Posted on Thu 30 June 2016 in Linux • Tagged with ceph, kvm, linux, notepad • 1 min read
Sometimes my ceph-(test!)deployments inside a VM failed.
The Problem is that the kernel/cpu can not provide enough entropy (random numbers) for the ceph-create-keys command - so it stuck/hang. It is not a ceph problem! This can also happen with ssl commands.
But first things first - we need …
Posted on Mon 29 February 2016 in openstack • Tagged with Openstack, SUSE Cloud 5, SUSE Cloud 6, linux, openstack, suse • 2 min read
Switching the language in the dashboard ends with a error.
"day is out of range for month"
eg. https://bugs.launchpad.net/horizon/+bug/1551099
[Mon Feb 29 09:20:05 2016] [error] Internal Server Error: /settings/
[Mon Feb 29 09:20:05 2016] [error] Traceback (most recent call last …Posted on Fri 04 September 2015 in Linux • Tagged with ovs, linux, notepad, openflow, openvswitch • 2 min read
ovs-ofctl del-flow BRIDGE
ovs-ofctl add-flow BRIDGE priority=500,in_port=1,actions=output:2
ovs-ofctl add-flow BRIDGE priority=500,in_port=2,actions=output:1
ovs-ofctl dump-flows BRIDGE
ovs-ofctl del-flow BRIDGE
ovs-ofctl add-flow BRIDGE dl_src=00:00:00:00:00:01,dl_dst=00:00:00:00:00:02 …Posted on Tue 11 August 2015 in Linux • Tagged with Gentoo, linux, notepad, initrd • 1 min read
Preparations
mkdir -p /usr/src/initramfs/{bin,lib/modules,dev,etc,mnt/root,proc,root,sbin,sys}
cp -a /dev/{null,console,tty,sda*} /usr/src/initramfs/dev/
busybox
USE="static make-symlinks -pam -savedconfig" emerge --root=/usr/src/initramfs/ -av busybox
LVM
LVM provides already a static binary :)
cp /sbin …Posted on Fri 06 March 2015 in Linux • Tagged with ldap, Linux, notepad • 1 min read
A more or less initial configuration for openldap (>2.4)
##
# to import run:
# ldapmodify -Y EXTERNAL -H ldapi:/// -f $filename
#
# to verfiy run:
# ldapsearch -Y EXTERNAL -H ldapi:/// -b "olcDatabase={1}hdb,cn=config"
#
# to create a password:
# slappasswd -h {SSHA} -s admin
##
dn: olcDatabase={1}hdb,cn=config
changetype …Posted on Wed 11 February 2015 in Linux • Tagged with fritzbox, upnp, notepad, linux • 1 min read
curl "http://fritz.box:49000/igdupnp/control/WANCommonIFC1" -H "Content-Type: text/xml; charset="utf-8"" -H "SoapAction:urn:schemas-upnp-org:service:WANCommonInterfaceConfig:1#GetAddonInfos" sion='1.0' encoding='utf-8'?> <s:Envelope s:encodingStyle='http://schemas.xmlsoap.org/soap/encoding/' xmlns:s='http://schemas.xmlsoap.org/soap/envelope/'> <s:Body> <u:GetAddonInfos xmlns …Posted on Mon 05 January 2015 in Linux • Tagged with jboss, linux, notepad • 1 min read
During a consulting project i had some trouble with the following environment
Loadbalancer >> Apache >> Tomcat / JBoss
Each request ended in a 400 Bad Request but the configuration looks good and works fine with other projects.
In the end we made some configuration modifications to the apache and tomcat.
Posted on Wed 13 August 2014 in linux • Tagged with systemd, linux • 1 min read
Rescue Mode
cmdline=...systemd.unit=rescue.target
Analyzing the boot process
systemd-analyze
systemd-analyze blame
systemd-analyze plot > /tmp/plot.svg
Start/Stop/Disable services
systemctl start/stop/restart/mask [service]
systemctl daemon-reload
systemctl list-units --type=[timer,service,target,mounts,...]
Journal
journalctl -u ssh
\_PID=1
-b
Custom unit
Posted on Thu 19 June 2014 in Linux • Tagged with windows, hex, msdm, linux, notepad • 1 min read
[root@localhost ~]# hexdump -C /sys/firmware/acpi/tables/MSDM
00000000 4d 53 44 4d 55 00 00 00 03 d3 4c 45 4e 4f 56 4f |MSDMU.....LENOVO|
00000010 54 50 2d 47 32 20 20 20 70 25 00 00 50 54 4c 20 |TP-G2 p%..PTL |
00000020 02 …Posted on Mon 16 June 2014 in Linux • Tagged with git, HowTo, Linux, github, notepad • 1 min read
git remove -v
# git remote add
git remote add upstream https://github.com/foo/bar.git
git remove -v
# git fetch
git fetch upstream
git checkout master
# git merge /
git merge upstream/master