I have two disk partitions, say sda1 and sda2, each containing a VG.
VG_SYS has a number of LV, one for every partition I needed.
The problem is that VG_SYS has gone out of space (or better, partitions made on its LVs are out of space), while VG_GUESTS has a lot of free space.
Is it possible, and how, to shrink VG_GUESTS (and eventually sda2 too) and reallocate the free space to sda1/VG_SYS?
Thanks in advance
What are the steps for a safe and reliable migration of a mail server from an old hardware to a new one, being changed OS, SW and so on?
Once the new machine is installed, the software is semi-configured what is the best way to replace the old server having the lowest down time ?
Any suggestion is very appreciated, especially keeping into account problems related to SSL certificates, IP address, DNS issues and so on. User account, aliases,and domains migration is not a real problem at the moment instead.
I have a physical machine with two nics.
I already have a fully working cobbler server and I am able to deploy a bare metal or dom0 server in a few minutes. My target OS is RHEL5.
My goal is to deploy a dom0 installation in which only eth0 is up and configured (I can already do it now), and a number of domUs that are only bound to the other physical nic, eth1.
I can assign a different IP for each domU if necessary, of course.
Anybody can point out a link to documentation or an idea to accomplish my task?
The reason of my intent is security, dom0 would be only reachable by a management network, while domUs will only live on public network.
Thanks in advance
I'd like to avoid my Mac OS X machine from using ipv6 at all.
I'm looking for a programmatic way to disable ipv6 on every network interface and, possibly, to avoid ipv6 support by the kernel at all.
As an explanation, I need the equivalent of adding "alias ipv6 off" to modprobe.conf in linux.
The "it's impossible" answer is welcome, being supported by some kind of official source, of course.
EDIT:
I want to remove ipv6 from logs, from ipfw, from everywhere. Even for the satisfaction of knowing if and how it is possible. It is is right to do it is another issue :)
I need to access ext3 partitions over an LVM logical volume in a SATA HD connected through USB2 to my iMac with OS X 10.6 .
Is it possible to see LVM volumes from OS X? How?
Disk Utility says that the attached device is unknown and propose to initialize it.
I set up a fully working cobbler server on a RHEL5 machine. This is able to deploy a new server on bare metal machine, partitioning the disks, using LVM and creating as much virtual machines as I need. The virtual machines takes their install instructions, configurations, yum repositories and so on from the cobbler server too.
This is really exiting, but the next step is to provide a Full Zimbra server through this mechanism.
My goal is to have Zimbra running upon 2 virtual machines, one for the mail engine and another for the webmail interface (at least as a first step).
What is the best way to deploy them and configure the entire system using puppet?
The philosophy is to use cobbler for very minimal deployment of the machines (both bare-metal and virtualized ) and leave every configuration issue to puppet.
Thank you in advance to anyone will give me some structured info and suggestion on the topic
I have configured a working cobbler system that successfully handles my bare metal server deployment and I'm going to start the configuration management issues using puppet (integrating it as much as possible with cobbler of course).
As it seems that on the net there are a number of sparse resources giving puppet recipes in a more or less complete set, I'm asking is someone can suggest a good and well tested set of puppet recipes that can be used as a strong starting point on which I can build my customization.
I'm looking for something well written, as simple as possible in order to be maintainable, possibly hack-less that can handle as much as possible the "standard" configurations of a server. Starting from that I'll will write my recipes, possibly specializing those already existing in order to fully handle every aspect of my servers.
My goal is to have machines that can safely formatted and reinstalled in minutes via cobbler+puppet, without human interaction.
Thanks in advance
Is it possible to have Mac OS X guest on a XEN host?
If yes, how?
There are difference for Mac OS X Server?
In particular I'm interested in the installation of a testing Mac OS X Server inside a XEN domU, being the host a Debian linux server in the case that this would matter.
Thanks in advance
I'd like to have a Software Update Server (SUS) for my clients.
Since this service would not be critical, redundancy and availability are not an issue for me.
Given the fact that SUS is only available on Mac OS X Server (I'd be happy to be denied), I'm asking if it is technically possible to install Mac OS X Server on this HW without the need for any particular hack.
Thanks in advance
I have a DNS and DHCP server (Linux machine) managing my LAN addresses and names.
Everything is configured and fully working once the clients are up and running, having every Mac OS X client a DHCP given IP in the private class 192.168.1.x as given by the DHCP server.
The problem rises on reboot, since each machine seems to start up in the 169.x.x.x range and only after having got the DHCP IP everything turns ok ... this is temporary issue and takes only a few seconds. This is very annoying for me, because on the IDS the ARP watcher floods the logs with tons of 169.x.x.x "new" machines
Any idea to disable this behavior?
The supposed right behavior should be to get a local-link IP address if, and only if, the machine could not successfully gain a DHCP given IP.
Thanks in advance
EDIT:
I think there is no timing problem, as it seems that the DHCP server responses suddenly, being the macosx station to not continue the DHCP request sequence.
As shown by the following tcpdump output, we see that macosx falls back to link-local just after having asked (and having got reply) for a DHCP, it goes on with link-local and only after 8 seconds it retries and finishes a new DHCP request.
TCPDUMP OUTPUT:
19:49:32.373567 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:25:4b:ac:ae:be (oui Unknown), length 300
19:49:32.373754 IP fw1.dearchstudio.lan.bootps > Conference-Rooms-Mac-mini.local.bootpc: BOOTP/DHCP, Reply, length 300
19:49:32.374119 arp who-has 169.254.22.58 tell 0.0.0.0
19:49:32.774285 arp who-has 169.254.22.58 tell 0.0.0.0
19:49:33.174403 arp who-has 169.254.22.58 tell 0.0.0.0
19:49:33.574622 arp who-has 169.254.22.58 tell 169.254.22.58
19:49:33.974890 arp who-has 169.254.22.58 tell 169.254.22.58
19:49:33.984227 IP 169.254.22.58 > 224.0.0.251: igmp v2 report 224.0.0.251
19:49:34.978606 IP 169.254.22.58.mdns > 224.0.0.251.mdns: 0 [5q] [4n] PTR (QM)? 58.22.254.169.in-addr.arpa.[|domain]
19:49:35.078822 IP 169.254.22.58.mdns > 224.0.0.251.mdns: 0*- [0q] 5/0/0 PTR[|domain]
19:49:35.229123 IP 169.254.22.58.mdns > 224.0.0.251.mdns: 0 [4q] [4n][|domain]
19:49:35.479441 IP 169.254.22.58.mdns > 224.0.0.251.mdns: 0 [4q] [4n][|domain]
19:49:35.728759 IP 169.254.22.58.mdns > 224.0.0.251.mdns: 0*- [0q] 11/0/0[|domain]
19:49:35.981123 IP 169.254.22.58.mdns > 224.0.0.251.mdns: 0 PTR (QM)? 58.22.254.169.in-addr.arpa. (44)
19:49:36.081741 IP 169.254.22.58.mdns > 224.0.0.251.mdns: 0*- [0q] 4/0/0 PTR[|domain]
19:49:36.729630 IP 169.254.22.58.mdns > 224.0.0.251.mdns: 0*- [0q] 11/0/0[|domain]
19:49:36.808274 arp who-has fw1.dearchstudio.lan tell Conference-Rooms-Mac-mini.local
19:49:36.808290 arp reply fw1.dearchstudio.lan is-at 00:0e:0c:69:b6:10 (oui Unknown)
19:49:36.808424 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:25:4b:ac:ae:be (oui Unknown), length 300
19:49:36.808609 IP fw1.dearchstudio.lan.bootps > Conference-Rooms-Mac-mini.local.bootpc: BOOTP/DHCP, Reply, length 300
19:49:37.656051 IP 169.254.22.58 > 224.0.0.251: igmp v2 report 224.0.0.251
19:49:38.081483 IP 169.254.22.58.mdns > 224.0.0.251.mdns: 0*- [0q] 15/0/0[|domain]
19:49:40.264083 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:25:4b:ac:ae:be (oui Unknown), length 300
19:49:40.264252 IP fw1.dearchstudio.lan.bootps > Conference-Rooms-Mac-mini.local.bootpc: BOOTP/DHCP, Reply, length 300
19:49:40.264735 arp who-has Conference-Rooms-Mac-mini.local tell 0.0.0.0
19:49:40.664952 arp who-has Conference-Rooms-Mac-mini.local tell 0.0.0.0
19:49:40.696059 IP 169.254.22.58.mdns > 224.0.0.251.mdns: 0*- [0q] 1/0/0 (Cache flush) PTR[|domain]
19:49:40.796526 IP 169.254.22.58.mdns > 224.0.0.251.mdns: 0*- [0q] 14/0/0[|domain]
dhcpd.log:
fw1:~# tail /var/log/dhcpd.log Aug 11 19:45:52 fw1 dhcpd: DHCPACK on 192.168.1.162 to 00:25:4b:ac:ae:be via eth1 Aug 11 19:45:56 fw1 dhcpd: DHCPREQUEST for 192.168.1.162 from 00:25:4b:ac:ae:be via eth1 Aug 11 19:45:56 fw1 dhcpd: DHCPACK on 192.168.1.162 to 00:25:4b:ac:ae:be via eth1 Aug 11 19:48:08 fw1 dhcpd: DHCPDISCOVER from 00:13:21:b8:46:e0 via eth1: network 192.168.1/24: no free leases Aug 11 19:49:32 fw1 dhcpd: DHCPREQUEST for 192.168.1.162 from 00:25:4b:ac:ae:be via eth1 Aug 11 19:49:32 fw1 dhcpd: DHCPACK on 192.168.1.162 to 00:25:4b:ac:ae:be via eth1 Aug 11 19:49:36 fw1 dhcpd: DHCPDISCOVER from 00:25:4b:ac:ae:be via eth1 Aug 11 19:49:36 fw1 dhcpd: DHCPOFFER on 192.168.1.162 to 00:25:4b:ac:ae:be via eth1 Aug 11 19:49:40 fw1 dhcpd: DHCPREQUEST for 192.168.1.162 (192.168.1.254) from 00:25:4b:ac:ae:be via eth1 Aug 11 19:49:40 fw1 dhcpd: DHCPACK on 192.168.1.162 to 00:25:4b:ac:ae:be via eth1
I think STP is not a matter for this.
EDIT 2:
I definitively can assure that this behavior has nothing to do with any switch protocol or configuration, I connected a Mac mini with Snow Leopard Server directly to my arpwatcher interface and I saw the same behavior I had with the switch.
I think I can definitively say this is an Apple BUG in the link-local implementation in OS X.
I have a Debian Linux based file-server using Samba and nowadays being accessed successfully by Mac OS X clients..
I'd like this resource to be available in a more user friendly way, by means of Bonjour.
Is it possible, to configure the Linux server, so that it announces itself on the local network, via Bonjour? And if so, how?
I'd like to fine tune the firewall rules in my Mac OS X, without a GUI I mean.
I came from Linux world and I'm used to manually fine tune my firewalls, having full control on every rule, adding filtering rules on a per-IP or per-MAC basis and so on ...
Is it possible (of course, I hope) and how it is possible to fulfill this need in Mac OS X?
I'd like to find something similar to the very very powerful and reliable "Shorewall" scripts I had in Linux
Thanks in advance to everyone would give me a tip.
I have moved my system on andexternal Raid 1 enclosure attachet to my iMac through Firewire 800 (the best an iMac can do ;-( ) ...
I'd like to move the swap on the internal disk in order to increase somehow the performances ...
How can I achieve this task?
Thank you in advance
I have just connected an external RAID1 enclosure (a Lacie Quadro2) through FireWire800 interface to my iMac 24.
I copied all my internal "Machintosh HD" to the new disk, setted the system to use the external disk as Startup Disk, the volume is named "My HD".
After restarting, I run Disk Utility and resized the internal disk 1st partition to 100GB, then made a new partition of about 500GB, named "TM HD".
Then I configured Time Machine to use "TM HD" and runned it ...
.. all works very very fine, but ...
I'd like to made "Machintosh HD" hidden when the system is started using the external disk ... and eventually have it to be the boot disk if and only if the external HD ("my HD") is not available or not connected in order to avoid unwanted filesystem modification.
Is it possible to tell Mac to not visualize a given partition on the internal disk?
Any idea is wellcome, thanks in advance :)
What is the best and quicker way to deploy and customize a number of newly arrived iMacs (say 10 or more) using an already configured iMac, a DHCP/DNS server, a LAN and Remote Desktop installed on the configured machine ?
The main tasks to be performed are accounts creation (1 account per machine of course), system settings customization, security, filevault, firewall and other minor tasks.
If needed I can think about a PXE/bootp netboot, serving an install image via tftp or similar (sorry, i'm new to MAC, but I'm pretty expert on linux/unix and I'm used to configure RHEL5 servers via cobbler+puppet... so please don't hesitate to be geek ;)
Thanks in advance