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Minishift – OS X installation issues – No RBAC policy matched

When trying to install Minishift on Mac OS X, I had an issue with adding cluster-admin rights to developer user. This is the error: % oc adm policy add-cluster-role-to-user cluster-admin developer Error from server (Forbidden): clusterrolebindings.rbac.authorization.k8s.io is forbidden: User “system” cannot list clusterrolebindings.rbac.authorization.k8s.io at the cluster scope: no RBAC policy matched The problem is, brew […]

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Introspection of baremetal nodes fails with ‘No hypervisor matching’ 

Introspection fails due to use of Host Name instead of UUID   When I do introspection on baremetal servers that will be used as for Redhat TripleO Openstack 13 (This is the same as RDO Queens)  I start with just one. Before this I import the instackenv.json file with all of the baremetal server details […]

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Cleanly Delete Openstack Overcloud For Re-Deployment

Delete the Overcloud so that your next deployment will be as expected   When you need to re-deploy your Overcloud you should do this in the cleanest way. The cleanest way means that all resources are utterly deleted and un-installed before running the deploy again. Do this by running: $ openstack overcloud delete overcloud In the […]

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Setup a Disconnected Docker Registry for Red Hat Openstack 13

Setup disconnected Docker registry for Rhosp 13 Pre-requisites:1.    Server for registry that has 2 nics to connect to internet and disconnected servers2.    Director configured with latest minor release3.    Current Redhat subscription4.    Hundreds of GB free, preferably a TB. It is wise to have /var as a separate mounted volume. On registry run:$ yum update -y […]

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How to set a root password for your Openstack images

Login via console to your failed openstack deployment   While installing Redhat Openstack on Baremetal with lots of complicated networking, you might need to access Linux via the console.  Redhat images do not come with a default username and password. So you need to configure the overcloud-full image to have a default password for root.$ sudo […]

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Test whether your Openshift is installed and working

Here are some common concepts  that need to be running on your systems, in order to be relavent: Openshift microservices docker kubernetes pods Work with Docker as microservices saves compute recources, However, it requires re-thinking how development is done. Microservices also enable Continuous Integration of changes to large applications. Red Hat OpenShift is an open source […]

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linux command line

How to avoid entering passwords when SSH to remote machine

  1. Introduction Octopus Computer Solutions is a leading Virtual Private Server provider in Israel. We provide Shared hosting for WordPress websites and VPS for high tech companies. When we are running rsync or just connect a lot to a remote machine running SSH you’d like to avoid entering the password each time. This is […]

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How to Edit Static Routes In A Linux Machine

Introduction On any linux machine, if you add a route through the command line, after reboot or network restart the route will be deleted. There are couple of ways to keep the route after a reboot/network restart. One of the ways is to create and edit /etc/sysconfig/static-routes :   Static route configuration for HOST If you type […]

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How to Backup a Folder with a Batch file

The following batch script below, copies a folder to a folder. The folder is created with a name according to date that the script is run. The script will output a log file of the operation – files which were copied will be logged. This script is intended only for WINDOWS machines. (XP and above) […]

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