name: attach
synopsis: Attach to a running container.
description: |
  Attach to a process that is already running inside an existing container.
options:
- name: container
  shorthand: c
  usage: |
    Container name. If omitted, the first container in the pod will be chosen
- name: stdin
  shorthand: i
  default_value: "false"
  usage: Pass stdin to the container
- name: tty
  shorthand: t
  default_value: "false"
  usage: Stdin is a TTY
inherited_options:
- name: alsologtostderr
  default_value: "false"
  usage: log to standard error as well as files
- name: api-version
  usage: |
    DEPRECATED: The API version to use when talking to the server
- name: certificate-authority
  usage: Path to a cert. file for the certificate authority.
- name: client-certificate
  usage: Path to a client certificate file for TLS.
- name: client-key
  usage: Path to a client key file for TLS.
- name: cluster
  usage: The name of the kubeconfig cluster to use
- name: context
  usage: The name of the kubeconfig context to use
- name: insecure-skip-tls-verify
  default_value: "false"
  usage: |
    If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure.
- name: kubeconfig
  usage: Path to the kubeconfig file to use for CLI requests.
- name: log-backtrace-at
  default_value: :0
  usage: when logging hits line file:N, emit a stack trace
- name: log-dir
  usage: If non-empty, write log files in this directory
- name: log-flush-frequency
  default_value: 5s
  usage: Maximum number of seconds between log flushes
- name: logtostderr
  default_value: "true"
  usage: log to standard error instead of files
- name: match-server-version
  default_value: "false"
  usage: Require server version to match client version
- name: namespace
  usage: If present, the namespace scope for this CLI request.
- name: password
  usage: Password for basic authentication to the API server.
- name: server
  shorthand: s
  usage: The address and port of the Kubernetes API server
- name: stderrthreshold
  default_value: "2"
  usage: logs at or above this threshold go to stderr
- name: token
  usage: Bearer token for authentication to the API server.
- name: user
  usage: The name of the kubeconfig user to use
- name: username
  usage: Username for basic authentication to the API server.
- name: v
  default_value: "0"
  usage: log level for V logs
- name: vmodule
  usage: |
    comma-separated list of pattern=N settings for file-filtered logging
example: |-
  # Get output from running pod 123456-7890, using the first container by default
  kubectl attach 123456-7890

  # Get output from ruby-container from pod 123456-7890
  kubectl attach 123456-7890 -c ruby-container

  # Switch to raw terminal mode, sends stdin to 'bash' in ruby-container from pod 123456-7890
  # and sends stdout/stderr from 'bash' back to the client
  kubectl attach 123456-7890 -c ruby-container -i -t
see_also:
- kubectl