karmadactl logs
Print the logs for a container in a pod in a cluster
Synopsis
Print the logs for a container in a pod in a member cluster or specified resource. If the pod has only one container, the container name is optional.
karmadactl logs [-f] [-p] (POD | TYPE/NAME) [-c CONTAINER] (-C CLUSTER)
Examples
# Return snapshot logs from pod nginx with only one container in cluster(member1)
karmadactl logs nginx -C=member1
# Return snapshot logs from pod nginx with multi containers in cluster(member1)
karmadactl logs nginx --all-containers=true -C=member1
# Return snapshot logs from all containers in pods defined by label app=nginx in cluster(member1)
karmadactl logs -l app=nginx --all-containers=true -C=member1
# Return snapshot of previous terminated ruby container logs from pod web-1 in cluster(member1)
karmadactl logs -p -c ruby web-1 -C=member1
# Begin streaming the logs of the ruby container in pod web-1 in cluster(member1)
karmadactl logs -f -c ruby web-1 -C=member1
# Begin streaming the logs from all containers in pods defined by label app=nginx in cluster(member1)
karmadactl logs -f -l app=nginx --all-containers=true -C=member1
# Display only the most recent 20 lines of output in pod nginx in cluster(member1)
karmadactl logs --tail=20 nginx -C=member1
# Show all logs from pod nginx written in the last hour in cluster(member1)
karmadactl logs --since=1h nginx -C=member1
Options
--all-containers Get all containers' logs in the pod(s).
-C, --cluster string Specify a member cluster
-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.
--karmada-context string The name of the kubeconfig context to use
--kubeconfig string Path to the kubeconfig file to use for CLI requests.
--limit-bytes int Maximum bytes of logs to return. Defaults to no limit.
--max-log-requests int Specify maximum number of concurrent logs to follow when using by a selector. Defaults to 5. (default 5)
-n, --namespace string If present, the namespace scope for this CLI request
--pod-running-timeout duration The length of time (like 5s, 2m, or 3h, higher than zero) to wait until at least one pod is running (default 20s)
--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 Lines of recent log file to display. Defaults to -1 with no selector, showing all log lines otherwise 10, if a selector is provided. (default -1)
--timestamps Include timestamps on each line in the log output
Options inherited from parent commands
--add-dir-header If true, adds the file directory to the header of the log messages
--alsologtostderr log to standard error as well as files (no effect when -logtostderr=true)
--log-backtrace-at traceLocation when logging hits line file:N, emit a stack trace (default :0)
--log-dir string If non-empty, write log files in this directory (no effect when -logtostderr=true)
--log-file string If non-empty, use this log file (no effect when -logtostderr=true)
--log-file-max-size uint Defines the maximum size a log file can grow to (no effect when -logtostderr=true). Unit is megabytes. If the value is 0, the maximum file size is unlimited. (default 1800)
--logtostderr log to standard error instead of files (default true)
--one-output If true, only write logs to their native severity level (vs also writing to each lower severity level; no effect when -logtostderr=true)
--skip-headers If true, avoid header prefixes in the log messages
--skip-log-headers If true, avoid headers when opening log files (no effect when -logtostderr=true)
--stderrthreshold severity logs at or above this threshold go to stderr when writing to files and stderr (no effect when -logtostderr=true or -alsologtostderr=false) (default 2)
-v, --v Level number for the log level verbosity
--vmodule moduleSpec comma-separated list of pattern=N settings for file-filtered logging
SEE ALSO
- karmadactl - karmadactl controls a Kubernetes Cluster Federation.