c1bc4615fe
The number of pods on a given node is determined by the --max-pods=k directive. When the address space is exhausted, no more pods can be scheduled even if from the --max-pods-perspective, the node still has capacity. The special case that a pod is scheduled and uses the node IP in the host network namespace is too "soft" to derive a guarantee. Comparing kubelet_max_pods with kube_network_node_prefix when given allows to assert that pod limits match the CIDR address space.
144 lines
5.1 KiB
YAML
144 lines
5.1 KiB
YAML
---
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# Valid options: docker (default), rkt, or host
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kubelet_deployment_type: host
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# change to 0.0.0.0 to enable insecure access from anywhere (not recommended)
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kube_apiserver_insecure_bind_address: 127.0.0.1
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# advertised host IP for kubelet. This affects network plugin config. Take caution
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kubelet_address: "{{ ip | default(ansible_default_ipv4['address']) }}"
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# bind address for kubelet. Set to 0.0.0.0 to listen on all interfaces
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kubelet_bind_address: "{{ ip | default('0.0.0.0') }}"
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# resolv.conf to base dns config
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kube_resolv_conf: "/etc/resolv.conf"
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# Can be ipvs, iptables
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kube_proxy_mode: iptables
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# If using the pure iptables proxy, SNAT everything. Note that it breaks any
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# policy engine.
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kube_proxy_masquerade_all: false
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# These options reflect limitations of running kubelet in a container.
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# Modify at your own risk
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kubelet_enable_cri: true
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kubelet_cgroups_per_qos: true
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# Set to empty to avoid cgroup creation
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kubelet_enforce_node_allocatable: "\"\""
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# Set false to enable sharing a pid namespace between containers in a pod.
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# Note that PID namespace sharing requires docker >= 1.13.1.
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kubelet_disable_shared_pid: true
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### fail with swap on (default true)
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kubelet_fail_swap_on: true
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# Reserve this space for kube resources
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kube_memory_reserved: 256M
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kube_cpu_reserved: 100m
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# Reservation for master hosts
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kube_master_memory_reserved: 512M
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kube_master_cpu_reserved: 200m
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kubelet_status_update_frequency: 10s
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# Limits for kube components and nginx load balancer app
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kube_proxy_memory_limit: 2000M
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kube_proxy_cpu_limit: 500m
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kube_proxy_memory_requests: 64M
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kube_proxy_cpu_requests: 150m
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nginx_memory_limit: 512M
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nginx_cpu_limit: 300m
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nginx_memory_requests: 32M
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nginx_cpu_requests: 25m
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# kube_api_runtime_config:
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# - extensions/v1beta1/daemonsets=true
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# - extensions/v1beta1/deployments=true
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nginx_image_repo: nginx
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nginx_image_tag: 1.13
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etcd_config_dir: /etc/ssl/etcd
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kubelet_flexvolumes_plugins_dir: /var/lib/kubelet/volume-plugins
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# A port range to reserve for services with NodePort visibility.
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# Inclusive at both ends of the range.
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kube_apiserver_node_port_range: "30000-32767"
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kubelet_load_modules: false
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# Configure the amount of pods able to run on single node
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# default is equal to application default
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kubelet_max_pods: 110
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## Support custom flags to be passed to kubelet
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kubelet_custom_flags: []
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# This setting is used for rkt based kubelet for deploying hyperkube
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# from a docker based registry ( controls --insecure and docker:// )
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## Empty vaule for quay.io containers
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## docker for docker registry containers
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kube_hyperkube_image_repo: ""
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# If non-empty, will use this string as identification instead of the actual hostname
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kube_override_hostname: >-
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{%- if cloud_provider is defined and cloud_provider in [ 'aws' ] -%}
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{%- else -%}
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{{ inventory_hostname }}
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{%- endif -%}
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# cAdvisor port
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kube_cadvisor_port: 0
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# The read-only port for the Kubelet to serve on with no authentication/authorization.
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kube_read_only_port: 0
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# sysctl_file_path to add sysctl conf to
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sysctl_file_path: "/etc/sysctl.d/99-sysctl.conf"
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# For the openstack integration kubelet will need credentials to access
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# openstack apis like nova and cinder. Per default this values will be
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# read from the environment.
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openstack_auth_url: "{{ lookup('env','OS_AUTH_URL') }}"
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openstack_username: "{{ lookup('env','OS_USERNAME') }}"
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openstack_password: "{{ lookup('env','OS_PASSWORD') }}"
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openstack_region: "{{ lookup('env','OS_REGION_NAME') }}"
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openstack_tenant_id: "{{ lookup('env','OS_TENANT_ID')| default(lookup('env','OS_PROJECT_ID')|default(lookup('env','OS_PROJECT_NAME'),true)) }}"
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openstack_tenant_name: "{{ lookup('env','OS_TENANT_NAME') }}"
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openstack_domain_name: "{{ lookup('env','OS_USER_DOMAIN_NAME') }}"
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openstack_domain_id: "{{ lookup('env','OS_USER_DOMAIN_ID') }}"
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# For the vsphere integration, kubelet will need credentials to access
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# vsphere apis
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# Documentation regarding these values can be found
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# https://github.com/kubernetes/kubernetes/blob/master/pkg/cloudprovider/providers/vsphere/vsphere.go#L105
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vsphere_vcenter_ip: "{{ lookup('env', 'VSPHERE_VCENTER') }}"
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vsphere_vcenter_port: "{{ lookup('env', 'VSPHERE_VCENTER_PORT') }}"
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vsphere_user: "{{ lookup('env', 'VSPHERE_USER') }}"
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vsphere_password: "{{ lookup('env', 'VSPHERE_PASSWORD') }}"
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vsphere_datacenter: "{{ lookup('env', 'VSPHERE_DATACENTER') }}"
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vsphere_datastore: "{{ lookup('env', 'VSPHERE_DATASTORE') }}"
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vsphere_working_dir: "{{ lookup('env', 'VSPHERE_WORKING_DIR') }}"
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vsphere_insecure: "{{ lookup('env', 'VSPHERE_INSECURE') }}"
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vsphere_resource_pool: "{{ lookup('env', 'VSPHERE_RESOURCE_POOL') }}"
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vsphere_scsi_controller_type: pvscsi
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# vsphere_public_network is name of the network the VMs are joined to
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vsphere_public_network: "{{ lookup('env', 'VSPHERE_PUBLIC_NETWORK')|default('') }}"
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## When azure is used, you need to also set the following variables.
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## see docs/azure.md for details on how to get these values
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# azure_tenant_id:
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# azure_subscription_id:
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# azure_aad_client_id:
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# azure_aad_client_secret:
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# azure_resource_group:
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# azure_location:
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# azure_subnet_name:
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# azure_security_group_name:
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# azure_vnet_name:
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# azure_route_table_name:
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