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Merge pull request #875 from Supermathie/sysadmin-docs
Add install notes for Ubuntu
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Jeff Atwood
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docs/INSTALL-ubuntu.md
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docs/INSTALL-ubuntu.md
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# Discourse Install Guide on Ubuntu
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## Install Ubuntu 12.04 with the package groups:
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* Basic ubuntu server
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* OpenSSH server
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* Mail server
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* PostgreSQL database (9.1+)
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### Configure the mail server:
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In our example setup, we're going to configure as a 'Satellite system', forwarding all mail to our egress servers for delivery. You'll probably want to do that unless you're handling mail on the same machine as the Discourse software.
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Install necessary packages:
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# Run these commands as your normal login (e.g. "michael")
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sudo apt-get -y install build-essential libssl-dev libyaml-dev git libtool libxslt-dev libxml2-dev redis-server libpq-dev gawk curl pngcrush
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## Install nginx
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At Discourse, we recommend the latest version of nginx. To install on Ubuntu:
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# Run these commands as your normal login (e.g. "michael")
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# Remove any existing versions of nginx
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sudo apt-get remove '^nginx.*$'
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# Add nginx repo to sources.list
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cat <<'EOF' | sudo tee -a /etc/apt/sources.list
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deb http://nginx.org/packages/ubuntu/ precise nginx
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deb-src http://nginx.org/packages/ubuntu/ precise nginx
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EOF
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# Add nginx key
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curl http://nginx.org/keys/nginx_signing.key | sudo apt-key add -
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# install nginx
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sudo apt-get update && sudo apt-get -y install nginx
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## Install rvm and ruby environment
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### Systemwide installation
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Taken from http://rvm.io/, the commands below installs RVM and users in the 'rvm' group have access to modify state:
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# Run these commands as your normal login (e.g. "michael")
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\curl -s -S -L https://get.rvm.io | sudo bash -s stable
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sudo adduser $USER rvm
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newgrp rvm
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. /etc/profile.d/rvm.sh
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rvm requirements
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# Build and install ruby
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rvm install 2.0.0
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gem install bundler
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## Discourse setup
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Create discourse user:
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# Run these commands as your normal login (e.g. "michael")
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sudo adduser --shell /bin/bash discourse
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sudo adduser discourse rvm
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Give postgres DB rights to the `discourse` user:
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# Run these commands as your normal login (e.g. "michael")
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sudo -u postgres createuser -s discourse
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sudo -u postgres psql -c "alter user discourse password 'todayisagooddaytovi';"
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Change to the 'discourse' user:
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# Run this command as your normal login (e.g. "michael"), further commands should be run as 'discourse'
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sudo su - discourse
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# Pull down the latest release
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git clone git://github.com/discourse/discourse.git
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git checkout latest-release
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# Install necessary gems
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cd discourse
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bundle install --deployment
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_If you have errors building the native extensions, ensure you have sufficient free system memory. 1GB with no swap won't cut it._
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Configure discourse:
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# Run these commands as the discourse user
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cd ~/discourse/config
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for i in {database,redis}.yml discourse.pill; do cp $i.sample $i; done
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cp environments/production.sample.rb environments/production.rb
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Edit discourse/config/database.yml
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- remove profile and development
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- leave in production and perhaps test
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- change production db name to: `discourse_prod`
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- Change `host_names` to the name you'll use to access the discourse site
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Edit discourse/config/redis.yml
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- no changes if this is the only application using redis, but have a look
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Edit discourse/config/discourse.pill
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- change application name from 'your_app' to however you want to distinguish this ('discourse')
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- Add option to Bluepill.application: `":base_dir => ENV["HOME"] + '/.bluepill'"`
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- Should end up looking something like: `Bluepill.application("discourse", :base_dir => ENV["HOME"] + '/.bluepill') do |app|`
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- comment out debug instance (from `app.process("thin-debug")` through to nearest `end`)
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- search for "host to run on" and change to current hostname
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- note: clockwork should run on only one host
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Edit discourse/config/initializers/secret_token.rb
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- uncomment secret_token line
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- replace SET_SECRET_HERE with secret output from 'rake secret' command in discourse directory
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- delete the lines below as per instructions in the file
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Edit discourse/config/environments/production.rb
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- check settings, modify smtp settings if necessary
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- See http://meta.discourse.org/t/all-of-my-internal-users-show-as-coming-from-127-0-0-1/6607 if this will serve "internal" users
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Initialize the database:
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# Run these commands as the discourse user
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# The database name here should match the production one in database.yml
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createdb discourse_prod
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RUBY_GC_MALLOC_LIMIT=900000000 RAILS_ENV=production bundle exec rake db:migrate
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RUBY_GC_MALLOC_LIMIT=900000000 RAILS_ENV=production bundle exec rake assets:precompile
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# TEMPORARY BUG WORKAROUND:
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mkdir -p ~/discourse/tmp/sockets
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## nginx setup
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# Run these commands as your normal login (e.g. "michael")
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sudo cp ~discourse/discourse/config/nginx.sample.conf /etc/nginx/conf.d/discourse.conf
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Edit /etc/nginx/conf.d/discourse.conf
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- change socket paths to: "unix:/home/discourse/discourse/tmp/sockets/thin.0.sock;"
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- edit `server_name`. Example: "server_name cain.discourse.org test.cain.discourse.org;"
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- modify root location to match installed location: "root /home/discourse/discourse/public;"
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## Bluepill setup
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Configure bluepill:
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# Run these commands as the discourse user
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gem install bluepill
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echo 'alias bluepill="bluepill --no-privileged -c ~/.bluepill"' >> ~/.bash_aliases
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rvm wrapper $(rvm current) bootup bluepill
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rvm wrapper $(rvm current) bootup bundle
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Start Discourse:
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# Run these commands as the discourse user
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RUBY_GC_MALLOC_LIMIT=900000000 RAILS_ROOT=~/discourse RAILS_ENV=production NUM_WEBS=4 bluepill --no-privileged -c ~/.bluepill load ~/discourse/config/discourse.pill
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Add the bluepill startup to crontab.
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# Run these commands as the discourse user
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crontab -e
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Add the following line:
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@reboot RUBY_GC_MALLOC_LIMIT=900000000 RAILS_ROOT=~/discourse RAILS_ENV=production NUM_WEBS=4 bluepill --no-privileged -c ~/.bluepill load ~/discourse/config/discourse.pill
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Congratulations! You've got Discourse installed and running!
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<!--
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Now you have to deliver the service to your users.
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<strong>CDN</strong>
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<h3>haproxy</h3>
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<pre>listen http-in
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bind 64.71.148.2:80
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acl is_bare hdr(host) -i discourse.org
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acl is_home hdr(host) -i www.discourse.org
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acl is_blog hdr(host) -i blog.discourse.org
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# Discourse
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acl is_app hdr(host) -i meta.discourse.org
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acl is_app hdr(host) -i try.discourse.org
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# How-To-Geek
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acl is_app hdr(host) -i discuss.howtogeek.com
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# Redirect to www
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redirect prefix http://www.discourse.org if is_bare
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use_backend home if is_home
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use_backend blog if is_blog
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use_backend app if is_app
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default_backend app
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backend app
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mode http
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balance roundrobin
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option http-server-close
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option forwardfor # This sets X-Forwarded-For
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option httpchk GET /srv/status HTTP/1.1\r\nHost:\ meta.discourse.org
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server app2_00 10.0.0.2:9100 check
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server app2_01 10.0.0.2:9101 check
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server app3_00 10.0.0.3:9100 check
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server app3_01 10.0.0.3:9101 check
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server app4_00 10.0.0.4:9100 check
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server app4_01 10.0.0.4:9101 check
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server app5_00 10.0.0.5:9100 check
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server app5_01 10.0.0.5:9101 check
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backend home
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mode http
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balance roundrobin
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option http-server-close
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option forwardfor # This sets X-Forwarded-For
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server home_app1_1 10.0.0.2:80
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backend blog
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mode http
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balance roundrobin
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server app1_1 10.0.0.40:80
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</pre>
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-->
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