Kibana server is not ready yet

I have just installed Kibana 7.3 on RHEL 8. The Kibana service is active (running).I receive Kibana server is not ready yet message when i curl to http://localhost:5601. My Elasticsearch instance is on another server and it is responding with succes to my requests. I have updated the kibana.yml with that elasticsearch.hosts:[“http://EXTERNAL-IP-ADDRESS-OF-ES:9200“] i can reach … Read more

What does “xmlns” in XML mean?

It defines an XML Namespace. In your example, the Namespace Prefix is “android” and the Namespace URI is “http://schemas.android.com/apk/res/android“ In the document, you see elements like: <android:foo /> Think of the namespace prefix as a variable with a short name alias for the full namespace URI. It is the equivalent of writing <http://schemas.android.com/apk/res/android:foo /> with regards to what it “means” when an XML … Read more

^=, -= and += symbols in Python

As almost any modern language, python has Assignment Operators so they can use them every time you want to assign a value to a variable after doing some arithmetic or logical operation, both (assignment and operation)are expressed compact way in one statement….

The Definitive C++ Book Guide and List

Beginner Introductory, no previous programming experience C++ Primer * (Stanley Lippman, Josée Lajoie, and Barbara E. Moo) (updated for C++11) Coming at 1k pages, this is a very thorough introduction into C++ that covers just about everything in the language in a very accessible format and in great detail. The fifth edition (released August 16, 2012) … Read more

iframe refuses to display

It means that the http server at cw.na1.hgncloud.com send some http headers to tell web browsers like Chrome to allow iframe loading of that page (https://cw.na1.hgncloud.com/crossmatch/) only from a page hosted on the same domain (cw.na1.hgncloud.com) : You should read that : https://developer.mozilla.org/en-US/docs/Web/Security/CSP https://developer.mozilla.org/en-US/docs/Web/Security/Same-origin_policy