Managing port level security in OpenStack 

Hits: 337I am investigating why dpdk doesn’t work inside an instance.   The OpenStack platform, specifically Neutron (the networking component), uses the concepts of “ports” in order to connect the various cloud instances to different networks and the corresponding virtual networking devices like Neutron routers, firewalls etc. The default security on these ports is quite restrictive (and …

Running the AWS CLI and Python on Windows 10 in a Linux Bash shell – 4sysops

Hits: 391Enable the Windows Subsystem for Linux ^ Before we start anything and install the Linux distribution package for WSL, make sure you enable the “Windows Subsystem for Linux” optional feature on your machine. Running the following command from your PowerShell console will enable this feature. Open PowerShell as an administrator and run: 1 Enable-WindowsOptionalFeature -Online …

How to show the “Position” column in the new Google Search Console Performance Report?

Hits: 294In order to show the position column in Google Search Console, simply click on the Average position square towards the top. Then it will magically appear   How to show the “Position” column in the new Google Search Console Performance Report?   Source: How to show the “Position” column in the new Google Search …

Doctors Are Losing #Faith in IBM #Watson’s #AI. But does predict breakfast choice.

Hits: 275Have you been feeling like Ai apps respond like 5 year olds? Medicine is based on statistics not theory. after eight years of waiting with little in the way of results, several doctors told IEEE Spectrum that they’re getting fed up — bad news for IBM, but also a potential inflection point for the …

6 Effective Tips for Blocking Email Spam with Postfix SMTP Server

Hits: 2371Not so charming, mega spam! Tip #6: Using Public Anti-Spam Blacklists There are spam emails that are sent from servers that has a valid hostname, valid PTR record and can pass through grey listing. In this case, you can use blacklisting to reject spam. There are many public anti-spam blacklists online. You can use …

Chapter 5. Customizing the Ceph Storage Cluster – Red Hat Customer Portal

Hits: 177I was asked to fic journal size and max open files for ceph within Redhat  TripleO openstack templates. I will try to put it in Network environment template. parameter_defaults: CephConfigOverrides: journal_size: 2048 max_open_files: 131072 This will result in the following settings defined in the configuration file of your Ceph cluster: [global] journal_size: 2048 max_open_files: …

Disconnected Registry for Red Hat Openstack and Openshift

Hits: 307Setup disconnected Docker registry for Rhosp 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 subscription 4.    Hundreds of GB free, preferably a TB. It is wise to have /var as a separate mounted …

CentOS 7 : Dnsmasq : Install : Server World

Hits: 946 Install Dnsmasq which is the lightweight DNS forwarder and DHCP Server Software. [1] Install Dnsmasq. [root@dlp ~]# yum -y install dnsmasq [2] Configure Dnsmasq. [root@dlp ~]# vi /etc/dnsmasq.conf # line 19: uncomment (never forward plain names) domain-needed # line 21: uncomment (never forward addresses in the non-routed address spaces) bogus-priv # line 41: uncomment (query …

How to do multiline shell script in Ansible 

Hits: 1356I found the following works to run several commands in an ansible-playbook. This also shows the output. — – hosts: two gather_facts: no tasks: – name: Executing a Command Using Shell Module shell: date ls register: cat – debug: var=cat.stdout_lines Source: How to do multiline shell script in Ansible – Stack Overflow