You’ve got backup. Now it’s time to update OS, isn’t it? First thing you should do is to chose which OS you want to use. I used to use FreeBSD. So this is one of choice, but not this time. CentOS6 is my choice because former one is CentOS5. Looks very natural, it make sense, right? Other option, Scientific Linux would be. It also one of linux distribution and they may be very similar. Some sites have tried to compare them, I am not sure how their difference is. Okay, they should have some difference though their kernel is same. Libraries and initial setting should be different…, who cares? Most of the people would make their own customize, so do I.
Never mind, we’d better move on.
Once you decided your new OS, the next thing is media choice. I am using rental vps server and I don’t need to care about it. Just single click is enough after praying the God.
After while, all setting are initialized and OS is updated. Then,
- type the new root password twice
- make new user and set up it
- update by ‘yum update’
- set up sshd
- close ports with iptable
- install programs and set them up with backup
That’s it. Item 1-3 are already in my blog.