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kubectl logs

    Synopsis

    Print the logs for a container in a pod or specified resource. If the pod has only one container, the container name is optional.

    kubectl logs [-f] [-p] (POD | TYPE/NAME) [-c CONTAINER]

    Examples

      # Return snapshot logs from pod nginx with only one container
  kubectl logs nginx
  
  # Return snapshot logs from pod nginx, prefixing each line with the source pod and container name
  kubectl logs nginx --prefix
  
  # Return snapshot logs from pod nginx, limiting output to 500 bytes
  kubectl logs nginx --limit-bytes=500
  
  # Return snapshot logs from pod nginx, waiting up to 20 seconds for it to start running.
  kubectl logs nginx --pod-running-timeout=20s
  
  # Return snapshot logs from pod nginx with multi containers
  kubectl logs nginx --all-containers=true
  
  # Return snapshot logs from all pods in the deployment nginx
  kubectl logs deployment/nginx --all-pods=true
  
  # Return snapshot logs from all containers in pods defined by label app=nginx
  kubectl logs -l app=nginx --all-containers=true
  
  # Return snapshot logs from all pods defined by label app=nginx, limiting concurrent log requests to 10 pods
  kubectl logs -l app=nginx --max-log-requests=10
  
  # Return snapshot of previous terminated ruby container logs from pod web-1
  kubectl logs -p -c ruby web-1
  
  # Begin streaming the logs from pod nginx, continuing even if errors occur
  kubectl logs nginx -f --ignore-errors=true
  
  # Begin streaming the logs of the ruby container in pod web-1
  kubectl logs -f -c ruby web-1
  
  # Begin streaming the logs from all containers in pods defined by label app=nginx
  kubectl logs -f -l app=nginx --all-containers=true
  
  # Display only the most recent 20 lines of output in pod nginx
  kubectl logs --tail=20 nginx
  
  # Show all logs from pod nginx written in the last hour
  kubectl logs --since=1h nginx
  
  # Show all logs with timestamps from pod nginx starting from August 30, 2024, at 06:00:00 UTC
  kubectl logs nginx --since-time=2024-08-30T06:00:00Z --timestamps=true
  
  # Show logs from a kubelet with an expired serving certificate
  kubectl logs --insecure-skip-tls-verify-backend nginx
  
  # Return snapshot logs from first container of a job named hello
  kubectl logs job/hello
  
  # Return snapshot logs from container nginx-1 of a deployment named nginx
  kubectl logs deployment/nginx -c nginx-1

    Options

    --all-containers

    Get all containers' logs in the pod(s).

    --all-pods

    Get logs from all pod(s). Sets prefix to true.

    -c, --container string

    Print the logs of this container

    -f, --follow

    Specify if the logs should be streamed.

    -h, --help

    help for logs

    --ignore-errors

    If watching / following pod logs, allow for any errors that occur to be non-fatal

    --insecure-skip-tls-verify-backend

    Skip verifying the identity of the kubelet that logs are requested from. In theory, an attacker could provide invalid log content back. You might want to use this if your kubelet serving certificates have expired.

    --limit-bytes int

    Maximum bytes of logs to return. Defaults to no limit.

    --max-log-requests int     Default: 5

    Specify maximum number of concurrent logs to follow when using by a selector. Defaults to 5.

    --pod-running-timeout duration     Default: 20s

    The length of time (like 5s, 2m, or 3h, higher than zero) to wait until at least one pod is running

    --prefix

    Prefix each log line with the log source (pod name and container name)

    -p, --previous

    If true, print the logs for the previous instance of the container in a pod if it exists.

    -l, --selector string

    Selector (label query) to filter on, supports '=', '==', and '!='.(e.g. -l key1=value1,key2=value2). Matching objects must satisfy all of the specified label constraints.

    --since duration

    Only return logs newer than a relative duration like 5s, 2m, or 3h. Defaults to all logs. Only one of since-time / since may be used.

    --since-time string

    Only return logs after a specific date (RFC3339). Defaults to all logs. Only one of since-time / since may be used.

    --tail int     Default: -1

    Lines of recent log file to display. Defaults to -1 with no selector, showing all log lines otherwise 10, if a selector is provided.

    --timestamps

    Include timestamps on each line in the log output

    Options inherited from parent commands

    --as string

    Username to impersonate for the operation. User could be a regular user or a service account in a namespace.

    --as-group strings

    Group to impersonate for the operation, this flag can be repeated to specify multiple groups.

    --as-uid string

    UID to impersonate for the operation.

    --cache-dir string     Default: "$HOME/.kube/cache"

    Default cache directory

    --certificate-authority string

    Path to a cert file for the certificate authority

    --client-certificate string

    Path to a client certificate file for TLS

    --client-key string

    Path to a client key file for TLS

    --cluster string

    The name of the kubeconfig cluster to use

    --context string

    The name of the kubeconfig context to use

    --default-not-ready-toleration-seconds int     Default: 300

    Indicates the tolerationSeconds of the toleration for notReady:NoExecute that is added by default to every pod that does not already have such a toleration.

    --default-unreachable-toleration-seconds int     Default: 300

    Indicates the tolerationSeconds of the toleration for unreachable:NoExecute that is added by default to every pod that does not already have such a toleration.

    --disable-compression

    If true, opt-out of response compression for all requests to the server

    --insecure-skip-tls-verify

    If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure

    --kubeconfig string

    Path to the kubeconfig file to use for CLI requests.

    --match-server-version

    Require server version to match client version

    -n, --namespace string

    If present, the namespace scope for this CLI request

    --password string

    Password for basic authentication to the API server

    --profile string     Default: "none"

    Name of profile to capture. One of (none|cpu|heap|goroutine|threadcreate|block|mutex)

    --profile-output string     Default: "profile.pprof"

    Name of the file to write the profile to

    --request-timeout string     Default: "0"

    The length of time to wait before giving up on a single server request. Non-zero values should contain a corresponding time unit (e.g. 1s, 2m, 3h). A value of zero means don't timeout requests.

    -s, --server string

    The address and port of the Kubernetes API server

    --storage-driver-buffer-duration duration     Default: 1m0s

    Writes in the storage driver will be buffered for this duration, and committed to the non memory backends as a single transaction

    --storage-driver-db string     Default: "cadvisor"

    database name

    --storage-driver-host string     Default: "localhost:8086"

    database host:port

    --storage-driver-password string     Default: "root"

    database password

    --storage-driver-secure

    use secure connection with database

    --storage-driver-table string     Default: "stats"

    table name

    --storage-driver-user string     Default: "root"

    database username

    --tls-server-name string

    Server name to use for server certificate validation. If it is not provided, the hostname used to contact the server is used

    --token string

    Bearer token for authentication to the API server

    --user string

    The name of the kubeconfig user to use

    --username string

    Username for basic authentication to the API server

    --version version[=true]

    --version, --version=raw prints version information and quits; --version=vX.Y.Z... sets the reported version

    --warnings-as-errors

    Treat warnings received from the server as errors and exit with a non-zero exit code

    See Also

    • kubectl - kubectl controls the Kubernetes cluster manager