Resolve .local Through Nameserver With Netplan

When using netplan it is easy to force .local DNS requests to go to you nameservers instead of being only resolved locally (the default and standard).

This also works with all other strange .WHATEVER domains you may have lying around in your organization.

Snippet from netplan configuration:

 nameservers:
        addresses:
          - X
          - Y
        search:
          - local
          - myotherstupiddomain

DNS Resolution Everywhere

Usually at leas one of those is present on any system dig nslookup host But sometimes the usual suspects don’t work, especially in container-land. After trying them you may try some more involved/unknown things: getent Part of glibc, this will probably work on nearly every system. getent hosts example.org Or, if you specifically want to query A or AAAA records. getent ahostsv4 example.org getent ahostsv6 example.org Using Python2 Or Python3 Given this depends on glibc it is more of a alternative than another real solution [Read More]

curl: Modify DNS Resolution

You can intercept normal name resolution in curl with the --resolve parameter allowing you to do things like talk to a specific site of a DNS load-balanced setup or talk to a new deployment not yet made productive. You can specify the resolve option multiple times so you can even catch redirects and move them to where you want as well. It’s important to note that this intercept does only work on the ports you specify in the entries. [Read More]

How SELinux screws with scripts when run over VMware Tools

SELinux by default prohibits certain things from working through VMware tools (Ansible connection or plain API). This can be solved two ways: Disabling SELinux: BAD, but easy Writing a custom SELinux policy: complicated but more secure Note: Adding/Changing this policy through a VMware tools connection is thankfully possible Example policy This policy is the base for a VMware tools policy and allows entering the rpm context (yum). module custom-vmtools 1. [Read More]