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99.clean.yml
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99.clean.yml
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# WARNING: This playbook will erase the entire k8s-cluster, include PODs, ETCD data etc.
# Make sure you know what you are doing.
# to clean 'kube-node' nodes
- hosts:
- kube-master
- new-master
- kube-node
- new-node
tasks:
- name: stop and disable kube-node service
service: name={{ item }} state=stopped enabled=no
with_items:
- kubelet
- kube-proxy
ignore_errors: true
- name: umount kubelet filesystems
shell: "mount | grep '/var/lib/kubelet'| awk '{print $3}'|xargs umount"
ignore_errors: true
- name: remove files and dirs of 'kube-node' nodes
file: name={{ item }} state=absent
with_items:
- "/var/lib/kubelet/"
- "/var/lib/kube-proxy/"
- "/etc/systemd/system/kubelet.service"
- "/etc/systemd/system/kube-proxy.service"
- "/opt/kube/kube-system/"
# to clean 'kube-master' nodes
- hosts:
- kube-master
- new-master
tasks:
- name: stop and disable kube-master service
service: name={{ item }} state=stopped enabled=no
with_items:
- kube-apiserver
- kube-controller-manager
- kube-scheduler
ignore_errors: true
- name: remove files and dirs of 'kube-master' nodes
file: name={{ item }} state=absent
with_items:
- "/var/run/kubernetes"
- "/etc/systemd/system/kube-apiserver.service"
- "/etc/systemd/system/kube-controller-manager.service"
- "/etc/systemd/system/kube-scheduler.service"
# to clean docker service and networking
- hosts:
- kube-master
- new-master
- kube-node
- new-node
tasks:
- name: clean 'kube-router' stuff
shell: "{{ bin_dir }}/docker run --privileged --net=host cloudnativelabs/kube-router --cleanup-config"
ignore_errors: true
when: "CLUSTER_NETWORK == 'kube-router'"
- name: stop and disable docker service
service:
name: docker
state: stopped
enabled: no
ignore_errors: true
# as k8s-network-plugins use host-network, '/var/run/docker/netns/default' must be umounted
- name: unmount docker filesystem-1
mount: path=/var/run/docker/netns/default state=unmounted
- name: unmount docker filesystem-2
mount: path=/var/lib/docker/overlay state=unmounted
- name: remove files and dirs
file: name={{ item }} state=absent
with_items:
- "/etc/cni/"
- "/root/.kube/"
- "/run/flannel/"
- "/etc/calico/"
- "/var/run/calico/"
- "/var/lib/calico/"
- "/var/log/calico/"
- "/etc/cilium/"
- "/var/run/cilium/"
- "/sys/fs/bpf/tc/"
- "/var/lib/cni/"
- "/var/lib/docker/"
- "/var/lib/kube-router/"
- "/var/run/docker/"
- "/etc/systemd/system/calico-node.service"
- "/etc/systemd/system/docker.service"
- "/etc/systemd/system/docker.service.requires/"
- "/opt/kube/kube-system/"
- "/etc/bash_completion.d/docker"
ignore_errors: true
- name: cleanup iptables
shell: "iptables -F && iptables -X \
&& iptables -F -t nat && iptables -X -t nat \
&& iptables -F -t raw && iptables -X -t raw \
&& iptables -F -t mangle && iptables -X -t mangle"
- name: cleanup networks
shell: "ip link del docker0; \
ip link del tunl0; \
ip link del flannel.1; \
ip link del cni0; \
ip link del mynet0; \
ip link del kube-bridge; \
ip link del dummy0; \
ip link del kube-ipvs0; \
ip link del cilium_net; \
ip link del cilium_vxlan; \
systemctl restart networking; \
systemctl restart network"
ignore_errors: true
- name: cleanup 'calico' routes
shell: "for rt in `ip route|grep bird|sed 's/blackhole//'|awk '{print $1}'`;do ip route del $rt;done;"
when: "CLUSTER_NETWORK == 'calico'"
ignore_errors: true
# to clean 'etcd' nodes
- hosts: etcd
tasks:
- name: stop and disable etcd service
service:
name: etcd
state: stopped
enabled: no
ignore_errors: true
- name: remove files and dirs
file: name={{ item }} state=absent
with_items:
- "/var/lib/etcd"
- "/etc/etcd/"
- "/backup/k8s"
- "/etc/systemd/system/etcd.service"
# to clean 'lb' nodes
- hosts: lb
tasks:
- name: stop keepalived service
shell: systemctl disable keepalived && systemctl stop keepalived
ignore_errors: true
- name: stop haproxy service
shell: systemctl disable haproxy && systemctl stop haproxy
ignore_errors: true
- name: remove files and dirs
file: name={{ item }} state=absent
with_items:
- "/etc/haproxy"
- "/etc/keepalived"
# to clean ntp, certs and keys, env path
- hosts:
- kube-master
- new-master
- kube-node
- new-node
- deploy
- etcd
- lb
tasks:
- name: stop and disable chrony
service: name={{ item }} state=stopped enabled=no
with_items:
- chrony
- chronyd
ignore_errors: true
tags: rm_ntp
- name: clean certs and keys
file: name={{ item }} state=absent
with_items:
- "/etc/kubernetes/"
- "{{ ca_dir }}"
- "/root/.kube/"
- "/etc/docker/"
- name: clean 'ENV PATH'
lineinfile:
dest: ~/.bashrc
state: absent
regexp: '{{ item }}'
with_items:
- 'kubeasz'
- 'helm'
- 'kubectl completion'