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# File 'modules/base/manifests/kernel.pp', line 8
class base::kernel(
$overlayfs,
) {
if ! $overlayfs {
kmod::blacklist { 'wmf_overlay':
modules => [
'overlayfs',
'overlay',
],
}
} else {
kmod::blacklist { 'wmf_overlay':
ensure => absent,
}
}
kmod::blacklist { 'wmf':
modules => [
'aufs',
'usbip-core',
'usbip-host',
'vhci-hcd',
'dccp',
'dccp_ipv6',
'dccp_ipv4',
'dccp_probe',
'dccp_diag',
'n_hdlc',
'intel_cstate',
'intel_rapl_perf',
'intel_uncore',
'parport',
'parport_pc',
'ppdev',
'acpi_power_meter',
'bluetooth',
'v4l2-common',
'floppy',
'cdrom',
],
}
if (versioncmp($::kernelversion, '4.4') >= 0) {
kmod::blacklist { 'linux44':
modules => [ 'asn1_decoder', 'macsec' ],
}
}
# This section is for blacklisting modules per server model.
# It was originally started for acpi_pad issues on R320 (T162850)
# but is meant to be extended as needed.
case $::productname {
'PowerEdge R320': {
kmod::blacklist { 'r320':
modules => [ 'acpi_pad' ],
}
}
default: {}
}
# Settings to mitigate fragmentsmack. The low settings need to be applied
# before the high settings, otherwise the new high settings are lower than
# the current kernel defaults which results in sysctl rejecting the value
# The latest kernel update for stretch also pushes these settings by default
# in the kernel, so at some point this can be removed in puppet
sysctl::parameters { 'ipfrag_low':
values => {
'net.ipv4.ipfrag_low_thresh' => '196608',
'net.ipv6.ip6frag_low_thresh' => '196608',
},
priority => 10,
before => Sysctl::Parameters['ipfrag_high']
}
sysctl::parameters { 'ipfrag_high':
values => {
'net.ipv4.ipfrag_high_thresh' => '262144',
'net.ipv6.ip6frag_high_thresh' => '262144',
},
priority => 11,
}
file { '/usr/lib/nagios/plugins/check_microcode':
source => 'puppet:///modules/base/check-microcode.py',
owner => 'root',
group => 'root',
mode => '0555',
}
nrpe::monitor_service { 'cpu_microcode_status':
ensure => 'present',
description => 'Check whether microcode mitigations for CPU vulnerabilities are applied',
nrpe_command => '/usr/lib/nagios/plugins/check_microcode',
require => File['/usr/lib/nagios/plugins/check_microcode'],
contact_group => 'admins',
check_interval => 1440,
retry_interval => 5,
notes_url => 'https://wikitech.wikimedia.org/wiki/Microcode',
}
}
|