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config.pp
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config.pp
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# Class prometheus::config
# Configuration class for prometheus monitoring system
class prometheus::config (
$global_config,
$rule_files,
$scrape_configs,
$remote_read_configs,
$config_template = $::prometheus::params::config_template,
$storage_retention = $::prometheus::params::storage_retention,
) {
if $prometheus::init_style {
if( versioncmp($::prometheus::version, '2.0.0') < 0 ){
# helper variable indicating prometheus version, so we can use on this information in the template
$prometheus_v2 = false
if $remote_read_configs != [] {
fail('remote_read_configs requires prometheus 2.X')
}
$daemon_flags = [
"-config.file=${::prometheus::config_dir}/prometheus.yaml",
"-storage.local.path=${::prometheus::localstorage}",
"-storage.local.retention=${storage_retention}",
"-web.console.templates=${::prometheus::shared_dir}/consoles",
"-web.console.libraries=${::prometheus::shared_dir}/console_libraries",
]
} else {
# helper variable indicating prometheus version, so we can use on this information in the template
$prometheus_v2 = true
$daemon_flags = [
"--config.file=${::prometheus::config_dir}/prometheus.yaml",
"--storage.tsdb.path=${::prometheus::localstorage}",
"--storage.tsdb.retention=${storage_retention}",
"--web.console.templates=${::prometheus::shared_dir}/consoles",
"--web.console.libraries=${::prometheus::shared_dir}/console_libraries",
]
}
# the vast majority of files here are init-files
# so any change there should trigger a full service restart
if $::prometheus::restart_on_change {
File {
notify => [Class['::prometheus::run_service']],
}
$systemd_notify = [Exec['prometheus-systemd-reload'], Class['::prometheus::run_service']]
} else {
$systemd_notify = Exec['prometheus-systemd-reload']
}
case $prometheus::init_style {
'upstart' : {
file { '/etc/init/prometheus.conf':
mode => '0444',
owner => 'root',
group => 'root',
content => template('prometheus/prometheus.upstart.erb'),
}
file { '/etc/init.d/prometheus':
ensure => link,
target => '/lib/init/upstart-job',
owner => 'root',
group => 'root',
mode => '0755',
}
}
'systemd' : {
include 'systemd'
::systemd::unit_file {'prometheus.service':
content => template('prometheus/prometheus.systemd.erb'),
}
}
'sysv' : {
file { '/etc/init.d/prometheus':
mode => '0555',
owner => 'root',
group => 'root',
content => template('prometheus/prometheus.sysv.erb'),
}
}
'debian' : {
file { '/etc/init.d/prometheus':
mode => '0555',
owner => 'root',
group => 'root',
content => template('prometheus/prometheus.debian.erb'),
}
}
'sles' : {
file { '/etc/init.d/prometheus':
mode => '0555',
owner => 'root',
group => 'root',
content => template('prometheus/prometheus.sles.erb'),
}
}
'launchd' : {
file { '/Library/LaunchDaemons/io.prometheus.daemon.plist':
mode => '0644',
owner => 'root',
group => 'wheel',
content => template('prometheus/prometheus.launchd.erb'),
}
}
default : {
fail("I don't know how to create an init script for style ${prometheus::init_style}")
}
}
}
if versioncmp($prometheus::version, '2.0.0') >= 0 {
$cfg_verify_cmd = 'check config'
} else {
$cfg_verify_cmd = 'check-config'
}
file { 'prometheus.yaml':
ensure => present,
path => "${prometheus::config_dir}/prometheus.yaml",
owner => $prometheus::user,
group => $prometheus::group,
mode => $prometheus::config_mode,
notify => Class['::prometheus::service_reload'],
require => File["${prometheus::config_dir}/${prometheus::alertfile_name}"],
content => template($config_template),
validate_cmd => "${prometheus::bin_dir}/promtool ${cfg_verify_cmd} %",
}
}

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