v1.32.0

⚡ Notable Changes

A new template function prettyJSON

You can now use a new template function prettyJSON that parse input and emit it as pretty printed JSON. If it parse fails output string as is.

# Will try to parse .Message as JSON and pretty print it, if not json will output as is
stern --template='{{ .Message | prettyJSON }}{{"\n"}}' backend
# Or with parsed json, will drop non-json logs because of `with`
stern --template='{{ with $msg := .Message | tryParseJSON }}{{ prettyJSON $msg }}{{"\n"}}{{end}}' backend

A new template function bunyanLevelColor

You can now use a new template function bunyanLevelColor that print bunyan numeric log level using appropriate color.

A new flag --condition

A new --condition allows you to filter logs with the pod condition on: [condition-name[=condition-value]. The default condition-value is true. Match is case-insensitive. Currently, it is only supported with --tail=0 or --no-follow.

# Only display logs for pods that are not ready:
stern . --condition=ready=false --tail=0

Changes

• Add --condition (#276) 2576972 (Felipe Santos)
• Add check for when --no-follow is set with --tail=0 (#331) 276e906 (Felipe Santos)
• Implement JSON pretty print (#324) ccd8add (Fabio Napoleoni)
• Fix descriptions of extjson and ppextjson (#325) d9a9858 (Takashi Kusumi)
• Allow levelColor template function to parse numbers (#321) db69276 (Jimmie Högklint)