ayubmalik

package main

/**
  Example hack to encrypt a file using a GPG encryption key. Works with GPG v2.x.
  The encrypted file e.g. /tmp/data.txt.gpg can then be decrypted using the standard command
  gpg /tmp/data.txt.gpg

  Assumes you have **created** an encryption key and exported armored version. 
  You have to read the armored key directly as Go cannot read pubring.kbx (yet).

kyrsideris

Experimentation on Spark's SaveMode

Experiment on the effect of different SaveMode and Cassandra starting from a populated table

Summary

If the cassandra table that spark targets exists then

• SaveMode.Append will update it
• SaveMode.Overwrite will truncate and insert (but it requires option "confirm.truncate" -> "true")
• SaveMode.Ignore will not perform any action on existing table
• SaveMode.ErrorIfExists (default) will throw the following exception: https://github.com/datastax/spark-cassandra-connector/blob/v2.0.6/spark-cassandra-connector/src/main/scala/org/apache/spark/sql/cassandra/DefaultSource.scala#L93-L96

marwei

Kafka 0.11.0.0 (Confluent 3.3.0) added support to manipulate offsets for a consumer group via cli kafka-consumer-groups command.

1. List the topics to which the group is subscribed

kafka-consumer-groups --bootstrap-server <kafkahost:port> --group <group_id> --describe

Note the values under "CURRENT-OFFSET" and "LOG-END-OFFSET". "CURRENT-OFFSET" is the offset where this consumer group is currently at in each of the partitions.

2. Reset the consumer offset for a topic (preview)

rmoff

I’ve since written a full blog on this particular Single Message Transform. It can be found at See also https://rmoff.net/2020/12/17/twelve-days-of-smt-day-8-timestampconverter/

alexellis

This guide has moved to a GitHub repository to enable collaboration and community input via pull-requests.

https://github.com/alexellis/k8s-on-raspbian

Alex

ajeetraina

version: "3.1"
services:
  db:
    image: "mysql:latest"
    networks:
      collabnet:
        aliases: ["db"]
    volumes:
      - "db_data:/var/lib/mysql"
    secrets:

jdeathe

How to generate a self-signed SAN SSL/TLS certificate using openssl

Generating a self-signed certificate is a common task and the command to generate one with openssl is well known and well documented. Generating a certificate that includes subjectAltName is not so straght forward however. The following example demonstrates how to generate a SAN certificate without making a permanent change to the openssl configuration.

Generate a list of all required DNS names, (Note: CN will be discarded).

$ export SAN="DNS:www.domain.localdomain,DNS:domain.localdomain"

thomasdarimont

package de.tdlabs.examples;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;

@SpringBootApplication
public class App  extends SpringBootServletInitializer {

mbunyard

package com.rogerthat.network.util;

import android.content.Context;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URLConnection;

import okhttp3.Interceptor;

albfan

import java.beans.PropertyDescriptor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.LinkedList;
import java.util.List;
import org.springframework.beans.BeanUtils;