From 4fb32751f9c8e82a729780fc5dedae71cecc32b6 Mon Sep 17 00:00:00 2001 From: baigk Date: Wed, 5 Aug 2015 02:00:31 -0400 Subject: support deployment os of centos7.1 with cobbler for compass JIRA: COMPASS-5 Change-Id: I6aa19548a17791f8862c6dba00380ef946ea3108 Signed-off-by: baigk --- .../cobbler/snippets/kickstart_sysctl.conf | 72 ++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 deploy/adapters/cobbler/snippets/kickstart_sysctl.conf (limited to 'deploy/adapters/cobbler/snippets/kickstart_sysctl.conf') diff --git a/deploy/adapters/cobbler/snippets/kickstart_sysctl.conf b/deploy/adapters/cobbler/snippets/kickstart_sysctl.conf new file mode 100644 index 00000000..c227ecfa --- /dev/null +++ b/deploy/adapters/cobbler/snippets/kickstart_sysctl.conf @@ -0,0 +1,72 @@ +cat << EOF > /etc/sysctl.conf +#raw +# Kernel sysctl configuration file for Red Hat Linux +# +# For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and +# sysctl.conf(5) for more details. + +# Controls IP packet forwarding +net.ipv4.ip_forward = 0 + +# Controls source route verification +net.ipv4.conf.default.rp_filter = 1 + +# Do not accept source routing +net.ipv4.conf.default.accept_source_route = 0 + +# Controls the System Request debugging functionality of the kernel +kernel.sysrq = 0 + +# Controls whether core dumps will append the PID to the core filename. +# Useful for debugging multi-threaded applications. +kernel.core_uses_pid = 1 + +# Controls the use of TCP syncookies +net.ipv4.tcp_syncookies = 1 + +# Controls the default maxmimum size of a mesage queue +kernel.msgmnb = 65536 + +# Controls the maximum size of a message, in bytes +kernel.msgmax = 65536 + +# Controls the maximum shared segment size, in bytes +kernel.shmmax = 68719476736 + +# Controls the maximum number of shared memory segments, in pages +kernel.shmall = 4294967296 + +# increase TCP max buffer size settable using setsockopt() +net.core.rmem_max = 16777216 +net.core.wmem_max = 16777216 + +# increase Linux autotuning TCP buffer limit +net.ipv4.tcp_rmem = 4096 87380 16777216 +net.ipv4.tcp_wmem = 4096 65536 16777216 + +# increase the length of the processor input queue +net.core.netdev_max_backlog = 30000 +net.ipv4.tcp_max_syn_backlog = 4096 + +# recommended default congestion control is htcp +net.ipv4.tcp_congestion_control=htcp + +# recommended for hosts with jumbo frames enabled +net.ipv4.tcp_mtu_probing=1 + +# increase client parallel connections +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 +net.core.somaxconn = 8192 + +# avoid caching tcp network transfer statistics +net.ipv4.route.flush=1 +#end raw +EOF +sysctl -p -- cgit 1.2.3-korg