This page (revision-14) was last changed on 23-Apr-2022 17:06 by Harry Metske

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Page References

Incoming links Outgoing links
OpenShift3
OpenShift3

Version management

Difference between version and

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[{TableOfContents}]
\\
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!! Runnable jar, DIY.
!! Runnable jar.
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My app of course fails because it requires one envvar ( %%warning How do I provide envvars in advance? Looks like I need the oc command for that %% )
==> Yes:
{{{
➜ ~ rhc set-env DROPWIZARD_YAML=src/main/resources/dropwizard.yml --app diy
Setting environment variable(s) ... done
}}}
My app of course fails because it requires one envvar ( %%warning How do I provide envvars in advance? %% )
At line 55 removed one line
The overview page BTW says my app is started, but it is not (I also get a 503, from a RedHat Apache server of course).
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I can also ssh into my gear, the ui says ''ssh 583f185e2d5271b8c6000069@diy-computerhok.rhcloud.com'' .
{{{
[diy-computerhok.rhcloud.com /]\> lsb_release -a
LSB Version: :base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch
Distributor ID: RedHatEnterpriseServer
Description: Red Hat Enterprise Linux Server release 6.7 (Santiago)
Release: 6.7
Codename: Santiago
[diy-computerhok.rhcloud.com /]\> java -version
java version "1.7.0_121"
OpenJDK Runtime Environment (rhel-2.6.8.1.el6_8-i386 u121-b00)
OpenJDK Server VM (build 24.121-b00, mixed mode)
}}}
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An old java version unfortunately.
!! Download oc/rhc cli
See [Installing the cli|https://docs.openshift.com/enterprise/3.0/cli_reference/get_started_cli.html#installing-the-cli]. However, now I need a RedHat account.\\
I found another location to download the command: [http://repo.openshift3roadshow.com/clients/oc-linux.tar.gz]
Extracted this one and copied to /usr/local/bin.
Syntax:
%%collapsebox
__oc command syntax__
{{{
➜ ~ oc
Developer and Administrator Client
This client exposes commands for managing your applications, as well as lower level
tools to interact with each component of your system.
To create a new application, you can use the example app source. Login to your server and then
run new-app:
$ oc login
$ oc new-app centos/ruby-22-centos7~https://github.com/openshift/ruby-hello-world.git
This will create an application based on the Docker image 'centos/ruby-22-centos7' that builds
the source code at 'github.com/openshift/ruby-hello-world.git'. A build will start automatically and
a deployment will start as soon as the build finishes.
Once your application is deployed, use the status, get, and describe commands to see more about
the created components:
$ oc status
$ oc describe deploymentconfig ruby-hello-world
$ oc get pods
You'll be able to view the deployed application on the IP and port of the service that new-app
created for you.
You can easily switch between multiple projects using 'oc project <projectname>'.
Basic Commands:
types An introduction to concepts and types
login Log in to a server
new-project Request a new project
new-app Create a new application
status Show an overview of the current project
project Switch to another project
Build and Deploy Commands:
start-build Start a new build
build-logs Show logs from a build
deploy View, start, cancel, or retry a deployment
rollback Revert part of an application back to a previous deployment
new-build Create a new build configuration
cancel-build Cancel a pending or running build
import-image Imports images from a Docker registry
scale Change the number of pods in a deployment
tag Tag existing images into image streams
Application Modification Commands:
get Display one or many resources
describe Show details of a specific resource or group of resources
edit Edit a resource on the server
env Update the environment on a resource with a pod template
volumes Update volume on a resource with a pod template
label Update the labels on a resource
annotate Update the annotations on a resource
expose Expose a replicated application as a service or route
stop Deprecated: Gracefully shut down a resource by name or filename.
delete Delete resources by filenames, stdin, resources and names, or by resources and label selector.
Troubleshooting and Debugging Commands:
explain Documentation of resources.
logs Print the logs for a resource.
rsh Start a shell session in a pod
rsync Copy files between local filesystem and a pod
exec Execute a command in a container.
port-forward Forward one or more local ports to a pod.
proxy Run a proxy to the Kubernetes API server
Advanced Commands:
create Create a resource by filename or stdin
replace Replace a resource by filename or stdin.
patch Update field(s) of a resource by stdin.
process Process a template into list of resources
export Export resources so they can be used elsewhere
run Run a particular image on the cluster.
attach Attach to a running container.
policy Manage authorization policy
secrets Manage secrets
convert Convert config files between different API versions
Settings Commands:
logout End the current server session
config Change configuration files for the client
whoami Return information about the current session
Other Commands:
version Display version
help Help about any command
Use "oc help <command>" for more information about a given command.
Use "oc options" for a list of global command-line options (applies to all commands).
}}}
%%
But I cannot find which endpoint to use.\\
Maybe I should use the rhc command, see [https://developers.openshift.com/getting-started/debian-ubuntu.html] for installing.
You have to install ruby-full first and then {{sudo gem install rhc}}.\\
Next is the {{rhc setup}} cmd:
{{{
➜ ~ rhc setup
OpenShift Client Tools (RHC) Setup Wizard
This wizard will help you upload your SSH keys, set your application namespace, and check that other programs like Git are properly installed.
If you have your own OpenShift server, you can specify it now. Just hit enter to use the server for OpenShift Online: openshift.redhat.com.
You can add more servers later using 'rhc server'.
}}}
Then it hangs...
When specifying all arguments it works:
{{{
➜ ~ rhc setup --server openshift.redhat.com --clean --rhlogin harry.metske@gmail.com --password <your password>
OpenShift Client Tools (RHC) Setup Wizard
This wizard will help you upload your SSH keys, set your application namespace, and check that other programs like Git are properly installed.
Using harry.metske@gmail.com to login to openshift.redhat.com
OpenShift can create and store a token on disk which allows to you to access the server without using your password. The key is stored in your home directory and should be kept secret. You can delete the key at any time by running 'rhc logout'.
Please enter "yes" or "no".
yes
Generating an authorization token for this client ... lasts about 1 month
Saving configuration to /home/metskem/.openshift/express.conf ... done
Checking for git ... found git version 2.7.4
Checking common problems .. done
Checking for a domain ... computerhok
Checking for applications ... found 1
diy http://diy-computerhok.rhcloud.com/
You are using 1 of 3 total gears
The following gear sizes are available to you: small
Your client tools are now configured.
}}}
!! Developing
Our source code has been copied from the github repo to an internal RedHat repo. The overview page tells use what this RedHat git repo is: __ssh://583f185e2d5271b8c6000069@diy-computerhok.rhcloud.com/~/git/diy.git/__ . %%warning I don't see an option for an https URL %%
So we (locally) add this remote repo : {{git remote add openshift ssh://583f185e2d5271b8c6000069@diy-computerhok.rhcloud.com/~/git/diy.git/}}.
We also have to provide special [Action hooks|https://developers.openshift.com/managing-your-applications/action-hooks.html] because we have to specify how to start our application, and we have to specify the port to listen on (the latter can be solved better/differently I think).
So created 3 additional scripts in our git repo:
* .openshift/action_hooks/build
* .openshift/action_hooks/deploy
* .openshift/action_hooks/start
Containing:
__build__
%%prettify
{{{
#!/bin/bash
gradle assemble
}}}
%%
__deploy__
%%prettify
{{{
#!/bin/bash
echo "current dir 1: `pwd`"
cd $OPENSHIFT_REPO_DIR
echo "current dir 2: `pwd`"
ls -la
sed -i 's/@OPENSHIFT_DIY_IP@/'"$OPENSHIFT_DIY_IP"'/g' src/main/resources/demoapp1.openshift.yaml
sed -i 's/@OPENSHIFT_DIY_PORT@/'"$OPENSHIFT_DIY_PORT"'/g' src/main/resources/demoapp1.openshift.yaml
}}}
%%
__start__
%%prettify
{{{
#!/bin/bash
cd $OPENSHIFT_REPO_DIR
export DROPWIZARD_YAML=src/main/resources/demoapp1.openshift.yaml
nohup java -jar build/libs/demoapp1-0.1.0.jar > ${OPENSHIFT_DIY_LOG_DIR}/demoapp1.log 2>&1 &
}}}
%%
Then when we git push (1), this was before we had the bulid script :
{{{
➜ demoapp1 git:(master) ✗ git push openshift master
Counting objects: 5, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (4/4), done.
Writing objects: 100% (5/5), 474 bytes | 0 bytes/s, done.
Total 5 (delta 2), reused 0 (delta 0)
remote: Stopping DIY cartridge
remote: Building git ref 'master', commit cfb642e
remote: Preparing build for deployment
remote: Deployment id is fcb8b14e
remote: Activating deployment
remote: Starting DIY cartridge
remote: -------------------------
remote: Git Post-Receive Result: success
remote: Activation status: success
remote: Deployment completed with status: success
To ssh://583f185e2d5271b8c6000069@diy-computerhok.rhcloud.com/~/git/diy.git/
4c0c10b..cfb642e master -> master
}}}
It tells us all success, but the app still fails (503 response). How to diagnose further, the UI does not show anything about status or logs. Let's try the ssh again.
Then we added the build hook script and pushed again:
{{{
➜ demoapp1 git:(master) ✗ git push openshift master
Counting objects: 6, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (4/4), done.
Writing objects: 100% (6/6), 497 bytes | 0 bytes/s, done.
Total 6 (delta 2), reused 0 (delta 0)
remote: Stopping DIY cartridge
remote: Building git ref 'master', commit 1ec49f3
remote: /var/lib/openshift/583f185e2d5271b8c6000069/app-root/runtime/repo/.openshift/action_hooks/build: line 2: gradle: command not found
remote: An error occurred executing 'gear postreceive' (exit code: 127)
remote: Error message: CLIENT_ERROR: Failed to execute action hook 'build' for 583f185e2d5271b8c6000069 application diy
remote:
remote: For more details about the problem, try running the command again with the '--trace' option.
To ssh://583f185e2d5271b8c6000069@diy-computerhok.rhcloud.com/~/git/diy.git/
13bd4bc..1ec49f3 master -> master
}}}
There is no gradle available (only mvn. And which version:
{{{
[diy-computerhok.rhcloud.com 583f185e2d5271b8c6000069]\> mvn --version
Apache Maven 3.0.4 (r1232336; 2012-12-18 14:36:37-0500)
Maven home: /usr/share/java/apache-maven-3.0.4
Java version: 1.7.0_121, vendor: Oracle Corporation
Java home: /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.121/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "2.6.32-642.6.2.el6.x86_64", arch: "i386", family: "unix"
}}}
%%warning This is going nowhere.... we need something with containers%%
!! Running containers
The idea is to just a container from an image, and that envvars should determine which jar file to run.
....created subimage from ......
pushed to internal docker registry
Fire up with oc:
{{{
[2016-12-01 13:11.32] /drives/g/tools
[metskeh.RB904184] ➤ ./oc new-app docker-registry.linux.rabobank.nl/online.io/javarunner:0.1 --env JARFILE_URL="http://lsrv4008.linux.rabobank.nl/artifacts/dropwizardtest-1.4/dropwizardtest-1.4.jar"
--> Found Docker image be874f9 (2 hours old) from docker-registry.linux.rabobank.nl for "docker-registry.linux.rabobank.nl/online.io/javarunner:0.1"
* An image stream will be created as "javarunner:0.1" that will track this image
* This image will be deployed in deployment config "javarunner"
* [WARNING] Image "javarunner" runs as the 'root' user which may not be permitted by your cluster administrator
* The image does not expose any ports - if you want to load balance or send traffic to this component
you will need to create a service with 'expose dc/javarunner --port=[port]' later
--> Creating resources with label app=javarunner ...
ImageStream "javarunner" created
DeploymentConfig "javarunner" created
--> Success
Run 'oc status' to view your app.
}}}
Why does it take so long on my Rabo laptop on E2B (VDI is much faster):
{{{
[MetskeH.RB344164] ➤ time ./oc status -v
In project testproject (demoapp1) on server https://ose-master-api.linux.rabobank.nl:8443
svc/javarunner - 192.168.215.67:8080
dc/javarunner deploys imagestreamtag/javarunner:0.2
#1 deployed 19 hours ago - 1 pod
Warnings:
* container "javarunner" in pod/javarunner-1-s8ylj has restarted 234 times
* The image trigger for dc/javarunner will have no effect until imagestreamtag/javarunner:0.2 is imported or created by a build.
View details with 'oc describe <resource>/<name>' or list everything with 'oc get all'.
real 0m 37.28s
user 0m 0.01s
sys 0m 0.01s
}}}
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[{ALLOW edit metskem}]
This page (revision-14) was last changed on 23-Apr-2022 17:06 by Harry MetskeTop