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Merge pull request #10643 from VannTen/cleanup/k8s_node_templates

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Refactor kubernetes/node templates
This commit is contained in:
Kubernetes Prow Robot
2024-09-23 14:16:00 +01:00
committed by GitHub
parent e9d406ed08 fe60832a02
commit 03a055c383
6 changed files with 26 additions and 84 deletions
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33
roles/kubernetes/node/defaults/main.yml
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@@ -36,31 +36,20 @@ kubelet_secure_addresses: "localhost link-local {{ kube_pods_subnet }} {{ kube_n
# Reserve this space for kube resources
# Whether to run kubelet and container-engine daemons in a dedicated cgroup. (Not required for resource reservations).
kube_reserved: false
kube_reserved_cgroups_for_service_slice: kube.slice
kube_reserved_cgroups: "/{{ kube_reserved_cgroups_for_service_slice }}"
kube_memory_reserved: 256Mi
kube_cpu_reserved: 100m
# kube_ephemeral_storage_reserved: 2Gi
# kube_pid_reserved: "1000"
# Reservation for control plane hosts
kube_master_memory_reserved: 512Mi
kube_master_cpu_reserved: 200m
# kube_master_ephemeral_storage_reserved: 2Gi
# kube_master_pid_reserved: "1000"
kube_memory_reserved: "256Mi"
kube_cpu_reserved: "100m"
kube_ephemeral_storage_reserved: "500Mi"
kube_pid_reserved: "1000"
# Set to true to reserve resources for system daemons
system_reserved: false
system_reserved_cgroups_for_service_slice: system.slice
system_reserved_cgroups: "/{{ system_reserved_cgroups_for_service_slice }}"
system_memory_reserved: 512Mi
system_cpu_reserved: 500m
# system_ephemeral_storage_reserved: 2Gi
# system_pid_reserved: "1000"
# Reservation for control plane hosts
system_master_memory_reserved: 256Mi
system_master_cpu_reserved: 250m
# system_master_ephemeral_storage_reserved: 2Gi
# system_master_pid_reserved: "1000"
system_memory_reserved: "512Mi"
system_cpu_reserved: "500m"
system_ephemeral_storage_reserved: "500Mi"
system_pid_reserved: 1000
## Eviction Thresholds to avoid system OOMs
# https://kubernetes.io/docs/tasks/administer-cluster/reserve-compute-resources/#eviction-thresholds
@@ -136,9 +125,6 @@ kubelet_config_extra_args_cgroupfs:
systemCgroups: /system.slice
cgroupRoot: /
## Support parameters to be passed to kubelet via kubelet-config.yaml only on nodes, not control plane nodes
kubelet_node_config_extra_args: {}
# Maximum number of container log files that can be present for a container.
kubelet_logfiles_max_nr: 5
@@ -148,9 +134,6 @@ kubelet_logfiles_max_size: 10Mi
## Support custom flags to be passed to kubelet
kubelet_custom_flags: []
## Support custom flags to be passed to kubelet only on nodes, not control plane nodes
kubelet_node_custom_flags: []
# If non-empty, will use this string as identification instead of the actual hostname
kube_override_hostname: >-
{%- if cloud_provider is defined and cloud_provider in ['aws'] -%}

61
roles/kubernetes/node/templates/kubelet-config.v1beta1.yaml.j2
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@@ -61,56 +61,16 @@ clusterDNS:
- {{ dns_address }}
{% endfor %}
{# Node reserved CPU/memory #}
{% if kube_reserved | bool %}
kubeReservedCgroup: {{ kube_reserved_cgroups }}
{% for scope in "kube", "system" %}
{% if lookup('ansible.builtin.vars', scope + "_reserved") | bool %}
{{ scope }}ReservedCgroup: {{ lookup('ansible.builtin.vars', scope + '_reserved_cgroups') }}
{% endif %}
kubeReserved:
{% if 'kube_control_plane' in group_names %}
cpu: "{{ kube_master_cpu_reserved }}"
memory: {{ kube_master_memory_reserved }}
{% if kube_master_ephemeral_storage_reserved is defined %}
ephemeral-storage: {{ kube_master_ephemeral_storage_reserved }}
{% endif %}
{% if kube_master_pid_reserved is defined %}
pid: "{{ kube_master_pid_reserved }}"
{% endif %}
{% else %}
cpu: "{{ kube_cpu_reserved }}"
memory: {{ kube_memory_reserved }}
{% if kube_ephemeral_storage_reserved is defined %}
ephemeral-storage: {{ kube_ephemeral_storage_reserved }}
{% endif %}
{% if kube_pid_reserved is defined %}
pid: "{{ kube_pid_reserved }}"
{% endif %}
{% endif %}
{% if system_reserved | bool %}
systemReservedCgroup: {{ system_reserved_cgroups }}
systemReserved:
{% if 'kube_control_plane' in group_names %}
cpu: "{{ system_master_cpu_reserved }}"
memory: {{ system_master_memory_reserved }}
{% if system_master_ephemeral_storage_reserved is defined %}
ephemeral-storage: {{ system_master_ephemeral_storage_reserved }}
{% endif %}
{% if system_master_pid_reserved is defined %}
pid: "{{ system_master_pid_reserved }}"
{% endif %}
{% else %}
cpu: "{{ system_cpu_reserved }}"
memory: {{ system_memory_reserved }}
{% if system_ephemeral_storage_reserved is defined %}
ephemeral-storage: {{ system_ephemeral_storage_reserved }}
{% endif %}
{% if system_pid_reserved is defined %}
pid: "{{ system_pid_reserved }}"
{% endif %}
{% endif %}
{% endif %}
{% if ('kube_control_plane' in group_names) and (eviction_hard_control_plane is defined) and eviction_hard_control_plane %}
evictionHard:
{{ eviction_hard_control_plane | to_nice_yaml(indent=2) | indent(2) }}
{% elif ('kube_control_plane' not in group_names) and (eviction_hard is defined) and eviction_hard %}
{{ scope }}Reserved:
{% for resource in "cpu", "memory", "ephemeral-storage", "pid" %}
{{ resource }}: "{{ lookup('ansible.builtin.vars', scope + '_' ~ (resource | replace('-', '_')) + '_reserved') }}"
{% endfor %}
{% endfor %}
{% if eviction_hard is defined and eviction_hard %}
evictionHard:
{{ eviction_hard | to_nice_yaml(indent=2) | indent(2) }}
{% endif %}
@@ -118,9 +78,6 @@ resolvConf: "{{ kube_resolv_conf }}"
{% if kubelet_config_extra_args %}
{{ kubelet_config_extra_args | to_nice_yaml(indent=2) }}
{% endif %}
{% if inventory_hostname in groups['kube_node'] and kubelet_node_config_extra_args %}
{{ kubelet_node_config_extra_args | to_nice_yaml(indent=2) }}
{% endif %}
{% if kubelet_feature_gates or kube_feature_gates %}
featureGates:
{% for feature in (kubelet_feature_gates | default(kube_feature_gates, true)) %}

2
roles/kubernetes/node/templates/kubelet.env.v1beta1.j2
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@@ -14,7 +14,7 @@ KUBELET_HOSTNAME="--hostname-override={{ kube_override_hostname }}"
--runtime-cgroups={{ kubelet_runtime_cgroups }} \
{% endset %}
KUBELET_ARGS="{{ kubelet_args_base }} {% if kubelet_custom_flags is string %} {{kubelet_custom_flags}} {% else %}{% for flag in kubelet_custom_flags %} {{flag}} {% endfor %}{% endif %}{% if inventory_hostname in groups['kube_node'] %}{% if kubelet_node_custom_flags is string %} {{kubelet_node_custom_flags}} {% else %}{% for flag in kubelet_node_custom_flags %} {{flag}} {% endfor %}{% endif %}{% endif %}"
KUBELET_ARGS="{{ kubelet_args_base }} {{ kubelet_custom_flags | join(' ') }}"
{% if kubelet_flexvolumes_plugins_dir is defined %}
KUBELET_VOLUME_PLUGIN="--volume-plugin-dir={{ kubelet_flexvolumes_plugins_dir }}"
{% endif %}