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

Hits: 217Have 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: 1510Not 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: 174I 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: 237Setup 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: 589 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: 717I 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

How to ignore ansible SSH authenticity checking? RSA key fingerprint

Hits: 359Do you want to avoid those annoying messages The authenticity of host ‘xxx.xxx.xxx.xxx (xxx.xxx.xxx.xxx)’ can’t be established. RSA key fingerprint is xx:yy:zz:…. Are you sure you want to continue connecting (yes/no)? Simply add this to your /etc/ansible/ansible.conf file host_key_checking = false Source: How to ignore ansible SSH authenticity checking? – Stack Overflow

Network Throughput Testing with iPerf

Hits: 179Use Iperf to check network speed between instances Virtual machines and raw metal servers. iPerf is a command-line tool used in diagnosing network speed issues by measuring the maximum network throughput a server can handle. It is particularly useful when experiencing network speed issues, as you can use iPerf to determine which server is unable …

OpenStack Gets Its Swagger Back

Hits: 131While the US and European markets for OpenStack continue to grow slowly and steadily, much faster growth is attributed to the Chinese market, which has both a massive infrastructure need, and a tendency to be wary of the leading Western vendors.     Source: OpenStack Gets Its Swagger Back