jlebon

This gist is mostly based on the dnsmasq appendix from the openshift-training repo. However, I updated it and included fixes for the many gotchas I found along the way.

This is useful for folks who want to set up a DNS service as part of the cluster itself, either because they cannot easily change their DNS setup outside of the cluster, or just because they want to keep the cluster setup self-contained.

bastman

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

mgoodness

AWS Service annotations

• service.beta.kubernetes.io/aws-load-balancer-access-log-emit-interval (in minutes)
• service.beta.kubernetes.io/aws-load-balancer-access-log-enabled (true|false)
• service.beta.kubernetes.io/aws-load-balancer-access-log-s3-bucket-name
• service.beta.kubernetes.io/aws-load-balancer-access-log-s3-bucket-prefix
• service.beta.kubernetes.io/aws-load-balancer-additional-resource-tags (comma-separated list of key=value)
• service.beta.kubernetes.io/aws-load-balancer-backend-protocol (http|https|ssl|tcp)
• service.beta.kubernetes.io/aws-load-balancer-connection-draining-enabled (true|false)

so0k

Kubectl output options

Let's look at some basic kubectl output options.

Our intention is to list nodes (with their AWS InstanceId) and Pods (sorted by node).

We can start with:

kubectl get no

helinwang

Here is the gist for showing how to send string from c to go without a copy, for sending an float32 array from c to go without copy, please see here

Below is the documentation for converting between a c string and a go string:

// From https://golang.org/cmd/cgo/
// A few special functions convert between Go and C types by making copies of the data. 
// Go string to C string
// The C string is allocated in the C heap using malloc.
// It is the caller's responsibility to arrange for it to be
// freed, such as by calling C.free (be sure to include stdlib.h

PaulSec

import subprocess
import argparse
import re
import sys
import requests

def do_dig(domain):
    command = "dig {} | grep IN".format(domain)
    try:
        output = subprocess.check_output(command, shell=True, stdin=subprocess.PIPE, stderr=subprocess.STDOUT)

nblair

import org.sonatype.nexus.common.entity.*
import org.sonatype.nexus.security.*
import org.sonatype.nexus.security.authz.*
import org.sonatype.nexus.selector.*

import com.google.common.collect.ImmutableMap

// use container.lookup to fetch internal APIs we need to use
def selectorManager = container.lookup(SelectorManager.class.name)
def securitySystem = container.lookup(SecuritySystem.class.name)

khardix

#!/usr/bin/env python3.6

import asyncio
from contextlib import closing

import aiohttp
import tqdm


async def download(session, url, progress_queue):

hallazzang

Example of how to implement throttling in Asyncio/Aiohttp

This gist consists of 4 files:

throttler.py - Throttler class implementation
asyncio_throttling_example.py - Throttling general coroutines
aiohttp_throttling_example_client.py - Throttling aiohttp requests
aiohttp_throttling_example_server.py - Web server for testing aiohttp_throttling_example_client.py

outofcoffee

#!/usr/bin/env bash
# Example:
#    ./find-ecr-image.sh foo/bar mytag

if [[ $# -lt 2 ]]; then
    echo "Usage: $( basename $0 ) <repository-name> <image-tag>"
    exit 1
fi

IMAGE_META="$( aws ecr describe-images --repository-name=$1 --image-ids=imageTag=$2 2> /dev/null )"