feat: Buncha shit

This commit is contained in:
Lino Silva
2023-03-25 23:54:00 +00:00
parent fe17c6eb69
commit a43c1593d9
88 changed files with 354 additions and 52 deletions
@@ -0,0 +1,12 @@
---
ansible_user: root
server_init_args: >-
{% if groups['master'] | length > 1 %}
{% if ansible_hostname == hostvars[groups['master'][0]]['ansible_hostname'] %}
--cluster-init
{% else %}
--server https://{{ hostvars[groups['master'][0]].ansible_host }}:6443
{% endif %}
--token {{ k3s_token }}
{% endif %}
{{ extra_server_args | default('') }}
@@ -0,0 +1,28 @@
---
# Download logs of k3s-init.service from the nodes to localhost.
# Note that log_destination must be set.
- name: Fetch k3s-init.service logs
ansible.builtin.command:
cmd: journalctl --all --unit=k3s-init.service
changed_when: false
register: k3s_init_log
- name: Create {{ log_destination }}
delegate_to: localhost
run_once: true
become: false
ansible.builtin.file:
path: "{{ log_destination }}"
state: directory
mode: "0755"
- name: Store logs to {{ log_destination }}
delegate_to: localhost
become: false
ansible.builtin.template:
src: content.j2
dest: "{{ log_destination }}/k3s-init@{{ ansible_hostname }}.log"
mode: 0644
vars:
content: "{{ k3s_init_log.stdout }}"
+200
View File
@@ -0,0 +1,200 @@
---
- name: Clean previous runs of k3s-init
systemd:
name: k3s-init
state: stopped
failed_when: false
- name: Clean previous runs of k3s-init
command: systemctl reset-failed k3s-init
failed_when: false
changed_when: false
args:
warn: false # The ansible systemd module does not support reset-failed
- name: Create manifests directory on first master
file:
path: /var/lib/rancher/k3s/server/manifests
state: directory
owner: root
group: root
mode: 0644
when: ansible_hostname == hostvars[groups['master'][0]]['ansible_hostname']
- name: Copy vip rbac manifest to first master
template:
src: "vip.rbac.yaml.j2"
dest: "/var/lib/rancher/k3s/server/manifests/vip-rbac.yaml"
owner: root
group: root
mode: 0644
when: ansible_hostname == hostvars[groups['master'][0]]['ansible_hostname']
- name: Copy vip manifest to first master
template:
src: "vip.yaml.j2"
dest: "/var/lib/rancher/k3s/server/manifests/vip.yaml"
owner: root
group: root
mode: 0644
when: ansible_hostname == hostvars[groups['master'][0]]['ansible_hostname']
# these will be copied and installed now, then tested later and apply config
- name: Copy metallb namespace to first master
template:
src: "metallb.namespace.j2"
dest: "/var/lib/rancher/k3s/server/manifests/metallb-namespace.yaml"
owner: root
group: root
mode: 0644
when: ansible_hostname == hostvars[groups['master'][0]]['ansible_hostname']
- name: Copy metallb namespace to first master
template:
src: "metallb.crds.j2"
dest: "/var/lib/rancher/k3s/server/manifests/metallb-crds.yaml"
owner: root
group: root
mode: 0644
when: ansible_hostname == hostvars[groups['master'][0]]['ansible_hostname']
- name: Init cluster inside the transient k3s-init service
command:
cmd: "systemd-run -p RestartSec=2 \
-p Restart=on-failure \
--unit=k3s-init \
k3s server {{ server_init_args }}"
creates: "{{ systemd_dir }}/k3s.service"
args:
warn: false # The ansible systemd module does not support transient units
- name: Verification
block:
- name: Verify that all nodes actually joined (check k3s-init.service if this fails)
command:
cmd: k3s kubectl get nodes -l "node-role.kubernetes.io/master=true" -o=jsonpath="{.items[*].metadata.name}"
register: nodes
until: nodes.rc == 0 and (nodes.stdout.split() | length) == (groups['master'] | length)
retries: "{{ retry_count | default(40) }}"
delay: 20
changed_when: false
always:
- name: Save logs of k3s-init.service
include_tasks: fetch_k3s_init_logs.yml
when: log_destination
vars:
log_destination: >-
{{ lookup('ansible.builtin.env', 'ANSIBLE_K3S_LOG_DIR', default=True) }}
- name: Kill the temporary service used for initialization
systemd:
name: k3s-init
state: stopped
failed_when: false
when: not ansible_check_mode
- name: Copy K3s service file
register: k3s_service
template:
src: "k3s.service.j2"
dest: "{{ systemd_dir }}/k3s.service"
owner: root
group: root
mode: 0644
- name: Enable and check K3s service
systemd:
name: k3s
daemon_reload: yes
state: restarted
enabled: yes
- name: Wait for node-token
wait_for:
path: /var/lib/rancher/k3s/server/node-token
- name: Register node-token file access mode
stat:
path: /var/lib/rancher/k3s/server
register: p
- name: Change file access node-token
file:
path: /var/lib/rancher/k3s/server
mode: "g+rx,o+rx"
- name: Read node-token from master
slurp:
src: /var/lib/rancher/k3s/server/node-token
register: node_token
- name: Store Master node-token
set_fact:
token: "{{ node_token.content | b64decode | regex_replace('\n', '') }}"
- name: Restore node-token file access
file:
path: /var/lib/rancher/k3s/server
mode: "{{ p.stat.mode }}"
- name: Create directory .kube
file:
path: ~{{ ansible_user }}/.kube
state: directory
owner: "{{ ansible_user }}"
mode: "u=rwx,g=rx,o="
- name: Copy config file to user home directory
copy:
src: /etc/rancher/k3s/k3s.yaml
dest: ~{{ ansible_user }}/.kube/config
remote_src: yes
owner: "{{ ansible_user }}"
mode: "u=rw,g=,o="
- name: Configure kubectl cluster to {{ endpoint_url }}
command: >-
k3s kubectl config set-cluster default
--server={{ endpoint_url }}
--kubeconfig ~{{ ansible_user }}/.kube/config
changed_when: true
vars:
endpoint_url: >-
https://{{ apiserver_endpoint | ansible.utils.ipwrap }}:6443
# Deactivated linter rules:
# - jinja[invalid]: As of version 6.6.0, ansible-lint complains that the input to ipwrap
# would be undefined. This will not be the case during playbook execution.
# noqa jinja[invalid]
- name: Create kubectl symlink
file:
src: /usr/local/bin/k3s
dest: /usr/local/bin/kubectl
state: link
- name: Create crictl symlink
file:
src: /usr/local/bin/k3s
dest: /usr/local/bin/crictl
state: link
- name: Get contents of manifests folder
find:
paths: /var/lib/rancher/k3s/server/manifests
file_type: file
register: k3s_server_manifests
- name: Get sub dirs of manifests folder
find:
paths: /var/lib/rancher/k3s/server/manifests
file_type: directory
register: k3s_server_manifests_directories
- name: Remove manifests and folders that are only needed for bootstrapping cluster so k3s doesn't auto apply on start
file:
path: "{{ item.path }}"
state: absent
with_items:
- "{{ k3s_server_manifests.files }}"
- "{{ k3s_server_manifests_directories.files }}"
loop_control:
label: "{{ item.path }}"
@@ -0,0 +1,5 @@
{#
This is a really simple template that just outputs the
value of the "content" variable.
#}
{{ content }}
@@ -0,0 +1,24 @@
[Unit]
Description=Lightweight Kubernetes
Documentation=https://k3s.io
After=network-online.target
[Service]
Type=notify
ExecStartPre=-/sbin/modprobe br_netfilter
ExecStartPre=-/sbin/modprobe overlay
ExecStart=/usr/local/bin/k3s server {{ extra_server_args | default("") }}
KillMode=process
Delegate=yes
# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=1048576
LimitNPROC=infinity
LimitCORE=infinity
TasksMax=infinity
TimeoutStartSec=0
Restart=always
RestartSec=5s
[Install]
WantedBy=multi-user.target
File diff suppressed because it is too large Load Diff
@@ -0,0 +1,6 @@
apiVersion: v1
kind: Namespace
metadata:
name: metallb-system
labels:
app: metallb
@@ -0,0 +1,32 @@
apiVersion: v1
kind: ServiceAccount
metadata:
name: kube-vip
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
annotations:
rbac.authorization.kubernetes.io/autoupdate: "true"
name: system:kube-vip-role
rules:
- apiGroups: [""]
resources: ["services", "services/status", "nodes", "endpoints"]
verbs: ["list","get","watch", "update"]
- apiGroups: ["coordination.k8s.io"]
resources: ["leases"]
verbs: ["list", "get", "watch", "update", "create"]
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: system:kube-vip-binding
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:kube-vip-role
subjects:
- kind: ServiceAccount
name: kube-vip
namespace: kube-system
@@ -0,0 +1,77 @@
apiVersion: apps/v1
kind: DaemonSet
metadata:
name: kube-vip-ds
namespace: kube-system
spec:
selector:
matchLabels:
name: kube-vip-ds
template:
metadata:
labels:
name: kube-vip-ds
spec:
affinity:
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: node-role.kubernetes.io/master
operator: Exists
- matchExpressions:
- key: node-role.kubernetes.io/control-plane
operator: Exists
containers:
- args:
- manager
env:
- name: vip_arp
value: "true"
- name: port
value: "6443"
- name: vip_interface
value: {{ flannel_iface }}
- name: vip_cidr
value: "{{ apiserver_endpoint | ansible.utils.ipsubnet | ansible.utils.ipaddr('prefix') }}"
- name: cp_enable
value: "true"
- name: cp_namespace
value: kube-system
- name: vip_ddns
value: "false"
- name: svc_enable
value: "false"
- name: vip_leaderelection
value: "true"
- name: vip_leaseduration
value: "15"
- name: vip_renewdeadline
value: "10"
- name: vip_retryperiod
value: "2"
- name: address
value: {{ apiserver_endpoint }}
image: ghcr.io/kube-vip/kube-vip:{{ kube_vip_tag_version }}
imagePullPolicy: Always
name: kube-vip
resources: {}
securityContext:
capabilities:
add:
- NET_ADMIN
- NET_RAW
- SYS_TIME
hostNetwork: true
serviceAccountName: kube-vip
tolerations:
- effect: NoSchedule
operator: Exists
- effect: NoExecute
operator: Exists
updateStrategy: {}
status:
currentNumberScheduled: 0
desiredNumberScheduled: 0
numberMisscheduled: 0
numberReady: 0