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# File 'modules/profile/manifests/ganeti.pp', line 53
class profile::ganeti (
Array[Stdlib::Fqdn] $nodes = lookup('profile::ganeti::nodes'),
Array[Stdlib::Fqdn] $rapi_nodes = lookup('profile::ganeti::rapi_nodes'),
String $rapi_certificate = lookup('profile::ganeti::rapi::certificate'),
Optional[String] $rapi_ro_user = lookup('profile::ganeti::rapi::ro_user',
{ default_value => undef }),
Optional[String] $rapi_ro_password = lookup('profile::ganeti::rapi::ro_password',
{ default_value => undef }),
Integer[0, 100] $critical_memory = lookup('profile::ganeti::critical_memory'),
Integer[0, 100] $warning_memory = lookup('profile::ganeti::warning_memory'),
Boolean $routed = lookup('profile::ganeti::routed'),
Optional[Stdlib::IP::Address] $tap_ip4 = lookup('profile::ganeti::tap_ip4',
{ default_value => undef }),
Hash[Wmflib::Sites, Stdlib::IP::Address] $tftp_servers = lookup('profile::installserver::dhcp::tftp_servers'),
) {
class { 'ganeti':
certname => $rapi_certificate,
}
class { 'ganeti::prometheus':
rapi_endpoint => $rapi_certificate,
rapi_ro_user => $rapi_ro_user,
rapi_ro_password => $rapi_ro_password,
}
# Ganeti needs intracluster SSH root access
# DSS+RSA keys in here, but note that DSS is deprecated
ssh::userkey { 'root-ganeti':
ensure => present,
user => 'root',
skey => 'ganeti',
source => 'puppet:///modules/profile/ganeti/ganeti.pub',
}
# The RSA private key
file { '/root/.ssh/id_rsa':
ensure => present,
owner => 'root',
group => 'root',
mode => '0400',
content => secret('ganeti/id_rsa'),
show_diff => false,
}
# This is here for completeness
file { '/root/.ssh/id_rsa.pub':
ensure => present,
owner => 'root',
group => 'root',
mode => '0400',
source => 'puppet:///modules/profile/ganeti/id_rsa.pub',
}
motd::script { 'ganeti-master-motd':
ensure => present,
source => 'puppet:///modules/profile/ganeti/motd',
}
if defined('$rapi_ro_user') and defined('$rapi_ro_password') {
# Authentication for RAPI (for now just a single read-only user)
$ro_password_hash = md5("${rapi_ro_user}:Ganeti Remote API:${rapi_ro_password}")
$real_content = "${rapi_ro_user} {HA1}${ro_password_hash} read\n"
} else {
# Provide a blank authentication file for the RAPI server (no users will be defined, thus denying all)
$real_content = ''
}
file { '/var/lib/ganeti/rapi':
ensure => directory,
owner => 'gnt-rapi',
group => 'gnt-masterd',
mode => '0750',
}
file { '/var/lib/ganeti/rapi/users':
ensure => present,
owner => 'gnt-rapi',
group => 'gnt-masterd',
mode => '0640',
content => $real_content,
require => Class['ganeti'],
}
# Allow SSH between ganeti cluster members
firewall::service { 'ganeti_ssh_cluster':
proto => 'tcp',
port => 22,
srange => $nodes,
}
# RAPI is the API of ganeti
firewall::service { 'ganeti_rapi_cluster':
proto => 'tcp',
port => 5080,
srange => $nodes + $rapi_nodes,
}
# Ganeti noded is responsible for all cluster/node actions
firewall::service { 'ganeti_noded_cluster':
proto => 'tcp',
port => 1811,
srange => $nodes,
}
# Ganeti confd provides a HA and fast way to query cluster configuration
firewall::service { 'ganeti_confd_cluster':
proto => 'udp',
port => 1814,
srange => $nodes,
}
# Ganeti mond is the monitoring daemon. Data is available via port 1815
firewall::service { 'ganeti_mond_cluster':
proto => 'tcp',
port => 1815,
srange => $nodes,
}
# DRBD is used for HA of disk images. Port range for ganeti is 11000-14999
firewall::service { 'ganeti_drbd':
proto => 'tcp',
port_range => [11000,14999],
srange => $nodes,
}
# Migration is done over TCP port
firewall::service { 'ganeti_migration':
proto => 'tcp',
port => 8102,
srange => $nodes,
}
file { '/usr/local/sbin/ganeti_rebalance':
ensure => present,
mode => '0755',
owner => 'root',
group => 'root',
source => 'puppet:///modules/profile/ganeti/ganeti_rebalance.sh',
}
# If ganeti_cluster fact is not defined, the node has not been added to a
# cluster yet, so don't monitor
if $facts['ganeti_cluster'] {
# Service monitoring
nrpe::monitor_service{ 'ganeti-noded':
description => 'ganeti-noded running',
nrpe_command => '/usr/lib/nagios/plugins/check_procs -w 1:2 -c 1:2 -u root -C ganeti-noded',
notes_url => 'https://wikitech.wikimedia.org/wiki/Ganeti',
}
prometheus::blackbox::check::tcp { 'ganeti-noded':
port => 1811,
ip_families => ['ip4',],
probe_runbook => 'https://wikitech.wikimedia.org/wiki/Ganeti',
}
nrpe::monitor_service{ 'ganeti-confd':
description => 'ganeti-confd running',
nrpe_command => '/usr/lib/nagios/plugins/check_procs -w 1:1 -c 1:1 -u gnt-confd -C ganeti-confd',
notes_url => 'https://wikitech.wikimedia.org/wiki/Ganeti',
}
nrpe::monitor_service{ 'ganeti-mond':
ensure => absent,
description => 'ganeti-mond running',
nrpe_command => '/usr/lib/nagios/plugins/check_procs -w 1:1 -c 1:1 -u root -C ganeti-mond',
notes_url => 'https://wikitech.wikimedia.org/wiki/Ganeti',
}
# Memory monitoring
ensure_packages( 'monitoring-plugins-contrib' ) # for pmp-check-unix-memory
$check_path = '/usr/lib/nagios/plugins/pmp-check-unix-memory'
$check_command = "${check_path} -c ${critical_memory} -w ${warning_memory}"
nrpe::monitor_service { 'ganeti_memory':
ensure => absent,
description => 'Ganeti memory',
nrpe_command => $check_command,
notes_url => 'https://wikitech.wikimedia.org/wiki/Ganeti#Memory_pressure',
}
if $facts['ganeti_master'] == $facts['fqdn'] {
nrpe::monitor_service { "https-gnt-rapi-${::site}":
description => "HTTPS Ganeti RAPI ${::site}",
nrpe_command => "/usr/lib/nagios/plugins/check_http -H ${facts['ganeti_cluster']} -p 5080 -S -e 401",
notes_url => 'https://www.mediawiki.org/wiki/Ganeti#RAPI_daemon',
}
nrpe::monitor_service{ 'ganeti-wconfd':
description => 'ganeti-wconfd running',
nrpe_command => '/usr/lib/nagios/plugins/check_procs -w 1:1 -c 1:1 -u gnt-masterd -C ganeti-wconfd',
notes_url => 'https://wikitech.wikimedia.org/wiki/Ganeti',
}
}
# Run a montly rebalancing for all nodegroups
# Note: We only run this on the first Wednesday of the month
# This should only be run on the master and absented from all other
# nodes
$hbal_presence = $facts['ganeti_master'] ? {
$facts['fqdn'] => absent,
default => absent,
}
systemd::timer::job { 'monthly_ganeti_rebalance':
ensure => $hbal_presence,
description => 'Run a monthly rebalance of Ganeti instances',
command => '/usr/local/sbin/ganeti_rebalance',
user => 'root',
interval => [{
'start' => 'OnCalendar',
'interval' => 'Wed *-*-01,02,03,04,05,06,07 11:47:00',
}
]
}
}
if $routed {
if $tap_ip4 == undef {
fail('In routed mode, `profile::ganeti::tap_ip4` must be defined.')
}
systemd::mask { 'isc-dhcp-relay.service': }
ensure_packages('isc-dhcp-relay')
# To be replaced by finer grained policies
# DHCP, BGP
nftables::file::input { 'ganeti_guest_vm_all_in':
content => "iifname \"tap*\" accept\n",
order => 10,
}
# TODO ideally get those from Netbox or data.yaml
$v6_prefixes = $::site ? {
'codfw' => {'private' => '2620:0:860:140', 'public' => '2620:0:860:5'},
'eqiad' => {'private' => '2620:0:861:140', 'public' => '2620:0:861:5'},
}
# Override the Package provided net-common script
file { '/usr/lib/ganeti/3.0/usr/lib/ganeti/net-common':
ensure => present,
owner => 'root',
group => 'root',
mode => '0755',
content => template('profile/ganeti/net-common.erb'),
}
sysctl::parameters { 'primary-nic-ip-forward':
values => {
'net.ipv4.ip_forward' => 1,
"net.ipv4.conf.${$facts['interface_primary']}.ip_forward" => 1,
"net.ipv6.conf.${$facts['interface_primary']}.accept_ra" => 2,
"net.ipv6.conf.${$facts['interface_primary']}.ip_forward" => 1,
'net.ipv6.conf.all.ip_forward' => 1,
},
}
class { 'bird':
bfd => false,
do_ipv6 => true,
multihop => false,
config_template => 'bird/bird_ganeti.conf.erb',
}
}
}
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