From ddc8db7956cbf68afb1bb49401827e9b55ab139f Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Sat, 11 Jan 2020 03:35:03 +0100
Subject: kubernetes: new/updated kubeadm master role (WIP)

---
 .../kubeadm/master/tasks/secondary-masters.yml     | 45 ++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml

(limited to 'roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml')

diff --git a/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml b/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml
new file mode 100644
index 00000000..f7e25fb4
--- /dev/null
+++ b/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml
@@ -0,0 +1,45 @@
+---
+- name: fetch secrets needed for secondary master
+  run_once: true
+  delegate_to: "{{ groups['_kubernetes_primary_master_'] | first }}"
+  block:
+
+  - name: fetch list of current nodes
+    command: kubectl --kubeconfig /etc/kubernetes/admin.conf get nodes -o name
+    changed_when: False
+    check_mode: no
+    register: kubectl_node_list
+
+  - name: save list of current nodes
+    set_fact:
+      kubernetes_current_nodes: "{{ kubectl_node_list.stdout_lines | map('replace', 'node/', '') | list }}"
+
+  - name: upload certs
+    when: "groups['_kubernetes_masters_'] | map('extract', hostvars) | map(attribute='host_name') | difference(kubernetes_current_nodes) | length > 0"
+    command: kubeadm init phase upload-certs --experimental-upload-certs
+    check_mode: no
+    register: kubeadm_upload_certs
+
+
+- name: extracting encryption key for certs
+  set_fact:
+    kubeadm_upload_certs_key: "{% if kubeadm_upload_certs.stdout is defined %}{{ kubeadm_upload_certs.stdout_lines | last }}{% endif %}"
+
+- name: join kubernetes secondary master node
+  command: "kubeadm join 127.0.0.1:{{ kubernetes_api_lb_port | default('6443') }} --apiserver-bind-port 6442{% if kubernetes_cri_socket is defined %} --cri-socket {{ kubernetes_cri_socket }}{% endif %} --token '{{ kube_bootstrap_token }}' --discovery-token-ca-cert-hash '{{ kube_bootstrap_ca_cert_hash }}' --experimental-control-plane --certificate-key {{ kubeadm_upload_certs_key }}"
+  args:
+    creates: /etc/kubernetes/kubelet.conf
+  register: kubeadm_join
+
+- name: dump output of kubeadm join to log file
+  when: kubeadm_join is changed
+  # This is not a handler by design to make sure this action runs at this point of the play.
+  copy: # noqa 503
+    content: "{{ kubeadm_join.stdout }}\n"
+    dest: /etc/kubernetes/kubeadm-join.log
+
+  # TODO: acutally check if node has registered
+- name: give the new master(s) a moment to register
+  when: kubeadm_join is changed
+  pause: # noqa 503
+    seconds: 5
-- 
cgit v1.2.3


From 7dbf0cae4e1a8d77e79b8aafd5bb08780977481f Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Sat, 11 Jan 2020 04:38:08 +0100
Subject: kubernetes: kubeadm/master node some more cleanup (WIP)

---
 common/kubernetes.yml                              |  8 ++--
 inventory/group_vars/k8s-test/main.yml             |  5 ++-
 roles/kubernetes/kubeadm/master/tasks/main.yml     | 22 +++++-----
 .../kubeadm/master/tasks/secondary-masters.yml     |  4 +-
 .../kubeadm/master/templates/encryption-config.j2  |  2 +-
 .../master/templates/kubeadm-cluster.config.j2     | 47 ----------------------
 .../kubeadm/master/templates/kubeadm.config.j2     | 41 +++++++++++++++++++
 roles/kubernetes/kubeadm/node/tasks/main.yml       | 13 ++----
 spreadspace/group_vars/k8s-test.yml                | 10 +++++
 9 files changed, 77 insertions(+), 75 deletions(-)
 delete mode 100644 roles/kubernetes/kubeadm/master/templates/kubeadm-cluster.config.j2
 create mode 100644 roles/kubernetes/kubeadm/master/templates/kubeadm.config.j2
 create mode 100644 spreadspace/group_vars/k8s-test.yml

(limited to 'roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml')

diff --git a/common/kubernetes.yml b/common/kubernetes.yml
index 4a9cf65a..d1b4592a 100644
--- a/common/kubernetes.yml
+++ b/common/kubernetes.yml
@@ -82,10 +82,10 @@
   - role: kubernetes/base
   - role: kubernetes/kubeadm/base
 
-# - name: configure kubernetes primary master
-#   hosts: _kubernetes_primary_master_
-#   roles:
-#   - role: kubernetes/kubeadm/master
+- name: configure kubernetes primary master
+  hosts: _kubernetes_primary_master_
+  roles:
+  - role: kubernetes/kubeadm/master
 
 # - name: configure kubernetes secondary masters
 #   hosts: _kubernetes_masters_:!_kubernetes_primary_master_
diff --git a/inventory/group_vars/k8s-test/main.yml b/inventory/group_vars/k8s-test/main.yml
index 979cc1a3..91b7b0c2 100644
--- a/inventory/group_vars/k8s-test/main.yml
+++ b/inventory/group_vars/k8s-test/main.yml
@@ -7,7 +7,6 @@ kubernetes:
   cluster_name: k8s-test
 
   dedicated_master: False
-  api_advertise_ip: 89.106.215.23
   api_extra_sans:
   - k8s-test.spreadspace.org
 
@@ -16,6 +15,10 @@ kubernetes:
   service_ip_range: 172.18.192.0/18
 
 
+# kubernetes_secrets:
+#   encryption_config_keys: "{{ vault_kubernetes_encryption_config_keys }}"
+
+
 kubeguard:
   kube_router_version: 0.4.0-rc1
 
diff --git a/roles/kubernetes/kubeadm/master/tasks/main.yml b/roles/kubernetes/kubeadm/master/tasks/main.yml
index 9ffdbeee..7f96ff6a 100644
--- a/roles/kubernetes/kubeadm/master/tasks/main.yml
+++ b/roles/kubernetes/kubeadm/master/tasks/main.yml
@@ -1,15 +1,15 @@
 ---
-- name: create direcotry for encryption config
-  file:
-    name: /etc/kubernetes/encryption
-    state: directory
-    mode: 0700
-
-- name: install encryption config
-  template:
-    src: encryption-config.j2
-    dest: /etc/kubernetes/encryption/config
-    mode: 0600
+# - name: create direcotry for encryption config
+#   file:
+#     name: /etc/kubernetes/encryption
+#     state: directory
+#     mode: 0700
+
+# - name: install encryption config
+#   template:
+#     src: encryption-config.j2
+#     dest: /etc/kubernetes/encryption/config
+#     mode: 0600
 
 
 - name: install primary master
diff --git a/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml b/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml
index f7e25fb4..fc85a37d 100644
--- a/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml
+++ b/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml
@@ -16,7 +16,7 @@
 
   - name: upload certs
     when: "groups['_kubernetes_masters_'] | map('extract', hostvars) | map(attribute='host_name') | difference(kubernetes_current_nodes) | length > 0"
-    command: kubeadm init phase upload-certs --experimental-upload-certs
+    command: kubeadm init phase upload-certs --upload-certs
     check_mode: no
     register: kubeadm_upload_certs
 
@@ -26,7 +26,7 @@
     kubeadm_upload_certs_key: "{% if kubeadm_upload_certs.stdout is defined %}{{ kubeadm_upload_certs.stdout_lines | last }}{% endif %}"
 
 - name: join kubernetes secondary master node
-  command: "kubeadm join 127.0.0.1:{{ kubernetes_api_lb_port | default('6443') }} --apiserver-bind-port 6442{% if kubernetes_cri_socket is defined %} --cri-socket {{ kubernetes_cri_socket }}{% endif %} --token '{{ kube_bootstrap_token }}' --discovery-token-ca-cert-hash '{{ kube_bootstrap_ca_cert_hash }}' --experimental-control-plane --certificate-key {{ kubeadm_upload_certs_key }}"
+  command: "kubeadm join {{ host_vars[groups['_kubernetes_primary_master_']].kubernetes_kubelet_node_ip }}:6443{% if kubernetes_cri_socket is defined %} --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
   register: kubeadm_join
diff --git a/roles/kubernetes/kubeadm/master/templates/encryption-config.j2 b/roles/kubernetes/kubeadm/master/templates/encryption-config.j2
index a69ae84b..345c9bf9 100644
--- a/roles/kubernetes/kubeadm/master/templates/encryption-config.j2
+++ b/roles/kubernetes/kubeadm/master/templates/encryption-config.j2
@@ -6,7 +6,7 @@ resources:
     providers:
     - secretbox:
         keys:
-{% for key in kubernetes.encryption_config_keys %}
+{% for key in kubernetes_secrets.encryption_config_keys %}
         - name: key{{ loop.index }}
           secret: {{ key }}
 {% endfor %}
diff --git a/roles/kubernetes/kubeadm/master/templates/kubeadm-cluster.config.j2 b/roles/kubernetes/kubeadm/master/templates/kubeadm-cluster.config.j2
deleted file mode 100644
index 78e9d7a7..00000000
--- a/roles/kubernetes/kubeadm/master/templates/kubeadm-cluster.config.j2
+++ /dev/null
@@ -1,47 +0,0 @@
-{# https://godoc.org/k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta1 #}
-{#  #}
-apiVersion: kubeadm.k8s.io/v1beta1
-kind: InitConfiguration
-{# TODO: this is ugly but we want to create our own token so we can #}
-{# better control it's lifetime #}
-bootstrapTokens:
-- ttl: "1s"
----
-apiVersion: kubeadm.k8s.io/v1beta1
-kind: ClusterConfiguration
-kubernetesVersion: {{ kubernetes_version }}
-clusterName: {{ kubernetes.cluster_name }}
-imageRepository: k8s.gcr.io
-{% if kubernetes.api_advertise_ip %}
-controlPlaneEndpoint: "{{ kubernetes.api_advertise_ip }}:6443"
-{% endif %}
-networking:
-  dnsDomain: cluster.local
-  podSubnet: {{ kubernetes.pod_ip_range }}
-  serviceSubnet: {{ kubernetes.service_ip_range }}
-apiServer:
-  extraArgs:
-{% if kubernetes.api_advertise_ip %}
-    advertise-address: {{ kubernetes.api_advertise_ip }}
-{% endif %}
-    encryption-provider-config: /etc/kubernetes/encryption/config
-  extraVolumes:
-  - name: encryption-config
-    hostPath: /etc/kubernetes/encryption
-    mountPath: /etc/kubernetes/encryption
-    readOnly: true
-    pathType: Directory
-{% if (kubernetes.api_extra_sans | length) == 0 %}
-  certSANs: []
-{% else %}
-  certSANs:
-{%   for san in kubernetes.api_extra_sans %}
-  - {{ san }}
-{%   endfor %}
-{% endif %}
-controllerManager:
-  extraArgs:
-    node-cidr-mask-size: "{{ kubernetes_network_node_cidr_size }}"
-scheduler: {}
-dns:
-  type: CoreDNS
diff --git a/roles/kubernetes/kubeadm/master/templates/kubeadm.config.j2 b/roles/kubernetes/kubeadm/master/templates/kubeadm.config.j2
new file mode 100644
index 00000000..e03ea6f6
--- /dev/null
+++ b/roles/kubernetes/kubeadm/master/templates/kubeadm.config.j2
@@ -0,0 +1,41 @@
+{# https://godoc.org/k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta1 #}
+{#  #}
+apiVersion: kubeadm.k8s.io/v1beta1
+kind: InitConfiguration
+{# TODO: this is ugly but we want to create our own token so we can #}
+{# better control it's lifetime #}
+bootstrapTokens:
+- ttl: "1s"
+---
+apiVersion: kubeadm.k8s.io/v1beta1
+kind: ClusterConfiguration
+kubernetesVersion: {{ kubernetes_version }}
+clusterName: {{ kubernetes.cluster_name }}
+imageRepository: k8s.gcr.io
+controlPlaneEndpoint: "{{ kubernetes_kubelet_node_ip }}:6443"
+networking:
+  dnsDomain: {{ kubernetes.dns_domain | default('cluster.local') }}
+  podSubnet: {{ kubernetes.pod_ip_range }}
+  serviceSubnet: {{ kubernetes.service_ip_range }}
+apiServer:
+  extraArgs:
+    advertise-address: {{ kubernetes_kubelet_node_ip }}
+  #   encryption-provider-config: /etc/kubernetes/encryption/config
+  # extraVolumes:
+  # - name: encryption-config
+  #   hostPath: /etc/kubernetes/encryption
+  #   mountPath: /etc/kubernetes/encryption
+  #   readOnly: true
+  #   pathType: Directory
+{% if (kubernetes.api_extra_sans | default([]) | length) == 0 %}
+  certSANs: []
+{% else %}
+  certSANs:
+  {{ kubernetes.api_extra_sans | to_nice_yaml | indent(width=2) }}
+{% endif %}
+controllerManager:
+  extraArgs:
+    node-cidr-mask-size: "{{ kubernetes.pod_ip_range_size }}"
+scheduler: {}
+dns:
+  type: CoreDNS
diff --git a/roles/kubernetes/kubeadm/node/tasks/main.yml b/roles/kubernetes/kubeadm/node/tasks/main.yml
index 9f0057f9..2a140099 100644
--- a/roles/kubernetes/kubeadm/node/tasks/main.yml
+++ b/roles/kubernetes/kubeadm/node/tasks/main.yml
@@ -1,18 +1,13 @@
 ---
-- name: get master vars
-  set_fact:
-    kube_bootstrap_token: "{{ hostvars[kubernetes_master].kube_bootstrap_token }}"
-    kube_bootstrap_ca_cert_hash: "{{ hostvars[kubernetes_master].kube_bootstrap_ca_cert_hash }}"
-    kube_master_addr: "{{ kubernetes.api_advertise_ip | default(hostvars[kubernetes_master].ansible_default_ipv4.address) }}"
-
 - name: join kubernetes node
-  command: "kubeadm join --token {{ kube_bootstrap_token }} {{ kube_master_addr }}:6443 --discovery-token-ca-cert-hash {{ kube_bootstrap_ca_cert_hash }}"
+  command: "kubeadm join {{ host_vars[groups['_kubernetes_primary_master_']].kubernetes_kubelet_node_ip }}:6443{% if kubernetes_cri_socket is defined %} --cri-socket {{ kubernetes_cri_socket }}{% endif %} --token '{{ kube_bootstrap_token }}' --discovery-token-ca-cert-hash '{{ kube_bootstrap_ca_cert_hash }}'"
   args:
     creates: /etc/kubernetes/kubelet.conf
   register: kubeadm_join
 
 - name: dump output of kubeadm join to log file
-  when: kubeadm_join.changed
-  copy:
+  when: kubeadm_join is changed
+  # This is not a handler by design to make sure this action runs at this point of the play.
+  copy: # noqa 503
     content: "{{ kubeadm_join.stdout }}\n"
     dest: /etc/kubernetes/kubeadm-join.log
diff --git a/spreadspace/group_vars/k8s-test.yml b/spreadspace/group_vars/k8s-test.yml
new file mode 100644
index 00000000..389020c4
--- /dev/null
+++ b/spreadspace/group_vars/k8s-test.yml
@@ -0,0 +1,10 @@
+$ANSIBLE_VAULT;1.2;AES256;spreadspace
+39376666393934306161383231356136393664373164653834393534623766323637666632313632
+3062623430363230333736643164393064346431346534650a393062613232663264383537396663
+39363838303361353766616264643139373062313437383332656162393536646262363561356264
+3333376139663332340a333036303333356333376630656632303464356261643731356336373337
+37303939363239613130363232646262353238333237633766613035643238356636323563636231
+66336562313963323536623732396534313131373338353136623461663033313534636561356131
+65373264636562336261316231656362333630656334373135633663666465376430303135383562
+33653663653132633834626165383832323235323563323334643830643934346466343762613433
+3463
-- 
cgit v1.2.3


From bb9a03e136bd8d1029bfb2c1cf0be22d28df1576 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Fri, 17 Jan 2020 19:53:12 +0100
Subject: kubernetes: node cleanup works now

---
 common/kubernetes-cleanup.yml                               |  7 ++-----
 common/kubernetes.yml                                       |  2 --
 roles/kubernetes/kubeadm/master/tasks/main.yml              |  6 +++---
 roles/kubernetes/kubeadm/master/tasks/primary-master.yml    |  4 ++--
 roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml |  4 ++--
 roles/kubernetes/kubeadm/node/tasks/main.yml                |  2 +-
 roles/kubernetes/kubeadm/reset/tasks/main.yml               | 10 ++++++++++
 spreadspace/k8s-test.yml                                    |  5 ++++-
 8 files changed, 24 insertions(+), 16 deletions(-)

(limited to 'roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml')

diff --git a/common/kubernetes-cleanup.yml b/common/kubernetes-cleanup.yml
index a320e0f8..be55d11e 100644
--- a/common/kubernetes-cleanup.yml
+++ b/common/kubernetes-cleanup.yml
@@ -1,7 +1,4 @@
 ---
-- import_playbook: kubernetes-cluster-layout.yml
-
-########
 - name: check for nodes to be removed
   hosts: _kubernetes_primary_master_
   tasks:
@@ -15,7 +12,7 @@
     loop: "{{ kubectl_node_list.stdout_lines | map('replace', 'node/', '') | list | difference(groups['_kubernetes_nodes_']) }}"
     add_host:
       name: "{{ item }}"
-      inventory_dir: "{{ inventory_dir }}"
+      inventory_dir: "{{ hostvars[item].inventory_dir }}"
       group: _kubernetes_nodes_remove_
     changed_when: False
 
@@ -28,7 +25,7 @@
   roles:
   - role: kubernetes/kubeadm/reset
   - role: kubernetes/net/kubeguard
-    when: kubernetes_network_plugin == 'kubeguard'
+    when: hostvars[groups['_kubernetes_primary_master_'][0]].kubernetes_network_plugin == 'kubeguard'
     vars:
       kubeguard_action: remove
 
diff --git a/common/kubernetes.yml b/common/kubernetes.yml
index aaf23219..4fc8cef2 100644
--- a/common/kubernetes.yml
+++ b/common/kubernetes.yml
@@ -1,6 +1,4 @@
 ---
-- import_playbook: kubernetes-cluster-layout.yml
-
 - name: prepare variables and do some sanity checks
   hosts: _kubernetes_nodes_
   gather_facts: no
diff --git a/roles/kubernetes/kubeadm/master/tasks/main.yml b/roles/kubernetes/kubeadm/master/tasks/main.yml
index 7f96ff6a..9af041b2 100644
--- a/roles/kubernetes/kubeadm/master/tasks/main.yml
+++ b/roles/kubernetes/kubeadm/master/tasks/main.yml
@@ -22,7 +22,7 @@
 
 
 - name: check if master is tainted (1/2)
-  command: "kubectl --kubeconfig /etc/kubernetes/admin.conf get node {{ host_name }} -o json"
+  command: "kubectl --kubeconfig /etc/kubernetes/admin.conf get node {{ inventory_hostname }} -o json"
   check_mode: no
   register: kubectl_get_node
   changed_when: False
@@ -33,11 +33,11 @@
 
 - name: remove taint from master node
   when: not kubernetes.dedicated_master and 'node-role.kubernetes.io/master' in kube_node_taints
-  command: "kubectl --kubeconfig /etc/kubernetes/admin.conf taint nodes {{ host_name }} node-role.kubernetes.io/master-"
+  command: "kubectl --kubeconfig /etc/kubernetes/admin.conf taint nodes {{ inventory_hostname }} node-role.kubernetes.io/master-"
 
 - name: add taint for master node
   when: kubernetes.dedicated_master and 'node-role.kubernetes.io/master' not in kube_node_taints
-  command: "kubectl --kubeconfig /etc/kubernetes/admin.conf taint nodes {{ host_name }} node-role.kubernetes.io/master='':NoSchedule"
+  command: "kubectl --kubeconfig /etc/kubernetes/admin.conf taint nodes {{ inventory_hostname }} node-role.kubernetes.io/master='':NoSchedule"
 
 
 - name: prepare kubectl (1/2)
diff --git a/roles/kubernetes/kubeadm/master/tasks/primary-master.yml b/roles/kubernetes/kubeadm/master/tasks/primary-master.yml
index 5efc91b5..e814e847 100644
--- a/roles/kubernetes/kubeadm/master/tasks/primary-master.yml
+++ b/roles/kubernetes/kubeadm/master/tasks/primary-master.yml
@@ -25,7 +25,7 @@
   #   register: kubeadm_token_generate
 
   - name: initialize kubernetes master
-    command: "kubeadm init --config /etc/kubernetes/kubeadm.config{% if kubernetes_cri_socket is defined %} --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 --node-name {{ inventory_hostname }}{% if kubernetes_cri_socket is defined %} --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 is defined %} --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"
     args:
       creates: /etc/kubernetes/pki/ca.crt
@@ -70,7 +70,7 @@
       kubernetes_current_nodes: "{{ kubectl_node_list.stdout_lines | map('replace', 'node/', '') | list }}"
 
   - name: create bootstrap token for existing cluster
-    when: "groups['_kubernetes_nodes_'] | map('extract', hostvars) | map(attribute='host_name') | difference(kubernetes_current_nodes) | length > 0"
+    when: "groups['_kubernetes_nodes_'] | difference(kubernetes_current_nodes) | length > 0"
     command: kubeadm token create --ttl 42m
     check_mode: no
     register: kubeadm_token_create
diff --git a/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml b/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml
index fc85a37d..7025ace0 100644
--- a/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml
+++ b/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml
@@ -15,7 +15,7 @@
       kubernetes_current_nodes: "{{ kubectl_node_list.stdout_lines | map('replace', 'node/', '') | list }}"
 
   - name: upload certs
-    when: "groups['_kubernetes_masters_'] | map('extract', hostvars) | map(attribute='host_name') | difference(kubernetes_current_nodes) | length > 0"
+    when: "groups['_kubernetes_masters_'] | difference(kubernetes_current_nodes) | length > 0"
     command: kubeadm init phase upload-certs --upload-certs
     check_mode: no
     register: kubeadm_upload_certs
@@ -26,7 +26,7 @@
     kubeadm_upload_certs_key: "{% if kubeadm_upload_certs.stdout is defined %}{{ kubeadm_upload_certs.stdout_lines | last }}{% endif %}"
 
 - name: join kubernetes secondary master node
-  command: "kubeadm join {{ host_vars[groups['_kubernetes_primary_master_']].kubernetes_kubelet_node_ip }}:6443{% if kubernetes_cri_socket is defined %} --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 }}"
+  command: "kubeadm join {{ host_vars[groups['_kubernetes_primary_master_']].kubernetes_kubelet_node_ip }}:6443 --node-name {{ inventory_hostname }}{% if kubernetes_cri_socket is defined %} --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
   register: kubeadm_join
diff --git a/roles/kubernetes/kubeadm/node/tasks/main.yml b/roles/kubernetes/kubeadm/node/tasks/main.yml
index dba2ce30..f7efdd81 100644
--- a/roles/kubernetes/kubeadm/node/tasks/main.yml
+++ b/roles/kubernetes/kubeadm/node/tasks/main.yml
@@ -1,6 +1,6 @@
 ---
 - name: join kubernetes node
-  command: "kubeadm join {{ hostvars[groups['_kubernetes_primary_master_'][0]].kubernetes_kubelet_node_ip }}:6443{% if kubernetes_cri_socket is defined %} --cri-socket {{ kubernetes_cri_socket }}{% endif %} --token '{{ kube_bootstrap_token }}' --discovery-token-ca-cert-hash '{{ kube_bootstrap_ca_cert_hash }}'"
+  command: "kubeadm join {{ hostvars[groups['_kubernetes_primary_master_'][0]].kubernetes_kubelet_node_ip }}:6443 --node-name {{ inventory_hostname }}{% if kubernetes_cri_socket is defined %} --cri-socket {{ kubernetes_cri_socket }}{% endif %} --token '{{ kube_bootstrap_token }}' --discovery-token-ca-cert-hash '{{ kube_bootstrap_ca_cert_hash }}'"
   args:
     creates: /etc/kubernetes/kubelet.conf
   register: kubeadm_join
diff --git a/roles/kubernetes/kubeadm/reset/tasks/main.yml b/roles/kubernetes/kubeadm/reset/tasks/main.yml
index a6d64c7d..f0e88e53 100644
--- a/roles/kubernetes/kubeadm/reset/tasks/main.yml
+++ b/roles/kubernetes/kubeadm/reset/tasks/main.yml
@@ -1,3 +1,13 @@
 ---
 - name: clean up settings and files created by kubeadm
   command: kubeadm reset -f
+
+- name: clean up extra configs and logs
+  loop:
+    - /etc/kubernetes/kubeadm.config
+    - /etc/kubernetes/kubeadm-init.log
+    - /etc/kubernetes/kubeadm-join.log
+    - /etc/kubernetes/pki
+  file:
+    path: "{{ item }}"
+    state: absent
diff --git a/spreadspace/k8s-test.yml b/spreadspace/k8s-test.yml
index ed56cb78..97daa5b0 100644
--- a/spreadspace/k8s-test.yml
+++ b/spreadspace/k8s-test.yml
@@ -6,9 +6,12 @@
 #   - role: sshd
 #   - role: zsh
 
-- import_playbook: ../common/kubernetes.yml
+- import_playbook: ../common/kubernetes-cluster-layout.yml
   vars:
     kubernetes_cluster_layout:
       nodes_group: k8s-test
       masters:
       - s2-k8s-test0
+
+- import_playbook: ../common/kubernetes.yml
+- import_playbook: ../common/kubernetes-cleanup.yml
-- 
cgit v1.2.3


From 8010f57a73885f7abb5c98c1f77c49baa59a7d16 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Fri, 17 Jan 2020 22:24:09 +0100
Subject: kubernetes: multi master cluster works now

---
 inventory/group_vars/k8s-test/main.yml             |  3 +--
 .../kubeadm/master/tasks/primary-master.yml        | 30 ++++++++++++----------
 .../kubeadm/master/tasks/secondary-masters.yml     | 27 ++++++++++---------
 .../kubeadm/master/templates/kubeadm.config.j2     | 11 +++++---
 roles/kubernetes/kubeadm/node/tasks/main.yml       | 25 ++++++++++--------
 .../kubeguard/templates/kubeguard-peer.service.j2  |  3 ++-
 spreadspace/k8s-test.yml                           |  3 +++
 7 files changed, 60 insertions(+), 42 deletions(-)

(limited to 'roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml')

diff --git a/inventory/group_vars/k8s-test/main.yml b/inventory/group_vars/k8s-test/main.yml
index 0d4d0857..b5863ad1 100644
--- a/inventory/group_vars/k8s-test/main.yml
+++ b/inventory/group_vars/k8s-test/main.yml
@@ -14,6 +14,7 @@ kubernetes:
 
   dedicated_master: False
   api_extra_sans:
+  - 89.106.215.23
   - k8s-test.spreadspace.org
 
   pod_ip_range: 172.18.0.0/16
@@ -25,8 +26,6 @@ kubernetes:
 
 
 kubeguard:
-  kube_router_version: 0.4.0-rc1
-
   ## node_index must be in the range between 1 and 190 -> 189 hosts possible
   ##
   ## hardcoded hostnames are not nice but if we do this via host_vars
diff --git a/roles/kubernetes/kubeadm/master/tasks/primary-master.yml b/roles/kubernetes/kubeadm/master/tasks/primary-master.yml
index e814e847..115c8616 100644
--- a/roles/kubernetes/kubeadm/master/tasks/primary-master.yml
+++ b/roles/kubernetes/kubeadm/master/tasks/primary-master.yml
@@ -24,35 +24,39 @@
   #   check_mode: no
   #   register: kubeadm_token_generate
 
-  - name: initialize kubernetes master
-    command: "kubeadm init --config /etc/kubernetes/kubeadm.config --node-name {{ inventory_hostname }}{% if kubernetes_cri_socket is defined %} --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 is defined %} --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"
-    args:
-      creates: /etc/kubernetes/pki/ca.crt
-    register: kubeadm_init
-
-  - name: dump output of kubeadm init to log file
-    when: kubeadm_init.changed
-    copy:
-      content: "{{ kubeadm_init.stdout }}\n"
-      dest: /etc/kubernetes/kubeadm-init.log
+  - 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 is defined %} --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 is defined %} --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"
+      args:
+        creates: /etc/kubernetes/pki/ca.crt
+      register: kubeadm_init
+
+    always:
+    - name: dump output of kubeadm init to log file
+      when: kubeadm_init.changed
+      copy:
+        content: "{{ kubeadm_init.stdout }}\n"
+        dest: /etc/kubernetes/kubeadm-init.log
 
   - name: create bootstrap token for existing cluster
     command: kubeadm token create --ttl 42m
     check_mode: no
     register: kubeadm_token_generate
 
+
 ### cluster is already initialized but config has changed
 
 - name: upgrade cluster config
   when: kubeconfig_kubelet_stats.stat.exists and kubeadm_config is changed
   block:
 
-
   - name: fail for cluster upgrades
     fail:
       msg: "upgrading cluster config is currently not supported!"
 
+
 ### cluster is already initialized
 
 - name: prepare cluster for new nodes
diff --git a/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml b/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml
index 7025ace0..ffe1b4b2 100644
--- a/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml
+++ b/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml
@@ -25,18 +25,21 @@
   set_fact:
     kubeadm_upload_certs_key: "{% if kubeadm_upload_certs.stdout is defined %}{{ kubeadm_upload_certs.stdout_lines | last }}{% endif %}"
 
-- name: join kubernetes secondary master node
-  command: "kubeadm join {{ host_vars[groups['_kubernetes_primary_master_']].kubernetes_kubelet_node_ip }}:6443 --node-name {{ inventory_hostname }}{% if kubernetes_cri_socket is defined %} --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
-  register: kubeadm_join
-
-- name: dump output of kubeadm join to log file
-  when: kubeadm_join is changed
-  # This is not a handler by design to make sure this action runs at this point of the play.
-  copy: # noqa 503
-    content: "{{ kubeadm_join.stdout }}\n"
-    dest: /etc/kubernetes/kubeadm-join.log
+- name: join kubernetes secondary master node and store log
+  block:
+  - name: join kubernetes secondary master node
+    command: "kubeadm join {{ hostvars[groups['_kubernetes_primary_master_'][0]].kubernetes_kubelet_node_ip }}:6443 --node-name {{ inventory_hostname }}{% if kubernetes_kubelet_node_ip is defined %} --apiserver-advertise-address {{ kubernetes_kubelet_node_ip }}{% endif %}{% if kubernetes_cri_socket is defined %} --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
+    register: kubeadm_join
+
+  always:
+  - name: dump output of kubeadm join to log file
+    when: kubeadm_join is changed
+    # This is not a handler by design to make sure this action runs at this point of the play.
+    copy: # noqa 503
+      content: "{{ kubeadm_join.stdout }}\n"
+      dest: /etc/kubernetes/kubeadm-join.log
 
   # TODO: acutally check if node has registered
 - name: give the new master(s) a moment to register
diff --git a/roles/kubernetes/kubeadm/master/templates/kubeadm.config.j2 b/roles/kubernetes/kubeadm/master/templates/kubeadm.config.j2
index 3c10e59b..869c809f 100644
--- a/roles/kubernetes/kubeadm/master/templates/kubeadm.config.j2
+++ b/roles/kubernetes/kubeadm/master/templates/kubeadm.config.j2
@@ -1,4 +1,4 @@
-{# https://godoc.org/k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta1 #}
+{# https://godoc.org/k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta2 #}
 {#  #}
 apiVersion: kubeadm.k8s.io/v1beta2
 kind: InitConfiguration
@@ -6,20 +6,25 @@ kind: InitConfiguration
 {# better control it's lifetime #}
 bootstrapTokens:
 - ttl: "1s"
+{% if kubernetes_kubelet_node_ip is defined %}
+localAPIEndpoint:
+  advertiseAddress: {{ kubernetes_kubelet_node_ip }}
+{% endif %}
 ---
 apiVersion: kubeadm.k8s.io/v1beta2
 kind: ClusterConfiguration
 kubernetesVersion: {{ kubernetes_version }}
 clusterName: {{ kubernetes.cluster_name }}
 imageRepository: k8s.gcr.io
+{% if kubernetes_kubelet_node_ip is defined %}
 controlPlaneEndpoint: "{{ kubernetes_kubelet_node_ip }}:6443"
+{% endif %}
 networking:
   dnsDomain: {{ kubernetes.dns_domain | default('cluster.local') }}
   podSubnet: {{ kubernetes.pod_ip_range }}
   serviceSubnet: {{ kubernetes.service_ip_range }}
 apiServer:
-  extraArgs:
-    advertise-address: {{ kubernetes_kubelet_node_ip }}
+  #extraArgs:
   #   encryption-provider-config: /etc/kubernetes/encryption/config
   # extraVolumes:
   # - name: encryption-config
diff --git a/roles/kubernetes/kubeadm/node/tasks/main.yml b/roles/kubernetes/kubeadm/node/tasks/main.yml
index f7efdd81..61d47111 100644
--- a/roles/kubernetes/kubeadm/node/tasks/main.yml
+++ b/roles/kubernetes/kubeadm/node/tasks/main.yml
@@ -1,13 +1,16 @@
 ---
-- name: join kubernetes node
-  command: "kubeadm join {{ hostvars[groups['_kubernetes_primary_master_'][0]].kubernetes_kubelet_node_ip }}:6443 --node-name {{ inventory_hostname }}{% if kubernetes_cri_socket is defined %} --cri-socket {{ kubernetes_cri_socket }}{% endif %} --token '{{ kube_bootstrap_token }}' --discovery-token-ca-cert-hash '{{ kube_bootstrap_ca_cert_hash }}'"
-  args:
-    creates: /etc/kubernetes/kubelet.conf
-  register: kubeadm_join
+- name: join kubernetes node and store log
+  block:
+  - name: join kubernetes node
+    command: "kubeadm join {{ hostvars[groups['_kubernetes_primary_master_'][0]].kubernetes_kubelet_node_ip }}:6443 --node-name {{ inventory_hostname }}{% if kubernetes_cri_socket is defined %} --cri-socket {{ kubernetes_cri_socket }}{% endif %} --token '{{ kube_bootstrap_token }}' --discovery-token-ca-cert-hash '{{ kube_bootstrap_ca_cert_hash }}'"
+    args:
+      creates: /etc/kubernetes/kubelet.conf
+    register: kubeadm_join
 
-- name: dump output of kubeadm join to log file
-  when: kubeadm_join is changed
-  # This is not a handler by design to make sure this action runs at this point of the play.
-  copy: # noqa 503
-    content: "{{ kubeadm_join.stdout }}\n"
-    dest: /etc/kubernetes/kubeadm-join.log
+  always:
+  - name: dump output of kubeadm join to log file
+    when: kubeadm_join is changed
+    # This is not a handler by design to make sure this action runs at this point of the play.
+    copy: # noqa 503
+      content: "{{ kubeadm_join.stdout }}\n"
+      dest: /etc/kubernetes/kubeadm-join.log
diff --git a/roles/kubernetes/net/kubeguard/templates/kubeguard-peer.service.j2 b/roles/kubernetes/net/kubeguard/templates/kubeguard-peer.service.j2
index 6f36b571..9ca444e8 100644
--- a/roles/kubernetes/net/kubeguard/templates/kubeguard-peer.service.j2
+++ b/roles/kubernetes/net/kubeguard/templates/kubeguard-peer.service.j2
@@ -4,6 +4,7 @@ After=network.target
 Requires=kubeguard-interfaces.service
 After=kubeguard-interfaces.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 | direct_net_zone(inventory_hostname, peer) -%}
 {% if direct_zone %}
@@ -22,7 +23,7 @@ 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') }}
+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 }}
diff --git a/spreadspace/k8s-test.yml b/spreadspace/k8s-test.yml
index 97daa5b0..f21b3fae 100644
--- a/spreadspace/k8s-test.yml
+++ b/spreadspace/k8s-test.yml
@@ -12,6 +12,9 @@
       nodes_group: k8s-test
       masters:
       - s2-k8s-test0
+      - s2-k8s-test1
+      - s2-k8s-test2
+      primary_master: s2-k8s-test0
 
 - import_playbook: ../common/kubernetes.yml
 - import_playbook: ../common/kubernetes-cleanup.yml
-- 
cgit v1.2.3


From b64058268b377cc78057b8ba8d3190e520d33053 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Fri, 17 Jan 2020 22:42:27 +0100
Subject: kubernetes: kubernetes_overlay_node_ip

---
 common/kubernetes.yml                                       | 5 +++++
 inventory/group_vars/k8s-test/main.yml                      | 5 ++---
 roles/kubernetes/kubeadm/base/tasks/main.yml                | 4 ++--
 roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml | 2 +-
 roles/kubernetes/kubeadm/master/templates/kubeadm.config.j2 | 8 ++++----
 roles/kubernetes/kubeadm/node/tasks/main.yml                | 2 +-
 6 files changed, 15 insertions(+), 11 deletions(-)

(limited to 'roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml')

diff --git a/common/kubernetes.yml b/common/kubernetes.yml
index 4fc8cef2..d5b58767 100644
--- a/common/kubernetes.yml
+++ b/common/kubernetes.yml
@@ -22,6 +22,11 @@
         msg: "At least one node_index is < 1 (indizes start at 1)"
         that: (kubeguard.node_index.values() | min) > 0
 
+    - name: check whether overlay node io is configured > 0
+      assert:
+        msg: "For kubeguard to work you need to configure kubernetes_overlay_node_ip"
+        that: kubernetes_overlay_node_ip is defined
+
   - name: make sure the kubernetes_cri_socket variable is configured correctly
     when: kubernetes_container_runtime == 'containerd'
     assert:
diff --git a/inventory/group_vars/k8s-test/main.yml b/inventory/group_vars/k8s-test/main.yml
index b5863ad1..60d381ec 100644
--- a/inventory/group_vars/k8s-test/main.yml
+++ b/inventory/group_vars/k8s-test/main.yml
@@ -8,6 +8,7 @@ containerd_lvm:
 kubernetes_version: 1.17.1
 kubernetes_container_runtime: containerd
 kubernetes_network_plugin: kubeguard
+kubernetes_cri_socket: "unix:///run/containerd/containerd.sock"
 
 kubernetes:
   cluster_name: k8s-test
@@ -45,6 +46,4 @@ kubeguard:
         s2-k8s-test0: direct0
         s2-k8s-test1: direct0
 
-
-kubernetes_kubelet_node_ip: "{{ kubernetes.pod_ip_range | ipsubnet(kubernetes.pod_ip_range_size, kubeguard.node_index[inventory_hostname]) | ipaddr(1) | ipaddr('address') }}"
-kubernetes_cri_socket: "unix:///run/containerd/containerd.sock"
+kubernetes_overlay_node_ip: "{{ kubernetes.pod_ip_range | ipsubnet(kubernetes.pod_ip_range_size, kubeguard.node_index[inventory_hostname]) | ipaddr(1) | ipaddr('address') }}"
diff --git a/roles/kubernetes/kubeadm/base/tasks/main.yml b/roles/kubernetes/kubeadm/base/tasks/main.yml
index 37944915..69a09811 100644
--- a/roles/kubernetes/kubeadm/base/tasks/main.yml
+++ b/roles/kubernetes/kubeadm/base/tasks/main.yml
@@ -16,11 +16,11 @@
     selection: hold
 
 - name: set kubelet node-ip
-  when: kubernetes_kubelet_node_ip is defined
+  when: kubernetes_overlay_node_ip is defined
   lineinfile:
     name: "/etc/default/kubelet"
     regexp: '^KUBELET_EXTRA_ARGS='
-    line: 'KUBELET_EXTRA_ARGS=--node-ip={{ kubernetes_kubelet_node_ip }}'
+    line: 'KUBELET_EXTRA_ARGS=--node-ip={{ kubernetes_overlay_node_ip }}'
     create: yes
 
 - name: add kubeadm completion for shells
diff --git a/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml b/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml
index ffe1b4b2..3c800a87 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
-    command: "kubeadm join {{ hostvars[groups['_kubernetes_primary_master_'][0]].kubernetes_kubelet_node_ip }}:6443 --node-name {{ inventory_hostname }}{% if kubernetes_kubelet_node_ip is defined %} --apiserver-advertise-address {{ kubernetes_kubelet_node_ip }}{% endif %}{% if kubernetes_cri_socket is defined %} --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 }}"
+    command: "kubeadm join {{ hostvars[groups['_kubernetes_primary_master_'][0]].kubernetes_overlay_node_ip }}:6443 --node-name {{ inventory_hostname }}{% if kubernetes_overlay_node_ip is defined %} --apiserver-advertise-address {{ kubernetes_overlay_node_ip }}{% endif %}{% if kubernetes_cri_socket is defined %} --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
     register: kubeadm_join
diff --git a/roles/kubernetes/kubeadm/master/templates/kubeadm.config.j2 b/roles/kubernetes/kubeadm/master/templates/kubeadm.config.j2
index 869c809f..06d59ced 100644
--- a/roles/kubernetes/kubeadm/master/templates/kubeadm.config.j2
+++ b/roles/kubernetes/kubeadm/master/templates/kubeadm.config.j2
@@ -6,9 +6,9 @@ kind: InitConfiguration
 {# better control it's lifetime #}
 bootstrapTokens:
 - ttl: "1s"
-{% if kubernetes_kubelet_node_ip is defined %}
+{% if kubernetes_overlay_node_ip is defined %}
 localAPIEndpoint:
-  advertiseAddress: {{ kubernetes_kubelet_node_ip }}
+  advertiseAddress: {{ kubernetes_overlay_node_ip }}
 {% endif %}
 ---
 apiVersion: kubeadm.k8s.io/v1beta2
@@ -16,8 +16,8 @@ kind: ClusterConfiguration
 kubernetesVersion: {{ kubernetes_version }}
 clusterName: {{ kubernetes.cluster_name }}
 imageRepository: k8s.gcr.io
-{% if kubernetes_kubelet_node_ip is defined %}
-controlPlaneEndpoint: "{{ kubernetes_kubelet_node_ip }}:6443"
+{% if kubernetes_overlay_node_ip is defined %}
+controlPlaneEndpoint: "{{ kubernetes_overlay_node_ip }}:6443"
 {% endif %}
 networking:
   dnsDomain: {{ kubernetes.dns_domain | default('cluster.local') }}
diff --git a/roles/kubernetes/kubeadm/node/tasks/main.yml b/roles/kubernetes/kubeadm/node/tasks/main.yml
index 61d47111..e4fff98b 100644
--- a/roles/kubernetes/kubeadm/node/tasks/main.yml
+++ b/roles/kubernetes/kubeadm/node/tasks/main.yml
@@ -2,7 +2,7 @@
 - name: join kubernetes node and store log
   block:
   - name: join kubernetes node
-    command: "kubeadm join {{ hostvars[groups['_kubernetes_primary_master_'][0]].kubernetes_kubelet_node_ip }}:6443 --node-name {{ inventory_hostname }}{% if kubernetes_cri_socket is defined %} --cri-socket {{ kubernetes_cri_socket }}{% endif %} --token '{{ kube_bootstrap_token }}' --discovery-token-ca-cert-hash '{{ kube_bootstrap_ca_cert_hash }}'"
+    command: "kubeadm join {{ hostvars[groups['_kubernetes_primary_master_'][0]].kubernetes_overlay_node_ip }}:6443 --node-name {{ inventory_hostname }}{% if kubernetes_cri_socket is defined %} --cri-socket {{ kubernetes_cri_socket }}{% endif %} --token '{{ kube_bootstrap_token }}' --discovery-token-ca-cert-hash '{{ kube_bootstrap_ca_cert_hash }}'"
     args:
       creates: /etc/kubernetes/kubelet.conf
     register: kubeadm_join
-- 
cgit v1.2.3


From db478d9fde9bc89b4ab3bca7ffc7540794e85f10 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Fri, 17 Jan 2020 23:24:10 +0100
Subject: kubernetes: added haproxy for load balancing api servers

---
 roles/kubernetes/kubeadm/base/tasks/main.yml       | 25 +++++++++++++++
 .../kubeadm/base/templates/haproxy.cfg.j2          | 36 ++++++++++++++++++++++
 .../kubeadm/master/tasks/secondary-masters.yml     |  2 +-
 .../kubeadm/master/templates/kubeadm.config.j2     |  9 +++---
 roles/kubernetes/kubeadm/node/tasks/main.yml       |  2 +-
 spreadspace/k8s-test.yml                           | 15 ++++-----
 6 files changed, 73 insertions(+), 16 deletions(-)
 create mode 100644 roles/kubernetes/kubeadm/base/templates/haproxy.cfg.j2

(limited to 'roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml')

diff --git a/roles/kubernetes/kubeadm/base/tasks/main.yml b/roles/kubernetes/kubeadm/base/tasks/main.yml
index 69a09811..8e913560 100644
--- a/roles/kubernetes/kubeadm/base/tasks/main.yml
+++ b/roles/kubernetes/kubeadm/base/tasks/main.yml
@@ -2,6 +2,8 @@
 - name: install kubeadm and kubectl
   apt:
     name:
+    - haproxy
+    - hatop
     - "kubeadm{% if kubernetes.pkg_version is defined %}={{ kubernetes.pkg_version }}{% endif %}"
     - "kubectl{% if kubernetes.pkg_version is defined %}={{ kubernetes.pkg_version }}{% endif %}"
     state: present
@@ -33,3 +35,26 @@
     marker: "### {mark} ANSIBLE MANAGED BLOCK for kubeadm ###"
     content: |
       source <(kubeadm completion {{ item }})
+
+- name: configure haproxy
+  template:
+    src: haproxy.cfg.j2
+    dest: /etc/haproxy/haproxy.cfg
+  register: haproxy_config
+
+- name: (re)start haproxy
+  systemd:
+    name: haproxy
+    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"
diff --git a/roles/kubernetes/kubeadm/base/templates/haproxy.cfg.j2 b/roles/kubernetes/kubeadm/base/templates/haproxy.cfg.j2
new file mode 100644
index 00000000..3de6ac00
--- /dev/null
+++ b/roles/kubernetes/kubeadm/base/templates/haproxy.cfg.j2
@@ -0,0 +1,36 @@
+global
+    log /dev/log local0
+    log /dev/log local1 notice
+    chroot /var/lib/haproxy
+    stats socket /run/haproxy/admin.sock mode 660 level admin expose-fd listeners
+    stats timeout 30s
+    user haproxy
+    group haproxy
+    daemon
+
+frontend kube_api
+{% if '_kubernetes_masters_' in group_names %}
+    bind *:6443
+{% else %}
+    bind 127.0.0.1:6443
+{% endif %}
+    mode tcp
+    timeout client 3h
+    default_backend kube_api
+
+backend kube_api
+    mode tcp
+{% if '_kubernetes_masters_' in group_names %}
+    balance first
+{% else %}
+    balance roundrobin
+{% endif %}
+    option log-health-checks
+    option httpchk GET /healthz
+    http-check expect string ok
+    default-server inter 5s fall 3 rise 2
+    timeout connect 5s
+    timeout server 3h
+{% for master in groups['_kubernetes_masters_'] %}
+    server {{ hostvars[master].inventory_hostname }} {{ hostvars[master].kubernetes_overlay_node_ip | default(hostvars[master].ansible_default_ipv4.address) }}:6442 {% if master == inventory_hostname %}id 1{% endif %} check check-ssl verify none
+{% endfor %}
diff --git a/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml b/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml
index 3c800a87..c00c3203 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
-    command: "kubeadm join {{ hostvars[groups['_kubernetes_primary_master_'][0]].kubernetes_overlay_node_ip }}:6443 --node-name {{ inventory_hostname }}{% if kubernetes_overlay_node_ip is defined %} --apiserver-advertise-address {{ kubernetes_overlay_node_ip }}{% endif %}{% if kubernetes_cri_socket is defined %} --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 }}"
+    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 is defined %} --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
     register: kubeadm_join
diff --git a/roles/kubernetes/kubeadm/master/templates/kubeadm.config.j2 b/roles/kubernetes/kubeadm/master/templates/kubeadm.config.j2
index 06d59ced..f48a34f3 100644
--- a/roles/kubernetes/kubeadm/master/templates/kubeadm.config.j2
+++ b/roles/kubernetes/kubeadm/master/templates/kubeadm.config.j2
@@ -6,8 +6,9 @@ kind: InitConfiguration
 {# better control it's lifetime #}
 bootstrapTokens:
 - ttl: "1s"
-{% if kubernetes_overlay_node_ip is defined %}
 localAPIEndpoint:
+  bindPort: 6442
+{% if kubernetes_overlay_node_ip is defined %}
   advertiseAddress: {{ kubernetes_overlay_node_ip }}
 {% endif %}
 ---
@@ -16,15 +17,13 @@ kind: ClusterConfiguration
 kubernetesVersion: {{ kubernetes_version }}
 clusterName: {{ kubernetes.cluster_name }}
 imageRepository: k8s.gcr.io
-{% if kubernetes_overlay_node_ip is defined %}
-controlPlaneEndpoint: "{{ kubernetes_overlay_node_ip }}:6443"
-{% endif %}
+controlPlaneEndpoint: 127.0.0.1:6443
 networking:
   dnsDomain: {{ kubernetes.dns_domain | default('cluster.local') }}
   podSubnet: {{ kubernetes.pod_ip_range }}
   serviceSubnet: {{ kubernetes.service_ip_range }}
 apiServer:
-  #extraArgs:
+  # extraArgs:
   #   encryption-provider-config: /etc/kubernetes/encryption/config
   # extraVolumes:
   # - name: encryption-config
diff --git a/roles/kubernetes/kubeadm/node/tasks/main.yml b/roles/kubernetes/kubeadm/node/tasks/main.yml
index e4fff98b..1d5178ea 100644
--- a/roles/kubernetes/kubeadm/node/tasks/main.yml
+++ b/roles/kubernetes/kubeadm/node/tasks/main.yml
@@ -2,7 +2,7 @@
 - name: join kubernetes node and store log
   block:
   - name: join kubernetes node
-    command: "kubeadm join {{ hostvars[groups['_kubernetes_primary_master_'][0]].kubernetes_overlay_node_ip }}:6443 --node-name {{ inventory_hostname }}{% if kubernetes_cri_socket is defined %} --cri-socket {{ kubernetes_cri_socket }}{% endif %} --token '{{ kube_bootstrap_token }}' --discovery-token-ca-cert-hash '{{ kube_bootstrap_ca_cert_hash }}'"
+    command: "kubeadm join 127.0.0.1:6443 --node-name {{ inventory_hostname }}{% if kubernetes_cri_socket is defined %} --cri-socket {{ kubernetes_cri_socket }}{% endif %} --token '{{ kube_bootstrap_token }}' --discovery-token-ca-cert-hash '{{ kube_bootstrap_ca_cert_hash }}'"
     args:
       creates: /etc/kubernetes/kubelet.conf
     register: kubeadm_join
diff --git a/spreadspace/k8s-test.yml b/spreadspace/k8s-test.yml
index f21b3fae..b94f8301 100644
--- a/spreadspace/k8s-test.yml
+++ b/spreadspace/k8s-test.yml
@@ -1,10 +1,10 @@
 ---
-# - name: Basic Node Setup
-#   hosts: k8s-test
-#   roles:
-#   - role: base
-#   - role: sshd
-#   - role: zsh
+- name: Basic Node Setup
+  hosts: k8s-test
+  roles:
+  - role: base
+  - role: sshd
+  - role: zsh
 
 - import_playbook: ../common/kubernetes-cluster-layout.yml
   vars:
@@ -12,9 +12,6 @@
       nodes_group: k8s-test
       masters:
       - s2-k8s-test0
-      - s2-k8s-test1
-      - s2-k8s-test2
-      primary_master: s2-k8s-test0
 
 - import_playbook: ../common/kubernetes.yml
 - import_playbook: ../common/kubernetes-cleanup.yml
-- 
cgit v1.2.3