By October 03, 2018

Public DNS Servers Google: Google FAQ 8.8.8.8 8.8.4.4 Level 3 : 4.2.2.2 4.2.2.1 The new kid on the block is Cloudflare 1.1.1.1 1.0.0.1 https://mozilla.cloudflare-dns.com/ https://developers.cloudflare.com/1.1.1.1/dns-over-https/json-format/


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By September 01, 2018

I don’t normally post personal life experiences on this blog. But this is a story that needs to be told. My fiancee’ and I recently went to Baltimore inner harbor. I had to visit University of Maryland to renew my Red Hat Certification. So we booked a room at this well known Hilton hotel. I


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By August 27, 2018

Can I safely delete files in /var/cache/PackageKit/metadata/updates/packages? You can refresh the cache using pkcon refresh force -c -1


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By August 25, 2018

juypterhub_setup JupyterHub setup¶ Created by OpenKB.org Reference links https://jupyterhub.readthedocs.io/en/latest/quickstart.html#prerequisites https://jupyter-notebook.readthedocs.io/en/stable/public_server.html Lab setup based on the manual using Centos 7.5 1. Installation . Step 1 and 2 can be placed in a bash script.¶ yum -y update && yum -y install epel-release.noarch npm gcc gcc-c++ python36 python34 python34-devel python34-pip python36-setuptools python36-libs vim git pandoc texlive texlive-*.noarch


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By August 08, 2018

File \”/tmp/ansible_PzNRht/ansible_modlib.zip/ansible/module_utils/urls.py\”, line 340, in <module>\r\nAttributeError: ‘module’ object has no attribute ‘HTTPSHandler’\r\n”, “msg”: “MODULE FAILURE”, “r   This is due to Python being unable to import the ssl module. To see the actual error, you will need to log into the server and try to import ssl .   Python<version> import ssl File “/usr/local/lib/python2.7/ssl.py”, line


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