Man pages: refactor common options: --sysctl

As promised, harder and harder to review. Please take your time
with this one.

For IPC, I went with the list form. For net, I used the single-
sentence form instead of a one-element list.

The container/pod diffs are clumsy, sorry. Maybe it's time to
start thinking of a more flexible conditional mechanism, but
I'd really like to avoid that so I hope this is acceptable.

In the first sentence I went with 'namespaced' (final 'd') in
all instances. I also got rid of the 'new' in 'new pod' in
pod-clone.

Signed-off-by: Ed Santiago <santiago@redhat.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/docs/source/markdown/options/sysctl.md b/docs/source/markdown/options/sysctl.md
new file mode 100644
index 000000000..6fc1bbebe
--- /dev/null
+++ b/docs/source/markdown/options/sysctl.md
@@ -0,0 +1,21 @@
+#### **--sysctl**=*name=value*
+
+Configure namespaced kernel parameters <<at runtime|for all containers in the pod>>.
+
+For the IPC namespace, the following sysctls are allowed:
+
+- kernel.msgmax
+- kernel.msgmnb
+- kernel.msgmni
+- kernel.sem
+- kernel.shmall
+- kernel.shmmax
+- kernel.shmmni
+- kernel.shm_rmid_forced
+- Sysctls beginning with fs.mqueue.\*
+
+Note: <<if you use the **--ipc=host** option|if the ipc namespace is not shared within the pod>>, the above sysctls are not allowed.
+
+For the network namespace, only sysctls beginning with net.\* are allowed.
+
+Note: <<if you use the **--network=host** option|if the network namespace is not shared within the pod>>, the above sysctls are not allowed.