dalen

module Puppet::Parser::Functions
  newfunction(:gradual_deploy, :type => :rvalue, :arity => 4, :doc => "\
    Gradually deploy something
    Arguments are from, to, start and finish. Will gradually move from returning <from>
    to returning <to> over the duration between <start> and <finish>.
    start and finish are specified as ruby datetime strings, supports all formats that ruby
    can parse.
    ") do |args|
    from, to, start, finish = *args

dalen

Puppet::Parser::Functions.newfunction(:query_nodes, :type => :rvalue, :arity => -2, :doc => <<-EOT

  accepts two arguments, a query used to discover nodes, and a optional
  fact that should be returned.

  The query specified should conform to the following format:
    (Type[title] and fact_name<operator>fact_value) or ...
    Package["mysql-server"] and cluster_id=my_first_cluster

  The second argument should be single fact (this argument is optional)

dalen

# Determines which role a machine has.
# For example for lon2-pl4cassandra-a1 this will return 'pl4cassandra'
Facter.add('role') do
  setcode do
    if (Facter.fqdn =~ /[[:alpha:]]+\d*-([a-z0-9]+)-[[:alpha:]]+\d+/) == 0 then
      next $1
    end
    nil
  end
end

dalen

# rather this:

# Sets up NTP client
class ntp (
  $server # Server address
) {
  ...
}

dalen

puppetdb=# select * from pg_statio_all_tables where schemaname='public';
 relid | schemaname |         relname         | heap_blks_read | heap_blks_hit | idx_blks_read | idx_blks_hit | toast_blks_read | toast_blks_hit | tidx_blks_read | tidx_blks_hit
-------+------------+-------------------------+----------------+---------------+---------------+--------------+-----------------+----------------+----------------+---------------
 16455 | public     | catalog_resources       |     3342606866 |    9262119774 |     979685526 | 668733437342 |               0 |              0 |              0 |             0
 16489 | public     | schema_migrations       |              7 |            31 |            14 |           41 |                 |                |                |
 16552 | public     | resource_events         |       62059176 |     728183445 |     257889288 |   7405931285 |           47214 |          91996 |            983 |        215746
 16539 | public     | reports                 |        4749413 |    247689

dalen

puppetdb=# select * from pg_stat_all_tables where schemaname='public';

 relid | schemaname |         relname         | seq_scan | seq_tup_read |  idx_scan  | idx_tup_fetch | n_tup_ins  | n_tup_upd | n_tup_del  | n_tup_hot_upd | n_live_tup | n_dead_tup | last_vacuum |        last_autovacuum        | last_analyze |       last_autoanalyze        | vacuum_count | autovacuum_count | analyze_count | autoanalyze_count
-------+------------+-------------------------+----------+--------------+------------+---------------+------------+-----------+------------+---------------+------------+------------+-------------+-------------------------------+--------------+-------------------------------+--------------+------------------+---------------+-------------------
 16455 | public     | catalog_resources       |     9122 |  39959606875 |   35291772 |    7313691435 |  809557259 |         0 |  802674911 |             0 |    5781907 |    1013101 |             | 2013-07-08 22:33:51.260409+00 |              | 2013-07-09 10:17:11

dalen

puppetdb=# select * from pg_stat_database where datname='puppetdb';
 datid | datname  | numbackends | xact_commit | xact_rollback | blks_read  |   blks_hit   | tup_returned | tup_fetched | tup_inserted | tup_updated | tup_deleted | conflicts |          stats_reset
-------+----------+-------------+-------------+---------------+------------+--------------+--------------+-------------+--------------+-------------+-------------+-----------+-------------------------------
 16389 | puppetdb |          67 |    19350645 |          7158 | 5203673932 | 730840051209 | 296150976554 | 39856410308 |   3042400442 |    19151545 |  2915288790 |         0 | 2013-05-03 15:27:17.030942+00

dalen

$ curl -H "Accept: application/json" 'http://localhost:8080/v2/metrics/mbean/com.puppetlabs.puppetdb.http.server:type=v2,name=service-time'
{
  "75thPercentile" : 316.5253225,
  "OneMinuteRate" : 5.468794013251904,
  "Max" : 385878.543307,
  "StdDev" : 1153.933689578002,
  "FifteenMinuteRate" : 5.882720806763954,
  "Mean" : 454.27047779070443,
  "Min" : 0.204288,
  "MeanRate" : 5.717926515448163,

dalen

class postgresql (
  $version = '9.2',
  $datadir = "/var/lib/postgresql/${version}/main",
) {
  ...
}

dalen

class foo (
  $package_name = $osfamily ? {
    Debian => libfoo-ruby,
    Redhat => ruby-foo,
  },
  $param2,
  $param3,
) {
  ....
}