ansible-role-k3s/templates/k3s.service.j2

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[Unit]
Description=Lightweight Kubernetes
Documentation=https://k3s.io
{% for requires_unit in k3s_service_requires %}
Requires={{ requires_unit }}
{% endfor %}
Wants=network-online.target
{% for wants_unit in k3s_service_wants %}
Wants={{ wants_unit }}
{% endfor %}
{% for before_unit in k3s_service_before %}
Before={{ before_unit }}
{% endfor %}
After=network-online.target
{% for after_unit in k3s_service_after %}
After={{ after_unit }}
{% endfor %}
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[Service]
Type={{ 'notify' if k3s_control_node else 'exec' }}
{% if k3s_service_env_vars is defined and k3s_service_env_vars is iterable %}
{% for env_var in k3s_service_env_vars %}
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Environment={{ env_var }}={{ k3s_service_env_vars[env_var] }}
{% endfor %}
{% endif %}
{% if k3s_service_env_file is defined and k3s_service_env_file %}
EnvironmentFile={{ k3s_service_env_file }}
{% endif %}
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ExecStartPre=-/sbin/modprobe br_netfilter
ExecStartPre=-/sbin/modprobe overlay
{% filter regex_replace('\s+', ' ') %}
{% filter replace('\n', ' ') %}
ExecStart={{ k3s_install_dir }}/k3s
{% if k3s_debug is defined and k3s_debug %}
--debug
{% endif %}
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{% if k3s_control_node %}
server
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{% if (k3s_etcd_datastore is defined and k3s_etcd_datastore) and (k3s_primary_control_node is not defined or not k3s_primary_control_node) and k3s_controller_list | length > 1 %}
fix: restore clustering feature For some weird reason, string booleans were set on `k3s_control_node` and `k3s_primary_control_node`, making their behavior non-obvious (for python `bool("false") == True`). This fixes that problem, and BTW restores the ability to create clusters, which got lost with this bug. After running the role against a cluster, see: ```sh ❯ ansible -i inventories/testing.yaml k8s_node -m command -ba 'kubectl get node' vm0 | CHANGED | rc=0 >> NAME STATUS ROLES AGE VERSION vm0 Ready control-plane,etcd,master 9m19s v1.21.2+k3s1 vm2 | CHANGED | rc=0 >> NAME STATUS ROLES AGE VERSION vm2 Ready control-plane,etcd,master 9m22s v1.21.2+k3s1 vm1 | CHANGED | rc=0 >> NAME STATUS ROLES AGE VERSION vm1 Ready control-plane,etcd,master 9m22s v1.21.2+k3s1 ``` Now, after the patch: ```sh ❯ ansible -i inventories/testing.yaml k8s_node -m command -ba 'kubectl get node' vm0 | CHANGED | rc=0 >> NAME STATUS ROLES AGE VERSION vm0 Ready control-plane,etcd,master 2m2s v1.21.2+k3s1 vm1 Ready control-plane,etcd,master 58s v1.21.2+k3s1 vm2 Ready control-plane,etcd,master 80s v1.21.2+k3s1 vm1 | CHANGED | rc=0 >> NAME STATUS ROLES AGE VERSION vm0 Ready control-plane,etcd,master 2m2s v1.21.2+k3s1 vm1 Ready control-plane,etcd,master 58s v1.21.2+k3s1 vm2 Ready control-plane,etcd,master 80s v1.21.2+k3s1 vm2 | CHANGED | rc=0 >> NAME STATUS ROLES AGE VERSION vm0 Ready control-plane,etcd,master 2m2s v1.21.2+k3s1 vm1 Ready control-plane,etcd,master 58s v1.21.2+k3s1 vm2 Ready control-plane,etcd,master 80s v1.21.2+k3s1 ``` @Tecnativa TT2541
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--server https://{{ k3s_registration_address }}:{{ k3s_control_plane_port | default(6443) | string }}
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{% endif %}
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{% if k3s_server is defined %}
--config {{ k3s_config_file }}
{% endif %}
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{% if k3s_token_location %}
--token-file {{ k3s_token_location }}
{% endif %}
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{% else %}
agent
fix: restore clustering feature For some weird reason, string booleans were set on `k3s_control_node` and `k3s_primary_control_node`, making their behavior non-obvious (for python `bool("false") == True`). This fixes that problem, and BTW restores the ability to create clusters, which got lost with this bug. After running the role against a cluster, see: ```sh ❯ ansible -i inventories/testing.yaml k8s_node -m command -ba 'kubectl get node' vm0 | CHANGED | rc=0 >> NAME STATUS ROLES AGE VERSION vm0 Ready control-plane,etcd,master 9m19s v1.21.2+k3s1 vm2 | CHANGED | rc=0 >> NAME STATUS ROLES AGE VERSION vm2 Ready control-plane,etcd,master 9m22s v1.21.2+k3s1 vm1 | CHANGED | rc=0 >> NAME STATUS ROLES AGE VERSION vm1 Ready control-plane,etcd,master 9m22s v1.21.2+k3s1 ``` Now, after the patch: ```sh ❯ ansible -i inventories/testing.yaml k8s_node -m command -ba 'kubectl get node' vm0 | CHANGED | rc=0 >> NAME STATUS ROLES AGE VERSION vm0 Ready control-plane,etcd,master 2m2s v1.21.2+k3s1 vm1 Ready control-plane,etcd,master 58s v1.21.2+k3s1 vm2 Ready control-plane,etcd,master 80s v1.21.2+k3s1 vm1 | CHANGED | rc=0 >> NAME STATUS ROLES AGE VERSION vm0 Ready control-plane,etcd,master 2m2s v1.21.2+k3s1 vm1 Ready control-plane,etcd,master 58s v1.21.2+k3s1 vm2 Ready control-plane,etcd,master 80s v1.21.2+k3s1 vm2 | CHANGED | rc=0 >> NAME STATUS ROLES AGE VERSION vm0 Ready control-plane,etcd,master 2m2s v1.21.2+k3s1 vm1 Ready control-plane,etcd,master 58s v1.21.2+k3s1 vm2 Ready control-plane,etcd,master 80s v1.21.2+k3s1 ``` @Tecnativa TT2541
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--server https://{{ k3s_registration_address }}:{{ k3s_control_plane_port | default(6443) | string }}
--token-file {{ k3s_token_location }}
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{% if k3s_agent is defined %}
--config {{ k3s_config_file }}
{% endif %}
{% endif %}
{% endfilter %}
{% endfilter %}
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KillMode=process
Delegate=yes
LimitNOFILE=1048576
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LimitNPROC=infinity
LimitCORE=infinity
TasksMax=infinity
TimeoutStartSec=0
Restart=always
RestartSec=5s
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[Install]
WantedBy=multi-user.target