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class nodo::subsystem::sysctl {
class { 'nodo::subsystem::sysctl::disable_ipv6': }
class { 'nodo::subsystem::sysctl::tcp_challenge_ack_limit': }
# Root exploit fix, see http://wiki.debian.org/mmap_min_addr
# Maybe this can be remove in the future or included in a sysctl puppet module
file { "/etc/sysctl.d/mmap_min_addr.conf":
owner => "root",
group => "root",
mode => 0644,
ensure => present,
content => "vm.mmap_min_addr = 4096\n",
}
# See http://www.linux-vserver.org/Frequently_Asked_Questions
file { "/etc/sysctl.d/net.ipv4.conf.all.promote_secondaries.conf":
owner => "root",
group => "root",
mode => 0644,
ensure => present,
content => "net.ipv4.conf.all.promote_secondaries = 1\n",
}
exec { "/etc/init.d/procps restart":
subscribe => File["/etc/sysctl.d/mmap_min_addr.conf", "/etc/sysctl.d/net.ipv4.conf.all.promote_secondaries.conf"],
refreshonly => true,
}
$printk_levels = '3 4 1 3'
file { "/etc/sysctl.d/kernel.printk.conf":
owner => "root",
group => "root",
mode => 0644,
ensure => present,
content => "kernel.printk = ${printk_levels}\n",
}
exec { "/bin/echo '${printk_levels}' > /proc/sys/kernel/printk":
subscribe => File["/etc/sysctl.d/kernel.printk.conf"],
refreshonly => true,
}
}
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