Purpose

The tool will push local files into kubernetes containers to support local development in a kubernetes environment.

The tool will use 'kubectl cp' and 'kubectl exec' to push and validate files in the container. No installation of components in the cluster are needed. Only a basic commandset 'bash', 'ls', 'mkdir', 'rm' is recommended in the container.

Program Arguments

Usage:
 kpush [options] [cmd] [job filter]*

Argument/Option	Description
--help	Show usage
-c	Set the configuration directory or file, defaut ~/.kpush/config
-i	Global interval in milliseconds to wait between status output in watch mode, default 5000 (5sec)
-l <level>	Set the log level: trace, debug, info (default), warn, error, fatal
-t <period>	A period of time backward for the command touch, e.g. 2h, 1d, 2w, 30min
test	Test which files would be pushed, you can use also option t to modify the last update time.
push	Command push once
pushall	Command push all data
watch	Command push every second in a loop, press Ctrl-C to exit
touch	Command touch the update time to now, use option -t
reset	Command set the update time to 1970
info	Command to show current target configuration and the last update time
job filter	List of jobs to execute. All other jobs will be ignored. By default all jobs will be executed.

Configuration

For each job push a yaml file in the configuration folder.

Main Section

Parameter	Type	Description
name	Text	Name of the configuration, for log file (default is the file name without extension)
description	Text	Description of the configuration
namespace	Text	Kubernetes namespace
pod	*Text	Kubernetes name of the pod
container	Text	Kubernetes container inside of the pod
enabled	Boolean	Disable the job (default true)

Watch Section

Parameter	Type	Description
name	Text	Name of the configuration, for log file
source	*Text	Local path to the source directory
target	*Text	Remote path to the target directory
filter	List	List of filters to filter the local files and directories
algorithm	Text	Implementation to use to watch and transport files, default 'simple'
interval	Number	Interval in milliseconds to wait between file scans in watch mode, default global interval
enabled	Boolean	Disable the watch section (default true)

Filters

Parameter	Description
contains	Accept if path contains the value
notcontains	Deny if the path contains the value
regex	Accept if the path matches the value as regex
notregex	Deny if the path matches the value as regex
namecontains	Accept if the name contains the value
notnamecontains	Deny if the name contains the value
dircontains	Accept directory if the name contains the value
notdircontains	Deny directory if the name contains the value

Simple algorithm

Note	algorithm: simple

A algorithm using kubectl to transport files. It’s using kubectl cp and kubectl exec with ls, mkdir. The sync will store the last sync time beside the configuration file as *.kpush file. If no file is found the current time is used.

If init is enabled, initial it will transport only non existing files.

Parameter	Type	Description
ignoreInit	bool	Ignore initial process, default true
rememberLastUpdated	bool	default false

The additional parameter in Main Section named kubectl can be used to change the path to the kubectl binary.

Example

name: mhus to karaf
description: push all changes in local repository mhus into the karaf container

namespace: mhus
pod: server
container: karaf

properties:
- versions.properties

watch:
- name: Repo mhus
  source: ~/.m2/repository/de/mhus
  target: /home/user/.m2/repository/de/mhus
  filter:
  - contains ""

Examples

Create the file project1.yaml in ~/.kush/config:

pod: project-0
container: karaf

watch:
- name: MVN Repo
  source: ~/.m2/repository/de/mhus
  target: /home/user/.m2/repository/de/mhus
  filter:
  - contains "7."

This will push all files with version 7.* to the pod project-0.

1. kpush push project1 will not push files because it’s the first start and the update timestamp will be now.

2. compile some maven projects in /home/user/.m2/repository/de/mhus

3. kpush push project1 will now push the compiled files

4. kpush push project1 will not push any new files

5. kpush -t 6h touch project1 set the update timestamp to 6 hours in the past

6. kpush push project1 will now push the compiled files of the last 6 hours

kpush watch will continuous push files.