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== Debian == === Corrupt passwd === Als passwd corrupt is, dan start de machine niet op. In [http://wiki.webhuis.nl/index.php/KVM#Reset_root_password|single user mode] is de prompt:<br/> I do not know my name@none:#<br/> Verder kun je niets. Stappen om er uit te komen: <pre> # mount -rw -o remount / # pwconv # passwd # sync # reboot </pre> Nuttige link: http://www.cyberciti.biz/tips/recovering-deleted-etcshadow-password-file.html === wheezy === === laptop === http://forum.thinkpads.com/viewtopic.php?f=9&t=98479 Status van de touchpad, kan als user: synclient -l In een terminal enabling touchpad: synclient TapButton1=1 Definitiever in 50-synaptics.conf, /etc/X11/xsession.d : Option "TapButton1" "1" * http://unix.stackexchange.com/questions/43933/xfce4-loses-title-bars-on-all-windows Xfce's window manager crashed for some reason and the simple fix is to run xfwm4 in console. === Lenny === ==== Problems:==== ===== slurpd vervangen ===== ===== DNS ===== master slave werkt niet goed Lenny maakt standaard gebruik van ipv6 en name resolution loopt fout: dc01:~# cat /etc/resolv.conf #search webhuis.nl nameserver 38.99.20.68 nameserver 208.69.39.2 #nameserver 10.20.31.35 dc01:~# ping opendns.org ping: unknown host opendns.org ===== Lenny NT access denied ===== ===== hvm op lenny ===== werkt niet, daardoor is win2008 niet op lenny te installeren xm create /etc/xen/win2008-32g-install.cfg No login prompt when using `xm console` Using a lenny domU, make sure you have hvc0 listed in inittab, like 1:2345:respawn:/sbin/getty 38400 hvc0. There happened to be a lot of changes of default console unit used by Xen (tty1, xvc0, hvc0 etc) but for a Lenny domU (version > 2.6.26-9) it's hvc0. ==== Solved ==== ===== datum ===== date +%Y%m%d%T -s "20111120 13:31:00" ===== Netwerk domU ===== De netwerkinterface van de domU werkt niet op de Intel machine. De vpn-router werkt wel, maar de toegevoegde machines niet. De interface op de dom0 in /etc/network/interfaces moeten de naam xen-brx krijgen scripts gaan analoog. ===== xm console werkt niet op de Intel machine ===== Het opstarten van het console blijft steken. Oplossing: Lenny xen werkt met een andere console definitie. Toevoegen in de <domain>.cfg: extra = 'console=hvc0 xencons=tty' ===== apt key update ===== apt-get update levert een error op: W: GPG error: http://mirror.webhuis.nl etch Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 9AA38DCD55BE302B W: GPG error: http://mirror.webhuis.nl etch/updates Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 9AA38DCD55BE302B W: You may want to run apt-get update to correct these problems Oplossing: gpg --keyserver keys.gnupg.net --recv 9AA38DCD55BE302B gpg --export --armor 9AA38DCD55BE302B | apt-key add - Keyservers: * gpg-keyserver.de * pgp.mit.edu * subkeys.pgp.net * keys.gnupg.net ===== apt InRelease update ===== apt-get update levert een error op: N: Repository 'http://ftp.uk.debian.org/debian buster InRelease' changed its 'Version' value from '10.19' to '10.13' E: Repository 'http://ftp.uk.debian.org/debian buster InRelease' changed its 'Suite' value from 'stable' to 'oldstable' Oplossing: # apt-get update --allow-releaseinfo-change ===== subversion ===== Localtime is gewijzigd van file naar symbolic link, dat resulteert in de volgende fout: # cfengine2:/var/backups/cfengine2# svn commit -m "handmatig 20090921" svn: Commit failed (details follow): svn: Entry '/var/backups/cfengine2/etc/localtime' has unexpectedly changed special status Oplossing: # cfengine2:/var/backups/cfengine2# svn pd svn:special etc/localtime property 'svn:special' deleted from 'etc/localtime'. # cfengine2:/var/backups/cfengine2# svn rm etc/localtime D etc/localtime # cfengine2:/var/backups/cfengine2# svn commit -m "handmatig 20090921" Transmitting file data ... Committed revision 224. ===== TLS bij ldap ===== http://rustykruffle.com/tech-stuff/ubuntu/ultimate-home-server-ldap-gnutls-nightmare/ try ldd $(which slapd) you may see, that slapd is build with gnutls and not openssl :-) You have two different solutions to fix this: 1. use the tool certtool from gnutls in package gnutls-bin. doc is in gnutls-doc or use the doc from the qemu/kvm packages and look their for vnc. 2. create a copy of /etc/ssl/certs/cacert.pem and reorder your certificates. gnutls expects just the opposite order as openssl :-( De oplossing: - Comment out TLSCipherSuite settings on upgrade from all versions prior to 2.4.7-5, and throw a debconf error to the user notifying them of this, since all OpenSSL cipher suite values are incompatible with GnuTLS. ===== Clock ===== Problem domU verzuipt in clocksource meldingen en is niet responsief. Workaround In your domU /etc/sysctl.conf add the line: xen.independent_wallclock=1. On the dom0, edit the configuration file of the domU (e.g. /etc/xen/foobar.cfg and add (or expand) the extra-line: extra="clocksource=jiffies". These settings can be activated without rebooting the domU. After editing the configuration files, issue # sysctl -p and echo "jiffies"> /sys/devices/system/clocksource/clocksource0/current_clocksource on the domU prompt. # sysctl -p # echo "jiffies"> /sys/devices/system/clocksource/clocksource0/current_clocksource Because the clock won't be relying on the dom0 clock anymore, you probably need to use ntp on the domU to synchronize it properly to the world. Na een reboot staat de clock op jiffies zonder het echo commando. In Xen luistert de domU zonder ntp naar de clock van de dom0 ==== tty ==== Domain is na create niet te benaderen. PTY allocation request failed on channel 0 stdin: is not a tty Voeg aan de xen-create het volgende toe: --role=udev xen-create-image --verbose --force --hostname=mi-m --ip=10.37.41.11 --netmask=255.255.255.128 --gateway=10.37.41.1 --size=8gb --debootstrap --dist=lenny --mirror=http://mirror.webhuis.nl:3142/ftp.nl.debian.org/debian --role=udev ===== lib/modules ===== Op de AMD-64: ontbreekt, vpn-router werkt niet Op de Intel machine werkt het wel. Oplossing: De dom0 was verkeerd geinstalleerd. Volg de wiki van debian.org en installeer xen-linx-system === find is your friend === * http://www.mysysad.com/2007/07/using-common-unix-find-command_07.html ==== Verwijderen ^M in directory tree ==== Het verwijderen van de vermaledijde "control M, of ^M" in alle bestanden in een hele directory gaat als volgt: <pre> find -type f -name "*.txt" -exec sed -i 's/^M//g' {} \; find . -name \*[xml..dtd..sh] | xargs tar cvf ~/configs.tar </pre> === Scripts === ==== Verwijderen bepaalde ASCII code in een bestand ==== Het is bedrijfszekerder om ASCII codes met directe referentie aan de code te wijzigen of te verwijderen: sed -i 's/\x00//g' asg-dump.txt ==== Octaal weergeven permissies ==== Gebruik dit statement om de permissies in octale vorm weer te geven. ls -l | awk '{k=0;for(i=0;i<=8;i++)k+=((substr($1,i+2,1)~/[rwx]/)*2^(8-i));if(k)printf("%0o ",k);print}' ls|while read i; do echo -ne "$i\t"; stat "$i"|sed -n -e 4p|cut -f2 -d" "|cut -b 2-5;done|awk '{print $2,$1}' ==== Backup volume over het network met dd en ssh ==== * http://www.pantz.org/software/dd/drivecopywithsshanddd.html <pre> dd if=/dev/dev-xen/data-disk | ssh user@10.99.99.99 dd of=/home/beheerder/data-disk dd if=/dev/dev-xen/data-disk | gzip -1 - | ssh user@10.99.99.99 dd of=/home/beheerder/data-image.gz </pre> ==== Restore volume ==== Restore gaat met: <pre> root@hist:~# dd if=wbhs-pkg-disk.tgz | gunzip -1 - | dd of=/dev/kvm-data/big-data mount -t ext3 /dev/kvm-data/big-data /mnt </pre> ==== Archiveren over het netwerk ==== <pre> tar cvf - . | gzip -c -1 | ssh user@10.99.99.99 cat ">" remote-tar-file.gz ssh target_address cat <localfile ">" remotefile </pre> ==== Restore MBR ==== If things get messed up, you can boot with a Linux CD, mount the partition containing /root (hda1 in this example) and put back the MBR with the command: dd if=/mnt/hda1/root/hda.boot.mbr of=/dev/hda bs=512 count=1 ==== Strippen characters ==== Null characters verwijderen: tr -d '\000' < adressen-android.csv > adressen-android-2.csv sed 's/\x0//g' adressen-android.csv > adressen-android-3.csv === Ubuntu Lucid === ==== Restore panel ==== Als de taskbar of het panel is overleden, open je met alt-F2 een commando venster: <pre> alt-F2 killall plasma-desktop ff wachte.... alt-F2 plasma-desktop </pre> that should do it. ==== smbmount ==== De smbmount als user levert bij Lucid Lynx problemen op. Het probleem ligt in de suid bit. De oplossing komt van een Ubuntu forum. dutchy@vampire:~$ mount.cifs //dragon/dutchy dragon/ Password: mount error(1): Operation not permitted Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) Dit is hetzelfe als: martin@dell:~$ smbmount //samba.webhuis.nl/share ~/share -o user=martin,pass=xxxxxxxx mount error(1): Operation not permitted Hetzelfde probleem geldt bij de umount operatie. De oplossing:<br/> Setting the set uid bit fixed the problem: dutchy@vampire:~$ sudo chmod +s /sbin/mount.cifs of root@dell:~# chmod +s /sbin/mount.cifs root@dell:~# chmod u+s /sbin/umount.cifs Sjoerd Visser heeft er een mooie tutorial over geschreven: http://www.sjoerd-visser.demon.nl/net-linux/samba.html#Shares%20mounten%20met%20smbmount <hr/> Terug naar: [[Main Page]]
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