kubernetes: add node pruning role

1 files changed, 37 insertions, 0 deletions

diff --git a/roles/kubernetes/kubeadm/base/templates/net_kubeguard/peer.service.j2 b/roles/kubernetes/kubeadm/base/templates/net_kubeguard/peer.service.j2
new file mode 100644
index 00000000..c9d96a5a
--- /dev/null
+++ b/roles/kubernetes/kubeadm/base/templates/net_kubeguard/peer.service.j2
@@ -0,0 +1,37 @@
+[Unit]
+Description=Kubernetes Network Peer {{ peer }}
+After=network.target
+Requires=kubeguard-interface.service
+After=kubeguard-interface.service
+
+{% set pod_ip_self = kubernetes.pod_ip_range | ipsubnet(kubernetes.pod_ip_range_size, kubeguard.node_index[inventory_hostname]) | ipaddr(1) | ipaddr('address') -%}
+{% set pod_net_peer = kubernetes.pod_ip_range | ipsubnet(kubernetes.pod_ip_range_size, kubeguard.node_index[peer]) -%}
+{% set direct_zone = kubeguard.direct_net_zones | default({}) | kubeguard_direct_net_zone(inventory_hostname, peer) -%}
+{% if direct_zone %}
+{% set direct_ip = kubeguard.direct_net_zones[direct_zone].transfer_net | ipaddr(kubeguard.node_index[inventory_hostname]) %}
+{% set direct_interface = kubeguard.direct_net_zones[direct_zone].node_interface[inventory_hostname] %}
+{% set direct_ip_peer = kubeguard.direct_net_zones[direct_zone].transfer_net | ipaddr(kubeguard.node_index[peer]) %}
+{% else %}
+{% set tun_ip = kubernetes.pod_ip_range | ipsubnet(kubernetes.pod_ip_range_size, 0) | ipaddr(kubeguard.node_index[peer]) -%}
+{% set wg_pubkey = hostvars[peer].kubeguard_wireguard_pubkey.stdout -%}
+{% set wg_host = hostvars[peer].external_ip_cooked | default(hostvars[peer].ansible_default_ipv4.address) -%}
+{% set wg_port = hostvars[peer].kubeguard_wireguard_port | default(51820) -%}
+{% set wg_allowedips = (tun_ip | ipaddr('address')) + "/32," + pod_net_peer %}
+{% endif %}
+[Service]
+Type=oneshot
+{% if direct_zone %}
+ExecStart=/sbin/ip addr add {{ direct_ip }} dev {{ direct_interface }}
+ExecStart=/sbin/ip link set up dev {{ direct_interface }}
+ExecStart=/sbin/ip route add {{ pod_net_peer }} via {{ direct_ip_peer | ipaddr('address') }} src {{ pod_ip_self }}
+ExecStop=/sbin/ip route del {{ pod_net_peer }}
+ExecStop=/sbin/ip link set down dev {{ direct_interface }}
+ExecStop=/sbin/ip addr del {{ direct_ip }} dev {{ direct_interface }}
+{% else %}
+ExecStart=/usr/bin/wg set kubeguard-wg0 peer {{ wg_pubkey }} allowed-ips {{ wg_allowedips }} endpoint {{ wg_host }}:{{ wg_port }} persistent-keepalive 10
+ExecStop=/usr/bin/wg set kubeguard-wg0 peer {{ wg_pubkey }} remove
+{% endif %}
+RemainAfterExit=yes
+
+[Install]
+WantedBy=multi-user.target