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-- Calculate From : http://munin-monitoring.org/browser/munin/plugins/node.d/postgres_streaming_.in
-- with help : http://www.postgresql.org/docs/9.3/static/monitoring-stats.html#PG-STAT-REPLICATION-VIEW
-- http://eulerto.blogspot.fr/2011/11/understanding-wal-nomenclature.html

create or replace function CalculateNumericalOffset(text)
returns bigint
language sql 
as $$
select ('x'||lpad( 'ff000000', 16, '0'))::bit(64)::bigint 
     * ('x'||lpad( split_part( $1 ,'/',1), 16, '0'))::bit(64)::bigint

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-- Calculate From : http://munin-monitoring.org/browser/munin/plugins/node.d/postgres_streaming_.in
-- with help : http://www.postgresql.org/docs/9.3/static/monitoring-stats.html#PG-STAT-REPLICATION-VIEW
-- http://eulerto.blogspot.fr/2011/11/understanding-wal-nomenclature.html

create or replace function CalculateNumericalOffset(text)
returns bigint
language sql 
as $$
select ('x'||lpad( 'ff000000', 16, '0'))::bit(64)::bigint 
     * ('x'||lpad( split_part( $1 ,'/',1), 16, '0'))::bit(64)::bigint

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curl -s "a.b.c.d:9200/logstash-2013.11.12/_search?pretty" -d '{
      "query": {
          "match_all": {}
      },
      "from": 0,
      "size": 1,
      "fields": [ ],
      "sort": {
          "@timestamp" : "desc"
      }

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┌────────┬──┬──┬──┬───┬─────┬──────┬────┬─────┬─────┬─────┬──────┬─────┬─────┬─────┐
     time us sy cl bcl   mem    rss keys cmd/s exp/s evt/s hit%/s hit/s mis/s aofcs 
├────────┼──┼──┼──┼───┼─────┼──────┼────┼─────┼─────┼─────┼──────┼─────┼─────┼─────┤
 16:49:01  -  -  4   2 502kB 1.90MB    0     -     -     -      -     -     -    0B 
 16:49:03  2  3  4   2 502kB 1.89MB    0   643     0     0      -     0     0    0B 
└────────┴──┴──┴──┴───┴─────┴──────┴────┴─────┴─────┴─────┴──────┴─────┴─────┴─────┘
 16:49:05  1  3  4   2 502kB 1.88MB    0   618     0     0      -     0     0    0B 
 16:49:07  2  3  4   2 430kB 1.89MB    0   656     0     0      -     0     0    0B 
 16:49:10  1  4  4   2 502kB 1.89MB    0   631     0     0      -     0     0    0B 
 16:49:12  2  2  4   1 502kB 1.89MB    0   653     0     0      -     0     0    0B 

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why

If you have some memcached servers and want to transition to couchbase, you'll get into trouble because moxi, the couchbase memcached proxy will try to bind port 11211. I didn't find any way to change this port in the official documentation.

How

Finding out how moxi comes to life

ps tells us moxi is spawned by an erlang process, the main couchbase one, ns_server.

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set nocompatible
filetype off

set rtp+=~/.vim/bundle/vundle/
call vundle#rc()

Bundle 'tpope/vim-fugitive'
Bundle 'altercation/vim-colors-solarized'
Bundle 'scrooloose/syntastic'
Bundle 'spectator/openssl.vim'

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require "rubygems"
require "couchbase"
require "net/http"
require "json"

def random_string(size=30)
  #o =  [('a'..'z'),('A'..'Z'),(1..9)].map{|i| i.to_a}.flatten
  o = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", 1, 2, 3, 4, 5, 6, 7, 8, 9]
  string = (0..size).map{ o[rand(o.length)] }.join
end

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            action "handle" do
                validate :resourcetype, String
                validate :resourcename, String

                require 'chef'
                require 'chef/client'
                require 'chef/run_context'

                begin
                    Chef::Config[:solo] = true

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Logstash + ES + Java 6 & 7

ES VMs : 1 CPU, 2G of RAM, dedicated to ES. ES process got 1G of RAM. Running version 0.20.5 Logstash machine : 1 collector process, input TCP, output to redis and 1 indexer process input redis and output in Y to both ES servers

pre flight test at 10h27, cleaned indices and then started indexing at 10h37. This test is not about performance in itself, but more about ES behaviour when changing the JVM. Ended around 11h15

first is the VM running under java 6, then java 7

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PreCacheChain "PreCache"

LoadPlugin "match_regex"
LoadPlugin "target_notification"
LoadPlugin "target_set"

<Chain "PreCache">
  # sanitize plugin names, to get a better naming
  <Rule "tail_to_postfix">
    <Match "regex">