mbulman

import urllib, json, time

def getUrl(path):
    """ Makes an OpsCenter API call to the given path """

    url = 'http://localhost:8888/%s' % path
    contents = urllib.urlopen(url).read()
    return json.loads(contents)

def pollCluster(cluster_id):

surjikal

Follow these steps to install Graphite on a fresh Ubuntu 12.04 instance. Make sure you read and understand the commands because by the time you read this, things could be outdated.

Graphite

Installing dependencies

# apt-get install libpq-dev
# apt-get install python-dev python-pip python-cairo python-psycopg2
# apt-get install python-django python-django-tagging

rbranson

The point of this is to use cheap machines with small/slow storage to coordinate client requests while dedicating the machines with the big and fast storage to doing what they do best. I found that request coordination was contributing to about half the CPU usage on our Cassandra nodes, on average. Solid state storage is quite expensive, nearly doubling the cost of typical hardware. It also means that if people have control over hardware placement within the network, they can place proxy nodes closer to the client without impacting their storage footprint or fault tolerance characteristics.

This is accomplished in Cassandra by passing the -Dcassandra.join_ring=false option when the process is started. These nodes will connect to the seeds, cache the gossip data, load the schema, and begin listening for client requests. Messages like "/x.x.x.x is now UP!" will appear on the other nodes.

There are also some more practical benefits to this. Handling client requests caused us to push the NewSize of the heap up

mikeyk

#! /usr/bin/env python
from boto.ses.connection import SESConnection
import os
import sys
import subprocess
import socket

TMPFILE = '/var/run/postgresql/last-wal-archive-error-file.tmp'

if __name__ == '__main__':

mikeyk

def run_pg_fouine():
    info = host_info[env.host_string]
    db_name = info.tags.get('Name')
    sudo('perl -pi -e "s/log_min_duration_statement = .*/log_min_duration_statement = 0/" /etc/postgresql/9.*/main/postgresql.conf')
    sudo('/etc/init.d/postgresql reload')
    time.sleep(30)
    sudo('perl -pi -e "s/log_min_duration_statement = .*/log_min_duration_statement = 500/" /etc/postgresql/9.*/main/postgresql.conf')
    sudo('/etc/init.d/postgresql reload')
    run('tail -n 100000 /var/log/postgresql/postgresql-9.*-main.log > /tmp/pgfouine.txt')
    run('gzip -f /tmp/pgfouine.txt')

mikeyk

from django.contrib.sessions.backends.base import SessionBase, CreateError
from django.conf import settings
from django.utils.encoding import force_unicode
import redis

class SessionStore(SessionBase):
    """ Redis store for sessions"""

    def __init__(self, session_key=None):
        self.redis = redis.Redis(

krikulis

#include <evhttp.h>

void process_request(struct evhttp_request *req, void *arg){ 
    struct evbuffer *buf = evbuffer_new();
    if (buf == NULL) return;
    evbuffer_add_printf(buf, "Requested: %s\n", evhttp_request_uri(req));
    evhttp_send_reply(req, HTTP_OK, "OK", buf);
}

int main () {

katallaxie

package server

import (
	"context"
	"os"
	"os/signal"
	"syscall"
	"time"

	"golang.org/x/sync/errgroup"

impressiver

<!-- Raven.js Config -->
<script src="{{ JS_PATH }}/lib/raven.js" type="text/javascript"></script>
<script type="text/javascript">
// Ignore list based off: https://gist.github.com/1878283
var ravenOptions = {
  // Will cause a deprecation warning, but the demise of `ignoreErrors` is still under discussion.
  // See: https://github.com/getsentry/raven-js/issues/73
  ignoreErrors: [
    // Random plugins/extensions
    'top.GLOBALS',