rhuss

[INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ kubernetes-client ---
[INFO] io.fabric8:kubernetes-client:jar:1.3.74-SNAPSHOT
[INFO] +- io.fabric8:kubernetes-model:jar:1.0.42:compile
[INFO] |  +- com.fasterxml.jackson.module:jackson-module-jaxb-annotations:jar:2.6.3:compile
[INFO] |  \- javax.validation:validation-api:jar:1.1.0.Final:compile
[INFO] +- com.squareup.okhttp:okhttp:jar:2.7.2:compile
[INFO] |  \- com.squareup.okio:okio:jar:1.6.0:compile
[INFO] +- com.squareup.okhttp:logging-interceptor:jar:2.7.2:compile
[INFO] +- com.squareup.okhttp:okhttp-ws:jar:2.7.2:compile
[INFO] +- org.slf4j:slf4j-api:jar:1.7.13:compile

rhuss

How to setup an OpenShift registry

• Create registry with oadm

oadm registry --latest-images --create \
              --credentials=/var/lib/openshift/openshift.local.config/master/openshift-registry.kubeconfig

• Create route (optional, alternatively you can use also the internal ip of the registry service later)

rhuss

gofabric8 IDE setup for IntelliJ IDEA

In Shell:

• export $GOPATH=~/go/workspace
• mkdir -p $GOPATH
• export PATH=$PATH:$GOPATH/bin
• cd ~/go
• rm -rf workspace/*
• go get github.com/tools/godep

rhuss

brew install libvirt
sudo ln -s /opt/vagrant/embedded/include/ruby-2.0.0/{universal-darwin12.6.0,x86_64-darwin12.6.0}
ARCHFLAGS='-arch x86_64' \
CONFIGURE_ARGS="with-libvirt-include=/usr/local/include/libvirt:/opt/vagrant/embedded//include/ruby-2.0.0/universal-darwin12.6.0/ with-libvirt-lib=/usr/local/lib" \
  vagrant plugin install vagrant-libvirt

rhuss

def exec(cmd) {
  println cmd
  def process = new ProcessBuilder([ "sh", "-c", cmd])
                                    .directory(new File("/tmp"))
                                    .redirectErrorStream(true) 
                                    .start()
  process.outputStream.close()
  process.inputStream.eachLine {println it}
  process.waitFor();
  return process.exitValue()

rhuss

# Build for 206 MB JRE 1.8.0_60 (192 MB in size) with Alping and glibc

FROM alpine:3.2

ENV JRE=jre1.8.0_60 \
    JAVA_HOME=/opt/jre

# That's the an EA from OpenJDK.net 

# Courtesy to https://github.com/frol/docker-alpine-oraclejdk8 from where the setup of glibc is borrowed

rhuss

With an empty OpenShift 0.5.1 started up (except for some services) within a Vagrant setup, I noticed, that /var/log/messages grows very fast because of the requests logged below. I could (and have) set the loglevel to WARN but this doesn't solve the issue of many requests needs to be processed by the Docker daemon which leads to a constant CPU usage of about 4-5%. I wonder where these requests for container meta information comes from and why they are sent in such a high frequency (look at the timestamps).

May 21 13:06:52 localhost journal: Suppressed 741 messages from /system.slice/docker.service
May 21 13:06:52 localhost docker: time="2015-05-21T13:06:52Z" level=info msg="GET /containers/json"
May 21 13:06:52 localhost docker: time="2015-05-21T13:06:52Z" level=info msg="+job containers()"
May 21 13:06:52 localhost docker: time="2015-05-21T13:06:52Z" level=info msg="-job containers() = OK (0)"
May 21 13:06:52 localhost docker: time="2015-05-21T13:06:52Z" level=info msg="GET /containers/json?all=1"

rhuss

1430820552: Execution time: 1 ms
1430820552: Response: {"timestamp":1430820552,"status":200,"request":{"mbean":"java.lang:type=Runtime","attribute":"Name","type":"read"},"value":"11257@Tichny.local"}
1430820552: Execution time: 0 ms
1430820552: Response: {"timestamp":1430820552,"status":200,"request":{"mbean":"java.lang:type=Runtime","attribute":"VmVersion","type":"read"},"value":"24.75-b04"}
1430820552: Execution time: 0 ms
1430820552: Response: {"timestamp":1430820552,"status":200,"request":{"mbean":"java.lang:type=Runtime","attribute":"VmName","type":"read"},"value":"Java HotSpot(TM) 64-Bit Server VM"}
1430820552: Execution time: 0 ms
1430820552: Response: {"timestamp":1430820552,"status":200,"request":{"mbean":"java.lang:type=Runtime","attribute":"VmVendor","type":"read"},"value":"Oracle Corporation"}
1430820552: Execution time: 0 ms
1430820552: Response: {"timestamp":1430820552,"status":200,"request":{"mbean":"java.lang:type=Runtime","attribute":"Uptime","type":"read"},"value":98185}

rhuss

<plugin>
  <groupId>org.jolokia</groupId>
  <artifactId>docker-maven-plugin</artifactId>
  <version>${docker.maven.plugin.version}</version>
  
  <configuration>
      <image>
         <id>tomcat</id>
         <name>consol/tomcat-7.0</name>
         <run>

rhuss

#!/bin/sh

usage ()
{
  cat <<EOF
docker-enter -- Enter a running container via boot2docker and nsenter 

Usage: docker-enter <container_name_or_ID> [command]

See https://github.com/jpetazzo/nsenter for details.