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The planned follow up to the Ubiquiti UniFi AP deployment/RaspberryPi controller post about running an ELK stack on the controller is on hold; there are no preexisting binaries for the ARM platform and a successful compile from source has eluded me so far. So instead we’re going to walk through setting up an L2TP/IPSEC VPN up on Ubiquiti’s EdgeRouter line of routers. Ubiquiti has a good guide here that will get you 90% of the way there, but is missing a few key pieces of info.
I recently got fed up with the mediocre coverage and speeds of my home wireless network even after throwing DD-WRT on the pair of APs (Netgear and Linksys .11n) to eek out all the performance I could. So I decided to take the plunge and go up market a bit with a couple APs from Ubiquiti Networks.
I went with a pair of UAP (.11n) and UA-AC-LR (.11ac) units for a mix of coverage in light usage areas and better performance in high usage areas, along with a RaspberryPi 2 to act as the controller. Since the UniFi APs are becoming more popular among home users, and I can’t be the only one wary of putting management functions in the cloud, I decided to document the setup process. (more…)
Today I was asked to gather a list of all VMs within a given cluster and report on their disk usage (all the VMs are thick provisioned) and currently do not have a tool to perform a seemly simple task. After some searching I have found many versions of this script around the internet but none that quite suited me needs. I have modified about 50% of the original script to suit my needs and added these features.
Prompts for vCenter hostname or IP
Requires user to select a cluster
Queries vCenter for list of cluster names (for use above)
Limits results to specified cluster
Prompts for output filename
Default saves to current user’s Documents folder
Prints location of filename
Auto launches file once complete
I should also mention that I am not a script writer. My abilities exist in finding, understanding (most of the time), and modifying existing Powershell scripts. I will be unable to assist with drastic modifications to any script.
Requirements: VMware PowerCLI, vCenter Credentials with appropriate permissions
How to run: Save below script to .ps1 format and run from PowerCLI. No need to modify anything to make compatible with your environment.
Michael DeHaan, the author of the provisioning server application Cobbler and co-author of the Func framework for remote administration, developed the platform. It is included as part of the Fedora distribution of Linux, owned by Red Hat Inc., and is also available for Red Hat Enterprise Linux, CentOS, and Scientific Linux via Extra Packages for Enterprise Linux (EPEL) as well as for other operating systems. Ansible, Inc commercially supports and sponsors Ansible On 16 October, 2015, Red Hat Inc. announced that it had signed a definitive agreement to acquire Ansible, Inc.
After some research on how to install Ansible on Centos 7, I found this write up quite detailed.
“Ansible is a free & open source Configuration and automation tool for UNIX like operating system. It is written in python and similar to Chef or Puppet but there is one difference and advantage of Ansible is that we don’t need to install any agent on the nodes. It uses SSH for making communication to its nodes.
In this article we will install and configure Ansible in CentOS 7 and will try to manage its two nodes.”