hetzner draft

setup/README.md

@@ -1,6 +1,6 @@
 # Setup up k8s cluster
 
-currently only supports single master, stacked etcd cluster with three to six worker nodes.
+currently only supports single controller, stacked etcd cluster with three to six worker nodes.
 
 run:
 

setup/create-servers.py

@@ -0,0 +1,58 @@
+#!/usr/bin/env python
+
+import yaml
+import requests
+
+ips = {}
+config = yaml.load(open('hetzner-config.yaml', 'r'))
+headers = {"Authorization": "Bearer {}".format(config['api_key'])}
+
+
+def create_server(server_name, server_type='cx11', server_location='ngb1'):
+    location = input(server_name + ' location: ')
+    frontend = {
+        "name": server_name,
+        "server_type": server_type,
+        "location": server_location,
+        "start_after_create": True,
+        "image": "debian-9",
+        "ssh_keys": [key.get('name') for key in config.get('ssh_keys')],
+        "user_data": "#cloud-config\nruncmd:\n- [touch, /root/cloud-init-worked]\n",
+        "automount": False,
+    }
+    resp = requests.post('https://api.hetzner.cloud/v1/servers', headers=headers, json=frontend)
+    ip = resp.json().get('server').get('public_net').get('ipv4').get('ip')
+    frontend_dns = {
+        "ip": ip,
+        "dns_ptr": "{}.{}".format(server_name, config.get('domain'))
+    }
+    requests.post('https://api.hetzner.cloud/v1/servers/{}/actions/change_dns_ptr'.format(
+            resp.json().get('server').get('id')
+        ), headers=headers, json=frontend_dns)
+    return ip
+
+
+for ssh_key in config['ssh_keys']:
+    requests.post('https://api.hetzner.cloud/v1/ssh_keys', headers=headers, json={
+        "name": ssh_key.get('name'),
+        "public_key": ssh_key.get('pubkey'),
+    })
+
+locations_req = requests.get('https://api.hetzner.cloud/v1/locations', headers=headers)
+locations = [loc['name'] for loc in locations_req.json().get('locations')]
+print('valid locations: {}'.format(locations))
+
+
+for host in ['control01', 'control02', 'control03']:
+    ips[host] = server_create(host)
+
+
+print("YOUR NEW INVENTORY")
+print("[frontend]")
+print("cluster-frontend ansible_ssh_host={}".format(ips['frontend']))
+
+print("[control]")
+print("cluster-control01 ansible_ssh_host={}".format(ips['control01']))
+print("#cluster-control02 ansible_ssh_host={}".format(ips['control02']))
+print("#cluster-control03 ansible_ssh_host={}".format(ips['control03']))
+

setup/generate-keys.sh

@@ -1,5 +1,5 @@
 cd host_vars
-for i in cluster-master01 cluster-master02 cluster-master03 cluster-worker01 cluster-worker02 cluster-worker03 cluster-worker04 cluster-worker05 cluster-worker06
+for i in cluster-frontend cluster-control01 cluster-control02 cluster-control03 cluster-worker01 cluster-worker02 cluster-worker03 cluster-worker04 cluster-worker05 cluster-worker06
 do
   sed -i "s#^wg_secret_key.*#wg_secret_key: $(wg genkey)#" ${i}.yaml
   pubkey=$(cat ${i}.yaml | yq .wg_secret_key | sed 's/"//g' | wg pubkey)

setup/hetzner-config.yaml

@@ -0,0 +1,5 @@
+api_key: "123"
+domain: 'cluster.kritis.systems'
+ssh_keys:
+  - name: your_key
+    pubkey: ssh-ed25519 AAAA1 

setup/host_vars/cluster-control01.yaml

@@ -0,0 +1,3 @@
+wg_secret_key: kKQhmkBWXxSTcZX50BstuxfSfpMDgrhA1wldx1d6q0Y=
+wg_public_key: vOIriQKWsL4haBCVFUCqp25ciBQrPf88CUtkMNQYGSY=
+wg_ip: 10.42.23.11

setup/host_vars/cluster-control02.yaml

@@ -0,0 +1,3 @@
+wg_secret_key: IIn4Eiy6AXDevSIWfJwG9pme11gnC2DT/ieZuGdB+0M=
+wg_public_key: +8OofyGdGtmp6/NMGsxcUfUlqctvm/GZeoGj9fNOe2w=
+wg_ip: 10.42.23.12

setup/host_vars/cluster-control03.yaml

@@ -0,0 +1,3 @@
+wg_secret_key: YM+dYmWJxk5ccTLOLjU+4z/p1gNfMtK6gW0x2Eb8C3s=
+wg_public_key: RE7Uf3uBnllAk6m5qdbuYdh/GRaoSpHTCY63pVaZF2w=
+wg_ip: 10.42.23.13

setup/host_vars/cluster-frontend.yaml

@@ -0,0 +1,3 @@
+wg_secret_key: mLZKKs1VKW33pIBZJCYZhkfeU/sSLx7h+Eqfk10ue3w=
+wg_public_key: 3X5My19hXKILg0Sk6uEPprulY8mBayVbucEaMFTromw=
+wg_ip: 10.42.23.1

setup/host_vars/cluster-master01.yaml

@@ -1,3 +0,0 @@
-wg_secret_key: uC00qKf4vbfQ1Mn/ndWFX9h3JXKDv5ijIXpjchY/2Gc=
-wg_public_key: 4a0DAKvszfFGxDn8Pq9OMdyZbqiELNalF/bOU+lS4ww=
-wg_ip: 10.42.23.11

setup/host_vars/cluster-master02.yaml

@@ -1,3 +0,0 @@
-wg_secret_key: QNqBGoi2Vd/J0Zc+s5G0y+yPFqV9kmqH9pGxb5ojDGE=
-wg_public_key: 8wmpoiFyWhHEAP88dR1bBsZP7bQOKAUkNMki5S/9uFc=
-wg_ip: 10.42.23.12

setup/host_vars/cluster-master03.yaml

@@ -1,3 +0,0 @@
-wg_secret_key: sM+AFAKPGOcXNalGCGoBbCXG9msG5qF66Wz49CVvL2A=
-wg_public_key: PhCEr0T1F0ABbFN0ngkIcLQ8OXmQZj+/U3DgAsWXXA8=
-wg_ip: 10.42.23.13

setup/host_vars/cluster-worker01.yaml

@@ -1,3 +1,3 @@
-wg_secret_key: MMw5jxqi+4iO3pS1C99+Hck9jabDssQuQ3yC5Rhsgn0=
-wg_public_key: GG1AGeGLX2KiCiK+/5wH3JhHDZvKHexfZgVhyX3I8Ag=
+wg_secret_key: MHD6h2gFkzd2VhCVZtz89Jt9SxdcxwvZRqQ1PDZYBnk=
+wg_public_key: WOqHy73XjVWjsyt2ZEMkJdXhtmKIx8E9/fPN3o7vcDQ=
 wg_ip: 10.42.23.21

setup/host_vars/cluster-worker02.yaml

@@ -1,3 +1,3 @@
-wg_secret_key: KBMAarDchzYpPIq7J9LRUgll5jeo9wJkgjwC+tJc80Y=
-wg_public_key: CiOc+aYn9xCvLLm2rDEE0HrfY9n/kHggwK0LNRDD0Qg=
+wg_secret_key: 4Jk5ybHjBIyigcn7NPHgkms7JY1If/R/s8tqbR77MUk=
+wg_public_key: QUT9iS/yxXKWWRQtLJ+AW5f3inVcwCHC3MLN4KJ3Uk4=
 wg_ip: 10.42.23.22

setup/host_vars/cluster-worker03.yaml

@@ -1,3 +1,3 @@
-wg_secret_key: AE9mrGQ3jJCqdWj6ZAHu9mdULr4HyBV5vE1+Wzjo+FY=
-wg_public_key: hJ2CtHqxeB321TJZD+7bzSMNA1GzEteckUb//6KzjhQ=
+wg_secret_key: WHc8cheBKC0I57bXUsfSUFDrRoPzafSFKUb7cdThbFs=
+wg_public_key: nGf7wf8CvVtp1cfdngRda22TiqTMrFQY+KeZds8gnV8=
 wg_ip: 10.42.23.23

setup/host_vars/cluster-worker04.yaml

@@ -1,3 +1,3 @@
-wg_secret_key: WFMMXY1HPcIUw2I/2Z8x6wyR0r/CnGYeV6Rmyt6WbXo=
-wg_public_key: Tc+GCAYefY+MJMwDVqyjLuR0JPvZMFj2xtS9oTAQvSg=
+wg_secret_key: 6D/qBcJV+fxouP0ljRLYBcOxDPgd25BrKy6GKQWZ+nA=
+wg_public_key: /HrA+19Ws+7SCDpAKnOpVhjGE7L25dez9PvApdgOIRc=
 wg_ip: 10.42.23.24

setup/host_vars/cluster-worker05.yaml

@@ -1,3 +1,3 @@
-wg_secret_key: oEql4vfFXVqdI6HiSDyQsSK19Xs+IzyMrz+7gbRgWWQ=
-wg_public_key: xQozpZLyW7Gl+xYsLBvegmEtjhB7vBP2sKBJgfP22D4=
+wg_secret_key: CKKgfHZ+kKLiuY3vu8ICITrZqouf1Hg3ZJuVQJHJ32o=
+wg_public_key: ZdKh3IbP32xhUmSEMiDCmT28+RtoedhoF8ycE3StGQs=
 wg_ip: 10.42.23.25

setup/host_vars/cluster-worker06.yaml

@@ -1,3 +1,3 @@
-wg_secret_key: WCvlYVbX/ieEU6ZLNJcQEAl9YcHASiLMgrmkU9cUElI=
-wg_public_key: iV+fDDW5bw9ANklUKa9Vbqi+fwJCzqebahcT7nE6PCA=
+wg_secret_key: aK31k1FRtBeuUwdMd5haafX8czRcz7p8Ij7Ev9BzCHo=
+wg_public_key: 1QyStXJpOGnsuLOjyOPiT1krelpZGDDrC3peGVL8BzQ=
 wg_ip: 10.42.23.26

setup/inventory.yaml

@@ -1,12 +1,15 @@
-[master]
-cluster-master01 ansible_ssh_host=212.47.246.128
-#cluster-master02 ansible_ssh_host=
-#cluster-master03 ansible_ssh_host=
+#[frontend]
+#cluster-frontend ansible_ssh_host=
+
+[control]
+cluster-control01 ansible_ssh_host=
+#cluster-control02 ansible_ssh_host=
+#cluster-control03 ansible_ssh_host=
 
 [worker]
-cluster-worker01 ansible_ssh_host=51.15.238.164
-cluster-worker02 ansible_ssh_host=51.158.115.24
-cluster-worker03 ansible_ssh_host=51.158.108.159
+cluster-worker01 ansible_ssh_host=
+cluster-worker02 ansible_ssh_host=
+cluster-worker03 ansible_ssh_host=
 #cluster-worker04 ansible_ssh_host=
 #cluster-worker05 ansible_ssh_host=
 #cluster-worker06 ansible_ssh_host=

setup/setup.yml

@@ -106,7 +106,7 @@
         name: docker
         state: restarted
 
-- hosts: master
+- hosts: control
   tasks:
     - name: install haproxy
       apt:
@@ -129,13 +129,13 @@
         name: haproxy
         state: restarted
 
-- hosts: cluster-master01
+- hosts: cluster-control01
   tasks:
     - name: init kubeadm
       shell: kubeadm init --apiserver-advertise-address 10.42.23.11 --pod-network-cidr=10.244.0.0/16 > kubeadm.log
       args:
         creates: kubeadm.log
-    - name: fetch kubeadm.log from master
+    - name: fetch kubeadm.log from control
       fetch:
         src: kubeadm.log
         dest: kubeadm-{{ inventory_hostname }}.log
@@ -152,7 +152,7 @@
 - hosts: worker
   tasks:
     - name: fetch join command
-      command: tail -2 kubeadm-cluster-master01.log
+      command: tail -2 kubeadm-cluster-control01.log
       register: joincommand
       delegate_to: localhost
         

setup/templates/wg-k8s.conf

@@ -3,9 +3,9 @@ PrivateKey = {{ wg_secret_key }}
 ListenPort = 51820
 
 [Peer]
-Endpoint = {{ hostvars['cluster-master01'].ansible_ssh_host }}:51820
-PublicKey = {{ hostvars['cluster-master01'].wg_public_key }}
-AllowedIPs = {{ hostvars['cluster-master01'].wg_ip }}/32
+Endpoint = {{ hostvars['cluster-control01'].ansible_ssh_host }}:51820
+PublicKey = {{ hostvars['cluster-control01'].wg_public_key }}
+AllowedIPs = {{ hostvars['cluster-control01'].wg_ip }}/32
 
 [Peer]
 Endpoint = {{ hostvars['cluster-worker01'].ansible_ssh_host }}:51820