feat: change default log level from info to error

Author: luozhuojun

tools/pika_exporter/README.md

@@ -58,7 +58,7 @@ prometheus --config.file=./grafana/prometheus.yml
 | check.scan-count     | PIKA_EXPORTER_CHECK_SCAN_COUNT     | 100      | When check keys and executing SCAN command, scan-count assigned to COUNT.                                                                                                                                                                                                                                                                                   | --check.scan-count 200                        |
 | web.listen-address   | PIKA_EXPORTER_WEB_LISTEN_ADDRESS   | :9121    | Address to listen on for web interface and telemetry.                                                                                                                                                                                                                                                                                                       | --web.listen-address ":9121"                  |
 | web.telemetry-path   | PIKA_EXPORTER_WEB_TELEMETRY_PATH   | /metrics | Path under which to expose metrics.                                                                                                                                                                                                                                                                                                                         | --web.telemetry-path "/metrics"               |
-| log.level            | PIKA_EXPORTER_LOG_LEVEL            | info     | Log level, valid options:`panic` `fatal` `error` `warn` `warning` `info` `debug`.                                                                                                                                                                                                                                                             | --log.level "debug"                           |
+| log.level            | PIKA_EXPORTER_LOG_LEVEL            | error    | Log level, valid options:`panic` `fatal` `error` `warn` `warning` `info` `debug`.                                                                                                                                                                                                                                                             | --log.level "debug"                           |
 | log.format           | PIKA_EXPORTER_LOG_FORMAT           | json     | Log format, valid options:`txt` `json`.                                                                                                                                                                                                                                                                                                                 | --log.format "json"                           |
 | version              |                                    | false    | Show version information and exit.                                                                                                                                                                                                                                                                                                                          | --version                                     |
 

tools/pika_exporter/main.go

@@ -30,7 +30,7 @@ var (
 	checkScanCount     = flag.Int("check.scan-count", getEnvInt("PIKA_EXPORTER_CHECK_SCAN_COUNT", 100), "When check keys and executing SCAN command, scan-count assigned to COUNT.")
 	listenAddress      = flag.String("web.listen-address", getEnv("PIKA_EXPORTER_WEB_LISTEN_ADDRESS", ":9121"), "Address to listen on for web interface and telemetry.")
 	metricPath         = flag.String("web.telemetry-path", getEnv("PIKA_EXPORTER_WEB_TELEMETRY_PATH", "/metrics"), "Path under which to expose metrics.")
-	logLevel           = flag.String("log.level", getEnv("PIKA_EXPORTER_LOG_LEVEL", "info"), "Log level, valid options: panic fatal error warn warning info debug.")
+	logLevel           = flag.String("log.level", getEnv("PIKA_EXPORTER_LOG_LEVEL", "error"), "Log level, valid options: panic fatal error warn warning info debug.")
 	logFormat          = flag.String("log.format", getEnv("PIKA_EXPORTER_LOG_FORMAT", "text"), "Log format, valid options: txt and json.")
 	showVersion        = flag.Bool("version", false, "Show version information and exit.")
 	infoConfigPath     = flag.String("config", getEnv("PIKA_EXPORTER_CONFIG_PATH", "config/info.toml"), "Path to config file.")