Knobby Kubernetes Worker

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• allow-privileged | string

  Default: true

  Allow privileged containers to run on worker nodes. Supported values are "true", "false", and "auto". If "true", kubelet will run in privileged mode by default. If "false", kubelet will never run in privileged mode. If "auto", kubelet will not run in privileged mode by default, but will switch to privileged mode if gpu hardware is detected. Pod security policies (PSP) should be used to restrict container privileges.

• apt-key-server | string

  Default: hkp://keyserver.ubuntu.com:80

  APT Key Server

• channel | string

  Default: 1.12/stable

  Snap channel to install Kubernetes worker services from

• cuda_repo | string

  Default: 10.0.130-1

  The cuda-repo package version to install.

• default-backend-image | string

  Default: auto

  Docker image to use for the default backend. Auto will select an image based on architecture.

• docker-ce-package | string

  Default: docker-ce

  The pinned version of docker-ce package installed with nvidia-docker.

• docker-logins | string

  Default: []

  Docker login credentials. Setting this config allows Kubelet to pull images from registries where auth is required. The value for this config must be a JSON array of credential objects, like this: [{"server": "my.registry", "username": "myUser", "password": "myPass"}]

• docker-opts | string

  Extra options to pass to the docker daemon. e.g. --insecure-registry

• docker_runtime | string

  Default: auto

  docker runtime to install valid values are "upstream" (docker PPA), "nvidia" (nvidia PPA), "apt" (ubuntu archive), or "auto" (nvidia PPA or ubuntu archive, based on your hardware)

• enable-cgroups | boolean

  Enable GRUB cgroup overrides cgroup_enable=memory swapaccount=1. WARNING changing this option will reboot the host - use with caution on production services

• http_proxy | string

  URL to use for HTTP_PROXY to be used by Docker. Useful in egress-filtered environments where a proxy is the only option for accessing the registry to pull images.

• https_proxy | string

  URL to use for HTTPS_PROXY to be used by Docker. Useful in egress-filtered environments where a proxy is the only option for accessing the registry to pull images.

• ingress | boolean

  Default: True

  Deploy the default http backend and ingress controller to handle ingress requests.

• ingress-ssl-chain-completion | boolean

  Enable chain completion for TLS certificates used by the nginx ingress controller. Set this to true if you would like the ingress controller to attempt auto-retrieval of intermediate certificates. The default (false) is recommended for all production kubernetes installations, and any environment which does not have outbound Internet access.

• kubelet-extra-args | string

  Space separated list of flags and key=value pairs that will be passed as arguments to kubelet. For example a value like this: runtime-config=batch/v2alpha1=true profiling=true will result in kube-apiserver being run with the following options: --runtime-config=batch/v2alpha1=true --profiling=true Note: As of Kubernetes 1.10.x, many of Kubelet's args have been deprecated, and can be set with kubelet-extra-config instead.

• kubelet-extra-config | string

  Default: {}

  Extra configuration to be passed to kubelet. Any values specified in this config will be merged into a KubeletConfiguration file that is passed to the kubelet service via the --config flag. This can be used to override values provided by the charm. Requires Kubernetes 1.10+. The value for this config must be a YAML mapping that can be safely merged with a KubeletConfiguration file. For example: {evictionHard: {memory.available: 200Mi}} For more information about KubeletConfiguration, see upstream docs: https://kubernetes.io/docs/tasks/administer-cluster/kubelet-config-file/

• labels | string

  Labels can be used to organize and to select subsets of nodes in the cluster. Declare node labels in key=value format, separated by spaces.

• nagios_context | string

  Default: juju

  Used by the nrpe subordinate charms. A string that will be prepended to instance name to set the host name in nagios. So for instance the hostname would be something like: juju-myservice-0 If you're running multiple environments with the same services in them this allows you to differentiate between them.

• nagios_servicegroups | string

  A comma-separated list of nagios servicegroups. If left empty, the nagios_context will be used as the servicegroup

• nginx-image | string

  Default: auto

  Docker image to use for the nginx ingress controller. Auto will select an image based on architecture.

• no_proxy | string

  Comma-separated list of destinations (either domain names or IP addresses) which should be accessed directly, rather than through the proxy defined in http_proxy or https_proxy. Must be less than 2023 characters long.

• nvidia-container-runtime-package | string

  Default: nvidia-container-runtime

  The pinned version of nvidia-container-runtime package.

• nvidia-docker-package | string

  Default: nvidia-docker2

  The pinned version of nvidia-docker2 package.

• proxy-extra-args | string

  Space separated list of flags and key=value pairs that will be passed as arguments to kube-proxy. For example a value like this: runtime-config=batch/v2alpha1=true profiling=true will result in kube-apiserver being run with the following options: --runtime-config=batch/v2alpha1=true --profiling=true

• require-manual-upgrade | boolean

  Default: True

  When true, worker services will not be upgraded until the user triggers it manually by running the upgrade action.

• snap_proxy | string

  HTTP/HTTPS web proxy for Snappy to use when accessing the snap store.

• snap_proxy_url | string

  The address of a Snap Store Proxy to use for snaps e.g. http://snap-proxy.example.com

• snapd_refresh | string

  Default: max

  How often snapd handles updates for installed snaps. Setting an empty string will check 4x per day. Set to "max" to delay the refresh as long as possible. You may also set a custom string as described in the 'refresh.timer' section here: https://forum.snapcraft.io/t/system-options/87