Git, Fabric and Python - Tag You're It

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There are many discussions that you can read about value of creating 'versions' or 'versioning' software.  More often then not, the versions (e.g. v 1.2.34) are used for marketing purposes or commercial product releases.  Does the internal engineering staff pay attention to such monikers on a daily basis?  Not really.  ​

​There are some instances, however, whereby knowing exactly which files on running on what server can come in handy.  

I wrote this Fabric task that can be called when doing a code push.  It tags the set of files with the name of the host machine the deploy is going to + a unique time stamp.  It also creates a 'tag' file which contains what branch of the code was used for this deployment.


Uncomplicated Firewall (UFW)

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RackSpace's flavor of Ubuntu has installed the Uncomplicated Firewall and enables it by default (my experience).  Nice utility to manage the iptables for a local software based firewall.  ​

Enable UFW

To turn UFW on with the default set of rules:

sudo ufw enable

To check the status of UFW:

sudo ufw status verbose

Allow

sudo ufw allow <port>/<optional: protocol>

example: Allow incoming tcp and udp packet for MySQL

sudo ufw allow 3306  #open port for MySQL

example: To allow incoming tcp and udp packet on port 53

sudo ufw allow 53

example: To allow incoming tcp packets on port 53

sudo ufw allow 53/tcp

example: To allow incoming udp packets on port 53

sudo ufw allow 53/udp

Deny

sudo ufw deny <port>/<optional: protocol>

example: To deny tcp and udp packets on port 53

sudo ufw deny 53

example: To deny incoming tcp packets on port 53

sudo ufw deny 53/tcp

example: To deny incoming udp packets on port 53

sudo ufw deny 53/udp