Deploying kubernetes with kubespray

1
2
3
4
5

# On deployer
ssh key-gen

# and other node input the deployer pubkey into .ssh/authorized_keys
nano .ssh/authorized_keys

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17

# Do it on deployer node
nano /etc/ansible/ansible.cfg

---
[defaults]
host_key_checking=False
pipelining=True
forks=100
---

# edit /etc/hosts
nano /etc/hosts

---
10.13.13.10 lq-master
10.13.13.20 lq-worker
---

1

git clone https://github.com/kubernetes-sigs/kubespray.git

1

apt install python3 python3-pip python3-venv

1
2
3
4

# Do it on deployer node
# create venv and activate 
python3 -m venv venv
source venv/bin/activate && cd kubespray

1
2

pip install -U pip
pip install -r requirements-{ansible-version}.txt # 2.11 or 2.12

1

cp -frp inventory/sample inventory/calico-online

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37

# Declare ip address
declare -a IPS=(10.13.13.10 10.13.13.20)

# Generate config file of inventory hosts.yaml
CONFIG_FILE=inventory/calico-online/hosts.yaml python3 contrib/inventory_builder/inventory.py ${IPS[@]}

# Edit the invetory file
nano inventory/calico-online/hosts.yaml

---
all:
  hosts:
    lq-master:
      ansible_host: 10.13.13.10
      ip: 10.13.13.10
      access_ip: 10.13.13.10
    lq-worker:
      ansible_host: 10.13.13.20
      ip: 10.13.13.20
      access_ip: 10.13.13.20
  children:
    kube_control_plane:
      hosts:
        lq-master:
    kube_node:
      hosts:
        lq-worker:
    etcd:
      hosts:
        lq-master:
    k8s_cluster:
      children:
        kube_control_plane:
        kube_node:
    calico_rr:
      hosts: {}
---

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14

nano inventory/calico-online/group_vars/k8s-cluste/k8s-cluster.yaml

---
# line 20 define kubernetes version
kube_version: v1.25.4 # depending on what you want
# line 70 CNI plugin
kube_network_plugin: calico # caico,flannel .etc
# line 76 define internal network for service
kube_service_addresses: 10.233.0.0/18
# line 81 define pods subnet
kube_pods_subnet: 10.233.64.0/18
# line 224 define container manager
container_manager: containerd

1
2
3
4
5

# Check connectione between deployer and node
ansible -i inventory/calico-online/hosts.yaml all -m ping

# Run kubespray ansible
ansible-playbook -i inventory/calico-online/hosts.yaml --become --become-user=root cluster.yml