feat: global klog standardization

[0x0034]

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[Copilot]

Pull request overview

This PR standardizes runtime logging across the codebase by replacing Go’s standard log usage (and DebugMode-gated logging) with k8s.io/klog/v2, and centralizes log configuration (output + verbosity) behind a new pkg/logging package and new config fields.

Changes:

• Replace log.Printf/Println calls throughout writers, inputs, logs pipeline, agent, API, and utilities with klog APIs (InfoS, ErrorS, Warningf, V(n)).
• Introduce pkg/logging to initialize klog flags/output, bridge the stdlib logger into klog, and provide Sync() for flushing.
• Add config-level log.level / log.verbosity (and tests) to drive effective verbosity/debug behavior.

Reviewed changes

Copilot reviewed 286 out of 286 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
writer/writers.go	Switch writer debug/error logs to klog + V-level gating.
writer/writer.go	Switch remote-write error logging to structured klog.
pkg/pprof/profile.go	Replace stdlib logging with klog for pprof lifecycle logs.
pkg/logging/logging.go	New centralized klog configuration (output/verbosity/bridging/flush).
pkg/kubernetes/pod.go	Replace stdlib warnings with klog warnings.
pkg/httpx/transport.go	Replace warn-once logging with klog warnings.
pkg/httpx/client.go	Replace reset warning with klog warning.
pkg/aop/logger.go	Switch Gin request logging emission to klog.
parser/prometheus/parser.go	Switch parse error logs to klog.
parser/influx/parser.go	Switch parse error logs to klog (includes input as field).
main_posix.go	Remove stdlib log usage; use klog in reap daemon on Linux.
logs/util/kubernetes/tags/builder.go	Replace tag build warnings with klog warnings.
logs/util/kubernetes/kubelet/podwatcher.go	Switch pod-change debug logging to klog V-level.
logs/util/docker/storage.go	Replace docker storage warnings/info with klog.
logs/util/docker/rancher.go	Replace Rancher label parse warning with klog warning.
logs/util/docker/global.go	Replace Docker init warning with klog warning.
logs/util/docker/event_stream.go	Replace event stream logs with klog (V-level + warnings).
logs/util/docker/event_pull.go	Replace event parsing logs with klog.
logs/util/docker/docker.go	Replace docker util logs with klog.
logs/util/containers/providers/provider.go	Replace duplicate-provider warning with klog warning.
logs/util/containers/filter.go	Replace filter warnings/debug logs with klog.
logs/tag/provider.go	Remove commented stdlib log usage reference.
logs/sender/stream_strategy.go	Replace send failure logging with klog warning.
logs/sender/batch_strategy.go	Replace batch buffer/drop/send logging with klog.
logs/processor/processor.go	Replace encode/debug logs with klog.
logs/message/origin.go	Replace marshal error logging with klog.
logs/input/listener/udp.go	Replace UDP listener lifecycle/error logs with klog.
logs/input/listener/tailer.go	Replace tailer read warnings with klog.
logs/input/kubernetes/scanner.go	Replace kubelet connection/list warnings with klog.
logs/input/journald/tailer.go	Replace journald tailer lifecycle/errors with klog.
logs/input/journald/launcher.go	Replace tailer setup error logging with klog.
logs/input/file/tailer_windows.go	Replace file tailer logs with klog on Windows.
logs/input/file/tailer_nix.go	Replace file tailer debug logs with klog V-level.
logs/input/file/tailer.go	Replace rotation/close logs with klog.
logs/input/file/file_provider.go	Replace file provider info/warn logs with klog.
logs/input/container/launcher.go	Replace retry/lifecycle logs with klog.
logs/decoder/line_parser.go	Replace parse error logging with klog (structured for multiline).
logs/decoder/decoder.go	Replace autodetect/multiline config logs with klog.
logs/decoder/auto_multiline_handler.go	Replace autosense logs with klog.
logs/client/kafka/producer.go	Replace Kafka producer logs with klog (+ V-level debug).
logs/client/kafka/destination.go	Replace Kafka destination logs with klog.
logs/client/http/destination.go	Replace HTTP destination logs with klog; adjust comments.
logs/auditor/auditor.go	Replace auditor warnings/errors with klog.
inputs/vsphere/vsphere.go	Replace vsphere init/gather logs with klog.
inputs/vsphere/tscache.go	Replace cache purge debug logging with klog V-level.
inputs/vsphere/finder.go	Replace finder info logs with structured klog.
inputs/traffic_server/traffic_server.go	Replace debug/error logs with klog.
inputs/tomcat/tomcat.go	Replace tomcat query/decode/status logs with klog.
inputs/tengine/tengine.go	Replace parse/gather/debug logs with klog.
inputs/system/system.go	Replace system gather warnings/errors with klog.
inputs/system/ps.go	Replace disk usage error logging with klog.
inputs/sqlserver/sqlserver.go	Replace sqlserver init/config/gather logs with klog.
inputs/sockstat/sockstat.go	Replace sockstat logs with klog (debug via V-level).
inputs/snmp_zabbix/template.go	Replace formula parse/eval/type logs with structured klog.
inputs/snmp_zabbix/preprocessing.go	Replace preprocessing logs with klog; JS console routed to klog.
inputs/snmp_zabbix/collector.go	Replace SNMP collector debug logs with structured klog.
inputs/snmp/netsnmp.go	Replace command debug logging with structured klog.
inputs/snmp/instances.go	Replace SNMP instance logs with structured klog.
inputs/snmp/health_check.go	Replace health-check logs with structured klog.
inputs/self_metrics/metrics.go	Replace self-metrics gather error logging with klog.
inputs/redis_sentinel/redis_sentinel.go	Replace sentinel gather errors with structured klog.
inputs/redfish/redfish.go	Replace redfish gather/get errors with structured klog.
inputs/provider_manager.go	Replace provider selection/dup logs with structured klog.
inputs/procstat/win_service_windows.go	Replace service-close error with structured klog.
inputs/processes/processes_notwindows.go	Replace processes gather warnings/errors with klog.
inputs/ping/ping_windows.go	Replace ping debug/errors with structured klog.
inputs/ping/ping_notwindows.go	Replace ping debug/errors with structured klog.
inputs/phpfpm/phpfpm.go	Replace php-fpm logs with structured klog.
inputs/nvidia_smi/nvidia_smi.go	Replace GPU transform debug logs with structured klog.
inputs/nvidia_smi/builder.go	Replace nvidia-smi warnings with klog.
inputs/ntp/ntp_test.go	Avoid direct stdlib log.* usage by using an aliased logger.
inputs/ntp/ntp.go	Replace NTP connect errors with structured klog.
inputs/node_exporter/exporter.go	Replace node exporter collect error with structured klog.
inputs/node_exporter/collector/textfile.go	Replace textfile collector warnings/errors with klog.
inputs/node_exporter/collector/systemd_linux.go	Replace deprecation warnings with klog.
inputs/node_exporter/collector/supervisord.go	Replace deprecation warning with klog.
inputs/node_exporter/collector/runit.go	Replace deprecation warning with klog.
inputs/node_exporter/collector/qdisc_linux.go	Replace deprecation warnings with klog.
inputs/node_exporter/collector/perf_linux.go	Replace perf collection errors with structured klog.
inputs/node_exporter/collector/ntp.go	Replace deprecation warning with klog.
inputs/node_exporter/collector/netdev_common.go	Replace flag parsing/deprecation logs with structured klog.
inputs/node_exporter/collector/netclass_rtnl_linux.go	Replace info log with klog.
inputs/node_exporter/collector/filesystem_common.go	Replace flag parsing/deprecation logs with structured klog.
inputs/node_exporter/collector/diskstats_linux.go	Replace udev/ATA parse errors with structured klog.
inputs/node_exporter/collector/diskstats_common.go	Replace deprecation/flag logs with structured klog.
inputs/node_exporter/collector/cpu_linux.go	Replace info log with klog.
inputs/node_exporter/collector/collector.go	Replace invalid filter/collector execution logs with structured klog.
inputs/node_exporter/collector/buddyinfo.go	Replace debug log with structured klog.
inputs/nginx_upstream_check/nginx_upstream_check.go	Replace debug/error logs with structured klog.
inputs/nginx/nginx.go	Replace nginx gather/debug/close errors with structured klog.
inputs/netstat_filter/netstat_filter.go	Replace netstat filter errors with structured klog.
inputs/netstat/netstat.go	Replace netstat errors/warnings with structured klog.
inputs/net/net.go	Replace net IO/interface errors with structured klog.
inputs/nats/nats.go	Replace NATS gather errors/debug with structured klog.
inputs/mysql/table_size.go	Replace mysql query/scan errors with structured klog.
inputs/mysql/slave_status.go	Replace mysql replica/slave status errors with structured klog.
inputs/mysql/schema_size.go	Replace mysql query/scan errors with structured klog.
inputs/mysql/processlist_by_user.go	Replace mysql query/scan errors with structured klog.
inputs/mysql/processlist.go	Replace mysql query/scan warnings/errors with structured klog.
inputs/mysql/mysql.go	Replace mysql open/ping errors with structured klog.
inputs/mysql/global_variables.go	Replace mysql query errors with structured klog.
inputs/mysql/global_status.go	Replace mysql query errors with structured klog.
inputs/mysql/engine_innodb.go	Replace mysql query/scan errors with structured klog.
inputs/mysql/binlog.go	Replace mysql binlog query/shape errors with structured klog.
inputs/mtail/mtail.go	Replace mtail init/gather errors with structured klog.
inputs/mtail/internal/tailer/tail.go	Replace tailer polling/glob errors with structured klog.
inputs/mtail/internal/tailer/logstream/socketstream.go	Replace socket stream errors with structured klog.
inputs/mtail/internal/tailer/logstream/logstream.go	Replace parse-url debug logging with klog V-level.
inputs/mtail/internal/tailer/logstream/fifostream.go	Replace FIFO open/close errors with structured klog.
inputs/mtail/internal/tailer/logstream/dgramstream.go	Replace dgram close errors with structured klog.
inputs/mtail/internal/tailer/logstream/cancel.go	Replace cancel/debug logs with klog V-level + structured errors.
inputs/mtail/internal/runtime/vm/vm.go	Replace VM runtime/error trace logs with structured klog.
inputs/mtail/internal/runtime/compiler/types/types.go	Replace unexpected-type warning with klog.
inputs/mtail/internal/runtime/compiler/parser/lexer.go	Replace unread-rune error with structured klog.
inputs/mtail/internal/runtime/compiler/compiler.go	Replace AST debug logging with klog V-level.
inputs/mtail/internal/runtime/compiler/codegen/codegen.go	Replace incomplete-type warnings with klog.
inputs/mtail/internal/runtime/compiler/checker/checker.go	Replace checker warnings with klog.
inputs/mtail/internal/mtail/mtail.go	Replace compile-only log with structured klog.
inputs/mtail/internal/mtail/httpstatus.go	Replace status write errors with structured klog.
inputs/mtail/internal/metrics/store.go	Replace store GC loop logs with structured klog.
inputs/mtail/internal/metrics/metric.go	Replace remove-oldest warning with klog.
inputs/mtail/internal/exporter/prometheus.go	Replace metric construction errors with structured klog.
inputs/mtail/internal/exporter/json.go	Replace JSON export errors with structured klog.
inputs/mtail/internal/exporter/export.go	Replace push/export loop logs with structured klog.
inputs/mongodb/mongodb.go	Replace mongodb collect error with structured klog.
inputs/mem/mem.go	Replace vmstat error logging with structured klog.
inputs/linux_sysctl_fs/linux_sysctl_fs_linux.go	Replace sysctl gather errors with structured klog.
inputs/ldap/ldap.go	Replace ldap connect/search/gather errors with structured klog.
inputs/kubernetes/kubernetes.go	Replace kubelet summary/podinfo errors with structured klog.
inputs/kernel_vmstat/kernel_vmstat.go	Replace vmstat read/parse debug logs with structured klog.
inputs/kernel/kernel.go	Replace kernel stat read/parse errors with structured klog.
inputs/kafka/kafka.go	Resolve klog name conflict; keep go-kit logger for exporter and use klog for errors.
inputs/jolokia_proxy/jolokia_proxy.go	Replace client creation/gather logs with structured klog.
inputs/jolokia_agent/jolokia_agent.go	Replace client creation/gather logs with structured klog.
inputs/jolokia/gatherer.go	Replace point generation errors with structured klog.
inputs/ipvs/ipvs_linux_amd64.go	Replace IPVS handle/service errors with structured klog.
inputs/iptables/iptables.go	Replace config/gather errors with structured klog.
inputs/ipmi/instances.go	Replace descriptor/label/metric errors with structured klog.
inputs/ipmi/exporter/freeipmi/freeipmi.go	Replace pipe/execute/cleanup logs with structured klog.
inputs/ipmi/exporter/collector_sm_lan_mode.go	Replace LAN mode collector errors with structured klog.
inputs/ipmi/exporter/collector_sel.go	Replace SEL collector errors with structured klog.
inputs/ipmi/exporter/collector_notwindows.go	Replace debug timing/collector logs with klog V-level.
inputs/ipmi/exporter/collector_ipmi.go	Replace sensor collection logs with structured klog.
inputs/ipmi/exporter/collector_dcmi.go	Replace DCMI collector errors with structured klog.
inputs/ipmi/exporter/collector_chassis.go	Replace chassis collector errors with structured klog.
inputs/ipmi/exporter/collector_bmc.go	Replace BMC collector errors with structured klog.
inputs/inputs.go	Add logger-aware initializer path (InitWithLogger) via updated MayInit.
inputs/haproxy/haproxy.go	Replace exporter collect error with structured klog.
inputs/hadoop/hadoop.go	Replace component fetch errors with structured klog.
inputs/greenplum/greenplum.go	Replace parse error logs with structured klog.
inputs/googlecloud/instances.go	Replace client close / nil client / list/read errors with structured klog.
inputs/gnmi/gnmi.go	Replace init/start debug/warn logs with structured klog.
inputs/filecount/filecount.go	Replace walk/filter errors with structured klog.
inputs/exec/exec.go	Replace exec glob/parse/run/parse errors with structured klog.
inputs/ethtool/namespace_linux.go	Replace namespace errors with structured klog.
inputs/ethtool/ethtool_notlinux.go	Replace unsupported-platform error with klog.
inputs/elasticsearch/pkg/roundtripper/roundtripper.go	Replace AWS signing transport errors with structured klog.
inputs/elasticsearch/collector/util.go	Replace response close errors with structured klog.
inputs/elasticsearch/collector/tasks.go	Replace response close errors with structured klog.
inputs/elasticsearch/collector/shards.go	Replace cluster-info loop and fetch errors with klog.
inputs/elasticsearch/collector/nodes.go	Replace response close/fetch errors with structured klog.
inputs/elasticsearch/collector/indices_settings.go	Replace response close/fetch errors with structured klog.
inputs/elasticsearch/collector/indices_mappings.go	Replace read/close/fetch errors with structured klog.
inputs/elasticsearch/collector/indices.go	Replace alias/fetch errors with structured klog.
inputs/elasticsearch/collector/collector.go	Replace collector success/failure logs with structured klog.
inputs/elasticsearch/collector/cluster_stats.go	Replace response close/fetch errors with structured klog.
inputs/elasticsearch/collector/cluster_health_indices.go	Replace response close/fetch errors with structured klog.
inputs/elasticsearch/collector/cluster_health.go	Replace response close/fetch errors with structured klog.
inputs/elasticsearch/collector/categraf_utils.go	Replace response close errors with structured klog.
inputs/dns_query/dns_query.go	Replace DNS detection/query errors with structured klog.
inputs/dmesg/dmesg.go	Replace kmsg open/read errors with structured klog.
inputs/diskio/diskio.go	Replace diskio gather errors with structured klog.
inputs/disk/disk.go	Replace disk usage errors with structured klog.
inputs/cpu/cpu.go	Replace CPU gather warnings/errors with structured klog.
inputs/consul/consul.go	Replace consul gather error with structured klog.
inputs/conntrack/conntrack.go	Replace conntrack read/parse/no-metrics errors with structured klog.
inputs/collector.go	Replace metrics collect logging with structured klog.
inputs/chrony/chrony.go	Replace chrony run/parse/no-metrics errors with klog.
inputs/bind/bind.go	Replace bind parse/gather logs with klog.
inputs/aliyun/internal/manager/cms.go	Replace CMS request debug/error logs with structured klog.
ibex/tasks.go	Replace unknown action warning with klog warning.
ibex/heartbeat.go	Replace heartbeat lifecycle/rpc/message logs with structured klog.
heartbeat/platform/platform_darwin.go	Replace Rosetta detection logs with klog.
heartbeat/memory/memory.go	Replace parse warnings with klog warnings.
config/urllabel.go	Replace debug logging of URL label templates/pairs with klog V-level.
config/hostname.go	Replace update-loop errors with structured klog.
config/config_test.go	Add unit tests for log.level/log.verbosity resolution behavior.
conf/config.toml	Document and add log.level + log.verbosity settings.
api/server.go	Replace server startup log with structured klog.
api/router_opentsdb.go	Replace opentsdb clean/convert/error logs with structured klog.
api/router_falcon.go	Replace falcon forwarder error logs with structured klog.
agent/update/update_linux.go	Replace updater logs with structured klog.
agent/prometheus_agent.go	Replace module lifecycle logs with klog.
agent/metrics_reader.go	Replace debug logs and panic reporting with structured klog.
agent/install/service_linux.go	Replace timeout/path error logs with structured klog.
agent/ibex_agent.go	Replace disabled-module log with klog.
agent/agent.go	Replace agent/module lifecycle logs with structured klog.

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