wido

#!/usr/bin/python

from flask import abort, Flask, request, Response
import json
import subprocess

listen_port = 6780
listen_addr = "0.0.0.0"

debug_mode  = True

wido

#include <stdio.h>
#include <string.h>
#include <rados/librados.h>

int set_rados_option(rados_t cluster, const char *option, const char *value) {
    printf("Set the %s option to: %s\n", option, value);
    return rados_conf_set(cluster, option, value);
}

int main(int argc, char *argv[]) {

wido

#!/usr/bin/env python
import time
import socket
import subprocess
import json

graphite_host = 'my.graphite.machine'
graphite_port = 2003

prefix = 'ceph'

wido

#!/usr/bin/env python

'''
Simple Python script which endlessly keeps writing 100MB to a temp file.

Used to demonstrate a Ceph cluster. This script runs inside a Virtual Machine (KVM)
running on a RBD image on a Ceph cluster.

The demo is to randomly pull out machines and show that the script can still write
and read data.

wido

#!/usr/bin/env python

from optparse import OptionParser

def get_object_name(prefix, sector, order):
    sector_size = 512
    return "%s.%012x" % (prefix, (sector * sector_size) / pow(2, order))

def main():
    parser = OptionParser()

wido

#!/usr/bin/env python

'''
This script writes X MegaByte random data to 10 RADOS objects and read the data again afterwards

It writes these statistics towards a Graphite server so you can see what the latency
inside your cluster is for both Read and Write

Author: Wido den Hollander <wido@widodh.nl>
'''

wido

'''
WSGI wrapper for the Ceph REST API to be run behind Apache with mod_wsgi.

Place this script in /var/www as ceph-rest-api.wsgi and use this VirtualHost:

<VirtualHost *:80>
    DocumentRoot /var/www
    ServerName ceph-rest-api

    ErrorLog /var/log/apache2/error.log

wido

#!/bin/bash

# Generates a CRUSH location based on the machine's hostname.
# This Gist was written for a customer who has mixed SSDs and HDDs in a a chassis.
# Hostname example in this case: dc2-rk01-ceph01 (Datacenter 2, rack 01, Ceph machine 01)
# It checks if the backing disk is a SSD or not and then comes up with the CRUSH location

while :; do
    case $1 in
        --cluster)

wido

#!/usr/bin/env python

'''
This script gathers pool statistics from RADOS and sends them to a Graphite server

It allows you to graph and see what each pool is doing.

Author: Wido den Hollander <wido@widodh.nl>
'''

wido

# udev rule to set disk schedulers for Ceph
# For spinning disks we want the CFQ scheduler so that we can set
# priorities on client and recovery I/O threads
#
# Author: Wido den Hollander <wido@42on.com>
# Date: July 2015

# Use deadline for SSDs
ACTION=="add|change", KERNEL=="sd[a-z]*", ATTR{queue/rotational}=="0", ATTR{queue/scheduler}="deadline"