Deploying Rails: Automate, Deploy, Scale, Maintain, and Sleep at Night (The Facets of Ruby)

Today's smooth Rails functions have plenty of relocating components. determine your subsequent creation deployment is going easily with this hands-on e-book, which publications you thru the whole creation strategy. you will organize scripts to put in and configure all of the software program your servers want, together with your software code. as soon as you are in creation, you are going to the way to organize structures to watch your application's well-being, assemble metrics so that you can cease difficulties sooner than they begin, and connect issues after they move wrong.

Deploying Rails takes you on a expertly guided journey of the present most sensible practices in Rails deployment and administration. you can find in-depth reasons on successfully working a Rails app by means of leveraging well known open resource instruments comparable to Puppet, Capistrano, and Vagrant. Then you are going to transcend deployment and how you can use Ganglia and Nagios to watch your application's future health and assemble metrics so that you can head off difficulties sooner than they happen.

you are going to start via construction your personal digital surroundings through writing scripts to provision a construction server with Vagrant and Puppet. Then you will leverage the preferred Rails deployment software Capistrano to install an software into this infrastructure. as soon as the app is stay, you are going to video display your application's wellbeing and fitness with Nagios, and configure Ganglia to assemble approach metrics. eventually, you will see tips on how to continue your info sponsored up, recuperate facts whilst issues get it wrong, tame your log records, and use Puppet to automate every little thing alongside the way.

even if you are a Rails developer who desires a greater knowing of the desires of a creation Rails approach, in case you are a procedure administrator who desires to deal with a Rails software, or if you are bridging the space among improvement and operations, this ebook may be your roadmap to winning construction deployment and upkeep, even if your program has ten clients or ten million users.

What You Need:

The workouts and examples are such a lot suited for a working laptop or computer operating a few Unix version, corresponding to Mac OS X or Linux. yet a home windows computing device working Linux in a VirtualBox digital computer is additionally adequate.

we will assist you to manage a neighborhood digital desktop on your deployments; you will not want a committed server to hone your deployment abilities. we think you to have a easy familiarity with the Ruby programming language, the Ruby on Rails framework, and the Unix command line.

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B okay b okay t t di Writing a Nagios Puppet Module • ninety nine monitoring/with_package/modules/nagios/manifests/server. pp category nagios::server { package deal { "nagios3": be certain => current } } because we’re including a brand new module, we additionally have to upload this to our manifests/nodes. pp dossier. We’ll additionally set up Apache (in addition to Nagios) at the nagios node on the grounds that Nagios surfaces an HTML interface that we’ll are looking to use. monitoring/initial_node/manifests/nodes. pp node "app" inherits basenode { comprise apache2 contain massiveapp contain memcached contain mysql comprise passenger } node "nagios" { contain apache2 contain nagios::server } Let’s cross forward and run Puppet; this may get the Apache and Nagios programs in position. nagios $ sudo puppet follow --verbose manifests/site. pp information: making use of configuration model '1302145355' become aware of: /Stage[main]/Nagios::Server/\ Package[nagios3]/ensure: created The programs are put in, yet we wish to make sure that the Nagios server will begin while our VM reboots. So, let’s open modules/nagios/manifests/server. pp and upload a provider source that’s enabled. monitoring/with_service/modules/nagios/manifests/server. pp classification nagios::server { package deal { "nagios3": ascertain => current } provider { "nagios3": verify => operating, hasrestart => actual, allow => precise, hasstatus => precise, D l df W ! B okay b okay t t di 100 • bankruptcy 6. tracking with Nagios restart require => "/etc/init. d/nagios3 reload", => Package["nagios3"] } } Let’s move forward and run Puppet to get our provider definition put in. A payment is the time period that Nagios makes use of for the method of interpreting something’s prestige. The Nagios net interface is our window into the exams and their effects, so we have to make sure that Apache can serve up that internet interface. Nagios comes with an Apache digital host configuration dossier that does the activity, however it permits Nagios to be accessed utilizing the URL /nagios on any area that’s hosted by means of that server. We like to run Nagios by itself area (nagios. somehost. com) in order that it won’t intrude with anything that we wear that host. to do this, we’ll desire a digital host definition. it will be a static dossier in our Puppet module; let’s replica within the default Apache configuration dossier. nagios $ cp /etc/nagios3/apache2. conf modules/nagios/files/ Now we’ll make a few alterations to modules/nagios/files/apache2. conf. We’ll upload a aspect and delete all of the commented-out traces; as soon as that’s performed, we've got a comparatively small dossier. monitoring/modules/nagios/files/apache2. conf NameVirtualHost *:80 ServerName nagios. localhost ScriptAlias /cgi-bin/nagios3 /usr/lib/cgi-bin/nagios3 ScriptAlias /nagios3/cgi-bin /usr/lib/cgi-bin/nagios3 DocumentRoot /usr/share/nagios3/htdocs/ Alias /nagios3/stylesheets /etc/nagios3/stylesheets Alias /nagios3 /usr/share/nagios3/htdocs ideas FollowSymLinks DirectoryIndex index. html AllowOverride AuthConfig Order Allow,Deny enable From All AuthName "Nagios entry" AuthType uncomplicated AuthUserFile /etc/nagios3/htpasswd.

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