Cloud Devops Automation

If you are installing the python3 on centos7 than it comes by default shipped with python 2.7.5 which is required by the core os of the centos. Now if you try to install through yum than you can't directly install the python3 instead you would require to install the  software collections first. Software collections is an community project which allows you to build, install and use the multiple version of software on same system without affecting default system packages. It will enable the multiple version of the programming languages which are not available in the core repositories. To install scl run the following command # yum install centos-release-scl To install the python3 run # yum install rh-python36 You will also need to install the 'Development tools' which are required for building python modules # yum groupinstall 'Development Tools' Python virtual environments allows you to install the python modules in isolated location for a specific pro...

Per region VPN Tunnels : Instead of building tunnels every time we a new VPC is created . It allows to simply attach the VPC to the transit gateway within the region which will already have a VPN established. Once attached, it will simply be a matter of adding routing propagations to establish the connectivity of the VPC with VPN. Attach to Transit Gateway once rather than peer to multiple VPCs : Every time a new VPC is created , It often times required to peer that VPC with other accounts and shared environments. With the Transit gateway, you can simply attach the VPC to the transit gateway and associate that attachment with the right routing domain and allow routes to propagate which will give that new VPC access to multiple VPCs and vice-versa.  Limitations:- The known limitation of the AWS Transit gateway is the fact that it does not support the cross region support for which Inter-region Vpc peering is required. Though is in the future pipeline and rather the c...