jamesdube

Enable TCP port 2375 for external connection to Docker

See this issue.
Docker best practise to Control and configure Docker with systemd.

1. Create daemon.json file in /etc/docker:

    {"hosts": ["tcp://0.0.0.0:2375", "unix:///var/run/docker.sock"]}
   

jamesdube

How to disable systemd-resolved in Ubuntu

Stages

• Disable and stop the systemd-resolved service:

    sudo systemctl disable systemd-resolved.service
    sudo systemctl stop systemd-resolved
  

• Then put the following line in the [main] section of your /etc/NetworkManager/NetworkManager.conf:

jamesdube

import java.net.InetSocketAddress 
import scala.xml.{Elem, XML} 
import org.jboss.netty.buffer.ChannelBuffers 
import org.jboss.netty.util.CharsetUtil.UTF_8 
import com.twitter.finagle.Service; 
import com.twitter.finagle.builder.ClientBuilder; 
import com.twitter.finagle.http.{Http, RequestBuilder}; 
import org.jboss.netty.handler.codec.http._ 
import org.jboss.netty.buffer.ChannelBuffers.wrappedBuffer
import java.net.URL

jamesdube

Here are several different ways to test a TCP port without telnet.

BASH (man page)

$ cat < /dev/tcp/127.0.0.1/22
SSH-2.0-OpenSSH_5.3
^C

$ cat &lt; /dev/tcp/127.0.0.1/23

jamesdube

#!/bin/bash
# run this scripts with `bash emoji-info.sh` or `./emoji-info.sh`

usage() {
  cat << EOF
usage: $0 [options] <emoji>

Options:
  -h        Show this message
  -o        Octal Escape Sequence

jamesdube

package mycompany.myappp.config;

import org.apache.commons.io.IOUtils;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpInputMessage;
import org.springframework.http.HttpOutputMessage;
import org.springframework.http.MediaType;
import org.springframework.http.converter.AbstractHttpMessageConverter;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.HttpMessageNotReadableException;

jamesdube

Please make fork of this, as this can be removed by Github.com sooner or later.

CATF44LT7C-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

jamesdube

Serial Keys:

FU512-2DG1H-M85QZ-U7Z5T-PY8ZD
CU3MA-2LG1N-48EGQ-9GNGZ-QG0UD
GV7N2-DQZ00-4897Y-27ZNX-NV0TD
YZ718-4REEQ-08DHQ-JNYQC-ZQRD0
GZ3N0-6CX0L-H80UP-FPM59-NKAD4
YY31H-6EYEJ-480VZ-VXXZC-QF2E0
ZG51K-25FE1-H81ZP-95XGT-WV2C0
VG30H-2AX11-H88FQ-CQXGZ-M6AY4

jamesdube

kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: system:aggregated-metrics-reader
  labels:
    rbac.authorization.k8s.io/aggregate-to-view: "true"
    rbac.authorization.k8s.io/aggregate-to-edit: "true"
    rbac.authorization.k8s.io/aggregate-to-admin: "true"
rules:
- apiGroups: ["metrics.k8s.io"]

jamesdube

#!/bin/bash
## Generic installation on all nodes

sysctl -w net.ipv4.ip_forward=1
sed -i 's/#net.ipv4.ip_forward=1/net.ipv4.ip_forward=1/g' /etc/sysctl.conf 
sudo sysctl -p /etc/sysctl.conf

swapoff -a
sed -i '2s/^/#/' /etc/fstab