d4kine

Summary issue #4250 Kuma

• Issue: 5 seconds startup timeout at kuma-sidecar while DNS resolving
• Setup:
  • OpenShift 4.10 with Multus-CNI
  • Offline / air-gapped environment
  • IPv6 disabled
  • Kuma 1.7.0-amd64

d4kine

# Copyright 2017 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,

d4kine

apiVersion: v1
kind: Namespace
metadata:
  name: echoserver
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: echoserver
  namespace: echoserver

d4kine

#
# Docker cant fetch host IP-Address, replace [SERVER] in line 30 with your local hostname or IP directly.
# Note: external port is set to 9093
#

version: '3.1'

services:
  zoo1:
    image: zookeeper:3.4.9

d4kine

#!/bin/bash
HOSTNAME=__INSERT__DNS__HERE
LOGFILE=./current_ip.log
RESOLVED_IP=$(host $HOSTNAME | cut -f4 -d' ')
PORTS=(80)

if [ ! -f $LOGFILE ]; then
    for PORT in "${PORTS[@]}"; do
        /usr/sbin/ufw allow from $RESOLVED_IP to any port $PORT
    done

d4kine

from .logger import log

d4kine

a01.cdn.update.playstation.org.edgesuite.net
a192.d.akamai.net
al02.cdn.update.playstation.net
api-p014.ribob01.net
apicdn-p014.ribob01.net
artcdnsecure.ribob01.net
asm.np.community.playstation.net
dau01.ps4.update.playstation.net
dbr01.ps4.update.playstation.net
dcn01.ps4.update.playstation.net

d4kine

public <T> T ifNull(T... args) {
  for (T arg : args) {
    if (arg != null)
      return arg;
  }
}