Puppet Class: profile::toolforge::checker
- Defined in:
- modules/profile/manifests/toolforge/checker.pp
Overview
Class: profile::toolforge::checker
Exposes a set of web endpoints that perform an explicit check for a particular set of internal services, and response OK (200) or not (anything else).
Used for external monitoring / collection of availability metrics
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# File 'modules/profile/manifests/toolforge/checker.pp', line 9
class profile::toolforge::checker {
include profile::toolforge::grid::base
include profile::toolforge::k8s::client
# Packages needed by the uwsgi services
ensure_packages([
'python3-flask',
'python3-ldap3',
'python3-redis',
'python3-requests',
'python3-yaml',
])
# For etcd checks, we need the puppet certs to act as client
$puppet_cert_pub = $facts['puppet_config']['hostcert']
$puppet_cert_priv = $facts['puppet_config']['hostprivkey']
$puppet_cert_ca = profile::base::certificates::get_trusted_ca_path()
$install_dir = '/var/lib/toolschecker'
$wsgi_file = "${install_dir}/toolschecker.py"
$etcd_cert_pub = "${install_dir}/etcd/${facts['networking']['fqdn']}.pem"
$etcd_cert_priv = "${install_dir}/etcd/${facts['networking']['fqdn']}.priv"
$etcd_cert_ca = "${install_dir}/etcd/ca.pem"
$checks = {
'cron' => absent,
'db_toolsdb' => absent,
'dns_private' => '/dns/private',
'etcd_kubernetes' => '/etcd/k8s',
'grid_continuous_buster' => absent,
'grid_start_buster' => absent,
'kubernetes_nodes_ready' => absent,
'ldap' => '/ldap',
'nfs_dumps' => '/nfs/dumps',
'nfs_home' => '/nfs/home',
'redis' => '/redis',
'self' => '/self',
'webservice_gridengine' => absent,
'webservice_kubernetes' => absent,
}
$checks.each |String $name, Variant[String, Wmflib::Ensure] $path| {
$ensure = $path ? {
Wmflib::Ensure => $path,
default => 'present',
}
# Provision a separate uwsgi service for each check endpoint.
# This is done so that we can use 'harakiri mode' which will terminate
# the entire uwsgi process if a request takes longer than the
# configured maximum response time.
uwsgi::app { "toolschecker_${name}":
ensure => $ensure,
settings => {
uwsgi => {
need-plugins => 'python3',
master => true,
chdir => $install_dir,
wsgi-file => $wsgi_file,
callable => 'app',
uwsgi-socket => "/tmp/uwsgi-${name}.sock",
chmod-socket => 664,
processes => 1,
harakiri => 300,
harakiri-verbose => true,
die-on-term => true,
env => [
'LANG=C.UTF-8',
'PYTHONENCODING=utf-8',
],
},
},
require => File[$wsgi_file],
}
}
$present_checks = $checks.filter |String $name, Variant[String, Wmflib::Ensure] $path| { !($path =~ Wmflib::Ensure) }
$check_names = keys($present_checks).map |$name| { "toolschecker_${name}" }
# Reverse proxy in front the collection of uwsgi containers
nginx::site { 'toolschecker-nginx':
content => template('profile/toolforge/checker/nginx.erb'),
require => Uwsgi::App[$check_names],
}
file { $install_dir:
ensure => directory,
owner => 'www-data',
group => 'www-data',
mode => '0755',
before => File[$wsgi_file],
}
file { "${install_dir}/etcd":
ensure => directory,
owner => 'www-data',
group => 'www-data',
mode => '0500',
}
file { $etcd_cert_pub:
ensure => present,
source => "file://${puppet_cert_pub}",
owner => 'www-data',
group => 'www-data',
}
file { $etcd_cert_priv:
ensure => present,
source => "file://${puppet_cert_priv}",
owner => 'www-data',
group => 'www-data',
mode => '0600',
show_diff => false,
}
file { $etcd_cert_ca:
ensure => present,
source => "file://${puppet_cert_ca}",
owner => 'www-data',
group => 'www-data',
}
file { $wsgi_file:
ensure => file,
owner => 'root',
group => 'root',
mode => '0444',
source => 'puppet:///modules/profile/toolforge/checker/toolschecker.py',
notify => Uwsgi::App[$check_names],
}
$config = {
'DEBUG' => true,
'DUMPS_PATH' => '/public/dumps/public/enwiki',
'ETCD_K8S' => wmflib::role::hosts('wmcs::toolforge::k8s::etcd'),
'ETCD_AUTH' => {
'KEY' => $etcd_cert_priv,
'CERT' => $etcd_cert_pub,
'CA' => $etcd_cert_ca,
},
'NFS_HOME_PATH' => '/data/project/toolschecker/nfs-test/',
}
file { "${install_dir}/config.yaml":
ensure => 'present',
owner => 'root',
group => 'www-data',
mode => '0440',
content => to_yaml($config),
notify => Uwsgi::App[$check_names],
}
file { "${install_dir}/replica.my.cnf":
ensure => present,
owner => 'www-data',
group => 'www-data',
mode => '0400',
source => '/data/project/toolschecker/replica.my.cnf',
before => File[$wsgi_file],
}
file { "${install_dir}/postgres.my.cnf":
ensure => absent,
}
file { [
"${install_dir}/kubernetes.json",
"${install_dir}/kube-config.yaml",
"${install_dir}/client.crt",
"${install_dir}/client.key",
]:
ensure => absent,
}
sudo::user { 'www-data':
ensure => absent,
}
# Configure the $HOME of the toolschecker tool. Assumes that the basic
# Toolforge tool user and its homedir has already been provisioned by
# other means.
# Directory to write NFS read/write check files to
file { '/data/project/toolschecker/nfs-test':
ensure => directory,
owner => 'www-data',
group => "${::wmcs_project}.toolschecker",
mode => '0755',
before => File[$wsgi_file],
}
# Configure the $HOME of the toolschecker-ge-ws tool. Assumes that the
# basic Toolforge tool user and its homedir has already been provisioned
# by other means.
file { '/usr/local/sbin/toolscheckerctl':
ensure => file,
owner => 'root',
group => 'root',
mode => '0655',
source => 'puppet:///modules/profile/toolforge/checker/toolscheckerctl.py',
}
}
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