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In this guide you will learn how to set up NodeJS and Ghost in an Ubuntu LXC container.
Table of Contents
I had to set up a blog for an interaction design course that I am taking this semester. I figured this would be the perfect opportunity to play with Node.js and work with the absolutely beautiful Ghost blogging platform. I installed all of this on my primary Linode server that hosts this blog among other things. I like to keep my server neat, so whenever I am working with a new technology that I have not used before, especially when I know it is going to install a bunch of random files and run a bunch of random scripts that I will never be able to track down, I like to put it all into an LXC Container.
Aside from a few snags, the installation was pretty straightforward. I followed the installation guide on the Ghost github site and had to make a couple small changes due to this issue. The interesting part of this was getting the container to be accessible from the outside world. I used apache’s
mod_proxy module to forward requests to the new subdomain that I created directly to Ghost which was running in my LXC container. I have seen a couple different approaches to making containers accessible to the outside world but I think that this approach works well especially if you are hosting multiple sites on the same server.
Installing Your Container
I suppose this part is optional, you can just as well run this in a regular server or VM. However, if you like to put things into tiny little boxes like me, read on! The following should be run as root.
apt-get install lxc lxc-create -t download -n nodejs # During the template selection choose ubuntu, trusty, and amd64 # Start the Container as a Daemon lxc-start -n nodejs -d # Open a screen session to attach the container. # Why? Because "If it's worth doing, it's worth doing in screen" screen -dRR node lxc-attach -n nodejs
Installing Node.js and Ghost
Now that we have our shiny new container, lets get Node.js and Ghost installed. Since containers come with a very minimal set of software, we will install some additional utilities as well. The following should be run as root inside of your container. The only change I had to make from the official install guide was installing nodejs-legacy along with all the other stuff. Take a look at the issue linked to above if you are interested in more information.
apt-get install wget unzip nodejs npm nodejs-legacy # Create a Directory for your Ghost blog and go into it mkdir ghost cd ghost # Download and Unzip Ghost wget https://ghost.org/zip/ghost-0.5.8.zip unzip ghost-0.5.8.zip # Install Ghost npm install --production # Since we are in a container, in order to be able to access ghost from the host # machine we will need to edit the config.js file and change the values of 127.0.0.1 to 0.0.0.0. vim config.js :%s/127.0.0.0.1/0.0.0.0/g # Start Ghost npm start
If all went well you should now see this in the terminal.
root@hci:/ghost# npm start > firstname.lastname@example.org start /ghost > node index Migrations: Up to date at version 003 Ghost is running in development... Listening on 0.0.0.0:2368 Url configured as: http://localhost:2368 Ctrl+C to shut down
You can now exit the screen session by pressing Ctrl+a and then Ctrl+d to get back to the host.
Apache Proxy to Container
The last step of this is to set up the Virtual Host config file to proxy requests to our new Node.js container.
# Grab the IP address of your container lxc-ls --fancy # Load the appropriate apache proxy modules a2enmod proxy a2enmod proxy_http # Configure the Virtual Host file to set up the proxy it should look something like this. Be sure to replace the IP address listed below with the IP address of your actual container. <VirtualHost *:80> # Admin email, Server Name (domain name), and any aliases ServerAdmin email@example.com ServerName hci.levlaz.org ProxyVia full ProxyPreserveHost on <proxy> Order deny,allow Allow from all </proxy> ProxyPass / http://10.0.3.101:2368/ ProxyPassReverse / http://10.0.3.101:2368/ </Virtualhost> # Restart apache to clean things up service apache2 restart
You should now be able to access your Ghost blog by going to the domain that you set up in your virtual host config file. In order to set up Ghost for the first time, you will want to navigate to http://yoursite.com/ghost Ghost is a great product! This was a fun little project because it is a good exercise with LXC and proxying requests to containers. I hope you found this useful! If you have any questions or run into any issues please let me know in the comments below.
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