Google Bookmarks	Syncs bookmarks across multiple browsers and PCs. All you need to do is install the Google Toolbar, authenticate, and voila!, your bookmarks appear in your browser.
	DropBox	Syncs documents  across PCs and the iphone. I also use dropbox to sync settings for apps that do not natively allow this ,for example ftp clients, etc.
	Google Docs	Google Docs are ideal for viewing or editing MS office docs without having MS Office installed. It is also great for accessing your docs when on someone else’s PC.
	Gmail	I use Gmail as my main mail, calendar and contact store, accessing it online and via Thunderbird and the iphone.  Searching for emails in your desktop mail client can take forever, with gmail you find it virtually instantly.
	Thunderbird	Thunderbird does email, calendaring and contacts. I use IMAP to connect it to my gmail account and it does the rest. Email signatures are synced across PCs by storing it in a dropbox subfolder.
	eWallet	Store and synchronize passwords and sensitive information across PCs and the iphone. Good security and auto sync feature makes this a great tool for storing all sorts of information.
	Tweetdeck	Access Twitter from PCs and iphone. Tweetdeck also syncs your search and notification settings amongst all your devices.

Now obviously when storing your life online security is a major consideration. There are some things I will never store online, like pin numbers ,etc. As to the rest, I make sure I use strong passwords and never re-use the same password for different applications and sites. Both RoboForm and eWallet contain good password generators that can be used.

As I do use Linux (Ubuntu) on a regular basis I have indicated which of these apps have Linux versions available.

There are other apps I use frequently like MS Office, VirtualBox, Photoshop, Pastel, etc, but as these are not online or synchronize their data between PCs I do not include them in the list.

One important piece of the puzzle that is still missing is an online billing, time and attendance and project management app. Although there are many out there I am still to find one with the feature set and price that I am happy with.

I know that online or cloud apps are purely web based, but in this context I am including apps that share their data across the cloud, as for me the true definition of the cloud is being free from any single PC to perform one’s work.

What follows is a simply breakdown of the many hats worn day to day:

The audience listens to the client, sometimes the message is clear, concise and to the point, other times it is passionate but vague, other times it is simply dreary. Everyone needs to have there say, as truly great clients can come out of small beginnings.

The assessor then needs to read the viability of the task at hand, and decide the way forward.  Knowing what it takes to please the customer is a skill the assessor cannot do without.  Sometimes it is better to walk away from a seemingly lucrative deal when the client needs are simply above what is practical or realistic. Trying to please everyone never works.

The negotiator cuts to the chase, turning a need into a price. These days costing web design is a black art, as the price seems to be more based around the desire than the effort.  For me at least it makes no sense trying ot compete on price, as webdesign should not be judged on cost but on result. Having said that, it would be stupid not be be price realistic.

The manager takes over, breaking the process into chunks and dishing out the work. This is not only a case of breaking the effort apart, there are the issues of timeline, complexity, etc. Knowing when to do it yourself and when to outsource is a critical component.

Then there is the heavy lifter, the person that makes the mechanics of the websites work. They put the framework together, install the CMS, set up the shopping cart, the payment gateway and the user registration system.

The designer steps into the ring, bringing light to a otherwise dreary looking result. Common sense needs to be kept in check though, as often budgets and time-lines can be blown by trying to constantly improve a design. Its a bit like gambling, nowing when to draw the line is key in walking away with the planned profit.

The showman has the job of selling the final result back to the client. The better the result math the expectation the smaller the costly tweaking will be, so getting it right in the delivery is as important as getting the execution spot on.

The tutor needs to be patient as the client is shown how to do what needs doing. Being prepared for the typical questions not only puts the client at ease, it results in real synergy.  I often find that it is the service that wins gold referrals, not the design.

When it comes to delivering truly solid work, thinking with different hats certainly helps put things in perspective. 

Being the best or the fastest or the cheapest does not work for me, and probably not for you either; rather, being consitent makes life a lot simpler, for me as well as my customers.

End user experience is a key decider when it comes to making a hosting or bandwith choice, but this is the most elusive measurable of all.

With the increased innovation taking place in the ISP hosting and ADSL offerings area it is becoming more difficult for users to make an informed choice.  It is often the extreme points of view, both good and bad, that surface on the web, distorting the real user experience.

I am proposing the creation of an impartial dashboard where everyone can view and compare the real life performance of the product offerings from the various ISPs.

What I propose is a dashboard that measures connectivity in a South African perspective, i.e. the typical experience a local user will have when using the adsl from a particular ISP. Various scenarious would be monitored, from various locations, incuding ping times, route analysis, etc.

Another key aspect when choosing an ISP is hosting performance.  Many local hosting providers offers very appealing packages, but how do a typical end user know which are worth the risk in migrating to a new offering. Things that would be measured and displayed in a visual dashboard would be hosting server performance (CPU, Load, memory, numer of sites hosted, etc).

For both adsl and hosting it is also key to measure availability as well as effective usability. From a technical perspective only opensource tools like Nagios, Smokeping, MRTG, RRD, SNMP, etc will be used to perform the monitoring and graphing.

For this to be a viable proposition I will need the co-operation of the local players, including Afrihost, Hetzner, IS, MWeb, Telkom, Web Africa, etc.  Let’s see if the new age ISPs will come to the party.

The site will not be a platform for those with a grunt to bear, but rather an informative portal where ISPs can be judged on what they deliver, not on what they promise, allowing the end user to make an informed choice.

As I use lots of bandwith every month (40 – 50 GB) I sat up and took notice when the offer surfaced. It would save a lot of money each month, but then performance is also an important factor. I use and supply lots of local services, so local bandwith performance is as important to me as international performance.

There is thus good news and bad news with the ADSL bandwith that comes from Afrihost (via the IS network). Local traffic is noticibly slower (Click the orange graph) whereas international traffic is noticibly faster (Click the green graph).

Tracerouting local sites hosted on Webafrica and Telkom ADSL show a significant increase in route hops, from typically 5 to over 10, and an increase of between 40ms to 70ms in ping times.  International ping times on the other hand is roughly 100ms quicker. This has been confirmed with multiple sites, using Nagios, Smokeping and PingPlotter.

For now I am willing to live with the slower local speeds, considering the cost saving, but will keep a WebAfrica account going for a dedicated VOIP link, as the performance of VOIP over Afrihost ADSL is simply not acceptable, due to the increased latency.

Some concerns remain, like the “there is nothing I can do about it” comment from the support guy when I asked him to amend my original order from 20GB/month to 50GB/month.  I guess I will really find out what their support is like when I get to need support.

Gian Visser, CEO of Afrihost has taken a bold step by introducing the below cost offer, and so far it seems to have paid off. Let’s hope it is sustainable without affecting the quality, else I suspect many new customers will reconsider the value for money attraction.