init
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1b788dbe37
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* adapt IPs in inventory.yaml
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* add host keys `./trust-hosts.sh`
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* change wg encryption keys in host\_vars: `./generate-keys.sh`
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* requires wireguard-tools, yq
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* run play for the first time `ansible-playbook -i inventory.yaml -u root -t initial setup.yaml` - this will upgrade all packages and reboot the system
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* run play again, without the tag
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[master]
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cluster-master01 ansible_ssh_host=212.47.246.128
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#cluster-master02 ansible_ssh_host=
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#cluster-master03 ansible_ssh_host=
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[worker]
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cluster-worker01 ansible_ssh_host=51.15.238.164
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cluster-worker02 ansible_ssh_host=51.158.115.24
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cluster-worker03 ansible_ssh_host=51.158.108.159
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#cluster-worker04 ansible_ssh_host=
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#cluster-worker05 ansible_ssh_host=
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#cluster-worker06 ansible_ssh_host=
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---
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- hosts: all
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tasks:
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- name: deactivate swap
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command: swapoff -a
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when:
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- ansible_swaptotal_mb != 0
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notify: disable swap
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- name: upgrade all the packages
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apt:
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name: '*'
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state: latest
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update_cache: yes
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tags: ['initial', 'never']
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- name: install deps
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apt:
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name: ['aptitude', 'sudo', 'nfs-common', 'apt-transport-https', 'ca-certificates', 'curl', 'gnupg2', 'software-properties-common']
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state: present
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- name: import docker gpg key
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apt_key:
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url: "https://download.docker.com/linux/debian/gpg"
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state: present
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- name: add docker repository
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apt_repository:
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repo: "deb [arch=amd64] https://download.docker.com/linux/debian {{ansible_lsb.codename}} stable"
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state: present
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- name: install docker
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apt:
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update_cache: yes
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name: ['docker-ce', 'python-pip', 'python-setuptools']
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state: present
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- name: enable & start docker
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systemd:
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name: docker
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enabled: yes
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state: started
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- name: install wireguard repo
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apt_repository:
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repo: "deb http://deb.debian.org/debian/ unstable main"
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state: present
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- name: pin unstables
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blockinfile:
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path: /etc/apt/preferences.d/limit-unstable
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create: yes
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block: |
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Package: *
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Pin: release a=unstable
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Pin-Priority: 90
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- name: install wireguard
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apt:
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update_cache: yes
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name: wireguard
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state: present
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#- name: generate wireguard keys
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# shell: wg genkey | tee wg-private.key | wg pubkey > wg-public.key
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# args:
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# creates: wg-private.key
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- name: configure wireguard interface
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template:
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src: templates/wireguard.cfg
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dest: /etc/network/interfaces.d/wireguard.cfg
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notify: restart wireguard
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- name: configure wireguard connections
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template:
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src: templates/wg-k8s.conf
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dest: /etc/wireguard/wg-k8s.conf
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notify: restart wireguard
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- name: install k8s apt key
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apt_key:
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url: https://packages.cloud.google.com/apt/doc/apt-key.gpg
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state: present
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- name: add k8s repository
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apt_repository:
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repo: "deb https://apt.kubernetes.io/ kubernetes-xenial main"
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state: present
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- name: install k8s
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apt:
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update_cache: yes
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name: ["kubelet", "kubeadm", "kubectl"]
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state: present
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#- name: init kubeadm
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# command: kubeadm init --apiserver-advertise-address 10.42.23.11 --pod-network-cidr=10.244.0.0/16 > kubeadm.log
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# args:
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# creates: kubeadm.log
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#kubectl apply -f https://docs.projectcalico.org/v3.3/getting-started/kubernetes/installation/hosted/canal/rbac.yaml
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#kubectl apply -f https://docs.projectcalico.org/v3.3/getting-started/kubernetes/installation/hosted/canal/canal.yaml
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- name: restart system
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command: reboot
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tags: ['initial', 'never']
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handlers:
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- name: disable swap
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lineinfile:
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path: /etc/fstab
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regexp: '.*swap.*'
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state: absent
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- name: restart wireguard
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shell: ifdown wg-k8s; ifup wg-k8s
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- hosts: master
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tasks:
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- name: install haproxy
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apt:
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name: haproxy
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state: present
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notify: restart haproxy
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- name: copy haproxy template
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template:
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src: templates/haproxy.cfg
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dest: /etc/haproxy/haproxy.cfg
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notify: restart haproxy
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- name: enable haproxy service
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service:
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name: haproxy
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enabled: true
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notify: restart haproxy
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handlers:
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- name: restart haproxy
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service:
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name: haproxy
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state: restarted
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global
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daemon
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maxconn 256
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defaults
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mode http
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timeout connect 5000ms
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timeout client 50000ms
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timeout server 50000ms
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listen http-in
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bind *:80
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{% for host in groups['worker'] %}
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server server-{{hostvars[host].ansible_nodename}} {{ hostvars[host].wg_ip }}:30080 maxconn 32
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{% endfor %}
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listen https-in
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bind *:443
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mode tcp
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option tcplog
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timeout client 1m
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option log-health-checks
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option redispatch
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log global
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timeout connect 10s
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timeout server 1m
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{% for host in groups['worker'] %}
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server server-{{hostvars[host].ansible_nodename}} {{ hostvars[host].wg_ip }}:30143 check
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{% endfor %}
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@ -0,0 +1,24 @@
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[Interface]
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PrivateKey = {{ wg_secret_key }}
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ListenPort = 51820
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[Peer]
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Endpoint = {{ hostvars['cluster-master'].ansible_ssh_host }}:51820
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PublicKey = {{ hostvars['cluster-master'].wg_public_key }}
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AllowedIPs = {{ hostvars['cluster-master'].wg_ip }}/32
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[Peer]
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Endpoint = {{ hostvars['cluster-worker01'].ansible_ssh_host }}:51820
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PublicKey = {{ hostvars['cluster-worker01'].wg_public_key }}
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AllowedIPs = {{ hostvars['cluster-worker01'].wg_ip }}/32
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[Peer]
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Endpoint = {{ hostvars['cluster-worker02'].ansible_ssh_host }}:51820
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PublicKey = {{ hostvars['cluster-worker02'].wg_public_key }}
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AllowedIPs = {{ hostvars['cluster-worker02'].wg_ip }}/32
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[Peer]
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Endpoint = {{ hostvars['cluster-worker03'].ansible_ssh_host }}:51820
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PublicKey = {{ hostvars['cluster-worker03'].wg_public_key }}
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AllowedIPs = {{ hostvars['cluster-worker03'].wg_ip }}/32
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@ -0,0 +1,7 @@
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auto wg-k8s
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iface wg-k8s inet static
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address {{ wg_ip }}
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netmask 255.255.255.0
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pre-up ip link add $IFACE type wireguard
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pre-up wg setconf $IFACE /etc/wireguard/$IFACE.conf
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post-down ip link del $IFACE
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@ -0,0 +1,4 @@
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for i in $(cat inventory.yaml | grep ssh | cut -d= -f2)
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do
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ssh-keyscan $i >> ~/.ssh/known_hosts
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done
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