Diesen Artikel habe ich schon im Mai 2009 geblogged. Allerdings hat sich grml seitdem so dramatisch weiterentwickelt, dass ich ihn aktualisiert und mit neuem Datum versehen habe.
Update: Das hier beschriebene Verfahren funktioniert seit grml 2011.12 nicht mehr. Der Way to Go is nun grml-rescueboot.
In Mietserver-Recovery mit veraltetem Rescuesystem habe ich beschrieben, wie man grml aus dem komprimierten Image von einer Festplatte booten kann, was zum Beispiel für Rescue-Zwecke an einem Server ohne direkt zugängliche Konsole sehr praktisch sein kann. Zu dieser Zeit (der Artikel stammt aus dem März 2007) war das noch eine größere Operation mit "CD-Image loopback mounten, die einzelnen Dateien rauskopieren und an die richtige Stelle im Dateisystem werfen", mit neueren grml-Versionen ist es aber noch viel einfacher geworden.
Continue reading "grml als eigenes Rescuesystem"
Dear Lazyweb, sorry to bother you again, but I have tried to get this question answered on IRC, on Usenet and on the Samba Mailing List, and was not able to get an answer (not even a remotely clueless one) there. Can you help?
I currently have an "interesting" task to accomplish: An IT environment with about 90 % Windows and 10 % Linux machines would like to unify backup. Currently, the Windows world backs itself up to tape using Backup Exec; the Linux world has Amanda backing up to a big disk
RAID.
This RAID is acting up and is scheduled to disappear. The current plan is to back up the Linux world with Amanda to a Samba share which is then backed up to tape by the Backup Exec installation running in the Windows world.
The Linux systems are in a diffent network, and the firewall people would like to keep the ports being open between the two networks to the bare minimum. I don't want to see NETBIOS Broadcasts inside the Linux world, I don't want to see this server in any network neighborhood, and the system acting as the Samba server for the backup should have as few open ports as possible. Of course, the share should be read only and to be as secure as possible.
Continue reading "Samba Help Needed"
Dear Lazyweb, can anybody with some advanced socat-foo tell me the command line needed to have socat create a socket in the local file system and to listen on it, so that I can have Virtualbox connect a virtual serial console to it?
The material available on socat on the web is sparse, and virtualbox-related docs usually contain "tick the create pipe option", which is not helpful here since I would like to see the first output the virtual machine prints to its serial port. It would be vastly more useful to have the socket already created with socat listening so that I can immediately see what is being printed to the socket.
Traditionally, the Linux kernel is software that I compile myself from pristine upstream sources for various reasons. I have three major kernel flavours that get built (server, desktop and notebook), and I am pretty current in running a bleeding edge kernel. This is not really necessary any more nowadays, but it's a tradition that works pretty well.
My kernels get built on sid and are packaged up with kernel-package, and equivs builds a dependency helper package which pulls in the kernel's dependencies such as initramfs-tools and takes care of cross-version updates like going from 2.6.29 to 2.6.30. Up to now, I was always able to run a kernel built this way on all my systems which can range from oldstable to unstable.
Continue reading "Unified Kernel for etch, lenny and sid"
Nur eine kurze Notiz für mich selbst und alle die es brauchen können. Sei H ein zu virtualisierender Host, E der ESX-Server, auf den H virtualisiert werden soll, V der Virtual-Center-Server und C der Client der armen Sau, die das alles machen muss.
Dann spricht:
- C über die bekannten Mechanismen mit V
- C CIFS (TCP/445) und TCP/9089 mit H
- V vermutlich irgendwie mit E (das war in meinem Testsetup eh schon erlaubt)
- H https (TCP/443) und irgend ein VMware-Gedöns (TCP/902) mit E
Und wieviele hochprivilegierte Passworte hier mehr oder weniger verschlüsselt zwischen den einzelnen Maschinen ausgetauscht werden, will ich am besten gar nicht erst wissen.
