1 files changed, 55 insertions, 0 deletions
diff --git a/manifests/subsystem/sysctl.pp b/manifests/subsystem/sysctl.pp
new file mode 100644
index 0000000..1df0348
--- /dev/null
+++ b/manifests/subsystem/sysctl.pp
@@ -0,0 +1,55 @@
+class nodo::subsystem::sysctl {
+  # 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,
+  }
+}
+
+class sysctl::appliance($kernel_panic = hiera('nodo::sysctl::appliance', '20')) {
+  file { "/etc/sysctl.d/kernel.panic.conf":
+    owner   => "root",
+    group   => "root",
+    mode    => 0644,
+    ensure  => present,
+    content => "kernel.panic = ${kernel_panic}\n",
+  }
+
+  exec { "/bin/echo '${kernel_panic}' > /proc/sys/kernel/panic":
+    subscribe   => File["/etc/sysctl.d/kernel.panic.conf"],
+    refreshonly => true,
+  }
+}