rkoshy

Storing Google Cloud Platform (GCP) Credentials in AWS Secrets Manager for Apache Airflow to connect to BigQuery

This took me a while to figure out by looking at the code & docs. Most Google searches were directing me to useless articles (usually about storing the creds in GCP Secrets Manager)

1. Create a service account (or other account)
2. Create a new key and download the JSON file
3. Open the file & copy the entire JSON into the clipboard
4. Create an AWS Secret (name it appropriately, let's say airflow/connection/mydag/gcp
   • Set the key to extra
   • Set the value to the contents to:

rkoshy

I spent a lot of time trying to figure out how to setup Thorntail/Wildfly JAX-RS apps to allow async operations. Most configuration examples created one problem or another. I finally came across the idea that you could simply activate it by registering a ServletContextListener and changing the setting on the fly during startup.

package com.platform28.service.asyncmessaging.restapi;

import javax.servlet.FilterRegistration;
import javax.servlet.ServletContext;

rkoshy

Just copied and formatted an answer from Marek Gregor - SO link: https://stackoverflow.com/a/46580013

---

There are several possibilities/levels depending on what you want to do:

Implement Servlet API ServletContextListener interface in your application.

@WebListener

rkoshy

/*
NTP.js https://jehiah.cz/a/ntp-for-javascript
copyright Jehiah Czebotar jehiah@gmail.com
licensed under http://unlicense.org/ please modify as needed
to use configure serverUrl to an endpoint that when queried
(with X=timestamp_in_miliseconds)

GET serverUrl + '/' + X

returns a plain-text body:

rkoshy

From: http://zhentao-li.blogspot.com/2012/06/maven-shade-plugin-invalid-signature.html

<configuration>
          <filters>
            <filter>
              <artifact>*:*</artifact>
              <excludes>
 META-INF/*.SF

rkoshy

From SO link: https://stackoverflow.com/a/54111506 (Rostislav Matl)

#!/bin/bash
mvn_classpath=`mvn dependency:build-classpath -B | awk '/Dependencies classpath:/{getline; print}' | sed -e s/:/\\\\n/g`

for jar in $mvn_classpath; do 
        echo -n `jarsigner -verify $jar | grep verified | wc -l`; echo " $jar"; 
done

rkoshy

package org.ioe.tprsa.audio.preProcessings;
/**
 * @author Ganesh Tiwari
 * @reference 'A New Silence Removal and Endpoint Detection Algorithm
 * for Speech and Speaker Recognition Applications' by IIT, Khragpur
 */
public class EndPointDetection {
    private float[] originalSignal; //input
    private float[] silenceRemovedSignal;//output
    private int samplingRate;

rkoshy

**
SOURCE: https://www.tekovic.com/rebuilding-software-raid-without-mdadmconf
by Sasa Tekovic on 1. September 2015 - 19:55
**

Austing PowersRebuilding software RAID array is very easy when you have your mdadm.conf file at hand, but when you find yourself in a situation without backup of that little config file, e.g. after reinstalling the system or when your migrate disks to the new server, it can be a bit daunting.

Recently I had to reassemble two software RAID1 arrays one small Debian server after OS reinstall. So, there were four hard drives in total and to avoid mix-up and data loss, I had to find out which disk belonged which RAID array. Examining each drive with mdamd provided me with the necessary information.

root@localhost:~# mdadm --examine /dev/sdd1 

rkoshy

Install:
----------

* Activate Hetzner Rescue System (Debian)

* Connect to Hetzner Rescue System using SSH and live boot RancherOS 
   (thanks goes to William Fleurant for showing how this can be done: https://github.com/wfleurant/boot-rancheros-hetzner/)

    * apt-get update
    * apt-get install kexec-tools aria2

rkoshy

#!/bin/bash
RUN=/opt/vyatta/bin/vyatta-op-cmd-wrapper
DOWN=`$RUN sh interfaces |grep "A/D"|awk '{print $1}'`
echo Interfaces that need resetting: $DOWN
for TUN in $DOWN
do
PEER=`$RUN sh interfaces vti $TUN |grep peer|sed -e"s/.* peer \([0-9\.]*\)/\1/"`
logger -t "reset_vti.sh" "Resetting $TUN with peer IP $PEER"
$RUN reset vpn ipsec-peer $PEER
done