Re: Cloning a FreeBSD system
Stephen Cook wrote: On 3/2/2012 11:57 PM, Shane Ambler wrote: On 28/02/2012 03:24, Stephen Cook wrote: I have FreeBSD 9.0 installed as a VirtualBox guest, and I plan on cloning it repeatedly to set up a fake network for me to toy with (e.g. setting up clusters of replicated databases, web server pools, etc). Another option to look at is using FreeBSD's Jails. Handbook chapter 16 Basically you can setup multiple jails on the machine that use the kernel of the base system (so it's not an entire emulated machine) but each jail has it's own environment, apps etc. I read up on jails and I am impressed, I had a vague idea about them but they are apparently a lot more powerful than I thought. This will get some use from me in the future when I'm setting up real servers. However, for what I'm currently doing, I want to stick with a bunch of VirtualBox VMs so I can simulate database failover by killing the VM in rude way, dynamically throw another machine into the mix, etc. Thanks! -- Stephen Cloning or duplicating a running system using dump/restore http://forums.freebsd.org/showthread.php?t=11680 You should check out the qjail port for simple jail cloning. Only takes 30 seconds to clone a jail. http://qjail.sourceforge.net/ Both vm's and jails are targeted by ip address, killing one results in same outcome on the network no matter which one you use. I don't use Virtual Box but if it does not have a dump/restore function then cloning at that level is not possible. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Cloning a FreeBSD system
On 28/02/2012 03:24, Stephen Cook wrote: Hello all! I'm relatively new to FreeBSD but I'm enjoying it so far. I have FreeBSD 9.0 installed as a VirtualBox guest, and I plan on cloning it repeatedly to set up a fake network for me to toy with (e.g. setting up clusters of replicated databases, web server pools, etc). Another option to look at is using FreeBSD's Jails. Handbook chapter 16 Basically you can setup multiple jails on the machine that use the kernel of the base system (so it's not an entire emulated machine) but each jail has it's own environment, apps etc. --- Shane Ambler FreeBSD (at) ShaneWare (dot) Biz http://ShaneWare.Biz ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Cloning a FreeBSD system
On 3/2/2012 11:57 PM, Shane Ambler wrote: On 28/02/2012 03:24, Stephen Cook wrote: I have FreeBSD 9.0 installed as a VirtualBox guest, and I plan on cloning it repeatedly to set up a fake network for me to toy with (e.g. setting up clusters of replicated databases, web server pools, etc). Another option to look at is using FreeBSD's Jails. Handbook chapter 16 Basically you can setup multiple jails on the machine that use the kernel of the base system (so it's not an entire emulated machine) but each jail has it's own environment, apps etc. I read up on jails and I am impressed, I had a vague idea about them but they are apparently a lot more powerful than I thought. This will get some use from me in the future when I'm setting up real servers. However, for what I'm currently doing, I want to stick with a bunch of VirtualBox VMs so I can simulate database failover by killing the VM in rude way, dynamically throw another machine into the mix, etc. Thanks! -- Stephen ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Cloning a FreeBSD system
On 2/27/12 5:54 PM, Stephen Cook wrote: Hello all! I'm relatively new to FreeBSD but I'm enjoying it so far. I have FreeBSD 9.0 installed as a VirtualBox guest, and I plan on cloning it repeatedly to set up a fake network for me to toy with (e.g. setting up clusters of replicated databases, web server pools, etc). [snip] 3) Create new SSH keys 3a) For host keys, I can delete the existing ones in /etc/ssh/ and reboot, is there a better way? 3b) Should I bother changing the SSH keys for any users I have? It is basically one user (I use to log in with) which will be the same across the board anyway. Why bother changing keys if this is only a fake network for you to toy with ? Let them be. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Cloning a FreeBSD system
On Mon, Feb 27, 2012 at 10:54 AM, Stephen Cook scli...@gmail.com wrote: 2a) I saw (on the internet) some people having problems because VirtualBox generates a new MAC address for cloned machines, which somehow screws up the naming of the network interfaces (e.g. they get renumbered, thereby ignoring any configuration you have set up). Now I can't find it anymore, at least not for FreeBSD. Some Linux forums have info about /etc/udev/rules.d/70-**persistent-net.rules which doesn't exist in FreeBSD as far as I can tell. Is this a concern? I don't seem to be having a problem but TBH I'd rather understand what is going on than just be lucky. You can set the MAC address statically in the VB machine. I don't know if it changes it by cloning a system, but even if it does you can change to what you want even with the GUI tools. FreeBSD doesn't use udev, and you should be thankful for it. What a nightmare when you want to do advanced things with your NIC's. What I'm guessing your reading about are people who have multiple nic's in the Vbox guest, and upon cloning mac addresses are changed for the devices. Since Linux device detection doesn't enumerate things the same way each time they created udev so devices would appear to have this. Well as you've seen evidence of, this doesn't work so well when tryin to script things on unknown devices. All this trouble to save a few seconds of boot time. 3) Create new SSH keys 3a) For host keys, I can delete the existing ones in /etc/ssh/ and reboot, is there a better way? ssh-keygen(1) is the typical method. -- Adam Vande More ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Cloning a FreeBSD system
On 2/27/12 7:05 PM, Adam Vande More wrote: On Mon, Feb 27, 2012 at 10:54 AM, Stephen Cook scli...@gmail.com wrote: 3) Create new SSH keys 3a) For host keys, I can delete the existing ones in /etc/ssh/ and reboot, is there a better way? ssh-keygen(1) is the typical method. Or just delete the existing keys and sshd will recreate them at first boot ;) ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Cloning a FreeBSD system
On Mon, Feb 27, 2012 at 10:21 AM, Damien Fleuriot m...@my.gd wrote: ssh-keygen(1) is the typical method. Or just delete the existing keys and sshd will recreate them at first boot ;) No, sshd will not create the keys. They are created by /etc/rc.d/sshd, which invokes ssh-keygen if it doesn't find the key files. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
