docs: added note about net.ipv4.tcp_tw_recycle

Author: tmshn

Diff for: config/last_updated.json

@@ -10,7 +10,7 @@
     "apache-to-mongodb": "2016-06-06 04:47:13 UTC",
     "apache-to-riak": "2016-06-06 04:47:13 UTC",
     "apache-to-s3": "2016-06-06 04:47:13 UTC",
-    "before-install": "2017-02-24 18:44:45 UTC",
+    "before-install": "2017-12-21 06:46:42 UTC",
     "buf_file": "2016-12-07 10:53:25 UTC",
     "buf_memory": "2016-10-21 06:29:58 UTC",
     "buffer-plugin-overview": "2016-12-07 08:32:02 UTC",
@@ -138,7 +138,7 @@
     "apache-to-mongodb": "2016-02-22 23:29:31 UTC",
     "apache-to-riak": "2015-12-01 21:20:32 UTC",
     "apache-to-s3": "2015-12-01 21:20:32 UTC",
-    "before-install": "2017-02-24 18:44:45 UTC",
+    "before-install": "2017-12-21 06:46:42 UTC",
     "buf_file": "2016-12-07 10:53:25 UTC",
     "buf_memory": "2016-10-21 06:29:58 UTC",
     "buffer-plugin-overview": "2016-12-07 08:32:02 UTC",
@@ -287,7 +287,7 @@
     "api-plugin-output": "2016-06-13 06:11:23 UTC",
     "api-plugin-parser": "2016-06-13 06:11:23 UTC",
     "api-plugin-storage": "2016-06-13 06:11:23 UTC",
-    "before-install": "2016-06-24 05:33:02 UTC",
+    "before-install": "2017-12-21 06:46:42 UTC",
     "buffer-plugin-overview": "2016-06-13 06:11:23 UTC",
     "buffer-section": "2017-02-28 12:36:16 UTC",
     "bug-tracking": "2016-06-13 06:11:23 UTC",

Diff for: docs/v0.10/before-install.txt

@@ -38,6 +38,8 @@ For high load environments consisting of many Fluentd instances, please add thes
     net.ipv4.tcp_tw_reuse = 1
     net.ipv4.ip_local_port_range = 10240    65535
 
+NOTE: <code>net.ipv4.tcp_tw_recycle</code> option is <a href="https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4396e46187ca5070219b81773c4e65088dac50cc">removed</a> since Linux kernel v4.12 (typing <code>uname -r</code> shows your version). Even in previous versions, you should not change this option if source servers locate behind a NAT, in which case source IPs are unique for multiple sources.
+
 
 
 

Diff for: docs/v1.0/before-install.txt

@@ -31,6 +31,8 @@ For high load environments consisting of many Fluentd instances, please add thes
     net.ipv4.tcp_tw_reuse = 1
     net.ipv4.ip_local_port_range = 10240    65535
 
+NOTE: <code>net.ipv4.tcp_tw_recycle</code> option is <a href="https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4396e46187ca5070219b81773c4e65088dac50cc">removed</a> since Linux kernel v4.12 (typing <code>uname -r</code> shows your version). Even in previous versions, you should not change this option if source servers locate behind a NAT, in which case source IPs are unique for multiple sources.
+