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Light At The End Of The Tunnel

systems administration meanderings

iPhone and heart rate monitoring

I should have known. I thought it would be easy. The iPhone 4s has bluetooth. The Scosche MyTrek works with the iPhone via bluetooth. All good as Apple is known for it’s integration and ease of use it would work beautifully. Alas no. Failures of scosche mytrek - where to begin. The Scosche MyTrek software does not integrate with other popular activity tracking software like runkeeper, endmondo pro, etc neither does it utilise the inbuilt GPS for mapping your running/cycling route. Read more →

Problems with Google and Android

Two problems within a week, unusual. Google Wallet Google had a sale of apps over 10 days to celebrate 10 billion downloads, some I was interested in and on one day I purchased two in quick succession. However, one downloaded and the other failed. With the error of transaction declined. I phoned up the bank thinking it was a credit card problem. They informed me it was a duplicate transaction and had cancelled it. Read more →

How to be a high school super star

I’ve just finished reading this book. Apart from the fact it is aimed towards American students and the particulars of their system, I enjoyed it. The ideas the book puts across are well presented and I can relate to. It’s not for everyone, if you think High School education is all about aiming to take exams then this book may not be for you. If you are open to alternatives, that do involve hard work, but in a more innovative manner then give it a go. Read more →

One of the beauties of brackup

My friend over at openfusion has a number of tips on Brackup. One he has not covered though is the ability of Brackup to restore from a backup that has moved location or changed transport. Recently we have been migrating our backups from one set of storage to a bigger volume. In the process we changed how the backups were stored from FTP to SFTP. So the original backup was saved using the credentials for the FTP service which now did not exist. Read more →

Network card order RHEL/CentOS 6

In RHEL/CentOS 5 this was handled by /etc/modprobe.conf. Now in RHEL/CentOS 6 this is now handled by udev. The file that controls everything is /etc/udev/rules.d/70-persistent-net.rules An example of how this file looks is shown below:- # PCI device 0x14e4:0x164c (bnx2) (custom name provided by external tool) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?", ATTR{address}=="00:19:b9:f2:d4:f7", ATTR{type}=="1", KERNEL=="eth", NAME="eth1" # PCI device 0x8086:0x10d6 (igb) (custom name provided by external tool) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?", ATTR{address}=="00:1b:21:0c:2a:70", ATTR{type}=="1", KERNEL=="eth", NAME="eth2" # PCI device 0x8086:0x10d6 (igb) (custom name provided by external tool) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="? Read more →