zulip/puppet/zulip_ops/manifests/postgres_common.pp

class zulip_ops::postgres_common {
  include zulip::postgres_common

  $internal_postgres_packages = [# dependencies for our wal-e backup system
                                 "lzop",
                                 "pv",
                                 "python3-pip",
                                 "python-pip",
                                 # "python3-gevent", # missing on trusty
                                 "python-gevent",
                                 # Postgres Nagios check plugin
                                 "check-postgres",
                                 ]
  package { $internal_postgres_packages: ensure => "installed" }

  exec {"pip_wal-e":
    # On trusty, there is no python3-boto or python3-gevent package,
    # so we keep our `wal-e` explicitly on Python 2 for now.
    command  => "/usr/bin/pip2 install git+git://github.com/zbenjamin/wal-e.git#egg=wal-e",
    creates  => "/usr/local/bin/wal-e",
    require  => Package['python-pip', 'python-boto', 'python-gevent',
                        'lzop', 'pv'],
  }

  cron { "pg_backup_and_purge":
    command => "/usr/local/bin/pg_backup_and_purge",
    ensure => present,
    environment => "PATH=/bin:/usr/bin:/usr/local/bin",
    hour => 5,
    minute => 0,
    target => "postgres",
    user => "postgres",
    require => [ File["/usr/local/bin/pg_backup_and_purge"],
                 Package["postgresql-${zulip::base::postgres_version}",
                         "python3-dateutil",
                         "python-dateutil"
                 ] ]
  }

  exec { "sysctl_p":
    command   => "/sbin/sysctl -p /etc/sysctl.d/40-postgresql.conf",
    subscribe => File['/etc/sysctl.d/40-postgresql.conf'],
    refreshonly => true,
  }


}