Hello, cluster v1.21.5+k3s2 is installed, after restarting the service ( k3s) it applies the default kernel parameters (
net.netfilter.nf_conntrack_max). Ubuntu 18.04.5 LTS root@drm-set1-master01:~# sysctl -p
net.core.somaxconn = 65535
net.ipv4.ip_local_port_range = 1024 65535
net.nf_conntrack_max = 4194304
net.netfilter.nf_conntrack_max = 4194304
fs.file-max = 2097152
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_max_syn_backlog = 65535
net.ipv4.ip_forward = 1
net.ipv4.ip_local_reserved_ports = 30000-32767
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-arptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
root@drm-set1-master01:~# systemctl restart k3s
root@drm-set1-master01:~# sysctl -a | grep
net.netfilter.nf_conntrack_max
sysctl: reading key "net.ipv6.conf.all.stable_secret"
sysctl: reading key "net.ipv6.conf.cni0.stable_secret"
sysctl: reading key "net.ipv6.conf.default.stable_secret"
sysctl: reading key "net.ipv6.conf.ens160.stable_secret"
sysctl: reading key "net.ipv6.conf.flannel/1.stable_secret"
sysctl: reading key "net.ipv6.conf.kube-ipvs0.stable_secret"
sysctl: reading key "net.ipv6.conf.lo.stable_secret"
sysctl: reading key "net.ipv6.conf.veth000ece3e.stable_secret"
sysctl: reading key "net.ipv6.conf.veth1412c3ee.stable_secret"
sysctl: reading key "net.ipv6.conf.veth3d3b54df.stable_secret"
net.netfilter.nf_conntrack_max = 131072