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--- systemd-sysctl [2018/11/16 10:51] – created rpjday
+++ systemd-sysctl [2018/11/16 11:04] (current) – [50-default.conf] rpjday
@@ Line 8: / Line 8: @@
   * [[https://www.freedesktop.org/software/systemd/man/sysctl.d.html|FreeDesktop page]]
+===== File list =====
+  * ''/etc/''
+    * ''sysctl.conf'' [empty]
+    * ''sysctl.d/''
+      * ''99-sysctl.conf'' [link to above so empty]
+  * ''/usr/lib/''
+    * ''systemd/''
+      * ''systemd-sysctl''
+      * ''system/''
+        * ''systemd-sysctl.service''
+        * ''sysinit.target.wants/''
+          * ''systemd-sysctl.service''
+    * ''sysctl.d/''
+      * ''10-default-yama-scope.conf''
+      * ''20-pptpd.conf''
+      * ''50-coredump.conf''
+      * ''50-default.conf''
+      * ''50-libkcapi-optmem_max.conf''
+      * ''60-libvirtd.conf''
+===== Config files =====
+==== 10-default-yama-scope.conf ====
+<code>
+kernel.yama.ptrace_scope = 0
+</code>
+==== 20-pptpd.conf ====
+<code>
+net.ipv4.ip_forward = 1
+</code>
+==== 50-coredump.conf ====
+<code>
+kernel.core_pattern=|/usr/lib/systemd/systemd-coredump %P %u %g %s %t %c %h %e
+</code>
+==== 50-default.conf ====
+<code>
+# Use kernel.sysrq = 1 to allow all keys.
+# See https://www.kernel.org/doc/html/latest/admin-guide/sysrq.html for a list
+# of values and keys.
+kernel.sysrq = 16
+# Append the PID to the core filename
+kernel.core_uses_pid = 1
+# Source route verification
+net.ipv4.conf.all.rp_filter = 1
+# Do not accept source routing
+net.ipv4.conf.all.accept_source_route = 0
+# Promote secondary addresses when the primary address is removed
+net.ipv4.conf.all.promote_secondaries = 1
+# Fair Queue CoDel packet scheduler to fight bufferbloat
+net.core.default_qdisc = fq_codel
+# Enable hard and soft link protection
+fs.protected_hardlinks = 1
+fs.protected_symlinks = 1
+</code>
+==== 50-libkcapi-optmem_max.conf ====
+<code>
+net.core.optmem_max = 81920
+</code>
+==== 60-libvirtd.conf ====
+<code>
+fs.aio-max-nr = 1048576
+</code>