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authorYibo Cai <yibo.cai@arm.com>2017-12-21 17:20:09 +0800
committerYibo Cai <yibo.cai@arm.com>2017-12-22 10:17:44 +0800
commit15f7ae54b0a98418a89e46b64e23bb7fbe9bd7e6 (patch)
tree226f464c81521093abb8e0db89d18421ea283e9a
parent4074d39e93d7e7697dd2aaad2e08433ca0a60221 (diff)
deploy/cobbler: drop tcp_tw_recycle in sysctl.conf
Currently, tcp_tw_recycle is set explicitly in sysctl.conf when installing OS by cobbler. This option is removed in kernel4.12, current sysctl.conf breaks sysctl function and K8s deployment. Actually, tcp_tw_recycle is considered broken and not recommended to use. We may simply drop this option to be compatible with different kernel versions. References: - https://vincent.bernat.im/en/blog/2014-tcp-time-wait-state-linux - https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4396e46187ca5070219b81773c4e65088dac50cc Change-Id: I2cd89db3d423c811ba58eb5960f3cc718475be5f Signed-off-by: Yibo Cai <yibo.cai@arm.com>
-rw-r--r--deploy/adapters/cobbler/snippets/kickstart_sysctl.conf1
-rw-r--r--deploy/adapters/cobbler/snippets/preseed_sysctl.conf1
-rw-r--r--deploy/adapters/cobbler/snippets/sysctl.xml1
3 files changed, 0 insertions, 3 deletions
diff --git a/deploy/adapters/cobbler/snippets/kickstart_sysctl.conf b/deploy/adapters/cobbler/snippets/kickstart_sysctl.conf
index c227ecf..112f010 100644
--- a/deploy/adapters/cobbler/snippets/kickstart_sysctl.conf
+++ b/deploy/adapters/cobbler/snippets/kickstart_sysctl.conf
@@ -59,7 +59,6 @@ net.ipv4.ip_local_port_range = 15000 61000
net.ipv4.tcp_fin_timeout=30
# fast cycling of sockets in time_wait state and re-using them
-net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_reuse = 1
# increase the maximum number of requests queued to a listen socket
diff --git a/deploy/adapters/cobbler/snippets/preseed_sysctl.conf b/deploy/adapters/cobbler/snippets/preseed_sysctl.conf
index c227ecf..112f010 100644
--- a/deploy/adapters/cobbler/snippets/preseed_sysctl.conf
+++ b/deploy/adapters/cobbler/snippets/preseed_sysctl.conf
@@ -59,7 +59,6 @@ net.ipv4.ip_local_port_range = 15000 61000
net.ipv4.tcp_fin_timeout=30
# fast cycling of sockets in time_wait state and re-using them
-net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_reuse = 1
# increase the maximum number of requests queued to a listen socket
diff --git a/deploy/adapters/cobbler/snippets/sysctl.xml b/deploy/adapters/cobbler/snippets/sysctl.xml
index fe13bf7..42f9597 100644
--- a/deploy/adapters/cobbler/snippets/sysctl.xml
+++ b/deploy/adapters/cobbler/snippets/sysctl.xml
@@ -62,7 +62,6 @@ net.ipv4.ip_local_port_range = 15000 61000
net.ipv4.tcp_fin_timeout=30
# fast cycling of sockets in time_wait state and re-using them
-net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_reuse = 1
# increase the maximum number of requests queued to a listen socket