@johntron

DevOps!

@johntron

Buzzwords• DevOps• Back-end• SaaS• Scalability• Virtualization•Web services

@johntron

Tonight• LAMP stack (not really)• vi• BASH tips• Monit

Explain order

@johntron

Environment• Linux (Ubuntu)• Apache 2+• PHP 5.3+• MySQL 5.1+

@johntron

Supporting Software• Shell• Editor• SSH• Package manager• System services• Version control• System monitoring

@johntron

Where we’re at• Installed Ubuntu 12.04 LTS 64-bit• One user account: johntron• Nothing else

How many people use Ubuntu?Other Linux distros?My reasons http://distrowatch.com/dwres.php?resource=popularity

@johntron

APT

apt-cache searchsudo apt-get install openssh-server vim apache2 php5 mysql-server curl monit

@johntron

sudo apt-get install openssh-server vim apache2 php5 mysql-server curl monit

Lied about “nothing else”

@johntron

vi(m)

Who thinks they don’t need a powerful, standard editor?>>>But first! (next slide)<<<

@johntron

SSH shared keysDo it.

How many use them?Disable plaintext!12 min.

mkdir ~/.sshifconfigexit

ssh-keygenscp ~/.ssh/id_rsa.pub johntron@<ip>:~

@johntron

• command mode – ESC• insertion mode – i• line mode – :

vi(m)

Who thinks they don’t need a powerful, standard editor?

@johntron

• Changing modes• Cutting, paste, copy• Multi-line operations• Saving and quitting

vi(m)

sudo vi /etc/ssh/sshd_configx:esci:<line>:$:1,$d:w:q

@johntron

Job control

ctrl-zjobsbg 1fg 1%1# disable root login# disable password authentication# restart ssh

@johntron

There’s no place like ~

@johntron

Those who cannot remember the past are condemned to repeat it

– George Santayana

@johntron

History

!!history!<number><up arrow>!!:s/sudo //history -cblah !$

@johntron

Monit!

Who’s bored?sudo vi /etc/monit/monitrc# change delay# enable web consolesudo addgroup johntron monitman apache2# lookup pid locationsudo vi /etc/monit/conf.d/apache2http://mmonit.com/monit/documentation/monit.html#configuration_examples#change httpd to apache2sudo service apache2 stop

company

posix_getpid()