Skip to content

Instantly share code, notes, and snippets.

View michelesr's full-sized avatar

Michele Sorcinelli michelesr

32 followers · 8 following
View GitHub Profile
@michelesr
michelesr / epoll_tcp_server.c
Last active August 8, 2024 20:19
Example epoll event loop based TCP server
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <sys/epoll.h>
#define BUFFER_SIZE 256
@michelesr
michelesr / nvidia_on.sh
Created March 19, 2022 21:11
Turn NVIDIA discrete card on
#!/bin/bash
set -ex
CONTROLLER_BUS_ID=0000:00:01.0
DEVICE_BUS_ID=0000:01:00.0
sudo tee /sys/bus/pci/devices/${CONTROLLER_BUS_ID}/power/control <<<on
sleep 1
sudo tee /sys/bus/pci/rescan <<<1
@michelesr
michelesr / nvidia_off.sh
Created March 19, 2022 21:10
Turn NVIDIA discrete card off on Linux
#!/bin/bash
set -ex
CONTROLLER_BUS_ID=0000:00:01.0
DEVICE_BUS_ID=0000:01:00.0
if sudo lsof /dev/nvidia0 ; then
echo 'Some processes are still using the card, aborting.'
exit 1
fi
@michelesr
michelesr / refresh-minikube-ecr-credentials.sh
Last active April 19, 2021 12:35
Update minikube registry-creds plugin to use latest temporary credentials from MFA profile
#!/bin/bash
# Use the temporary credentials from the MFA profile to update the
# registry-creds plugin credentials used to pull images from AWS Elastic
# Container Registry
#
# NOTE: the script won't request fresh credentials, make sure your credentials
# are not expired before running this script
# retrieve the profile from the credentials file
content=$(grep -F -A 5 '[mfa]' < ~/.aws/credentials)
@michelesr
michelesr / gist:8c5bae9d840b00a1bcf7a4fdef7f0632
Last active January 5, 2021 16:23
Update EKS managed nodegroups
#!/usr/bin/env bash
set -eux
# used to process output with awk
export AWS_DEFAULT_OUTPUT=text
disable_cluster_autoscaler() {
# delete the tag from the autoscaling group
aws autoscaling delete-tags \
--tags ResourceId=$1,ResourceType=auto-scaling-group,Key=k8s.io/cluster-autoscaler/enabled
@michelesr
michelesr / find-orphan-pods.rb
Last active March 6, 2020 11:29
Find pods which IP is not part of a ENI attached to the one of the cluster EC2 instances (for AWS CNI plugin)
#!/usr/bin/env ruby
require "json"
require "aws-sdk-ec2"
# Usage: bundle exec ruby find-orphan-pods.rb <cluster-name>
# NOTE: make user to point kubectl to the right context!
#
# Returns a list of pods which aren't using an attached ENI and so don't have
# network connectivity
@michelesr
michelesr / vlc-inhibit-screensaver.sh
Created March 24, 2019 20:42
Script to inhibit xscreensaver when VLC is playing
#!/bin/bash
SLEEP_TIME=${1:-4m}
while true; do
if [[ $(qdbus org.mpris.MediaPlayer2.vlc /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.PlaybackStatus) == 'Playing' ]]; then
# tell xscreensaver to pretend there has been user activity
xscreensaver-command -deactivate
fi
sleep ${SLEEP_TIME}
done
@michelesr
michelesr / oc.log
Created May 26, 2016 12:18
Attachment for https://github.com/openshift/origin/issues/9035
I0526 12:01:28.722410 270 loader.go:242] Config loaded from file /tmp/.kube/config
I0526 12:01:28.722930 270 round_trippers.go:264] GET https://192.168.7.60:8443/oapi
I0526 12:01:28.722944 270 round_trippers.go:271] Request Headers:
I0526 12:01:28.722951 270 round_trippers.go:274] Accept: application/json, */*
I0526 12:01:28.722957 270 round_trippers.go:274] User-Agent: oc/v1.1.4 (linux/amd64) openshift/3941102
I0526 12:01:28.722964 270 round_trippers.go:274] Authorization: Bearer jxtjZKCU-3BJG0OhhZvieFfKQw65j2ucisUNNHANGRc
I0526 12:01:28.990112 270 round_trippers.go:289] Response Status: 200 OK in 267 milliseconds
I0526 12:01:28.990134 270 round_trippers.go:292] Response Headers:
I0526 12:01:28.990140 270 round_trippers.go:295] Date: Thu, 26 May 2016 12:01:28 GMT
I0526 12:01:28.990146 270 round_trippers.go:295] Content-Length: 93