Not long ago I setup up a Bitcoin node on a Debian Wheezy VPS to teach myself about Bitcoin and the blockchain in general. It was a great learning experience but the memory requirements of the Bitcoin software kept causing my VPS instance to run out of memory so the…
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Running a Bitcoin Node on Debian Wheezy
Over the last few years I have keenly followed the rise of Bitcoin from its early days trading at around $8USD. I watched with interest when it made its sharp rise to $1200USD and then felt a bit of dismay with more recent decline back to around the $200USD mark.…
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Simple Iptables Blacklist
Anyone that has run a server for any length of time quickly learns that the Internet is full of spammers, bots and other characters you would prefer didn’t exist. A firewall is key to keeping these guys out and Linux comes with a Kernel level firewall called iptables that can…
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Creating a Tor Relay on Debian
The TOR project has proven itself an important tool in the fight to protect the anonymity of people online. The project obviously needs servers to route traffic through for the project to achieve its goals though. So contributors are needed to donate relays nodes ensuring a free Internet for all.…
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PHP FPM Errors After Upgrade
Recently I noticed a few of my servers had stopped serving my sites, withย 502 errors being to visitors. I took a look at my site logs and noticed that they were full of the “Permission Denied” errors below: 2014/06/09 09:45:17 [crit] 11453#0: *22 connect() to unix:/var/run/php5-fpm.sock failed (13: Permission…
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Encypting Diectories With eCryptfs
eCryptfs is an encrypted file system that works at the file system level. In this post I am going to cover the basic usage of eCryptfs and some of the situations you may want to think about using a encrypted file system. What is an encrypted file system? File system…
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Raspberry Pi Overclocking
Like just like alot of other people as soon as the Model B Raspberry Pi went on sale in March I eagerly rushed out and ordered one from Element 14. Due to production delays this didn’t arrive till the start of June.ย But given its size, specs and price I…
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Near Realtime File Replication With Lsyncd
Ever wanted real time backups ofย directories on your server? To replicate static media files for a website to a separate box to reduce load? An easy solution lays with lsyncd it allows you to watch a directory structure on your file system, and replicate any changes on a remote…
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