trendels

rsync daemon mode over ssh

There are several common ways to do rsync backups of hosts over ssh:

1. As a non-root user. Upsides: very secure. Downside: cannot back up sensitive files.
2. As root, with a public key. Downsides: Whoever has the private key has full root access to the host being backed up.
3. As root, with a public key and a "forced command". Upsides: Restricts access to the server. Downsides: Requires either careful matching of rsync options (which might change over time), or "validator" scripts. Neither idea sounds very appealing to me.
4. Running rsync in daemon mode on the host being backed up. Upsides: Lots of useful options, like read-only mode, running as a different user if required, server-side excludes/includes, etc. Downsides: Opens up a TCP port that has full filesystem read access and is hard to secure (Ideally you could make the rsync daemon use a unix socket instead, that could be secured by filesystem permissions, but I haven't found a way to do that).

Here is another option t

JonCole

ThreadPool Growth: Some Important Details

The CLR ThreadPool has two types of threads - "Worker" and "I/O Completion Port" (aka IOCP) threads.

• Worker threads are used when for things like processing Task.Run(…) or ThreadPool.QueueUserWorkItem(…) methods. These threads are also used by various components in the CLR when work needs to happen on a background thread.
• IOCP threads are used when asynchronous IO happens (e.g. reading from the network).

The thread pool provides new worker threads or I/O completion threads on demand (without any throttling) until it reaches the "Minimum" setting for each type of thread. By default, the minimum number of threads is set to the number of processors on a system.

Once the number of existing (busy) threads hits the "minimum" number of threads, the ThreadPool will throttle the rate at which is injects new threads to one thread per 500 milliseconds. This means that if your system gets a burst of work needing an IOCP thread, it will proces

artzub

#!/bin/bash

apt-get install mc htop git unzip wget curl -y

echo
echo "====================================================="
echo "                     WELCOME"
echo "====================================================="
echo
echo "Hub"

squarism

In the below keyboard shortcuts, I use the capital letters for reading clarity but this does not imply shift, if shift is needed, I will say shift. So ⌘ + D does not mean hold shift. ⌘ + Shift + D does of course.

Tabs and Windows

Function	Shortcut
New Tab	⌘ + T
Close Tab or Window	⌘ + W (same as many mac apps)
Go to Tab	⌘ + Number Key (ie: ⌘2 is 2nd tab)
Go to Split Pane by Direction	⌘ + Option + Arrow Key

jtbonhomme

# force HTTP to HTTPS - /etc/nginx/conf.d/nonssl.conf
server {
    listen       80;
    server_name  jira.example.com;
    access_log  off;
    return 301 https://$server_name$request_uri;
}

# /etc/nginx/conf.d/jira.conf
server {

croepha

// This will open up a prompt for text to send to a console session on digital ocean
//  Useful for long passwords
(function () {        
        var t = prompt("Enter text to be sent to console, (This wont send the enter keystroke)").split("");
        function f() {
                
                var character = t.shift();
                var i=[];
                var code = character.charCodeAt();
                var needs_shift = "!@#$%^&*()_+{}:\"<>?~|".indexOf(character) !== -1

nakedible-p

var AWS = require('aws-sdk');
var http = require('http');
var httpProxy = require('http-proxy');
var express = require('express');
var bodyParser = require('body-parser');
var stream = require('stream');

if (process.argv.length != 3) {
    console.error('usage: aws-es-proxy <my-cluster-endpoint>');
    process.exit(1);

JonCole

Diagnosing Redis errors on the client side

Content moved

The content from this GIST has been moved to official Azure Cache for Redis Documentation. The new location is https://docs.microsoft.com/azure/azure-cache-for-redis/cache-troubleshoot-client

Please update your bookmarks.

yorammi

#!/bin/bash

# REPO_NAME=<repo>.git
# ORIGIN_URL=git@<host>:<project>/$REPO_NAME
# REPO1_URL=git@<host>:<project>/$REPO_NAME

rm -rf $REPO_NAME
git clone --bare $ORIGIN_URL
if [ "$?" != "0" ]; then
  echo "ERROR: failed clone of $ORIGIN_URL"

rpherrera

#!/bin/bash

# stripping double quotes with sed
aws ecr describe-repositories | jq '.repositories[].repositoryName' | sed s/\"//g

# stripping double quotes with tr
aws ecr describe-repositories | jq '.repositories[].repositoryName' | tr -d '"'