Manually reset the state of an instance

If an instance gets stuck in an intermediate state (e.g., “deleting”), you can manually reset the state of an instance using the nova reset-state command. This will reset it to an error state, which you can then delete. For example: $ nova reset-state c6bbbf26-b40a-47e7-8d5c-eb17bf65c485 $ nova delete c6bbbf26-b40a-47e7-8d5c-eb17bf65c485 You can also use the –active to force the instance back…

Common Errors and Fixes for OpenStack Compute

The Launchpad Answers site offers a place to ask and answer questions, and you can also mark questions as frequently asked questions. Credential errors, 401, 403 forbidden errors A 403 forbidden error is caused by missing credentials. Through current installation methods, there are basically two ways to get the novarc file. The manual method requires…

LTS and Release Cycle for Ubuntu

LTS is an abbreviation for “Long Term Support”. We produce a new Ubuntu Desktop and Ubuntu Server release every six months [diagram below]. That means you’ll always have the latest and greatest applications that the open source world has to offer. Ubuntu is designed with security in mind. You get free security updates for at…

Openstack Compute logs location

The log files are located here : /var/logs/nova Logfiles are : nova-api.log nova-cert.log nova-compute.log nova-dhcpbridge.log nova-manage.log nova-network.log nova-objectstore.log nova-scheduler.log nova-volume.log nova-xvpvncproxy.log  

Vmware tools autoinstall after kickstart

kickstart postinstall, you can read how to do this on the internet. wget http://foo/tools.tar.gz tar xzvf *.tar.gz cd directory-where-you-untarred vmware-tools-install.pl -d BINGO ! Giggidi Giggidi

Windows command line power control

While this is a Linux forum this came in REALLY handy so what the heck 🙂 Frustratingly hidden away, windows command for putting the machine into Hibernate and / or standby are hidden away in the api under the powrprof.dll library.   Shutdown %windir%\System32\shutdown.exe -s Reboot %windir%\System32\shutdown.exe -r Logoff %windir%\System32\shutdown.exe -l Standby %windir%\System32\rundll32.exe powrprof.dll,SetSuspendState Standby Hibernate %windir%\System32\shutdown.exe -h     OR…

Linux check all ips in a subnet with ping

Let’s say you have a subnet 192.168.1.0 / 24 and you want to scan all ip’s to see if any hosts are up: Type the following command, enter:   $ for ip in $(seq 1 254); do ping -c 1 192.168.1.$ip>/dev/null; [ $? -eq 0 ] && echo “192.168.1.$ip UP” || : ; done Output:…

Permanently set hostname in Ubuntu

Debian based systems use the file /etc/hostname to read the hostname of the computer at boot time and set it up using the init script /etc/init.d/hostname.sh One can edit the file /etc/hostname and change the hostname and then run: /etc/init.d/hostname.sh start Update /etc/hosts ip 127.0.0.1 respectively ( leave the localhost entry untouched) Steps: sudo vi…