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hardening: Add `SeccompDefault` admission plugin for kubelet (#9074) 

* docs(hardening): add SeccompDefault admission plugin to kubelet feature gates

* fix(kubelet-config): enable config through kubelet_feature_gates

* feat(kubelet): add kubelet_seccomp_default variable
pull/9101/head
Alessio Greggi 2022-07-19 09:50:07 +02:00 committed by GitHub
parent 98c194735c
commit 3ce5458f32
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2 changed files with 7 additions and 3 deletions
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3
docs/hardening.md
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@ -83,7 +83,8 @@ kubelet_event_record_qps: 1
kubelet_rotate_certificates: true kubelet_rotate_certificates: true
kubelet_streaming_connection_idle_timeout: "5m" kubelet_streaming_connection_idle_timeout: "5m"
kubelet_make_iptables_util_chains: true kubelet_make_iptables_util_chains: true
kubelet_feature_gates: ["RotateKubeletServerCertificate=true"] kubelet_feature_gates: ["RotateKubeletServerCertificate=true","SeccompDefault=true"]
kubelet_seccomp_default: true
# additional configurations # additional configurations
kube_owner: root kube_owner: root

7
roles/kubernetes/node/templates/kubelet-config.v1beta1.yaml.j2
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@ -116,9 +116,9 @@ resolvConf: "{{ kube_resolv_conf }}"
{% if inventory_hostname in groups['kube_node'] and kubelet_node_config_extra_args %} {% if inventory_hostname in groups['kube_node'] and kubelet_node_config_extra_args %}
{{ kubelet_node_config_extra_args | to_nice_yaml(indent=2) }} {{ kubelet_node_config_extra_args | to_nice_yaml(indent=2) }}
{% endif %} {% endif %}
{% if kube_feature_gates %} {% if kubelet_feature_gates or kube_feature_gates %}
featureGates: featureGates:
{% for feature in kube_feature_gates %} {% for feature in (kubelet_feature_gates | default(kube_feature_gates, true)) %}
{{ feature|replace("=", ": ") }} {{ feature|replace("=", ": ") }}
{% endfor %} {% endfor %}
{% endif %} {% endif %}
@ -146,3 +146,6 @@ streamingConnectionIdleTimeout: {{ kubelet_streaming_connection_idle_timeout }}
{% if kubelet_make_iptables_util_chains is defined %} {% if kubelet_make_iptables_util_chains is defined %}
makeIPTablesUtilChains: {{ kubelet_make_iptables_util_chains | bool }} makeIPTablesUtilChains: {{ kubelet_make_iptables_util_chains | bool }}
{% endif %} {% endif %}
{% if kubelet_seccomp_default is defined %}
seccompDefault: {{ kubelet_seccomp_default | bool }}
{% endif %}