diff options
Diffstat (limited to 'roles/kubernetes/kubeadm')
24 files changed, 791 insertions, 18 deletions
diff --git a/roles/kubernetes/kubeadm/base/filter_plugins/net_kubeguard.py b/roles/kubernetes/kubeadm/base/filter_plugins/net_kubeguard.py new file mode 100644 index 00000000..2220e545 --- /dev/null +++ b/roles/kubernetes/kubeadm/base/filter_plugins/net_kubeguard.py @@ -0,0 +1,33 @@ +from __future__ import (absolute_import, division, print_function) +__metaclass__ = type + +from ansible import errors + + +def kubeguard_direct_net_zone(data, myname, peer): + try: + zones = [] + for zone in data: + if myname in data[zone]['node_interface'] and peer in data[zone]['node_interface']: + zones.append(zone) + + if not zones: + return "" + if len(zones) > 1: + raise errors.AnsibleFilterError("host '%s' and '%s' have multiple direct net zones in common: %s" % + (myname, peer, zones.join(','))) + return zones[0] + + except Exception as e: + raise errors.AnsibleFilterError("kubeguard_direct_net_zones(): %s" % str(e)) + + +class FilterModule(object): + + ''' Kubeguard Network Filters ''' + filter_map = { + 'kubeguard_direct_net_zone': kubeguard_direct_net_zone, + } + + def filters(self): + return self.filter_map diff --git a/roles/kubernetes/kubeadm/base/tasks/main.yml b/roles/kubernetes/kubeadm/base/tasks/main.yml index 2d2bd324..7d882f31 100644 --- a/roles/kubernetes/kubeadm/base/tasks/main.yml +++ b/roles/kubernetes/kubeadm/base/tasks/main.yml @@ -3,7 +3,7 @@ apt: name: - haproxy - - hatop + - haproxyctl - "kubeadm={{ kubernetes_version }}-00" - "kubectl={{ kubernetes_version }}-00" state: present @@ -48,16 +48,13 @@ state: "{% if haproxy_config is changed %}restarted{% else %}started{% endif %}" enabled: yes -- name: add hatop config for shells - loop: - - zsh - - bash - blockinfile: - path: "/root/.{{ item }}rc" - create: yes - marker: "### {mark} ANSIBLE MANAGED BLOCK for hatop ###" - content: | - alias hatop="hatop -s /var/run/haproxy/admin.sock" +## loading the modules temporarly because kubeadm will complain if they are not there +# but i don't think it is necessary to make this persistent, also ignoring changes here +- name: load module br_netfilter to satisfy kubeadm init/join + modprobe: + name: br_netfilter + state: present + changed_when: false -# - name: prepare network plugin -# include_tasks: "net_{{ kubernetes_network_plugin }}.yml" +- name: prepare network plugin + include_tasks: "net_{{ kubernetes_network_plugin }}.yml" diff --git a/roles/kubernetes/kubeadm/base/tasks/net_kube-router.yml b/roles/kubernetes/kubeadm/base/tasks/net_kube-router.yml new file mode 100644 index 00000000..246b20bc --- /dev/null +++ b/roles/kubernetes/kubeadm/base/tasks/net_kube-router.yml @@ -0,0 +1,8 @@ +--- +- name: install packages needed for debugging kube-router + apt: + name: + - iptables + - ipvsadm + - ipset + state: present diff --git a/roles/kubernetes/kubeadm/base/tasks/net_kubeguard.yml b/roles/kubernetes/kubeadm/base/tasks/net_kubeguard.yml new file mode 100644 index 00000000..2d706a03 --- /dev/null +++ b/roles/kubernetes/kubeadm/base/tasks/net_kubeguard.yml @@ -0,0 +1,95 @@ +--- +- name: make sure kubernetes_network_plugin_replaces_kube_proxy is not set + when: + - kubernetes_network_plugin_variant != 'with-kube-router' + run_once: yes + assert: + msg: "kubeguard variant '{{ kubernetes_network_plugin_variant }}' can not replace kube-proxy please set kubernetes_network_plugin_replaces_kube_proxy to false or configure a differnt kubernetes_network_plugin_variant." + that: + - not kubernetes_network_plugin_replaces_kube_proxy + + +- name: install wireguard + import_role: + name: wireguard/base + +- name: create network config directory + file: + name: /var/lib/kubeguard/ + state: directory + +- name: install ifupdown script + template: + src: net_kubeguard/ifupdown.sh.j2 + dest: /var/lib/kubeguard/ifupdown.sh + mode: 0755 + # TODO: notify reload... this is unfortunately already to late because + # it must probably be brought down by the old version of the script + +- name: generate wireguard private key + shell: "umask 077; wg genkey > /var/lib/kubeguard/kubeguard-wg0.privatekey" + args: + creates: /var/lib/kubeguard/kubeguard-wg0.privatekey + +- name: fetch wireguard public key + shell: "wg pubkey < /var/lib/kubeguard/kubeguard-wg0.privatekey" + register: kubeguard_wireguard_pubkey + changed_when: false + check_mode: no + +- name: install systemd service unit for network interface + template: + src: net_kubeguard/interface.service.j2 + dest: /etc/systemd/system/kubeguard-interface.service + # TODO: notify: reload??? + +- name: make sure kubeguard interface service is started and enabled + systemd: + daemon_reload: yes + name: kubeguard-interface.service + state: started + enabled: yes + +- name: install systemd units for every kubeguard peer + loop: "{{ groups['_kubernetes_nodes_'] | difference(inventory_hostname) }}" + loop_control: + loop_var: peer + template: + src: net_kubeguard/peer.service.j2 + dest: "/etc/systemd/system/kubeguard-peer-{{ peer }}.service" + # TODO: notify restart for peers that change... + +- name: make sure kubeguard peer services are started and enabled + loop: "{{ groups['_kubernetes_nodes_'] | difference(inventory_hostname) }}" + systemd: + daemon_reload: yes + name: "kubeguard-peer-{{ item }}.service" + state: started + enabled: yes + +- name: enable IPv4 forwarding + sysctl: + name: net.ipv4.ip_forward + value: '1' + sysctl_set: yes + state: present + reload: yes + +- name: create cni config directory + file: + name: /etc/cni/net.d + state: directory + +- name: install cni config + template: + src: net_kubeguard/cni.json.j2 + dest: /etc/cni/net.d/kubeguard.json + +- name: install packages needed for debugging kube-router + when: kubernetes_network_plugin_variant == 'with-kube-router' + apt: + name: + - iptables + - ipvsadm + - ipset + state: present diff --git a/roles/kubernetes/kubeadm/base/tasks/net_none.yml b/roles/kubernetes/kubeadm/base/tasks/net_none.yml new file mode 100644 index 00000000..0924c458 --- /dev/null +++ b/roles/kubernetes/kubeadm/base/tasks/net_none.yml @@ -0,0 +1,7 @@ +--- +- name: make sure kubernetes_network_plugin_replaces_kube_proxy is not set + run_once: yes + assert: + msg: "this network plugin can not replace kube-proxy please set kubernetes_network_plugin_replaces_kube_proxy to false." + that: + - not kubernetes_network_plugin_replaces_kube_proxy diff --git a/roles/kubernetes/kubeadm/base/templates/net_kubeguard/cni.json.j2 b/roles/kubernetes/kubeadm/base/templates/net_kubeguard/cni.json.j2 new file mode 100644 index 00000000..eb9e3d61 --- /dev/null +++ b/roles/kubernetes/kubeadm/base/templates/net_kubeguard/cni.json.j2 @@ -0,0 +1,12 @@ +{ + "cniVersion": "0.3.1", + "name": "kubeguard", + "type": "bridge", + "bridge": "kubeguard-br0", + "isDefaultGateway": true, + "hairpinMode": true, + "ipam": { + "type": "host-local", + "subnet": "{{ kubernetes.pod_ip_range | ipsubnet(kubernetes.pod_ip_range_size, kubeguard.node_index[inventory_hostname]) }}" + } +} diff --git a/roles/kubernetes/kubeadm/base/templates/net_kubeguard/ifupdown.sh.j2 b/roles/kubernetes/kubeadm/base/templates/net_kubeguard/ifupdown.sh.j2 new file mode 100644 index 00000000..f940d413 --- /dev/null +++ b/roles/kubernetes/kubeadm/base/templates/net_kubeguard/ifupdown.sh.j2 @@ -0,0 +1,55 @@ +#!/bin/bash + +set -e + +CONF_D="/var/lib/kubeguard/" + +INET_IF="{{ ansible_default_ipv4.interface }}" + +POD_NET_CIDR="{{ kubernetes.pod_ip_range }}" + +{% set br_net = kubernetes.pod_ip_range | ipsubnet(kubernetes.pod_ip_range_size, kubeguard.node_index[inventory_hostname]) -%} +BR_IF="kubeguard-br0" +BR_IP="{{ br_net | ipaddr(1) | ipaddr('address') }}" +BR_IP_CIDR="{{ br_net | ipaddr(1) }}" +BR_NET_CIDR="{{ br_net }}" + +TUN_IF="kubeguard-wg0" +TUN_IP_CIDR="{{ kubernetes.pod_ip_range | ipsubnet(kubernetes.pod_ip_range_size, 0) | ipaddr(kubeguard.node_index[inventory_hostname]) }}" + + +case "$1" in + up) + # bring up bridge for local pods + ip link add dev "$BR_IF" type bridge + ip addr add dev "$BR_IF" "$BR_IP_CIDR" + ip link set up dev "$BR_IF" + iptables -t nat -A POSTROUTING -s "$BR_NET_CIDR" -o "$INET_IF" -j MASQUERADE + modprobe br_netfilter + + # bring up wireguard tunnel to other nodes + ip link add dev "$TUN_IF" type wireguard + ip addr add dev "$TUN_IF" "$TUN_IP_CIDR" + wg set "$TUN_IF" listen-port {{ kubeguard_wireguard_port | default(51820) }} private-key "$CONF_D/$TUN_IF.privatekey" + ip link set up dev "$TUN_IF" + + # make pods and service IPs reachable + # !!! use IP of bridge as source so we don't produce martians if direct-zones are involved!!! + ip route add "$POD_NET_CIDR" dev "$TUN_IF" src "$BR_IP" + ;; + down) + # bring down wireguard tunnel to other nodes + ip route del "$POD_NET_CIDR" dev "$TUN_IF" + ip link del dev "$TUN_IF" + + # bring down bridge for local pods + iptables -t nat -D POSTROUTING -s "$BR_NET_CIDR" -o "$INET_IF" -j MASQUERADE + ip link del dev "$BR_IF" + ;; + *) + echo "usage: $0 (up|down)" + exit 1 + ;; +esac + +exit 0 diff --git a/roles/kubernetes/kubeadm/base/templates/net_kubeguard/interface.service.j2 b/roles/kubernetes/kubeadm/base/templates/net_kubeguard/interface.service.j2 new file mode 100644 index 00000000..35fc8f90 --- /dev/null +++ b/roles/kubernetes/kubeadm/base/templates/net_kubeguard/interface.service.j2 @@ -0,0 +1,12 @@ +[Unit] +Description=Kubeguard Network Setup +After=network.target + +[Service] +Type=oneshot +ExecStart=/var/lib/kubeguard/ifupdown.sh up +ExecStop=/var/lib/kubeguard/ifupdown.sh down +RemainAfterExit=yes + +[Install] +WantedBy=multi-user.target 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 diff --git a/roles/kubernetes/kubeadm/master/tasks/net_kube-router.yml b/roles/kubernetes/kubeadm/master/tasks/net_kube-router.yml new file mode 100644 index 00000000..5368b6f5 --- /dev/null +++ b/roles/kubernetes/kubeadm/master/tasks/net_kube-router.yml @@ -0,0 +1,10 @@ +--- +- name: generate kube-router configuration + template: + src: "net_kube-router/config.{{ kubernetes_network_plugin_version }}.yml.j2" + dest: /etc/kubernetes/network-plugin.yml + +- name: install kube-router on to the cluster + command: kubectl --kubeconfig /etc/kubernetes/admin.conf apply -f /etc/kubernetes/network-plugin.yml + register: kube_router_apply_result + changed_when: (kube_router_apply_result.stdout_lines | reject("regex", " unchanged$") | list | length) > 0 diff --git a/roles/kubernetes/kubeadm/master/tasks/net_kubeguard.yml b/roles/kubernetes/kubeadm/master/tasks/net_kubeguard.yml new file mode 100644 index 00000000..f364fb5f --- /dev/null +++ b/roles/kubernetes/kubeadm/master/tasks/net_kubeguard.yml @@ -0,0 +1,13 @@ +--- +- name: install kube-router variant + when: "kubernetes_network_plugin_variant == 'with-kube-router'" + block: + - name: generate kubeguard (kube-router) configuration + template: + src: "net_kubeguard/kube-router.{{ kubernetes_network_plugin_version }}.yml.j2" + dest: /etc/kubernetes/network-plugin.yml + + - name: install kubeguard (kube-router) on to the cluster + command: kubectl --kubeconfig /etc/kubernetes/admin.conf apply -f /etc/kubernetes/network-plugin.yml + register: kubeguard_apply_result + changed_when: (kubeguard_apply_result.stdout_lines | reject("regex", " unchanged$") | list | length) > 0 diff --git a/roles/kubernetes/kubeadm/master/tasks/net_none.yml b/roles/kubernetes/kubeadm/master/tasks/net_none.yml new file mode 100644 index 00000000..bf1a16d5 --- /dev/null +++ b/roles/kubernetes/kubeadm/master/tasks/net_none.yml @@ -0,0 +1,2 @@ +--- +## this "plugin" is for testing purposes only diff --git a/roles/kubernetes/kubeadm/master/tasks/primary-master.yml b/roles/kubernetes/kubeadm/master/tasks/primary-master.yml index f24e9ac1..432f7479 100644 --- a/roles/kubernetes/kubeadm/master/tasks/primary-master.yml +++ b/roles/kubernetes/kubeadm/master/tasks/primary-master.yml @@ -27,8 +27,8 @@ - name: initialize kubernetes master and store log block: - name: initialize kubernetes master - command: "kubeadm init --config /etc/kubernetes/kubeadm.config --node-name {{ inventory_hostname }}{% if kubernetes_cri_socket %} --cri-socket {{ kubernetes_cri_socket }}{% endif %}{% if kubernetes_network_plugin == 'kube-router' %} --skip-phases addon/kube-proxy{% endif %} --skip-token-print" - # command: "kubeadm init --config /etc/kubernetes/kubeadm.config{% if kubernetes_cri_socket %} --cri-socket {{ kubernetes_cri_socket }}{% endif %}{% if kubernetes_network_plugin == 'kube-router' %} --skip-phases addon/kube-proxy{% endif %} --token '{{ kubeadm_token_generate.stdout }}' --token-ttl 42m --skip-token-print" + command: "kubeadm init --config /etc/kubernetes/kubeadm.config --node-name {{ inventory_hostname }}{% if kubernetes_cri_socket %} --cri-socket {{ kubernetes_cri_socket }}{% endif %}{% if kubernetes_network_plugin_replaces_kube_proxy %} --skip-phases addon/kube-proxy{% endif %} --skip-token-print" + # command: "kubeadm init --config /etc/kubernetes/kubeadm.config{% if kubernetes_cri_socket %} --cri-socket {{ kubernetes_cri_socket }}{% endif %}{% if kubernetes_network_plugin_replaces_kube_proxy %} --skip-phases addon/kube-proxy{% endif %} --token '{{ kubeadm_token_generate.stdout }}' --token-ttl 42m --skip-token-print" args: creates: /etc/kubernetes/pki/ca.crt register: kubeadm_init @@ -40,6 +40,12 @@ content: "{{ kubeadm_init.stdout }}\n" dest: /etc/kubernetes/kubeadm-init.log + - name: dump error output of kubeadm init to log file + when: kubeadm_init.changed and kubeadm_init.stderr + copy: + content: "{{ kubeadm_init.stderr }}\n" + dest: /etc/kubernetes/kubeadm-init.errors + - name: create bootstrap token for existing cluster command: kubeadm token create --ttl 42m check_mode: no @@ -119,5 +125,5 @@ ## Network Plugin -# - name: install network plugin -# include_tasks: "net_{{ kubernetes_network_plugin }}.yml" +- name: install network plugin + include_tasks: "net_{{ kubernetes_network_plugin }}.yml" diff --git a/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml b/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml index 31fb31d6..610a8d3f 100644 --- a/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml +++ b/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml @@ -28,7 +28,7 @@ - name: join kubernetes secondary master node and store log block: - name: join kubernetes secondary master node - throttle: 1 ## TODO test this! + throttle: 1 command: "kubeadm join 127.0.0.1:6443 --node-name {{ inventory_hostname }} --apiserver-bind-port 6442{% if kubernetes_overlay_node_ip is defined %} --apiserver-advertise-address {{ kubernetes_overlay_node_ip }}{% endif %}{% if kubernetes_cri_socket %} --cri-socket {{ kubernetes_cri_socket }}{% endif %} --token '{{ kube_bootstrap_token }}' --discovery-token-ca-cert-hash '{{ kube_bootstrap_ca_cert_hash }}' --control-plane --certificate-key {{ kubeadm_upload_certs_key }}" args: creates: /etc/kubernetes/kubelet.conf @@ -42,6 +42,12 @@ content: "{{ kubeadm_join.stdout }}\n" dest: /etc/kubernetes/kubeadm-join.log + - name: dump error output of kubeadm join to log file + when: kubeadm_join.changed and kubeadm_join.stderr + copy: + content: "{{ kubeadm_join.stderr }}\n" + dest: /etc/kubernetes/kubeadm-join.errors + # TODO: acutally check if node has registered - name: give the new master(s) a moment to register when: kubeadm_join is changed diff --git a/roles/kubernetes/kubeadm/master/templates/net_kube-router/config.0.4.0.yml.j2 b/roles/kubernetes/kubeadm/master/templates/net_kube-router/config.0.4.0.yml.j2 new file mode 100644 index 00000000..b06687d5 --- /dev/null +++ b/roles/kubernetes/kubeadm/master/templates/net_kube-router/config.0.4.0.yml.j2 @@ -0,0 +1,237 @@ +apiVersion: v1 +kind: ConfigMap +metadata: + name: kube-router-kubeconfig + namespace: kube-system + labels: + tier: node + k8s-app: kube-router +data: + kubeconfig.conf: | + apiVersion: v1 + kind: Config + clusters: + - cluster: + certificate-authority: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt + server: https://127.0.0.1:{{ kubernetes_api_lb_port | default('6443') }} + name: default + contexts: + - context: + cluster: default + namespace: default + user: default + name: default + current-context: default + users: + - name: default + user: + tokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token +--- +apiVersion: v1 +kind: ConfigMap +metadata: + name: kube-router-cfg + namespace: kube-system + labels: + tier: node + k8s-app: kube-router +data: + cni-conf.json: | + { + "cniVersion":"0.3.0", + "name":"mynet", + "plugins":[ + { + "name":"kubernetes", + "type":"bridge", + "bridge":"kube-bridge", + "isDefaultGateway":true, + "hairpinMode": true, + "ipam":{ + "type":"host-local" + } + }, + { + "type":"portmap", + "capabilities":{ + "snat":true, + "portMappings":true + } + } + ] + } +--- +apiVersion: apps/v1 +kind: DaemonSet +metadata: + labels: + k8s-app: kube-router + tier: node + name: kube-router + namespace: kube-system +spec: + selector: + matchLabels: + k8s-app: kube-router + tier: node + template: + metadata: + labels: + k8s-app: kube-router + tier: node + annotations: + prometheus.io/scrape: "true" + prometheus.io/port: "8080" + spec: + priorityClassName: system-node-critical + serviceAccountName: kube-router + serviceAccount: kube-router + containers: + - name: kube-router + image: docker.io/cloudnativelabs/kube-router:v{{ kubernetes_network_plugin_version }} + imagePullPolicy: Always + args: + - --run-router=true + - --run-firewall=true + - --run-service-proxy={{ kubernetes_network_plugin_replaces_kube_proxy | string | lower }} + - --kubeconfig=/var/lib/kube-router/kubeconfig + - --hairpin-mode + - --iptables-sync-period=10s + - --ipvs-sync-period=10s + - --routes-sync-period=10s + env: + - name: NODE_NAME + valueFrom: + fieldRef: + fieldPath: spec.nodeName + - name: KUBE_ROUTER_CNI_CONF_FILE + value: /etc/cni/net.d/10-kuberouter.conflist + livenessProbe: + httpGet: + path: /healthz + port: 20244 + initialDelaySeconds: 10 + periodSeconds: 3 + resources: + requests: + cpu: 250m + memory: 250Mi + securityContext: + privileged: true + volumeMounts: + - name: lib-modules + mountPath: /lib/modules + readOnly: true + - name: cni-conf-dir + mountPath: /etc/cni/net.d + - name: kubeconfig + mountPath: /var/lib/kube-router + readOnly: true + - name: xtables-lock + mountPath: /run/xtables.lock + readOnly: false + initContainers: + - name: install-cni + image: busybox + imagePullPolicy: Always + command: + - /bin/sh + - -c + - set -e -x; + if [ ! -f /etc/cni/net.d/10-kuberouter.conflist ]; then + if [ -f /etc/cni/net.d/*.conf ]; then + rm -f /etc/cni/net.d/*.conf; + fi; + TMP=/etc/cni/net.d/.tmp-kuberouter-cfg; + cp /etc/kube-router/cni-conf.json ${TMP}; + mv ${TMP} /etc/cni/net.d/10-kuberouter.conflist; + fi + volumeMounts: + - name: cni-conf-dir + mountPath: /etc/cni/net.d + - name: kube-router-cfg + mountPath: /etc/kube-router + hostNetwork: true + tolerations: + - key: CriticalAddonsOnly + operator: Exists + - effect: NoSchedule + key: node-role.kubernetes.io/master + operator: Exists + - effect: NoSchedule + key: node.kubernetes.io/not-ready + operator: Exists + volumes: + - name: lib-modules + hostPath: + path: /lib/modules + - name: cni-conf-dir + hostPath: + path: /etc/cni/net.d + - name: kube-router-cfg + configMap: + name: kube-router-cfg + - name: kubeconfig + configMap: + name: kube-router-kubeconfig + items: + - key: kubeconfig.conf + path: kubeconfig + - name: xtables-lock + hostPath: + path: /run/xtables.lock + type: FileOrCreate +--- +apiVersion: v1 +kind: ServiceAccount +metadata: + name: kube-router + namespace: kube-system +--- +kind: ClusterRole +apiVersion: rbac.authorization.k8s.io/v1beta1 +metadata: + name: kube-router + namespace: kube-system +rules: + - apiGroups: + - "" + resources: + - namespaces + - pods + - services + - nodes + - endpoints + verbs: + - list + - get + - watch + - apiGroups: + - "networking.k8s.io" + resources: + - networkpolicies + verbs: + - list + - get + - watch + - apiGroups: + - extensions + resources: + - networkpolicies + verbs: + - get + - list + - watch +--- +kind: ClusterRoleBinding +apiVersion: rbac.authorization.k8s.io/v1beta1 +metadata: + name: kube-router +roleRef: + apiGroup: rbac.authorization.k8s.io + kind: ClusterRole + name: kube-router +subjects: +- kind: ServiceAccount + name: kube-router + namespace: kube-system diff --git a/roles/kubernetes/kubeadm/master/templates/net_kubeguard/kube-router.0.4.0.yml.j2 b/roles/kubernetes/kubeadm/master/templates/net_kubeguard/kube-router.0.4.0.yml.j2 new file mode 100644 index 00000000..51bfdaae --- /dev/null +++ b/roles/kubernetes/kubeadm/master/templates/net_kubeguard/kube-router.0.4.0.yml.j2 @@ -0,0 +1,171 @@ +apiVersion: v1 +kind: ConfigMap +metadata: + name: kube-router-kubeconfig + namespace: kube-system + labels: + tier: node + k8s-app: kube-router +data: + kubeconfig.conf: | + apiVersion: v1 + kind: Config + clusters: + - cluster: + certificate-authority: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt + server: https://127.0.0.1:{{ kubernetes_api_lb_port | default('6443') }} + name: default + contexts: + - context: + cluster: default + namespace: default + user: default + name: default + current-context: default + users: + - name: default + user: + tokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token +--- +apiVersion: apps/v1 +kind: DaemonSet +metadata: + labels: + k8s-app: kube-router + tier: node + name: kube-router + namespace: kube-system +spec: + selector: + matchLabels: + k8s-app: kube-router + tier: node + template: + metadata: + labels: + k8s-app: kube-router + tier: node + annotations: + prometheus.io/scrape: "true" + prometheus.io/port: "8080" + spec: + priorityClassName: system-node-critical + serviceAccountName: kube-router + serviceAccount: kube-router + containers: + - name: kube-router + image: docker.io/cloudnativelabs/kube-router:v{{ kubernetes_network_plugin_version }} + imagePullPolicy: Always + args: + - --run-router=false + - --run-firewall=true + - --run-service-proxy={{ kubernetes_network_plugin_replaces_kube_proxy | string | lower }} + - --kubeconfig=/var/lib/kube-router/kubeconfig + - --hairpin-mode + - --iptables-sync-period=10s + - --ipvs-sync-period=10s + env: + - name: NODE_NAME + valueFrom: + fieldRef: + fieldPath: spec.nodeName + livenessProbe: + httpGet: + path: /healthz + port: 20244 + initialDelaySeconds: 10 + periodSeconds: 3 + resources: + requests: + cpu: 250m + memory: 250Mi + securityContext: + privileged: true + volumeMounts: + - name: lib-modules + mountPath: /lib/modules + readOnly: true + - name: kubeconfig + mountPath: /var/lib/kube-router + readOnly: true + - name: xtables-lock + mountPath: /run/xtables.lock + readOnly: false + hostNetwork: true + tolerations: + - key: CriticalAddonsOnly + operator: Exists + - effect: NoSchedule + key: node-role.kubernetes.io/master + operator: Exists + - effect: NoSchedule + key: node.kubernetes.io/not-ready + operator: Exists + volumes: + - name: lib-modules + hostPath: + path: /lib/modules + - name: kubeconfig + configMap: + name: kube-router-kubeconfig + items: + - key: kubeconfig.conf + path: kubeconfig + - name: xtables-lock + hostPath: + path: /run/xtables.lock + type: FileOrCreate +--- +apiVersion: v1 +kind: ServiceAccount +metadata: + name: kube-router + namespace: kube-system +--- +kind: ClusterRole +apiVersion: rbac.authorization.k8s.io/v1beta1 +metadata: + name: kube-router + namespace: kube-system +rules: + - apiGroups: + - "" + resources: + - namespaces + - pods + - services + - nodes + - endpoints + verbs: + - list + - get + - watch + - apiGroups: + - "networking.k8s.io" + resources: + - networkpolicies + verbs: + - list + - get + - watch + - apiGroups: + - extensions + resources: + - networkpolicies + verbs: + - get + - list + - watch +--- +kind: ClusterRoleBinding +apiVersion: rbac.authorization.k8s.io/v1beta1 +metadata: + name: kube-router +roleRef: + apiGroup: rbac.authorization.k8s.io + kind: ClusterRole + name: kube-router +subjects: +- kind: ServiceAccount + name: kube-router + namespace: kube-system diff --git a/roles/kubernetes/kubeadm/node/tasks/main.yml b/roles/kubernetes/kubeadm/node/tasks/main.yml index 655b1b18..6b3d18ae 100644 --- a/roles/kubernetes/kubeadm/node/tasks/main.yml +++ b/roles/kubernetes/kubeadm/node/tasks/main.yml @@ -14,3 +14,9 @@ copy: # noqa 503 content: "{{ kubeadm_join.stdout }}\n" dest: /etc/kubernetes/kubeadm-join.log + + - name: dump error output of kubeadm join to log file + when: kubeadm_join.changed and kubeadm_join.stderr + copy: + content: "{{ kubeadm_join.stderr }}\n" + dest: /etc/kubernetes/kubeadm-join.errors diff --git a/roles/kubernetes/kubeadm/prune/tasks/main.yml b/roles/kubernetes/kubeadm/prune/tasks/main.yml new file mode 100644 index 00000000..71ed0d04 --- /dev/null +++ b/roles/kubernetes/kubeadm/prune/tasks/main.yml @@ -0,0 +1,9 @@ +--- +- name: remove nodes from api server + run_once: true + delegate_to: "{{ groups['_kubernetes_primary_master_'] | first }}" + loop: "{{ groups['_kubernetes_nodes_prune_'] | default([]) }}" + command: "kubectl delete node {{ item }}" + +- name: prune network plugin + include_tasks: "net_{{ kubernetes_network_plugin }}.yml" diff --git a/roles/kubernetes/kubeadm/prune/tasks/net_kube-router.yml b/roles/kubernetes/kubeadm/prune/tasks/net_kube-router.yml new file mode 100644 index 00000000..94832c38 --- /dev/null +++ b/roles/kubernetes/kubeadm/prune/tasks/net_kube-router.yml @@ -0,0 +1,2 @@ +--- +## nothing to do here diff --git a/roles/kubernetes/kubeadm/prune/tasks/net_kubeguard.yml b/roles/kubernetes/kubeadm/prune/tasks/net_kubeguard.yml new file mode 100644 index 00000000..8a8c7752 --- /dev/null +++ b/roles/kubernetes/kubeadm/prune/tasks/net_kubeguard.yml @@ -0,0 +1,14 @@ +--- +- name: stop/disable systemd units for stale kubeguard peers + loop: "{{ groups['_kubernetes_nodes_prune_'] | default([]) }}" + systemd: + name: "kubeguard-peer-{{ item }}.service" + state: stopped + enabled: no + failed_when: false + +- name: remove systemd units for stale kubeguard peers + loop: "{{ groups['_kubernetes_nodes_prune_'] | default([]) }}" + file: + name: "/etc/systemd/system/kubeguard-peer-{{ item }}.service" + state: absent diff --git a/roles/kubernetes/kubeadm/prune/tasks/net_none.yml b/roles/kubernetes/kubeadm/prune/tasks/net_none.yml new file mode 100644 index 00000000..94832c38 --- /dev/null +++ b/roles/kubernetes/kubeadm/prune/tasks/net_none.yml @@ -0,0 +1,2 @@ +--- +## nothing to do here diff --git a/roles/kubernetes/kubeadm/reset/handlers/main.yml b/roles/kubernetes/kubeadm/reset/handlers/main.yml new file mode 100644 index 00000000..bb7fde2b --- /dev/null +++ b/roles/kubernetes/kubeadm/reset/handlers/main.yml @@ -0,0 +1,4 @@ +--- +- name: reload systemd + systemd: + daemon_reload: yes diff --git a/roles/kubernetes/kubeadm/reset/tasks/main.yml b/roles/kubernetes/kubeadm/reset/tasks/main.yml index c35e2bfc..8a21fbd5 100644 --- a/roles/kubernetes/kubeadm/reset/tasks/main.yml +++ b/roles/kubernetes/kubeadm/reset/tasks/main.yml @@ -6,9 +6,15 @@ loop: - /etc/kubernetes/kubeadm.config - /etc/kubernetes/kubeadm-init.log + - /etc/kubernetes/kubeadm-init.errors - /etc/kubernetes/kubeadm-join.log + - /etc/kubernetes/kubeadm-join.errors - /etc/kubernetes/pki - /etc/kubernetes/encryption + - /etc/kubernetes/network-plugin.yml + - /etc/kubernetes/node-local-dns.yml + - /etc/kubernetes/addons + - /etc/default/kubelet file: path: "{{ item }}" state: absent @@ -25,3 +31,6 @@ file: path: "{{ item.path }}" state: absent + +- name: extra-cleanup for kubeguard network plugin + import_tasks: net_kubeguard.yml diff --git a/roles/kubernetes/kubeadm/reset/tasks/net_kubeguard.yml b/roles/kubernetes/kubeadm/reset/tasks/net_kubeguard.yml new file mode 100644 index 00000000..bcb48960 --- /dev/null +++ b/roles/kubernetes/kubeadm/reset/tasks/net_kubeguard.yml @@ -0,0 +1,26 @@ +--- +- name: check if kubeguard interface service unit exists + stat: + path: /etc/systemd/system/kubeguard-interface.service + register: kubeguard_interface_unit + +- name: bring down kubeguard interface + when: kubeguard_interface_unit.stat.exists + systemd: + name: kubeguard-interface.service + state: stopped + +- name: gather list of all kubeguard related service units + find: + path: /etc/systemd/system/ + patterns: + - "kubeguard-peer-*.service" + - kubeguard-interface.service + register: kubeguard_units_installed + +- name: remove all kubeguard related files and directories + loop: "{{ kubeguard_units_installed.files | map(attribute='path') | list | flatten | union(['/var/lib/kubeguard']) }}" + file: + path: "{{ item }}" + state: absent + notify: reload systemd |