kubectl
kubectl controls the Kubernetes cluster manager.
Find more information at: https://kubernetes.io/docs/reference/kubectl/overview/
Basic Commands (Beginner):
create Create a resource from a file or from stdin.
expose Take a replication controller, service, deployment or pod and expose it as a new Kubernetes Service
run Run a particular image on the cluster
set Set specific features on objects
Basic Commands (Intermediate):
explain Documentation of resources
get Display one or many resources
edit Edit a resource on the server
delete Delete resources by filenames, stdin, resources and names, or by resources and label selector
Deploy Commands:
rollout Manage the rollout of a resource
scale Set a new size for a Deployment, ReplicaSet or Replication Controller
autoscale Auto-scale a Deployment, ReplicaSet, or ReplicationController
Cluster Management Commands:
certificate Modify certificate resources.
cluster-info Display cluster info
top Display Resource (CPU/Memory/Storage) usage.
cordon Mark node as unschedulable
uncordon Mark node as schedulable
drain Drain node in preparation for maintenance
taint Update the taints on one or more nodes
Troubleshooting and Debugging Commands:
describe Show details of a specific resource or group of resources
logs Print the logs for a container in a pod
attach Attach to a running container
exec Execute a command in a container
port-forward Forward one or more local ports to a pod
proxy Run a proxy to the Kubernetes API server
cp Copy files and directories to and from containers.
auth Inspect authorization
debug Create debugging sessions for troubleshooting workloads and nodes
Advanced Commands:
diff Diff live version against would-be applied version
apply Apply a configuration to a resource by filename or stdin
patch Update field(s) of a resource
replace Replace a resource by filename or stdin
wait Experimental: Wait for a specific condition on one or many resources.
kustomize Build a kustomization target from a directory or a remote url.
Settings Commands:
label Update the labels on a resource
annotate Update the annotations on a resource
completion Output shell completion code for the specified shell (bash or zsh)
Other Commands:
api-resources Print the supported API resources on the server
api-versions Print the supported API versions on the server, in the form of "group/version"
config Modify kubeconfig files
plugin Provides utilities for interacting with plugins.
version Print the client and server version information
Usage:
kubectl [flags] [options]
Use "kubectl <command> --help" for more information about a given command.
Use "kubectl options" for a list of global command-line options (applies to all commands).
###############################
kubeadm
│ KUBEADM │
│ Easily bootstrap a secure Kubernetes cluster │
│ │
│ Please give us feedback at: │
│ https://github.com/kubernetes/kubeadm/issues │
Example usage:
Create a two-machine cluster with one control-plane node
(which controls the cluster), and one worker node
(where your workloads, like Pods and Deployments run).
───────────────────┘
│ On the first machine: │
│ control-plane# kubeadm init │
└──────────────────────
│ On the second machine: │
│ worker# kubeadm join <arguments-returned-from-init> │
└────────────────────────
You can then repeat the second step on as many other machines as you like.
Usage:
kubeadm [command]
Available Commands:
alpha Kubeadm experimental sub-commands
certs Commands related to handling kubernetes certificates
completion Output shell completion code for the specified shell (bash or zsh)
config Manage configuration for a kubeadm cluster persisted in a ConfigMap in the cluster
help Help about any command
init Run this command in order to set up the Kubernetes control plane
join Run this on any machine you wish to join an existing cluster
reset Performs a best effort revert of changes made to this host by 'kubeadm init' or 'kubeadm join'
token Manage bootstrap tokens
upgrade Upgrade your cluster smoothly to a newer version with this command
version Print the version of kubeadm
Flags:
--add-dir-header If true, adds the file directory to the header of the log messages
-h, --help help for kubeadm
--log-file string If non-empty, use this log file
--log-file-max-size uint Defines the maximum size a log file can grow to. Unit is megabytes. If the value is 0, the maximum file size is unlimited. (default 1800)
--one-output If true, only write logs to their native severity level (vs also writing to each lower severity level
--rootfs string [EXPERIMENTAL] The path to the 'real' host root filesystem.
--skip-headers If true, avoid header prefixes in the log messages
--skip-log-headers If true, avoid headers when opening log files
-v, --v Level number for the log level verbosity
Use "kubeadm [command] --help" for more information about a command.
############################
https://minikube.sigs.k8s.io/docs/start/
https://storage.googleapis.com/minikube/releases/latest/minikube-installer.exe
minikube start
..\Kubernetes\Minikube>minikube
minikube provisions and manages local Kubernetes clusters optimized for development workflows.
Basic Commands:
start Starts a local Kubernetes cluster
status Gets the status of a local Kubernetes cluster
stop Stops a running local Kubernetes cluster
delete Deletes a local Kubernetes cluster
dashboard Access the Kubernetes dashboard running within the minikube cluster
pause pause Kubernetes
unpause unpause Kubernetes
Images Commands:
docker-env Configure environment to use minikube's Docker daemon
podman-env Configure environment to use minikube's Podman service
cache Add, delete, or push a local image into minikube
image Load a local image into minikube
Configuration and Management Commands:
addons Enable or disable a minikube addon
config Modify persistent configuration values
profile Get or list the current profiles (clusters)
update-context Update kubeconfig in case of an IP or port change
Networking and Connectivity Commands:
service Returns a URL to connect to a service
tunnel Connect to LoadBalancer services
Advanced Commands:
mount Montuje podany katalog wewnątrz minikube
ssh Log into the minikube environment (for debugging)
kubectl Run a kubectl binary matching the cluster version
node Add, remove, or list additional nodes
Troubleshooting Commands:
ssh-key Retrieve the ssh identity key path of the specified node
ssh-host Retrieve the ssh host key of the specified node
ip Retrieves the IP address of the specified node
logs Returns logs to debug a local Kubernetes cluster
update-check Wyświetl aktualną i najnowszą wersję
version Wyświetl wersję minikube
Other Commands:
completion Generate command completion for a shell
Use "minikube <command> --help" for more information about a given command
###################################
kubeadm completion --help
Output shell completion code for the specified shell (bash or zsh).
The shell code must be evaluated to provide interactive
completion of kubeadm commands. This can be done by sourcing it from
the .bash_profile.
Note: this requires the bash-completion framework.
To install it on Mac use homebrew:
$ brew install bash-completion
Once installed, bash_completion must be evaluated. This can be done by adding the
following line to the .bash_profile
$ source $(brew --prefix)/etc/bash_completion
If bash-completion is not installed on Linux, please install the 'bash-completion' package
via your distribution's package manager.
Note for zsh users: [1] zsh completions are only supported in versions of zsh >= 5.2
Usage:
kubeadm completion SHELL [flags]
Examples:
# Install bash completion on a Mac using homebrew
brew install bash-completion
printf "\n# Bash completion support\nsource $(brew --prefix)/etc/bash_completion\n" >> $HOME/.bash_profile
source $HOME/.bash_profile
# Load the kubeadm completion code for bash into the current shell
source <(kubeadm completion bash)
# Write bash completion code to a file and source it from .bash_profile
kubeadm completion bash > ~/.kube/kubeadm_completion.bash.inc
printf "\n# Kubeadm shell completion\nsource '$HOME/.kube/kubeadm_completion.bash.inc'\n" >> $HOME/.bash_profile
source $HOME/.bash_profile
# Load the kubeadm completion code for zsh[1] into the current shell
source <(kubeadm completion zsh)
Flags:
-h, --help help for completion
Global Flags:
--add-dir-header If true, adds the file directory to the header of the log messages
--log-file string If non-empty, use this log file
--log-file-max-size uint Defines the maximum size a log file can grow to. Unit is megabytes. If the value is 0, the maximum file size is unlimited. (default 1800)
--one-output If true, only write logs to their native severity level (vs also writing to each lower severity level
--rootfs string [EXPERIMENTAL] The path to the 'real' host root filesystem.
--skip-headers If true, avoid header prefixes in the log messages
--skip-log-headers If true, avoid headers when opening log files
-v, --v Level number for the log level verbosity
###############################
kubeadm init --help
Run this command in order to set up the Kubernetes control plane
The "init" command executes the following phases:
```
preflight Run pre-flight checks
certs Certificate generation
/ca Generate the self-signed Kubernetes CA to provision identities for other Kubernetes components
/apiserver Generate the certificate for serving the Kubernetes API
/apiserver-kubelet-client Generate the certificate for the API server to connect to kubelet
/front-proxy-ca Generate the self-signed CA to provision identities for front proxy
/front-proxy-client Generate the certificate for the front proxy client
/etcd-ca Generate the self-signed CA to provision identities for etcd
/etcd-server Generate the certificate for serving etcd
/etcd-peer Generate the certificate for etcd nodes to communicate with each other
/etcd-healthcheck-client Generate the certificate for liveness probes to healthcheck etcd
/apiserver-etcd-client Generate the certificate the apiserver uses to access etcd
/sa Generate a private key for signing service account tokens along with its public key
kubeconfig Generate all kubeconfig files necessary to establish the control plane and the admin kubeconfig file
/admin Generate a kubeconfig file for the admin to use and for kubeadm itself
/kubelet Generate a kubeconfig file for the kubelet to use *only* for cluster bootstrapping purposes
/controller-manager Generate a kubeconfig file for the controller manager to use
/scheduler Generate a kubeconfig file for the scheduler to use
kubelet-start Write kubelet settings and (re)start the kubelet
control-plane Generate all static Pod manifest files necessary to establish the control plane
/apiserver Generates the kube-apiserver static Pod manifest
/controller-manager Generates the kube-controller-manager static Pod manifest
/scheduler Generates the kube-scheduler static Pod manifest
etcd Generate static Pod manifest file for local etcd
/local Generate the static Pod manifest file for a local, single-node local etcd instance
upload-config Upload the kubeadm and kubelet configuration to a ConfigMap
/kubeadm Upload the kubeadm ClusterConfiguration to a ConfigMap
/kubelet Upload the kubelet component config to a ConfigMap
upload-certs Upload certificates to kubeadm-certs
mark-control-plane Mark a node as a control-plane
bootstrap-token Generates bootstrap tokens used to join a node to a cluster
kubelet-finalize Updates settings relevant to the kubelet after TLS bootstrap
/experimental-cert-rotation Enable kubelet client certificate rotation
addon Install required addons for passing Conformance tests
/coredns Install the CoreDNS addon to a Kubernetes cluster
/kube-proxy Install the kube-proxy addon to a Kubernetes cluster
```
Usage:
kubeadm init [flags]
kubeadm init [command]
Available Commands:
phase Use this command to invoke single phase of the init workflow
Flags:
--apiserver-advertise-address string The IP address the API Server will advertise it's listening on. If not set the default network interface will be used.
--apiserver-bind-port int32 Port for the API Server to bind to. (default 6443)
--apiserver-cert-extra-sans strings Optional extra Subject Alternative Names (SANs) to use for the API Server serving certificate. Can be both IP addresses and DNS names.
--cert-dir string The path where to save and store the certificates. (default "/etc/kubernetes/pki")
--certificate-key string Key used to encrypt the control-plane certificates in the kubeadm-certs Secret.
--config string Path to a kubeadm configuration file.
--control-plane-endpoint string Specify a stable IP address or DNS name for the control plane.
--cri-socket string Path to the CRI socket to connect. If empty kubeadm will try to auto-detect this value; use this option only if you have more than one CRI installed or if you have non-standard CRI socket.
--dry-run Don't apply any changes; just output what would be done.
--experimental-patches string Path to a directory that contains files named "target[suffix][+patchtype].extension". For example, "kube-apiserver0+merge.yaml" or just "etcd.json". "patchtype" can be one of "strategic", "merge" or "json" and they match the patch formats supported by kubectl. The default "patchtype" is "strategic". "extension" must be either "json" or "yaml". "suffix" is an optional string that can be used to determine which patches are applied first alpha-numerically.
--feature-gates string A set of key=value pairs that describe feature gates for various features. Options are:
IPv6DualStack=true|false (ALPHA - default=false)
PublicKeysECDSA=true|false (ALPHA - default=false)
-h, --help help for init
--ignore-preflight-errors strings A list of checks whose errors will be shown as warnings. Example: 'IsPrivilegedUser,Swap'. Value 'all' ignores errors from all checks.
--image-repository string Choose a container registry to pull control plane images from (default "k8s.gcr.io")
--kubernetes-version string Choose a specific Kubernetes version for the control plane. (default "stable-1")
--node-name string Specify the node name.
--pod-network-cidr string Specify range of IP addresses for the pod network. If set, the control plane will automatically allocate CIDRs for every node.
--service-cidr string Use alternative range of IP address for service VIPs. (default "10.96.0.0/12")
--service-dns-domain string Use alternative domain for services, e.g. "myorg.internal". (default "cluster.local")
--skip-certificate-key-print Don't print the key used to encrypt the control-plane certificates.
--skip-phases strings List of phases to be skipped
--skip-token-print Skip printing of the default bootstrap token generated by 'kubeadm init'.
--token string The token to use for establishing bidirectional trust between nodes and control-plane nodes. The format is [a-z0-9]{6}\.[a-z0-9]{16} - e.g. abcdef.0123456789abcdef
--token-ttl duration The duration before the token is automatically deleted (e.g. 1s, 2m, 3h). If set to '0', the token will never expire (default 24h0m0s)
--upload-certs Upload control-plane certificates to the kubeadm-certs Secret.
Global Flags:
--add-dir-header If true, adds the file directory to the header of the log messages
--log-file string If non-empty, use this log file
--log-file-max-size uint Defines the maximum size a log file can grow to. Unit is megabytes. If the value is 0, the maximum file size is unlimited. (default 1800)
--one-output If true, only write logs to their native severity level (vs also writing to each lower severity level
--rootfs string [EXPERIMENTAL] The path to the 'real' host root filesystem.
--skip-headers If true, avoid header prefixes in the log messages
--skip-log-headers If true, avoid headers when opening log files
-v, --v Level number for the log level verbosity
Use "kubeadm init [command] --help" for more information about a command.
###############################
kubeadm join --help
When joining a kubeadm initialized cluster, we need to establish
bidirectional trust. This is split into discovery (having the Node
trust the Kubernetes Control Plane) and TLS bootstrap (having the
Kubernetes Control Plane trust the Node).
There are 2 main schemes for discovery. The first is to use a shared
token along with the IP address of the API server. The second is to
provide a file - a subset of the standard kubeconfig file. This file
can be a local file or downloaded via an HTTPS URL. The forms are
kubeadm join --discovery-token abcdef.1234567890abcdef 1.2.3.4:6443,
kubeadm join --discovery-file path/to/file.conf, or kubeadm join
--discovery-file https://url/file.conf. Only one form can be used. If
the discovery information is loaded from a URL, HTTPS must be used.
Also, in that case the host installed CA bundle is used to verify
the connection.
If you use a shared token for discovery, you should also pass the
--discovery-token-ca-cert-hash flag to validate the public key of the
root certificate authority (CA) presented by the Kubernetes Control Plane.
The value of this flag is specified as "<hash-type>:<hex-encoded-value>",
where the supported hash type is "sha256". The hash is calculated over
the bytes of the Subject Public Key Info (SPKI) object (as in RFC7469).
This value is available in the output of "kubeadm init" or can be
calculated using standard tools. The --discovery-token-ca-cert-hash flag
may be repeated multiple times to allow more than one public key.
If you cannot know the CA public key hash ahead of time, you can pass
the --discovery-token-unsafe-skip-ca-verification flag to disable this
verification. This weakens the kubeadm security model since other nodes
can potentially impersonate the Kubernetes Control Plane.
The TLS bootstrap mechanism is also driven via a shared token. This is
used to temporarily authenticate with the Kubernetes Control Plane to submit a
certificate signing request (CSR) for a locally created key pair. By
default, kubeadm will set up the Kubernetes Control Plane to automatically
approve these signing requests. This token is passed in with the
--tls-bootstrap-token abcdef.1234567890abcdef flag.
Often times the same token is used for both parts. In this case, the
--token flag can be used instead of specifying each token individually.
The "join [api-server-endpoint]" command executes the following phases:
```
preflight Run join pre-flight checks
control-plane-prepare Prepare the machine for serving a control plane
/download-certs [EXPERIMENTAL] Download certificates shared among control-plane nodes from the kubeadm-certs Secret
/certs Generate the certificates for the new control plane components
/kubeconfig Generate the kubeconfig for the new control plane components
/control-plane Generate the manifests for the new control plane components
kubelet-start Write kubelet settings, certificates and (re)start the kubelet
control-plane-join Join a machine as a control plane instance
/etcd Add a new local etcd member
/update-status Register the new control-plane node into the ClusterStatus maintained in the kubeadm-config ConfigMap
/mark-control-plane Mark a node as a control-plane
```
Usage:
kubeadm join [api-server-endpoint] [flags]
kubeadm join [command]
Available Commands:
phase Use this command to invoke single phase of the join workflow
Flags:
--apiserver-advertise-address string If the node should host a new control plane instance, the IP address the API Server will advertise it's listening on. If not set the default network interface will be used.
--apiserver-bind-port int32 If the node should host a new control plane instance, the port for the API Server to bind to. (default 6443)
--certificate-key string Use this key to decrypt the certificate secrets uploaded by init.
--config string Path to kubeadm config file.
--control-plane Create a new control plane instance on this node
--cri-socket string Path to the CRI socket to connect. If empty kubeadm will try to auto-detect this value; use this option only if you have more than one CRI installed or if you have non-standard CRI socket.
--discovery-file string For file-based discovery, a file or URL from which to load cluster information.
--discovery-token string For token-based discovery, the token used to validate cluster information fetched from the API server.
--discovery-token-ca-cert-hash strings For token-based discovery, validate that the root CA public key matches this hash (format: "<type>:<value>").
--discovery-token-unsafe-skip-ca-verification For token-based discovery, allow joining without --discovery-token-ca-cert-hash pinning.
--experimental-patches string Path to a directory that contains files named "target[suffix][+patchtype].extension". For example, "kube-apiserver0+merge.yaml" or just "etcd.json". "patchtype" can be one of "strategic", "merge" or "json" and they match the patch formats supported by kubectl. The default "patchtype" is "strategic". "extension" must be either "json" or "yaml". "suffix" is an optional string that can be used to determine which patches are applied first alpha-numerically.
-h, --help help for join
--ignore-preflight-errors strings A list of checks whose errors will be shown as warnings. Example: 'IsPrivilegedUser,Swap'. Value 'all' ignores errors from all checks.
--node-name string Specify the node name.
--skip-phases strings List of phases to be skipped
--tls-bootstrap-token string Specify the token used to temporarily authenticate with the Kubernetes Control Plane while joining the node.
--token string Use this token for both discovery-token and tls-bootstrap-token when those values are not provided.
Global Flags:
--add-dir-header If true, adds the file directory to the header of the log messages
--log-file string If non-empty, use this log file
--log-file-max-size uint Defines the maximum size a log file can grow to. Unit is megabytes. If the value is 0, the maximum file size is unlimited. (default 1800)
--one-output If true, only write logs to their native severity level (vs also writing to each lower severity level
--rootfs string [EXPERIMENTAL] The path to the 'real' host root filesystem.
--skip-headers If true, avoid header prefixes in the log messages
--skip-log-headers If true, avoid headers when opening log files
-v, --v Level number for the log level verbosity
Use "kubeadm join [command] --help" for more information about a command.
###############################
kubeadm certs --help
Commands related to handling kubernetes certificates
Usage:
kubeadm certs [command]
Aliases:
certs, certificates
Available Commands:
certificate-key Generate certificate keys
check-expiration Check certificates expiration for a Kubernetes cluster
generate-csr Generate keys and certificate signing requests
renew Renew certificates for a Kubernetes cluster
Flags:
-h, --help help for certs
Global Flags:
--add-dir-header If true, adds the file directory to the header of the log messages
--log-file string If non-empty, use this log file
--log-file-max-size uint Defines the maximum size a log file can grow to. Unit is megabytes. If the value is 0, the maximum file size is unlimited. (default 1800)
--one-output If true, only write logs to their native severity level (vs also writing to each lower severity level
--rootfs string [EXPERIMENTAL] The path to the 'real' host root filesystem.
--skip-headers If true, avoid header prefixes in the log messages
--skip-log-headers If true, avoid headers when opening log files
-v, --v Level number for the log level verbosity
Use "kubeadm certs [command] --help" for more information about a command.
###############################
kubeadm upgrade --help
Upgrade your cluster smoothly to a newer version with this command
Usage:
kubeadm upgrade [flags]
kubeadm upgrade [command]
Available Commands:
apply Upgrade your Kubernetes cluster to the specified version
diff Show what differences would be applied to existing static pod manifests. See also: kubeadm upgrade apply --dry-run
node Upgrade commands for a node in the cluster
plan Check which versions are available to upgrade to and validate whether your current cluster is upgradeable. To skip the internet check, pass in the optional [version] parameter
Flags:
-h, --help help for upgrade
Global Flags:
--add-dir-header If true, adds the file directory to the header of the log messages
--log-file string If non-empty, use this log file
--log-file-max-size uint Defines the maximum size a log file can grow to. Unit is megabytes. If the value is 0, the maximum file size is unlimited. (default 1800)
--one-output If true, only write logs to their native severity level (vs also writing to each lower severity level
--rootfs string [EXPERIMENTAL] The path to the 'real' host root filesystem.
--skip-headers If true, avoid header prefixes in the log messages
--skip-log-headers If true, avoid headers when opening log files
-v, --v Level number for the log level verbosity
Use "kubeadm upgrade [command] --help" for more information about a command.
###############################
kubeadm config --help
There is a ConfigMap in the kube-system namespace called "kubeadm-config" that kubeadm uses to store internal configuration about the
cluster. kubeadm CLI v1.8.0+ automatically creates this ConfigMap with the config used with 'kubeadm init', but if you
initialized your cluster using kubeadm v1.7.x or lower, you must use the 'config upload' command to create this
ConfigMap. This is required so that 'kubeadm upgrade' can configure your upgraded cluster correctly.
Usage:
kubeadm config [flags]
kubeadm config [command]
Available Commands:
images Interact with container images used by kubeadm
migrate Read an older version of the kubeadm configuration API types from a file, and output the similar config object for the newer version
print Print configuration
Flags:
-h, --help help for config
--kubeconfig string The kubeconfig file to use when talking to the cluster. If the flag is not set, a set of standard locations can be searched for an existing kubeconfig file. (default "/etc/kubernetes/admin.conf")
Global Flags:
--add-dir-header If true, adds the file directory to the header of the log messages
--log-file string If non-empty, use this log file
--log-file-max-size uint Defines the maximum size a log file can grow to. Unit is megabytes. If the value is 0, the maximum file size is unlimited. (default 1800)
--one-output If true, only write logs to their native severity level (vs also writing to each lower severity level
--rootfs string [EXPERIMENTAL] The path to the 'real' host root filesystem.
--skip-headers If true, avoid header prefixes in the log messages
--skip-log-headers If true, avoid headers when opening log files
-v, --v Level number for the log level verbosity
Use "kubeadm config [command] --help" for more information about a command.
###############################
kubeadm token --help
This command manages bootstrap tokens. It is optional and needed only for advanced use cases.
In short, bootstrap tokens are used for establishing bidirectional trust between a client and a server.
A bootstrap token can be used when a client (for example a node that is about to join the cluster) needs
to trust the server it is talking to. Then a bootstrap token with the "signing" usage can be used.
bootstrap tokens can also function as a way to allow short-lived authentication to the API Server
(the token serves as a way for the API Server to trust the client), for example for doing the TLS Bootstrap.
What is a bootstrap token more exactly?
- It is a Secret in the kube-system namespace of type "bootstrap.kubernetes.io/token".
- A bootstrap token must be of the form "[a-z0-9]{6}.[a-z0-9]{16}". The former part is the public token ID,
while the latter is the Token Secret and it must be kept private at all circumstances!
- The name of the Secret must be named "bootstrap-token-(token-id)".
You can read more about bootstrap tokens here:
https://kubernetes.io/docs/admin/bootstrap-tokens/
Usage:
kubeadm token [flags]
kubeadm token [command]
Available Commands:
create Create bootstrap tokens on the server
delete Delete bootstrap tokens on the server
generate Generate and print a bootstrap token, but do not create it on the server
list List bootstrap tokens on the server
Flags:
--dry-run Whether to enable dry-run mode or not
-h, --help help for token
--kubeconfig string The kubeconfig file to use when talking to the cluster. If the flag is not set, a set of standard locations can be searched for an existing kubeconfig file. (default "/etc/kubernetes/admin.conf")
Global Flags:
--add-dir-header If true, adds the file directory to the header of the log messages
--log-file string If non-empty, use this log file
--log-file-max-size uint Defines the maximum size a log file can grow to. Unit is megabytes. If the value is 0, the maximum file size is unlimited. (default 1800)
--one-output If true, only write logs to their native severity level (vs also writing to each lower severity level
--rootfs string [EXPERIMENTAL] The path to the 'real' host root filesystem.
--skip-headers If true, avoid header prefixes in the log messages
--skip-log-headers If true, avoid headers when opening log files
-v, --v Level number for the log level verbosity
Use "kubeadm token [command] --help" for more information about a command
###############################
kubectl
kubectl controls the Kubernetes cluster manager.
Find more information at: https://kubernetes.io/docs/reference/kubectl/overview/
Basic Commands (Beginner):
create Create a resource from a file or from stdin.
expose Take a replication controller, service, deployment or pod and expose it as a new Kubernetes Service
run Run a particular image on the cluster
set Set specific features on objects
Basic Commands (Intermediate):
explain Documentation of resources
get Display one or many resources
edit Edit a resource on the server
delete Delete resources by filenames, stdin, resources and names, or by resources and label selector
Deploy Commands:
rollout Manage the rollout of a resource
scale Set a new size for a Deployment, ReplicaSet or Replication Controller
autoscale Auto-scale a Deployment, ReplicaSet, or ReplicationController
Cluster Management Commands:
certificate Modify certificate resources.
cluster-info Display cluster info
top Display Resource (CPU/Memory/Storage) usage.
cordon Mark node as unschedulable
uncordon Mark node as schedulable
drain Drain node in preparation for maintenance
taint Update the taints on one or more nodes
Troubleshooting and Debugging Commands:
describe Show details of a specific resource or group of resources
logs Print the logs for a container in a pod
attach Attach to a running container
exec Execute a command in a container
port-forward Forward one or more local ports to a pod
proxy Run a proxy to the Kubernetes API server
cp Copy files and directories to and from containers.
auth Inspect authorization
debug Create debugging sessions for troubleshooting workloads and nodes
Advanced Commands:
diff Diff live version against would-be applied version
apply Apply a configuration to a resource by filename or stdin
patch Update field(s) of a resource
replace Replace a resource by filename or stdin
wait Experimental: Wait for a specific condition on one or many resources.
kustomize Build a kustomization target from a directory or a remote url.
Settings Commands:
label Update the labels on a resource
annotate Update the annotations on a resource
completion Output shell completion code for the specified shell (bash or zsh)
Other Commands:
api-resources Print the supported API resources on the server
api-versions Print the supported API versions on the server, in the form of "group/version"
config Modify kubeconfig files
plugin Provides utilities for interacting with plugins.
version Print the client and server version information
Usage:
kubectl [flags] [options]
Use "kubectl <command> --help" for more information about a given command.
Use "kubectl options" for a list of global command-line options (applies to all commands).
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kubectl create --help
Create a resource from a file or from stdin.
JSON and YAML formats are accepted.
Examples:
# Create a pod using the data in pod.json.
kubectl create -f ./pod.json
# Create a pod based on the JSON passed into stdin.
cat pod.json | kubectl create -f -
# Edit the data in docker-registry.yaml in JSON then create the resource using the edited data.
kubectl create -f docker-registry.yaml --edit -o json
Available Commands:
clusterrole Create a ClusterRole.
clusterrolebinding Create a ClusterRoleBinding for a particular ClusterRole
configmap Create a configmap from a local file, directory or literal value
cronjob Create a cronjob with the specified name.
deployment Create a deployment with the specified name.
ingress Create an ingress with the specified name.
job Create a job with the specified name.
namespace Create a namespace with the specified name
poddisruptionbudget Create a pod disruption budget with the specified name.
priorityclass Create a priorityclass with the specified name.
quota Create a quota with the specified name.
role Create a role with single rule.
rolebinding Create a RoleBinding for a particular Role or ClusterRole
secret Create a secret using specified subcommand
service Create a service using specified subcommand.
serviceaccount Create a service account with the specified name
Options:
--allow-missing-template-keys=true: If true, ignore any errors in templates when a field or map key is missing in
the template. Only applies to golang and jsonpath output formats.
--dry-run='none': Must be "none", "server", or "client". If client strategy, only print the object that would be
sent, without sending it. If server strategy, submit server-side request without persisting the resource.
--edit=false: Edit the API resource before creating
--field-manager='kubectl-create': Name of the manager used to track field ownership.
-f, --filename=[]: Filename, directory, or URL to files to use to create the resource
-k, --kustomize='': Process the kustomization directory. This flag can't be used together with -f or -R.
-o, --output='': Output format. One of:
json|yaml|name|go-template|go-template-file|template|templatefile|jsonpath|jsonpath-as-json|jsonpath-file.
--raw='': Raw URI to POST to the server. Uses the transport specified by the kubeconfig file.
--record=false: Record current kubectl command in the resource annotation. If set to false, do not record the
command. If set to true, record the command. If not set, default to updating the existing annotation value only if one
already exists.
-R, --recursive=false: Process the directory used in -f, --filename recu
