Mina: Faster deployment and remote server automation

coderhs — Tue, 13 Sep 2016 06:59:08 +0000

Mina is a similar tool, but faster. The reason why it runs faster is because it generates a bash script, uploads it to the server and run there, rather than creating a new ssh session and run every command one by one. Mina is one of our default tools at Red Panthers. To use mina in your project, add mina to your Gemfile.

gem 'mina'

and to get started do

mina init

http://nadarei.co/mina/setting_up_a_project.html https://www.digitalocean.com/community/tutorials/how-to-deploy-with-mina-getting-started Having a one step deployment is an important requirement for any project so have one ready using mina or capistrano. Note: Assets pre-compile

invoke :'rails:assets_precompile'

Run another rake task

invoke 'production_backup' if RAILS_ENV == 'production'

Run shell commands

queue "sudo service myapp restart"

The syntax queue is referring to the fact that, the commands are all made into a single shell script and then later executed together. ]]>

Enable log rotation within the rails application

coderhs — Wed, 27 Jul 2016 05:00:19 +0000

heroku, as heroku won’t let you store files for more than 15 minutes in their server. You also do not need it if you are using some third party services like loggly or papertrail to manage your logs . In the unix world, you can use log rotate service, which would be installed by default in all linux servers. But we at Red Panthers feel that everything that touches or involves our rails application should be placed along with our rails application as much as possible. If you feel the same way, it can be achieved by placing the code below in the production.rb file.

config.logger = Logger.new( Rails.root.join("log", Rails.env + ".log" ), 5 , 100 * 1024 * 1024 )

The Logger.new accepts three parameters:

The file name, which would be production.log
The number of files you want to keep
The size of each file in bytes. (100 * 1024*1024 means 100 MB)

So, when the time comes to add the 6th 100 MB log file, it will delete the oldest. Unix Way For those who still want to use the unix log rotate, they should create a new config file at /etc/logrotate.d/myrailsapp-config as shown below

$ cat /etc/logrotate.d/myrailsapp-config
/var/www/myrailsapp/current/log/*.log {
  compress
  copytruncate
  daily
  dateext
  delaycompress
  missingok
  rotate 90
}

In case you were wondering, here are what these options mean:

compress – Compress logs using gzip
copytruncate – Copy the log out of the way, and then truncate the existing logs
daily – Rotate daily
dateext – Add the date the logs were rotated as the extension instead of a number
delaycompress – Skip compressing the log until the following day
missingok – Do not raise an error when there is a missing log file
rotate 90 – Keep up to 90 days worth of logs

]]>

devops – redpanthers.co

Mina: Faster deployment and remote server automation

Enable log rotation within the rails application