manics

#!/usr/bin/env python
# Check whether a file contains valid UTF-8
# From http://stackoverflow.com/a/3269323

import codecs
import sys
import os

def checkFile(filename):
    try:

manics

# Create a simple HTML visualisation of similarity scores between last.fm users.
# Replace API_KEY with your Last.fm api key, and USERS_* with a list of usernames.

import sys
import time
import urllib2
import xml.dom.minidom

api_key = API_KEY

manics

#!/usr/bin/env python

# Prints out a tree of processes with cpu and memory use
# Usage: process-tree-monitor pid [-v]

import psutil
from datetime import datetime
import sys
import time

manics

#!/usr/bin/env python
import math
import os
import psutil
import sys
import time

try:
    import termcolor
    TERMCOLORS = termcolor.COLORS.keys()

manics

DROP TABLE IF EXISTS test_edges;
DROP TABLE IF EXISTS test_nodes;
CREATE TABLE test_nodes(id SERIAL PRIMARY KEY);
CREATE TABLE test_edges(
    a INTEGER REFERENCES test_nodes(id), b INTEGER REFERENCES test_nodes(id));

INSERT INTO test_nodes(id) VALUES (0);


-- Create a graph with 100,000 nodes

manics

Script for generating self-signed etcd client certificates

There is a surprising lack of documentation on how to do this. See:

• http://dst.lbl.gov/~boverhof/openssl_certs.html
• etcd-io/etcd#209
• https://www.prshanmu.com/2009/03/generating-ssl-certificates-with-x509v3-extensions.html

Run:

manics

Openstack Etcd SkyDNS

A very simple polling agent that updates an Etcd database with SkyDNS entries for all OpenStack instances in a tenancy.

Example

docker run -d --name etcd quay.io/coreos/etcd \
    --listen-client-urls http://0.0.0.0:2379 \

--advertise-client-urls http://0.0.0.0:2379 --debug

manics

#!/bin/bash
# Requires pg_stat_statements extension on the server
# https://www.postgresql.org/docs/9.6/static/pgstatstatements.html

if [ $# -ne 1 ]; then
  echo Usage: $(basename "$0") dbname
  exit 1
fi

sudo -u postgres psql "$1" -c '

manics

kubeadm cloudinit

Setup a single node Kubernetes cluster for development using kubeadm: https://kubernetes.io/docs/setup/independent/install-kubeadm/

Create a CentOS 7 or Ubuntu Xenial (16.04) machine, and run kubeadm.sh as root.

You can pass this script as user-data to cloud-init so that it will be automatically run. For example, on openstack:

openstack server create NAME --flavor FLAVOR --key-name KEY --image 'Ubuntu Xenial' --network NET --security-group SECGROUP --user-data kubeadm.sh

manics

#!/usr/bin/env python
# Convert the output of `lsof -F` into PID USER CMD OBJ
import sys


rs = []
pid = -1
cmd = ''
user = ''
for line in sys.stdin: