Skip to main content

Upgrading to Fedora 16

Finally had some time to upgrade my Fedora 14 distribution to Fedora 16. I followed the YUM upgrade instructions on the Fedora website. Having never had good luck with odd Fedora releases, I will be skipping Fedora 17 for now and waiting for 18 instead. Overall, The Fedora 15 upgrade was smooth and the reboot of my dual-boot system was successful. However, the following Fedora 16 upgrade presented me with a blank GRUB screen after reboot even though I followed the instructions line by line. At the end, I had to create a Fedora 16 DVD, boot into rescue mode, re-run the GRUB setup commands again: 
chroot /mnt/sysimage

/sbin/grub2-mkconfig -o /boot/grub2/grub.cfg
/sbin/grub2-install BOOTDEVICE
After dealing with the usual sound problems, the system was up and running with the dual-boot GRUB setup still intact. At this point, a couple of changes have come to my attention. There is a new systemd component that handles system services. Runlevels concept is replaced by targets instead. Read more at systemd documentation and cheatsheet page. In addition, the chkconfig and service command outputs seem to have changed.
Labels:

Comments

Post a Comment

Popular posts from this blog

Securing Symfony2 REST services with FOSOAuthServerBundle

Overview In my previous article, I wrote about setting up a Symfony2 REST service using FOSRestBundle. However, this REST service was behind a firewall protected by a generic form_login provider. Not really ideal if you wish to open your REST API to other applications. So in this article, I will try to explain how to set up FOSOAuthServerBundle to protect your REST API methods using OAuth2. Before we start getting into the gritty details, it is a good idea to have a look at the official OAuth2 documentation . Let's begin... FOSOAuthServerBundle Installation You have to install v1.1.0 of FOSOAuthServerBundle if you are using Symfony 2.0.x. If not, see the docs . First, add the following entries to your deps file: [FOSOAuthServerBundle] git=git://github.com/FriendsOfSymfony/FOSOAuthServerBundle.git target=bundles/FOS/OAuthServerBundle version=origin/1.1.x [oauth2-php] git=git://github.com/FriendsOfSymfony/oauth2-php.git Run the vendors script to install these...
87 comments
Read more

Adding post-login logic to FOSUserBundle

Having finally figured out how to use FOSUserBundle in my project, I decided to keep track of all logins next. The implementation turned out to be a breeze thanks to Symfony2's security listener mechanism. As usual, the first step is to create a MongoDB document for this purpose. This is a very simple document that contains a user's id, session id, IP address, and login date. src/Acme/UserBundle/Document/LoginHistory.php namespace Acme\UserBundle\Document; class LoginHistory { protected $id; protected $userId; protected $sessionId; protected $ip; protected $createdAt; /** * Get id * * @return custom_id $id */ public function getId() { return $this->id; } /** * Set userId * * @param int $userId */ public function setUserId($userId) { $this->userId = $userId; } /** * Get userId * * @return int $userId */ public function getUserId...
6 comments
Read more

A Parcelable Tutorial for Android

Parcelable Interface Overview In one of my earlier posts, I mentioned writing an article about FOSOAuthBundle integration with an Android client. To keep that article to the point, I need to explain some concepts beforehand. One of the important concepts is the Android Parcelable interface that allows data to be transferred between different processes/threads. Certain network operations with Android such as authentication with OAuth2 and then fetching data from a REST endpoint should be performed in the background in order not to block the UI thread. This requires data to be fetched by a service (I have opted for Intent Services in my implementation) in the background and then passed back to the calling activity/fragment with a result callback. This is where the Parcelable interface comes into play. Basically, the Parcelable interface allows your classes to be flattened inside a message container called a Parcel to facilitate high performance inter process communication. The rece...
3 comments
Read more