diff options
Diffstat (limited to 'roles/kubernetes/standalone')
5 files changed, 60 insertions, 0 deletions
diff --git a/roles/kubernetes/standalone/base/defaults/main.yml b/roles/kubernetes/standalone/base/defaults/main.yml index b0c14b11..3f6b52bb 100644 --- a/roles/kubernetes/standalone/base/defaults/main.yml +++ b/roles/kubernetes/standalone/base/defaults/main.yml @@ -12,3 +12,6 @@ kubernetes_standalone_pod_cidr: 192.168.255.0/24 kubernetes_standalone_resolv_conf: /etc/resolv.conf kubernetes_standalone_cni_variant: with-portmap + +kubernetes_standalone_local_services_tcp: [] +kubernetes_standalone_local_services_udp: [] diff --git a/roles/kubernetes/standalone/base/handlers/main.yml b/roles/kubernetes/standalone/base/handlers/main.yml index 26438551..8f5d5232 100644 --- a/roles/kubernetes/standalone/base/handlers/main.yml +++ b/roles/kubernetes/standalone/base/handlers/main.yml @@ -4,3 +4,9 @@ name: kubelet.service state: restarted daemon_reload: yes + +- name: restart local-services + systemd: + name: kube-standalone-local-services.service + state: restarted + daemon_reload: yes diff --git a/roles/kubernetes/standalone/base/tasks/main.yml b/roles/kubernetes/standalone/base/tasks/main.yml index 241c3136..d7f47ff4 100644 --- a/roles/kubernetes/standalone/base/tasks/main.yml +++ b/roles/kubernetes/standalone/base/tasks/main.yml @@ -32,3 +32,23 @@ template: src: "cni-{{ kubernetes_standalone_cni_variant }}.conflist.j2" dest: /etc/cni/net.d/kube-standalone.conflist + +- name: install local-services iptables script + template: + src: kube-standalone-local-services.sh.j2 + dest: /usr/local/sbin/kube-standalone-local-services.sh + mode: 0755 + notify: restart local-services + +- name: install local-services systemd unit + template: + src: kube-standalone-local-services.service.j2 + dest: /etc/systemd/system/kube-standalone-local-services.service + notify: restart local-services + +- name: make sure local-services is enabled and started + systemd: + daemon_reload: yes + name: kube-standalone-local-services.service + state: started + enabled: yes diff --git a/roles/kubernetes/standalone/base/templates/kube-standalone-local-services.service.j2 b/roles/kubernetes/standalone/base/templates/kube-standalone-local-services.service.j2 new file mode 100644 index 00000000..ccdbfcc9 --- /dev/null +++ b/roles/kubernetes/standalone/base/templates/kube-standalone-local-services.service.j2 @@ -0,0 +1,12 @@ +[Unit] +Description=Install iptables rules for local services avaialbe to standalone kubelet pods +After=network.target + +[Service] +Type=oneshot +ExecStart=/usr/local/sbin/kube-standalone-local-services.sh +RemainAfterExit=true +StandardOutput=journal + +[Install] +WantedBy=multi-user.target diff --git a/roles/kubernetes/standalone/base/templates/kube-standalone-local-services.sh.j2 b/roles/kubernetes/standalone/base/templates/kube-standalone-local-services.sh.j2 new file mode 100644 index 00000000..d29e6a34 --- /dev/null +++ b/roles/kubernetes/standalone/base/templates/kube-standalone-local-services.sh.j2 @@ -0,0 +1,19 @@ +#!/bin/bash + +iptables -t nat -N kube-local-services > /dev/null 2>&1 +iptables -t nat -F kube-local-services + +{% if kubernetes_standalone_local_services_tcp | length > 0 %} +iptables -t nat -A kube-local-services -p tcp --match multiport --dports {{ kubernetes_standalone_local_services_tcp | join(',') }} -i kube-bridge -d {{ kubernetes_standalone_pod_cidr | ipaddr('1') | ipaddr('address') }} -j DNAT --to-destination 127.0.0.1 +{% endif %} +{% if kubernetes_standalone_local_services_udp | length > 0 %} +iptables -t nat -A kube-local-services -p udp --match multiport --dports {{ kubernetes_standalone_local_services_udp | join(',') }} -i kube-bridge -d {{ kubernetes_standalone_pod_cidr | ipaddr('1') | ipaddr('address') }} -j DNAT --to-destination 127.0.0.1 +{% endif %} + +iptables -t nat -C PREROUTING -j kube-local-services > /dev/null 2>&1 +if [ $? -ne 0 ]; then + iptables -t nat -I PREROUTING 1 -j kube-local-services +fi +echo 1 > /proc/sys/net/ipv4/conf/kube-bridge/route_localnet + +exit 0 |