ipedrazas

kubectl get pods | grep Evicted | awk '{print $1}' | xargs kubectl delete pod

theundefined

Kubernetes + HAProxy sticky session affinity

1. Make sure you have balance source in haproxy.
2. Backend server section in haproxy config should have all your k8s nodes.
3. sessionAffinity in k8s is irrelevant.
4. Exposed k8s service need to have nodePort set and this annotation:

kubectl annotate service myService service.beta.kubernetes.io/external-traffic=OnlyLocal

This will cause internal k8s loadbalancer on nodeⁿ to route traffic only to pod on nodeⁿ. From Haproxy point of view it will look like nodeⁿ:nodePort === pod on nodeⁿ:port thus disabling k8s LB completly.

dwhjames

import scala.concurrent._
import java.util.concurrent.atomic.AtomicReference

  def interruptableFuture[T](fun: Future[T] => T)(implicit ex: ExecutionContext): (Future[T], () => Boolean) = {
    val p = Promise[T]()
    val f = p.future
    val aref = new AtomicReference[Thread](null)
    p tryCompleteWith Future {
      val thread = Thread.currentThread
      aref.set(thread)

schmmd

import scala.xml._

val scalaVersion = args.headOption

def quote(s: String) = "\"" + s + "\""

val xml = XML.loadString(scala.io.Source.stdin.getLines.mkString("\n"))

val name = (xml \ "artifactId").text

larsar

# The VirtualBox documentation[1] for how to install guest additions 
# for Linux on a virtual host is somewhat messy. So here is what 
# I did to make it work.

# Install the packages required
yum update
yum install gcc kernel-devel make

reboot

gclaramunt

package my.collections

class CirculrBufferIterator[T](buffer:Array[T], start:Int) extends Iterator[T]{
  var idx=0
  override def hasNext = idx<buffer.size
  override def next()={
    val i=idx
    idx=idx+1
    buffer(i)
  } 

terrancesnyder

#! /bin/sh
# ==================================================================
#  ______                           __     _____
# /_  __/___  ____ ___  _________ _/ /_   /__  /
#  / / / __ \/ __ `__ \/ ___/ __ `/ __/     / /
# / / / /_/ / / / / / / /__/ /_/ / /_      / /
#/_/  \____/_/ /_/ /_/\___/\__,_/\__/     /_/

# Multi-instance Apache Tomcat installation with a focus
# on best-practices as defined by Apache, SpringSource, and MuleSoft

retronym

object scala {
   val version = "SCALA_VERSION$"
}

val xml =         <dependencies>
            <dependency>                
                <groupId>org.scalanlp</groupId>
                <artifactId>scalala_${scala.version}</artifactId>
                <version>0.3.1</version>
            </dependency>