[root@maxiaoke deploy-kubernetes]# cat conf/k8s-sysctl.conf
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
[root@maxiaoke deploy-kubernetes]# gosh push -i node.ip conf/k8s-sysctl.conf /etc/sysctl.d/
[root@maxiaoke deploy-kubernetes]# gosh cmd -i node.ip "sysctl --system"

net.core.netdev_max_backlog = 65535
net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_syn_retries = 2
net.ipv4.tcp_synack_retries = 2
net.ipv4.tcp_max_syn_backlog = 65535
net.core.somaxconn = 65535
net.ipv4.tcp_max_tw_buckets = 8192
net.ipv4.ip_local_port_range = 10240 65000
vm.swappiness = 0