Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "In light of this, cgroups is utilized here to limit resource usage."

A block of code is set as follows:

ENV key value
 ENV key1=value1 key2=value2 ...

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

metadata:
 name: nginx-external
  annotations:
    service.beta.kubernetes.io/aws-load-balancer-type: "nlb"

Any command-line input or output is written as follows:

$ docker run -p 80:5000 busybox /bin/sh -c \
  "while :; do echo -e 'HTTP/1.1 200 OK\n\ngood day'|nc -lp 5000; done"
$ curl localhost
good day

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "After clicking Create, the console will bring us to the following view for us to explore."