bitcoin mining

Sometimes I just wonder if all the computing power put into mining bitcoins could instead have been put to better use crunching data for projects such as folding@home or seti@home. Instead, these complex calculations to mine bitcoins serve no practical purpose. While I understand the rationale ...

new server!

Recently, my server has been overloaded quite badly (load avg averages at 1.5) due to the amount of services I am running on it. (unbound, cron, lcd, apache, git, motion, mysql, lighttpd, minidlna, samba, deluge, openvpn, owncloud, squid). The torrent daemon and web interface along with ...

powerbanks as UPS

Just a quick thought. Since most arm dev boards servers are powered by USB, if we want to include power redundancy, it doesn't make sense to use a traditional UPS. Firstly, UPS storage capacity tend to be quite large compared to the meager amounts of power an ARM processor uses. Secondly, I'm ...

mysql optimization

Recently did quite a lot of mysql related administration. Found quite a few ways to optimise that may make future administration easier. 1) If you are going to add/drop databases very frequently, you might want to add innodb_file_per_table=1 into your my.cnf config file. This will allow mysql ...

happy monthiversary

After more than half a year of tweaking + trial and error, I think I have finally pinpointed the cause of my server crashes. Nope, nothing to do with kernel stability, nothing to do with crond or any other service. Probable cause is hardware related, the pcb for the barrel connector power input ...

Problems with FTP

1) No copy feature. There is no way to duplicate the file the file on the server for backup, testing or any other purposes. You have to download the file and upload it to another location, which is quite a hassle especially for large number of files. One would think that this is a common ...