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bradley bcicen

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View gist:55bb5b6a4b7457bef38d
# this forces dpkg not to call sync() after package extraction and speeds up install
RUN echo "force-unsafe-io" > /etc/dpkg/dpkg.cfg.d/02apt-speedup
# we don't need and apt cache in a container
RUN echo "Acquire::http {No-Cache=True;};" > /etc/apt/apt.conf.d/no-cache
View cargo_how_to.md

#cargo, docker hub without docker, how to

18 Jan 2015

###Background

I have been using linux containers for almost 2 years now. It started during an internship at Applidget, a startup in Paris. My job was to integrate linux containers technology in their private PaaS. At this time, there where no doubt, the technology to use was LXC. One week or so after I started digging into LXC, one of my co-worker talked to me about this new thing called docker. He told me "isn't it what you are supposed to do during your internship ?". And it was kind of it.

At this time I already highlighted a big challenge of containers in PaaS: creation time. Waiting for bundle install to complete is already long enough to have to wait for another 40 secondes to create a container :). Docker landed just in time !

@mbijon
mbijon / syslog-ng.conf
Created Nov 26, 2013 — forked from caquino/syslog-ng.conf
Syslog nginx without $ or patching, http://syshero.org/post/68174083489/nginx-syslog-ing-without-breaking-the-bank-or-patching (1) directory/fifo structure: mkdir -p /srv/logs/ mkfifo /srv/logs/access.log mkfifo /srv/logs/error.log (2) nginx conf: error_log /srv/logs/error.log; access_log /srv/logs/access.log; (3) remember to start syslog-ng bef…
View syslog-ng.conf
source s_nginx_20 { pipe("/srv/logs/access.log" program_override("nginx-access-log")); };
source s_nginx_21 { pipe("/srv/logs/error.log" program_override("nginx-error-log")); };
filter f_nginx_20 { match("nginx-access-log" value("PROGRAM")); };
filter f_nginx_21 { match("nginx-error-log" value("PROGRAM")); };
destination d_remote { tcp("central.syslog", port(514)); };
log { source(s_nginx_20); filter(f_nginx_20); destination(d_messages); };
log { source(s_nginx_21); filter(f_nginx_21); destination(d_messages); };
@jdoconnor
jdoconnor / gist:32ef0314cecb80157c4e
Created Sep 26, 2014
Update mtimes based off commit time
View gist:32ef0314cecb80157c4e
#!/bin/bash -e
####
# based on https://gist.github.com/jeffery/1115504
# Helper script to update the Last modified timestamp of files in a Git SCM
# Projects working Copy
#
# When you clone a Git repository, it sets the timestamp of all the files to the
# time when you cloned the repository.
#
# This becomes a problem when you want the cloned repository, which is part of a
@lost-theory
lost-theory / netstat-2015.md
Last active Sep 10, 2018
netstat on all machines -> python -> graphviz -> png
View netstat-2015.md
$ knife ssh -m "...every host in the network..." "sudo netstat -nutap" -a hostname > meganetstat.txt
$ python
>>> from collections import Counter as C
>>> HS = "...every host in the network...".split()
>>> ip = lambda s: s.split(":")[0]
>>> xs = [map(ip, [x[0], x[4], x[5]]) for x in [x.strip().split() for x in open("meganetstat.txt").readlines() if "tcp" in x] if len(x)>=6]
>>> ipmap = [(h, C([x[1] for x in xs if x[0] == h])) for h in HS]
>>> ipmapx = dict([(sorted([(x,y) for (x,y) in ip[1].items() if x.startswith("10.")], key=lambda t: -t[1])[0][0], ip[0]) for ip in ipmap])
>>> sorted(C(map(ipmapx.get, [x[2] for x in xs if x[2].startswith("10.")])).items(), key=lambda t: t[1])
@mloberg
mloberg / gist:3750653
Created Sep 19, 2012
Find file in git based on md5 checksum.
View gist:3750653
#!/bin/sh
CHECKSUM=$1
FILE=$2
if [[ -z "$CHECKSUM" ]]; then
echo "Usage: $0 md5 file"
exit 1
elif [[ -z "$FILE" ]]; then
echo "Usage: $0 md5 file"
View console_colors.md

Displaying images in the terminal with tput and echo

output

Requires ImageMagick, easily available from your favorite package manager. Tested on Linux and OSX
convert image.png -resize 40 txt:-|sed -E 's/://;s/\( ? ?//;s/, ? ?/,/g;s/\)//;s/([0-9]+,[0-9]+,[0-9]+),[0-9]+/\1/g;s/255/254/g;/mage/d'|awk '{print $1,$2}'|sed -E 's/^0,[0-9]+ /print "echo;tput setaf "\;/;s/^[0-9]+,[0-9]+ /print "tput setaf ";/;s/(.+),(.+),(.+)/\1\/42.5*36+\2\/42.5*6+\3\/42.5+16/'|bc|sed 's/$/;echo -n "  ";/'|tr '\n' ' '|sed 's/^/tput rev;/;s/; /;/g;s/$/tput sgr0;echo/'|bash
@sivel
sivel / wp-mysql-test.php
Created Aug 5, 2009
Database connection test script for WordPress
View wp-mysql-test.php
<?php
/**
* Database connection test script for WordPress
*
* Parses the wp-config.php file for DB connection information and tests
* a mysql connection to the DB server and selection of the database.
* Errors will be reported. Attempts will be made to repair table errors.
*
* Place this file in the same directory as wp-config.php
*
@jordansissel
jordansissel / foo.md
Last active Feb 6, 2021
logstash message format
View foo.md

logstash json format

{
  "message"    => "hello world",
  "@version"   => "1",
  "@timestamp" => "2014-04-22T23:03:14.111Z",
  "type"       => "stdin",
  "host"       => "hello.local"
}
@drsnyder
drsnyder / urandom-reads.py
Last active Aug 11, 2021
Demonstrate the contention on /dev/urandom with N threads.
View urandom-reads.py
# Create a user land file for testing.
# dd if=/dev/urandom of=/tmp/urandom bs=1M count=10
#
# urandom-reads.py infile threads
# Examples:
# time python2.6 urandom-reads.py /tmp/urandom
# time python2.6 urandom-reads.py /dev/urandom
#
# R to generate a plot of the read time distribution at each level of concurrency
# rdt = read.csv("output.csv", header=F)