Add a note on availability of tcp_syncookies syctl (#7627)

* Add a note on availability of tcp_syncookies syctl Sysctl `net.ipv4.tcp_syncookies` is not availalbe on 4.4 kernel as it's not namespaced yet. * updating to use {: .note} notation per https://kubernetes.io/docs/home/contribute/style-guide/#note
2018-03-05 05:26:52 +09:00
parent 313f89c2d9
commit bc1b890f74
1 changed files with 3 additions and 0 deletions
@@ -70,6 +70,9 @@ For Kubernetes 1.4, the following sysctls are supported in the _safe_ set:
 - `net.ipv4.ip_local_port_range`,
 - `net.ipv4.tcp_syncookies`.

+**Note**: The example `net.ipv4.tcp_syncookies` is not namespaced on Linux kernel version 4.4 or lower.
+{: .note}
+
 This list will be extended in future Kubernetes versions when the kubelet
 supports better isolation mechanisms.