[CentOS] Best way to backup and entire machine??
I want to mirror a Centos box, not having done this before, I'm looking for guidance. What is the best way to perform this task, I have a running webserver, a single external IP address to the website, and wanted to protect myself should the server go down. My though would be a mirror of that webserver, running in background, if the main server dies, then just move the mirror in place, change the IP and go on... Limiting down time... John Plemons attachment: john.vcf___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Best way to backup and entire machine??
John Plemons wrote: I want to mirror a Centos box, not having done this before, I'm looking for guidance. What is the best way to perform this task, I have a running webserver, a single external IP address to the website, and wanted to protect myself should the server go down. My though would be a mirror of that webserver, running in background, if the main server dies, then just move the mirror in place, change the IP and go on... Limiting down time... Depends on what data is on the system, if it is just static content then I would configure the backup system the same way as the primary and setup a rsync over ssh job to keep the web content in sync. If there is a database or other things then it can be more complicated. nate ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Best way to backup and entire machine??
Dear John, I want to mirror a Centos box, not having done this before, I'm looking for guidance. What is the best way to perform this task, I have a running webserver, a single external IP address to the website, and wanted to protect myself should the server go down. My though would be a mirror of that webserver, running in background, if the main server dies, then just move the mirror in place, change the IP and go on... Limiting down time... You may also find some useful information on the wiki: http://wiki.centos.org/HowTos Best Regards Marcus ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Best way to backup and entire machine??
John Plemons wrote: I want to mirror a Centos box, not having done this before, I'm looking for guidance. What is the best way to perform this task, I have a running webserver, a single external IP address to the website, and wanted to protect myself should the server go down. My though would be a mirror of that webserver, running in background, if the main server dies, then just move the mirror in place, change the IP and go on... Limiting down time... There are several approaches, depending on how you want to trade expense and effort against possible downtime - and whether your site is approaching the point where you need a load-balanced farm of servers and possibly redundant sites. The easiest plan with the least to go wrong is probably to use RAID1 mirrored/swappable drives with a spare chassis, and also do nightly backups. The most likely failure will be a disk drive, handled transparently by the mirror until you can replace it. Next most likely would be the power supply/motherboard which you handle by swapping the disks to your spare with a small amount of downtime. Next would be an operator or software error that erases or corrupts your disks. For that you have to restore from your last backup with a much longer downtime. You can keep the spare server in sync with DRBD and fail over automatically with heartbeat at the expense of more complexity but you still need backups for the error scenaro. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Best way to backup and entire machine??
The web machine uses a PHP shopping cart running atop MySQL, all of the main and important information is kept as a part of the MySQL DB. So the main thing I would want to mirror is the application and the DB. I'm a surplus dealer, so hardware isn't a big issue, I have extra servers that can be up in a couple of hours without any big layout of money. I'm just looking for the best way to keep down time to a minimum and as always to KISS, Keep It Simple Stupid. Simple to manage, simple to maintain... John Les Mikesell wrote: John Plemons wrote: I want to mirror a Centos box, not having done this before, I'm looking for guidance. What is the best way to perform this task, I have a running webserver, a single external IP address to the website, and wanted to protect myself should the server go down. My though would be a mirror of that webserver, running in background, if the main server dies, then just move the mirror in place, change the IP and go on... Limiting down time... There are several approaches, depending on how you want to trade expense and effort against possible downtime - and whether your site is approaching the point where you need a load-balanced farm of servers and possibly redundant sites. The easiest plan with the least to go wrong is probably to use RAID1 mirrored/swappable drives with a spare chassis, and also do nightly backups. The most likely failure will be a disk drive, handled transparently by the mirror until you can replace it. Next most likely would be the power supply/motherboard which you handle by swapping the disks to your spare with a small amount of downtime. Next would be an operator or software error that erases or corrupts your disks. For that you have to restore from your last backup with a much longer downtime. You can keep the spare server in sync with DRBD and fail over automatically with heartbeat at the expense of more complexity but you still need backups for the error scenaro. attachment: john.vcf___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Best way to backup and entire machine??
John Plemons wrote: The web machine uses a PHP shopping cart running atop MySQL, all of the main and important information is kept as a part of the MySQL DB. So the main thing I would want to mirror is the application and the DB. I'm a surplus dealer, so hardware isn't a big issue, I have extra servers that can be up in a couple of hours without any big layout of money. I'm just looking for the best way to keep down time to a minimum and as always to KISS, Keep It Simple Stupid. Simple to manage, simple to maintain... Use rsync for the PHP files and read up on setting up mysql replication, endless howtos and stuff out there for doing that. Keep the slave db server in read-only mode until you need to fail over to it, flip the read-only bit and restart, off you go.. nate ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
