forked from k-space/kube
120 lines
3.7 KiB
YAML
120 lines
3.7 KiB
YAML
---
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- name: Reconfigure Kubernetes nodes
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hosts: kubernetes
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vars:
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KUBERNETES_VERSION: v1.27.16
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tasks:
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- name: Remove APT packages
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ansible.builtin.apt:
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name: "{{ item }}"
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state: absent
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loop:
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- kubelet
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- kubeadm
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- kubectl
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- name: Download kubectl
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ansible.builtin.get_url:
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url: "https://cdn.dl.k8s.io/release/{{ KUBERNETES_VERSION }}/bin/linux/{{ 'arm64' if ansible_architecture == 'aarch64' else 'amd64' }}/kubectl"
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dest: /usr/bin/kubectl
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mode: '0755'
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- name: Download kubeadm
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ansible.builtin.get_url:
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url: "https://cdn.dl.k8s.io/release/{{ KUBERNETES_VERSION }}/bin/linux/{{ 'arm64' if ansible_architecture == 'aarch64' else 'amd64' }}/kubeadm"
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dest: /usr/bin/kubeadm
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mode: '0755'
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- name: Download kubelet
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ansible.builtin.get_url:
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url: "https://cdn.dl.k8s.io/release/{{ KUBERNETES_VERSION }}/bin/linux/{{ 'arm64' if ansible_architecture == 'aarch64' else 'amd64' }}/kubelet"
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dest: /usr/bin/kubelet
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mode: '0755'
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- name: Create /etc/systemd/system/kubelet.service
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ansible.builtin.copy:
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content: |
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[Unit]
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Description=kubelet: The Kubernetes Node Agent
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Documentation=https://kubernetes.io/docs/home/
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Wants=network-online.target
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After=network-online.target
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[Service]
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ExecStart=/usr/local/bin/kubelet
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Restart=always
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StartLimitInterval=0
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RestartSec=10
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[Install]
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WantedBy=multi-user.target
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dest: /etc/systemd/system/kubelet.service
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- name: Reconfigure shutdownGracePeriod
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ansible.builtin.lineinfile:
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path: /var/lib/kubelet/config.yaml
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regexp: '^shutdownGracePeriod:'
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line: 'shutdownGracePeriod: 5m'
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- name: Reconfigure shutdownGracePeriodCriticalPods
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ansible.builtin.lineinfile:
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path: /var/lib/kubelet/config.yaml
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regexp: '^shutdownGracePeriodCriticalPods:'
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line: 'shutdownGracePeriodCriticalPods: 5m'
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- name: Work around unattended-upgrades
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ansible.builtin.lineinfile:
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path: /lib/systemd/logind.conf.d/unattended-upgrades-logind-maxdelay.conf
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regexp: '^InhibitDelayMaxSec='
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line: 'InhibitDelayMaxSec=5m0s'
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- name: Disable unneccesary services
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ignore_errors: true
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loop:
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- gdm3
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- snapd
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- bluetooth
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- multipathd
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service:
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name: "{{item}}"
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state: stopped
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enabled: no
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- name: Reset /etc/containers/registries.conf
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ansible.builtin.copy:
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content: "unqualified-search-registries = [\"docker.io\"]\n"
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dest: /etc/containers/registries.conf
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register: registries
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- name: Restart CRI-O
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service:
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name: cri-o
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state: restarted
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when: registries.changed
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- name: Reset /etc/modules
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ansible.builtin.copy:
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content: |
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overlay
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br_netfilter
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dest: /etc/modules
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register: kernel_modules
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- name: Load kernel modules
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ansible.builtin.shell: "cat /etc/modules | xargs -L 1 -t modprobe"
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when: kernel_modules.changed
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- name: Reset /etc/sysctl.d/99-k8s.conf
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ansible.builtin.copy:
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content: |
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net.ipv4.conf.all.accept_redirects = 0
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net.bridge.bridge-nf-call-iptables = 1
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net.ipv4.ip_forward = 1
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net.bridge.bridge-nf-call-ip6tables = 1
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vm.max_map_count = 524288
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fs.inotify.max_user_instances = 1280
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fs.inotify.max_user_watches = 655360
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dest: /etc/sysctl.d/99-k8s.conf
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register: sysctl
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- name: Reload sysctl config
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ansible.builtin.shell: "sysctl --system"
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when: sysctl.changed
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