Updating CentOS 6.5 on DigitalOcean

Due to some security upgrades over at Stripe, the CentOS servers need to be updated so they can handle SHA-2 and TLS1.2. This turns out to be quite simple.

First, log in to the server and run:

yum check-update

This will list the updates that are available. It’s possible to select some or all of these for updating. For the sake of simplicity, I decided to update everything at once.

Before running the update, power down the droplet via putty:

sudo shutdown -h now

Now go to DigitalOcean and use their console to create a snapshot of the server. (FYI, it might take a moment for DO to register that the server is actually powered down.) This snapshot will be used for recovery in case anything goes sideways. Creating a snapshot can take from 15 to 30 minutes or more.

When the snapshot is completed, power up the server using the DO console. Now log in via Putty and run the following:

sudo yum -v update

This will take a few moments to finish. Note that I’ve added the ‘verbose’ option, so this will echo a lot of info about the process.

Once the update is completed, the server will need to be restarted. Follow the instructions in this post: http://174.118.30.218/tutorials/?p=86

Now load up the app in a browser and make sure things are working properly.

In my case, I was doing this at the behest of Stripe: next I ran the script they provided to confirm the server is now capable of handling SHA-2 and TLS1.2. All is now good:-)

Implementing Stripe in CakePHP

Here’s a very rough sketch of the steps involved in bringing Stripe into a CakePHP application:

Step 1.

Update composer.json to require stripe, then run ‘composer update’.

(FYI, Composer failed first time because I didn’t have Curl installed on my server. Once this was fixed, all went smoothly.)

Step 2.

Manually install Hashmode’s Stripe component in the /Controller/Component directory.

(NOTE, doing this with composer borks on my install since this component is still in dev mode and conflicts with the update policies set for the app in composer.json.)

Step 3.

Change the default nameSpace in the new component to ‘/app/…’.

Step 4.

Set up a Stripe account

Step 5.

Add the Stripe keys to bootstrap.php

Step 6.

Create the ‘add card’ form

Step 7.

Create a ‘form-submit-button’ element, and include in the add-card form

Step 8.

Include links to jQuery & the Stripe JS in the app

… etc.