Error | GoLinuxCloud

Solved: lvextend new size given (xx extents) not larger than existing size (xx extents)

The other day while trying to recover my LVM2 volume, I was doing some POC work and while using lvextend I encountered this error "New size given (XXX extents) not larger than existing size (XXX ...

How to fix "pvs shows unknown device" in RHEL/CentOS 7/8

remove a physical volume listed as an unknown device. pvs shows unknown device in redhat. pvs couldn't find device with uuid. unknown linux device mapper. device for pv not found or rejected by a filter. ...

How to install multi node openstack on virtualbox with packstack on CentOS 7

install multi node openstack on viirtualbox using centos7

In this article I will share the steps to install multi node OpenStack on VirtualBox using CentOS 7 Linux. Packstack is used to perform multi node OpenStack deployment mostly for POC purpose as it does ...

Guide to troubleshoot Cluster Resource (RHEL / CentOS 7)

Before you start learning to troubleshoot cluster resource related topics in cluster, you must be familiar with Cluster Architecture. In my last article I had shared the steps to configure HA Cluster and create a ...

Solved: ironic node-delete is associated with instance

You may get this error "ironic node-delete is associated with instance" while trying to delete an ironic node which has an active instance. This means that your overcloud deployment is either partially complete or successfully complete ...

How to troubleshoot OpenStack ironic introspection

I have already written an article to fix "No Valid Host Was Found. Not Enough Hosts Available" which is one of most common problem seen during overcloud deployment. The discovery and introspection process must run ...

Solved: vncserver service failed a configured resource limit was exceeded

In my last article I shared the step by step guide to tigervnc server on RHEL 7 Linux. Now let me help you troubleshoot one of the most common issue with tigervnc service. I got ...

Solved "No valid host was found. not enough hosts available"

I got this error while performing my Overcloud deployment using TripleO. During my trial run of Openstack configuration I got this error message "No valid host was found. There are not enough hosts available" which ...