CoreDNS インテグレーションのメトリクス

CoreDNS の監視に使う Datadog の公式インテグレーションです。収集するメトリクスは 119 件あります。

2026-04-15 時点の定義

公式の紹介文 (英語)

CoreDNS collects DNS metrics in Kubernetes.

種別の内訳

count (集計間隔内の発生回数): 83 件
gauge (その時点の値): 36 件

メトリクスの一覧

説明は公式の定義の英文をそのまま載せています。

メトリクス	種別	単位
`coredns.acl.allowed_requests`[OpenMetrics V1] Counter of DNS requests being allowed.	count	request
`coredns.acl.allowed_requests.count`[OpenMetrics V2] Counter of DNS requests being allowed.	count	request
`coredns.acl.blocked_requests`[OpenMetrics V1] Counter of DNS requests being blocked.	count	request
`coredns.acl.blocked_requests.count`[OpenMetrics V2] Counter of DNS requests being blocked.	count	request
`coredns.autopath.success_count`[OpenMetrics V1] Counter of requests that did autopath.	count	request
`coredns.autopath.success_count.count`[OpenMetrics V2] Counter of requests that did autopath.	count	request
`coredns.build_info`[OpenMetrics V1 and V2] A metric with a constant '1' value labeled by version, revision, and goversion from which CoreDNS was built.	gauge	-
`coredns.cache_drops_count`[OpenMetrics V1] Counter of responses excluded from the cache due to request/response question name mismatch.	count	response
`coredns.cache_drops_count.count`[OpenMetrics V2] Counter of responses excluded from the cache due to request/response question name mismatch.	count	response
`coredns.cache_hits_count`[OpenMetrics V1] Counter of cache hits by cache type	count	hit
`coredns.cache_hits_count.count`[OpenMetrics V2] Counter of cache hits by cache type	count	hit
`coredns.cache_misses_count`[OpenMetrics V1] Counter of cache misses.	count	miss
`coredns.cache_misses_count.count`[OpenMetrics V2] Counter of cache misses.	count	miss
`coredns.cache_prefetch_count`[OpenMetrics V1] The number of time the cache has prefetched a cached item.	count	-
`coredns.cache_prefetch_count.count`[OpenMetrics V2] The number of time the cache has prefetched a cached item.	count	-
`coredns.cache_request_count`[OpenMetrics V1] Counter of cache requests.	count	request
`coredns.cache_request_count.count`[OpenMetrics V2] Counter of cache requests.	count	request
`coredns.cache_size.count`[OpenMetrics V1 and V2]	gauge	entry
`coredns.cache_stale_count`[OpenMetrics V1] Counter of requests served from stale cache entries.	count	request
`coredns.cache_stale_count.count`[OpenMetrics V2] Counter of requests served from stale cache entries.	count	request
`coredns.dnssec.cache_hits`[OpenMetrics V1] Counter of cache hits.	count	hit
`coredns.dnssec.cache_hits.count`[OpenMetrics V2] Counter of cache hits.	count	hit
`coredns.dnssec.cache_misses`[OpenMetrics V1] Counter of cache misses.	count	miss
`coredns.dnssec.cache_misses.count`[OpenMetrics V2] Counter of cache misses.	count	miss
`coredns.dnssec.cache_size`[OpenMetrics V1 and V2] Total elements in the cache, type is signature.	gauge	-
`coredns.forward_healthcheck_broken_count`[OpenMetrics V1] counter of when all upstreams are unhealthy	count	entry
`coredns.forward_healthcheck_broken_count.count`[OpenMetrics V2] counter of when all upstreams are unhealthy	count	entry
`coredns.forward_healthcheck_failure_count`[OpenMetrics V1] number of failed health checks per upstream	count	entry
`coredns.forward_healthcheck_failure_count.count`[OpenMetrics V2] number of failed health checks per upstream	count	entry
`coredns.forward_max_concurrent_rejects`[OpenMetrics V1] Counter of the number of queries rejected because the concurrent queries were at maximum.	count	query
`coredns.forward_max_concurrent_rejects.count`[OpenMetrics V2] Counter of the number of queries rejected because the concurrent queries were at maximum.	count	query
`coredns.forward_request_count`[OpenMetrics V1] query count per upstream	count	request
`coredns.forward_request_count.count`[OpenMetrics V2] query count per upstream	count	request
`coredns.forward_request_duration.seconds.bucket`[OpenMetrics V2] duration per upstream interaction	count	second
`coredns.forward_request_duration.seconds.count`[OpenMetrics V1 and V2] duration per upstream interaction	count	second
`coredns.forward_request_duration.seconds.sum`[OpenMetrics V1 and V2] duration per upstream interaction	count	second
`coredns.forward_response_rcode_count`[OpenMetrics V1] count of RCODEs per upstream	count	response
`coredns.forward_response_rcode_count.count`[OpenMetrics V2] count of RCODEs per upstream	count	response
`coredns.forward_sockets_open`[OpenMetrics V1 and V2] number of sockets open per upstream	gauge	connection
`coredns.go.gc_duration_seconds.count`[OpenMetrics V1 and V2] Count of the GC invocation durations.	count	second
`coredns.go.gc_duration_seconds.quantile`[OpenMetrics V1 and V2] Quantiles of the GC invocation durations.	gauge	second
`coredns.go.gc_duration_seconds.sum`[OpenMetrics V1 and V2] Sum of the GC invocation durations.	count	second
`coredns.go.goroutines`[OpenMetrics V1 and V2] Number of goroutines that currently exist.	gauge	thread
`coredns.go.info`[OpenMetrics V1 and V2] Information about the Go environment.	gauge	-
`coredns.go.memstats.alloc_bytes`[OpenMetrics V1 and V2] Number of bytes allocated and still in use.	gauge	byte
`coredns.go.memstats.alloc_bytes_total`[OpenMetrics V1] Total number of bytes allocated even if freed.	count	byte
`coredns.go.memstats.buck_hash_sys_bytes`[OpenMetrics V1 and V2] Number of bytes used by the profiling bucket hash table.	gauge	byte
`coredns.go.memstats.frees_total`[OpenMetrics V1] Total number of frees.	count	-
`coredns.go.memstats.frees_total.count`[OpenMetrics V2] Total number of frees.	count	-
`coredns.go.memstats.gc_cpu_fraction`[OpenMetrics V1 and V2] CPU taken up by GC	gauge	percent
`coredns.go.memstats.gc_sys_bytes`[OpenMetrics V1 and V2] Number of bytes used for garbage collection system metadata.	gauge	byte
`coredns.go.memstats.heap_alloc_bytes`[OpenMetrics V1 and V2] Bytes allocated to the heap	gauge	byte
`coredns.go.memstats.heap_idle_bytes`[OpenMetrics V1 and V2] Number of idle bytes in the heap	gauge	byte
`coredns.go.memstats.heap_inuse_bytes`[OpenMetrics V1 and V2] Number of Bytes in the heap	gauge	byte
`coredns.go.memstats.heap_objects`[OpenMetrics V1 and V2] Number of objects in the heap	gauge	object
`coredns.go.memstats.heap_released_bytes`[OpenMetrics V1 and V2] Number of bytes released to the system in the last gc	gauge	byte
`coredns.go.memstats.heap_released_bytes.count`[OpenMetrics V2] Count of bytes released to the system in the last gc	count	byte
`coredns.go.memstats.heap_sys_bytes`[OpenMetrics V1 and V2] Number of bytes used by the heap	gauge	byte
`coredns.go.memstats.last_gc_time_seconds`[OpenMetrics V1 and V2] Length of last GC	gauge	second
`coredns.go.memstats.lookups_total`[OpenMetrics V1] Number of lookups	count	operation
`coredns.go.memstats.lookups_total.count`[OpenMetrics V2] Number of lookups	count	operation
`coredns.go.memstats.mallocs_total`[OpenMetrics V1] Number of mallocs	count	operation
`coredns.go.memstats.mallocs_total.count`[OpenMetrics V2] Number of mallocs	count	operation
`coredns.go.memstats.mcache_inuse_bytes`[OpenMetrics V1 and V2] Number of bytes in use by mcache structures.	gauge	byte
`coredns.go.memstats.mcache_sys_bytes`[OpenMetrics V1 and V2] Number of bytes used for mcache structures obtained from system.	gauge	byte
`coredns.go.memstats.mspan_inuse_bytes`[OpenMetrics V1 and V2] Number of bytes in use by mspan structures.	gauge	byte
`coredns.go.memstats.mspan_sys_bytes`[OpenMetrics V1 and V2] Number of bytes used for mspan structures obtained from system.	gauge	byte
`coredns.go.memstats.next_gc_bytes`[OpenMetrics V1 and V2] Number of heap bytes when next garbage collection will take place	gauge	byte
`coredns.go.memstats.other_sys_bytes`[OpenMetrics V1 and V2] Number of bytes used for other system allocations	gauge	byte
`coredns.go.memstats.stack_inuse_bytes`[OpenMetrics V1 and V2] Number of bytes in use by the stack allocator	gauge	byte
`coredns.go.memstats.stack_sys_bytes`[OpenMetrics V1 and V2] Number of bytes obtained from system for stack allocator	gauge	byte
`coredns.go.memstats.sys_bytes`[OpenMetrics V1 and V2] Number of bytes obtained from system	gauge	byte
`coredns.go.threads`[OpenMetrics V1 and V2] Number of OS threads created.	gauge	thread
`coredns.grpc.request_count`[OpenMetrics V1] Query count per upstream.	count	-
`coredns.grpc.request_count.count`[OpenMetrics V2] Query count per upstream.	count	-
`coredns.grpc.response_rcode_count`[OpenMetrics V1] Count of RCODEs per upstream. and we are randomly (this always uses the random policy) spraying to an upstream.	count	-
`coredns.grpc.response_rcode_count.count`[OpenMetrics V2] Count of RCODEs per upstream. and we are randomly (this always uses the random policy) spraying to an upstream.	count	-
`coredns.health_request_duration.bucket`[OpenMetrics V2] Sample for the histogram of the time (in seconds) each request took.	count	-
`coredns.health_request_duration.count`[OpenMetrics V1 and V2] Count for the histogram of the time (in seconds) each request took.	count	-
`coredns.health_request_duration.sum`[OpenMetrics V1 and V2] Sum for the histogram of the time (in seconds) each request took.	count	-
`coredns.hosts.entries_count`[OpenMetrics V1 and V2] The combined number of entries in hosts and Corefile.	gauge	-
`coredns.hosts.reload_timestamp`[OpenMetrics V1 and V2] The timestamp of the last reload of hosts file.	gauge	second
`coredns.panic_count.count`[OpenMetrics V1 and V2]	count	entry
`coredns.plugin_enabled`[OpenMetrics V1 and V2] A metric that indicates whether a plugin is enabled on per server and zone basis.	gauge	-
`coredns.process.cpu_seconds_total`[OpenMetrics V1 and V2] Total user and system CPU time spent in seconds.	count	second
`coredns.process.cpu_seconds_total.count`[OpenMetrics V2] Count of user and system CPU time spent in seconds.	count	second
`coredns.process.max_fds`[OpenMetrics V1 and V2] Maximum number of open file descriptors.	gauge	file
`coredns.process.open_fds`[OpenMetrics V1 and V2] Number of open file descriptors.	gauge	file
`coredns.process.resident_memory_bytes`[OpenMetrics V1 and V2] Resident memory size in bytes.	gauge	byte
`coredns.process.start_time_seconds`[OpenMetrics V1 and V2] Start time of the process since unix epoch in seconds.	gauge	second
`coredns.process.virtual_memory_bytes`[OpenMetrics V1 and V2] Virtual memory size in bytes.	gauge	byte
`coredns.proxy_request_count`[OpenMetrics V1] query count per upstream.	count	request
`coredns.proxy_request_count.count`[OpenMetrics V2] query count per upstream.	count	request
`coredns.proxy_request_duration.seconds.bucket`[OpenMetrics V2] sample of duration per upstream interaction	count	second
`coredns.proxy_request_duration.seconds.count`[OpenMetrics V1 and V2] duration per upstream interaction	count	second
`coredns.proxy_request_duration.seconds.sum`[OpenMetrics V1 and V2] duration per upstream interaction	count	second
`coredns.reload.failed_count`[OpenMetrics V1] Counts the number of failed reload attempts.	count	-
`coredns.reload.failed_count.count`[OpenMetrics V2] Counts the number of failed reload attempts.	count	-
`coredns.request_count`[OpenMetrics V1] total query count.	count	request
`coredns.request_count.count`[OpenMetrics V2] total query count.	count	request
`coredns.request_duration.seconds.bucket`[OpenMetrics V2] sample duration to process each query	count	second
`coredns.request_duration.seconds.count`[OpenMetrics V1 and V2] duration to process each query	count	second
`coredns.request_duration.seconds.sum`[OpenMetrics V1 and V2] duration to process each query	count	second
`coredns.request_size.bytes.bucket`[OpenMetrics V2] sample size of the request in bytes	count	byte
`coredns.request_size.bytes.count`[OpenMetrics V1 and V2] size of the request in bytes	count	byte
`coredns.request_size.bytes.sum`[OpenMetrics V1 and V2] size of the request in bytes	count	byte
`coredns.request_type_count`[OpenMetrics V1] counter of queries per zone and type	count	-
`coredns.request_type_count.count`[OpenMetrics V2] counter of queries per zone and type	count	-
`coredns.response_code_count`[OpenMetrics V1] number of responses per zone and rcode	count	-
`coredns.response_code_count.count`[OpenMetrics V2] number of responses per zone and rcode	count	-
`coredns.response_size.bytes.bucket`[OpenMetrics V2] sample size of the request in bytes	count	byte
`coredns.response_size.bytes.count`[OpenMetrics V1 and V2] size of the request in bytes	count	byte
`coredns.response_size.bytes.sum`[OpenMetrics V1 and V2] size of the request in bytes	count	byte
`coredns.template.failures_count`[OpenMetrics V1] The number of times the Go templating failed.	count	error
`coredns.template.failures_count.count`[OpenMetrics V2] The number of times the Go templating failed.	count	error
`coredns.template.matches_count`[OpenMetrics V1] The total number of matched requests by regex.	count	-
`coredns.template.matches_count.count`[OpenMetrics V2] The total number of matched requests by regex.	count	-
`coredns.template.rr_failures_count`[OpenMetrics V1] The number of times the templated resource record was invalid and could not be parsed.	count	error
`coredns.template.rr_failures_count.count`[OpenMetrics V2] The number of times the templated resource record was invalid and could not be parsed.	count	error

公式ドキュメント

CoreDNS インテグレーションの公式ドキュメント

メトリクスの名前と説明は Datadog の公式インテグレーションの定義 (Copyright Datadog, Inc.・BSD-3-Clause) を英文のまま載せています。利用条件の全文はサイトについてにあります。

公式の紹介文 (英語)

種別の内訳

メトリクスの一覧

公式ドキュメント

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