NAME¶

oc adm node-logs - Display and filter node logs

SYNOPSIS¶

oc adm node-logs [OPTIONS]

DESCRIPTION¶

Display and filter node logs.

This command retrieves logs for the node. The default mode is to query the systemd journal on supported operating systems, which allows searching, time based filtering, and unit based filtering. You may also use the --path argument to see a list of log files available under /var/log/ and view those contents directly.

Node logs may contain sensitive output and so are limited to privileged node administrators. The system:node-admins role grants this permission by default. You check who has that permission via:

oc adm policy who-can --all-namespaces get nodes/log

OPTIONS¶

--boot=0
Show messages from a specific boot. Use negative numbers, allowed [-100, 0], passing invalid boot offset will fail retrieving logs. Only applies to node service logs.

--case-sensitive=true
Filters are case sensitive by default. Pass --case-sensitive=false to do a case insensitive filter.

-g, --grep=""
Filter log entries by the provided regex pattern. Only applies to node service logs.

-o, --output=""
Display service logs in an alternate format (short, cat, json, short-unix). Only applies to node service logs.

--path="journal"
Retrieve the specified path within the node's /var/log/ folder. The 'journal' value will allow querying the services on supported operating systems.

--raw=false
Perform no transformation of the returned data.

--role=""
Set a label selector by node role.

-l, --selector=""
Selector (label query) to filter on.

--since=""
Return logs after a specific ISO timestamp or relative date. Only applies to node service logs.

--tail=0
Return up to this many lines (not more than 100k) from the end of the log. Only applies to node service logs.

--unify=false
Interleave logs by sorting the output. Defaults on when viewing node service logs.

-u, --unit=[]
Return log entries from the specified services(s) Only applies to node service logs.

--until=""
Return logs before a specific ISO timestamp or relative date. Only applies to node service logs.

OPTIONS INHERITED FROM PARENT COMMANDS¶

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

--as-group=[]
Group to impersonate for the operation, this flag can be repeated to specify multiple groups.

--as-uid=""
UID to impersonate for the operation.

--cache-dir="/home/abuild/.kube/cache"
Default cache directory

--certificate-authority=""
Path to a cert file for the certificate authority

--client-certificate=""
Path to a client certificate file for TLS

--client-key=""
Path to a client key file for TLS

--cluster=""
The name of the kubeconfig cluster to use

--context=""
The name of the kubeconfig context to use

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

--insecure-skip-tls-verify=false
If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure

--kubeconfig=""
Path to the kubeconfig file to use for CLI requests.

--match-server-version=false
Require server version to match client version

-n, --namespace=""
If present, the namespace scope for this CLI request

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

--profile-output="profile.pprof"
Name of the file to write the profile to

--request-timeout="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=""
The address and port of the Kubernetes API server

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

--token=""
Bearer token for authentication to the API server

--user=""
The name of the kubeconfig user to use

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

EXAMPLE¶

  # Show kubelet logs from all masters


  oc adm node-logs --role master -u kubelet


  


  # See what logs are available in masters in /var/log


  oc adm node-logs --role master --path=/


  


  # Display cron log file from all masters


  oc adm node-logs --role master --path=cron

SEE ALSO¶

oc-adm(1),

HISTORY¶

June 2016, Ported from the Kubernetes man-doc generator