{"id":35577,"date":"2023-08-06T16:37:20","date_gmt":"2023-04-28T23:56:28","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%85%b3%e4%ba%8ecoredns%e7%9a%84%e7%9b%91%e6%8e%a7%e6%96%b9%e6%b3%95\/"},"modified":"2024-04-30T17:16:05","modified_gmt":"2024-04-30T09:16:05","slug":"%e5%85%b3%e4%ba%8ecoredns%e7%9a%84%e7%9b%91%e6%8e%a7%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%85%b3%e4%ba%8ecoredns%e7%9a%84%e7%9b%91%e6%8e%a7%e6%96%b9%e6%b3%95\/","title":{"rendered":"\u5173\u4e8eCoreDNS\u7684\u76d1\u63a7\u65b9\u6cd5"},"content":{"rendered":"<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d246a37434c4406c2eb75\/0-0.png\" alt=\"\" \/><\/div>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Kubernetes\u306eCoreDNS\u3068\u306f\uff1f<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Kubernetes\u306eCoreDNS\u3092\u76e3\u8996\u3059\u308b\u65b9\u6cd5\u306f\uff1f<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Kubernetes\u306eCoreDNS\u3092\u76e3\u8996\u3059\u308b\uff1a\u3069\u306e\u30e1\u30c8\u30ea\u30af\u30b9\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u304b\uff1f<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u307e\u3068\u3081<\/ul>\n<p>&nbsp;<\/p>\n<h2>Kubernetes CoreDNS \u662f\u4ec0\u4e48\uff1f<\/h2>\n<p><a>\u6838\u5fc3DNS<\/a><\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d246a37434c4406c2eb75\/7-0.png\" alt=\"\" \/><\/div>\n<p>&nbsp;<\/p>\n<p>kubedns:\u00a0Kubernetes\u7528\u306eSkyDNS\u306e\u5b9f\u88c5\u3067\u3059\u3002Kubernetes\u30af\u30e9\u30b9\u30bf\u30fc\u5185\u306eDNS\u89e3\u6c7a\u3092\u62c5\u5f53\u3057\u307e\u3059\u3002Kubernetes\u306eAPI\u3092\u76e3\u8996\u3057\u3001\u9069\u5207\u306aDNS\u30ec\u30b3\u30fc\u30c9\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<p>dnsmasq:\u00a0SkyDNS\u306e\u89e3\u6c7a\u8981\u6c42\u306e\u305f\u3081\u306eDNS\u30ad\u30e3\u30c3\u30b7\u30e5\u6a5f\u69cb\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<p>sidecar:\u00a0\u3053\u306e\u30b3\u30f3\u30c6\u30ca\u306f\u3001\u30e1\u30c8\u30ea\u30af\u30b9\u3092\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3057\u3001DNS\u30b5\u30fc\u30d3\u30b9\u306e\u30d8\u30eb\u30b9\u30c1\u30a7\u30c3\u30af\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<p><strong>Dnsmasq \u7684\u4e2d\u6587\u91ca\u4e49<\/strong><strong>\u8fd9\u4e2a\u95ee\u9898\u5bfc\u81f4\u4e86\u5b89\u5168\u6f0f\u6d1e\u7684\u51fa\u73b0\u3002<\/strong><strong>\u6211\u4eec\u6b63\u5728\u89e3\u51b3 kube-dns \u7684\u5916\u90e8\u670d\u52a1\u7528\u5b58\u6839\u57df\u540d\u7684\u4e00\u4e9b\u5176\u4ed6\u95ee\u9898\u3002<\/strong><\/p>\n<pre class=\"post-pre\"><code># kubectl get ep kube-dns -n kube-system -o json |jq -r \".subsets\"[  {    \"addresses\": [      {        \"ip\": \"192.169.107.100\",        \"nodeName\": \"k8s-control-2.lab.example.com\",        \"targetRef\": {        \"kind\": \"Pod\",        \"name\": \"coredns-565d847f94-rz4b6\",        \"namespace\": \"kube-system\",        \"uid\": \"c1b62754-4740-49ca-b506-3f40fb681778\"      }    },    {      \"ip\": \"192.169.203.46\",      \"nodeName\": \"k8s-control-3.lab.example.com\",      \"targetRef\": {        \"kind\": \"Pod\",        \"name\": \"coredns-565d847f94-8xqxg\",        \"namespace\": \"kube-system\",        \"uid\": \"bec3ca63-f09a-4007-82e9-0e147e8587de\"      }    }  ],  \"ports\": [    {      \"name\": \"dns-tcp\",      \"port\": 53,      \"protocol\": \"TCP\"    },    {      \"name\": \"dns\",      \"port\": 53,      \"protocol\": \"UDP\"    },    {      \"name\": \"metrics\",      \"port\": 9153,      \"protocol\": \"TCP\"     }   ]  }]<\/code><\/pre>\n<p>&nbsp;<\/p>\n<h2>\u5982\u4f55\u76d1\u89c6 Kubernetes \u4e0a\u7684 CoreDNS\uff1f<\/h2>\n<p><code>\/metrics\u6307\u6807<\/code><code>\/\u6307\u6807<\/code><\/p>\n<h3>\u624b\u52a8\u8bbf\u95ee\u7ec8\u7aef\u8282\u70b9<\/h3>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code># curl http:\/\/192.169.203.46:9153\/metrics# HELP coredns_build_info A metric with a constant '1' value labeled by version, revision, and goversion from which CoreDNS was built.# TYPE coredns_build_info gaugecoredns_build_info{goversion=\"go1.18.2\",revision=\"45b0a11\",version=\"1.9.3\"} 1# HELP coredns_cache_entries The number of elements in the cache.# TYPE coredns_cache_entries gaugecoredns_cache_entries{server=\"dns:\/\/:53\",type=\"denial\",zones=\".\"} 46coredns_cache_entries{server=\"dns:\/\/:53\",type=\"success\",zones=\".\"} 9# HELP coredns_cache_hits_total The count of cache hits.# TYPE coredns_cache_hits_total countercoredns_cache_hits_total{server=\"dns:\/\/:53\",type=\"denial\",zones=\".\"} 6471coredns_cache_hits_total{server=\"dns:\/\/:53\",type=\"success\",zones=\".\"} 6596# HELP coredns_cache_misses_total The count of cache misses. Deprecated, derive misses from cache hits\/requests counters.# TYPE coredns_cache_misses_total countercoredns_cache_misses_total{server=\"dns:\/\/:53\",zones=\".\"} 1951# HELP coredns_cache_requests_total The count of cache requests.# TYPE coredns_cache_requests_total countercoredns_cache_requests_total{server=\"dns:\/\/:53\",zones=\".\"} 15018# HELP coredns_dns_request_duration_seconds Histogram of the time (in seconds) each request took per zone.# TYPE coredns_dns_request_duration_seconds histogramcoredns_dns_request_duration_seconds_bucket{server=\"dns:\/\/:53\",zone=\".\",le=\"0.00025\"} 14098coredns_dns_request_duration_seconds_bucket{server=\"dns:\/\/:53\",zone=\".\",le=\"0.0005\"} 14836coredns_dns_request_duration_seconds_bucket{server=\"dns:\/\/:53\",zone=\".\",le=\"0.001\"} 14850coredns_dns_request_duration_seconds_bucket{server=\"dns:\/\/:53\",zone=\".\",le=\"0.002\"} 14856coredns_dns_request_duration_seconds_bucket{server=\"dns:\/\/:53\",zone=\".\",le=\"0.004\"} 14857coredns_dns_request_duration_seconds_bucket{server=\"dns:\/\/:53\",zone=\".\",le=\"0.008\"} 14870coredns_dns_request_duration_seconds_bucket{server=\"dns:\/\/:53\",zone=\".\",le=\"0.016\"} 14879coredns_dns_request_duration_seconds_bucket{server=\"dns:\/\/:53\",zone=\".\",le=\"0.032\"} 14883coredns_dns_request_duration_seconds_bucket{server=\"dns:\/\/:53\",zone=\".\",le=\"0.064\"} 14884coredns_dns_request_duration_seconds_bucket{server=\"dns:\/\/:53\",zone=\".\",le=\"0.128\"} 14884coredns_dns_request_duration_seconds_bucket{server=\"dns:\/\/:53\",zone=\".\",le=\"0.256\"} 14885coredns_dns_request_duration_seconds_bucket{server=\"dns:\/\/:53\",zone=\".\",le=\"0.512\"} 14886coredns_dns_request_duration_seconds_bucket{server=\"dns:\/\/:53\",zone=\".\",le=\"1.024\"} 14887coredns_dns_request_duration_seconds_bucket{server=\"dns:\/\/:53\",zone=\".\",le=\"2.048\"} 14903coredns_dns_request_duration_seconds_bucket{server=\"dns:\/\/:53\",zone=\".\",le=\"4.096\"} 14911coredns_dns_request_duration_seconds_bucket{server=\"dns:\/\/:53\",zone=\".\",le=\"8.192\"} 15018coredns_dns_request_duration_seconds_bucket{server=\"dns:\/\/:53\",zone=\".\",le=\"+Inf\"} 15018coredns_dns_request_duration_seconds_sum{server=\"dns:\/\/:53\",zone=\".\"} 698.531992215999coredns_dns_request_duration_seconds_count{server=\"dns:\/\/:53\",zone=\".\"} 15018\u2026(output truncated)<\/code><\/pre>\n<p><code>\/\u5ea6\u91cf\u6307\u6807<\/code><\/p>\n<pre class=\"post-pre\"><code># kubectl get svc -n kube-systemNAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGEkube-dns ClusterIP 10.96.0.10 &lt;none&gt; 53\/UDP,53\/TCP,9153\/TCP 129d# kubectl exec -it my-pod -n default -- \/bin\/bash# curl http:\/\/kube-dns.kube-system.svc:9153\/metrics<\/code><\/pre>\n<p>&nbsp;<\/p>\n<h3>\u4f7f\u7528Prometheus\u7684\u914d\u7f6e\u65b9\u6cd5\u6765\u6293\u53d6CoreDNS\u6307\u6807<\/h3>\n<p><code>\u666e\u7f57\u7c73\u4fee\u65af.yml<\/code><a>\u7ec8\u7aef\u70b9\u89d2\u8272<\/a><\/p>\n<p><code>\u666e\u7f57\u7c73\u4fee\u65af\u914d\u7f6e\u6587\u4ef6.yml<\/code><code>\u914d\u7f6e\u6620\u5c04<\/code><\/p>\n<pre class=\"post-pre\"><code># kubectl edit cm prometheus-server -n monitoring -o yaml<\/code><\/pre>\n<p><code>\u722c\u53d6\u914d\u7f6e<\/code><\/p>\n<pre class=\"post-pre\"><code>- honor_labels: true  job_name: kubernetes-service-endpoints  kubernetes_sd_configs:   - role: endpoints  relabel_configs:  - action: keep    regex: true    source_labels:    - __meta_kubernetes_service_annotation_prometheus_io_scrape  - action: drop    regex: true    source_labels:    - __meta_kubernetes_service_annotation_prometheus_io_scrape_slow  - action: replace    regex: (https?)    source_labels:    - __meta_kubernetes_service_annotation_prometheus_io_scheme    target_label: scheme  - action: replace    regex: (.+)    source_labels:    - __meta_kubernetes_service_annotation_prometheus_io_path    target_label: metrics_path  - action: replace    regex: (.+?)(?::\\d+)?;(\\d+)    replacement: $1:$2    source_labels:    - address    - __meta_kubernetes_service_annotation_prometheus_io_port    target_label: address  - action: labelmap    regex: _meta_kubernetes_service_annotation_prometheus_io_param(.+)    replacement: _param$1  - action: labelmap    regex: _meta_kubernetes_service_label(.+)  - action: replace    source_labels:    - __meta_kubernetes_namespace    target_label: namespace  - action: replace    source_labels:    - __meta_kubernetes_service_name    target_label: service  - action: replace    source_labels:    - __meta_kubernetes_pod_node_name    target_label: node<\/code><\/pre>\n<p>&nbsp;<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d246a37434c4406c2eb75\/59-0.png\" alt=\"\" \/><\/div>\n<p>&nbsp;<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d246a37434c4406c2eb75\/64-0.png\" alt=\"\" \/><\/div>\n<p>&nbsp;<\/p>\n<h3>\u9700\u8981\u68c0\u67e5\u54ea\u4e9b\u6838\u5fc3DNS\u9876\u7ea7\u6307\u6807\uff1f<\/h3>\n<p>\u514d\u8d23\u58f0\u660e\uff1aCoreDNS\u6307\u6807\u53ef\u80fd\u56e0Kubernetes\u7248\u672c\u548c\u5e73\u53f0\u7684\u4e0d\u540c\u800c\u6709\u6240\u5dee\u5f02\u3002\u672c\u6587\u4e2d\u4f7f\u7528\u7684\u662fKubernetes 1.25\u548cCoreDNS 1.9.3\u7248\u672c\u3002\u53ef\u4ee5\u5728CoreDNS\u7684\u62a5\u544a\u4e2d\u67e5\u770b\u60a8\u6240\u4f7f\u7528\u7248\u672c\u7684\u53ef\u7528\u6307\u6807\u3002<\/p>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">CoreDNS\u30ec\u30d7\u30ea\u30ab\u306e\u6570\uff1aKubernetes\u74b0\u5883\u3067\u7a3c\u50cd\u3057\u3066\u3044\u308bCoreDNS\u30ec\u30d7\u30ea\u30ab\u306e\u6570\u3092\u76e3\u8996\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u00a0coredns_build_info \u30e1\u30c8\u30ea\u30af\u30b9\u3092\u30ab\u30a6\u30f3\u30c8\u3059\u308b\u3053\u3068\u3067\u884c\u3048\u307e\u3059\u3002\u3053\u306e\u30e1\u30c8\u30ea\u30af\u30b9\u306f\u3001\u305d\u306e\u3088\u3046\u306aPod\u4e0a\u3067\u52d5\u4f5c\u3057\u3066\u3044\u308bCoreDNS\u306e\u30d3\u30eb\u30c9\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/ul>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code>count(coredns_build_info)<\/code><\/pre>\n<p><a>\u56db\u4e2a\u9ec4\u91d1\u4fe1\u53f7<\/a><\/p>\n<h3>\u9519\u8bef<\/h3>\n<p><strong>\u670d\u52a1\u5931\u8d25<\/strong><strong>\u62d2\u7edd<\/strong><\/p>\n<ul class=\"post-ul\">coredns_dns_responses_total:\u00a0\u3053\u306e\u30ab\u30a6\u30f3\u30bf\u30fc\u306f\u3001CoreDNS\u5fdc\u7b54\u30b3\u30fc\u30c9\u3001\u30cd\u30fc\u30e0\u30b9\u30da\u30fc\u30b9\u3001\u304a\u3088\u3073CoreDNS\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u6570\u306b\u3064\u3044\u3066\u306e\u60c5\u5831\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u5404\u30ec\u30b9\u30dd\u30f3\u30b9\u30b3\u30fc\u30c9\u306e\u30ec\u30fc\u30c8\u3092\u53d6\u5f97\u3057\u305f\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001CoreDNS\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u30a8\u30e9\u30fc\u7387\u3092\u6e2c\u5b9a\u3059\u308b\u305f\u3081\u306b\u5e38\u306b\u6709\u7528\u3067\u3059\u3002<\/ul>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code>sum(rate(coredns_dns_responses_total{instance=~\".*\"}[2m])) by (rcode, instance)<\/code><\/pre>\n<p>&nbsp;<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d246a37434c4406c2eb75\/88-0.png\" alt=\"\" \/><\/div>\n<p>&nbsp;<\/p>\n<h3>\u5ef6\u8fdf<\/h3>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">coredns_dns_request_duration_seconds_bucket: CoreDNS\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u7d99\u7d9a\u6642\u9593\uff08\u79d2\uff09\u3002CoreDNS\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u9593\u3067\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u304c\u3069\u306e\u3088\u3046\u306b\u5206\u5e03\u3057\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u300199\u30d1\u30fc\u30bb\u30f3\u30bf\u30a4\u30eb\u3092\u8a08\u7b97\u3057\u305f\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/ul>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code>histogram_quantile(0.99, sum(rate(coredns_dns_request_duration_seconds_bucket{instance=~\".*\"}[2m])) by (server,zone,le,instance))<\/code><\/pre>\n<p>&nbsp;<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d246a37434c4406c2eb75\/98-0.png\" alt=\"\" \/><\/div>\n<p>&nbsp;<\/p>\n<h3>\u4ea4\u901a\u6d41\u91cf<\/h3>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">coredns_dns_requests_total:\u00a0\u30be\u30fc\u30f3\u3001\u30d7\u30ed\u30c8\u30b3\u30eb\u3001\u30d5\u30a1\u30df\u30ea\u30fc\u3054\u3068\u306eDNS\u30ea\u30af\u30a8\u30b9\u30c8\u30ab\u30a6\u30f3\u30bf\u30fc\u3002\u30bf\u30a4\u30d7\u5225\uff08A\u3001AAAA\uff09\u306eCoreDNS\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u30ec\u30fc\u30c8\u3092\u6e2c\u5b9a\u30fb\u76e3\u8996\u3057\u305f\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002&#8221;A &#8220;\u306fipv4\u30af\u30a8\u30ea\u30fc\u3092\u8868\u3057\u3001&#8221;AAAA &#8220;\u306fipv6\u30af\u30a8\u30ea\u30fc\u3092\u8868\u3057\u307e\u3059\u3002<\/ul>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code>(sum(rate(coredns_dns_requests_total{instance=~\".*\"}[2m])) by (type,instance))<\/code><\/pre>\n<p>&nbsp;<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"image_tooltip\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d246a37434c4406c2eb75\/108-0.png\" alt=\"\" \/><\/div>\n<p>&nbsp;<\/p>\n<h3>\u9971\u548c\u5ea6 d\u00f9)<\/h3>\n<p>&nbsp;<\/p>\n<h3>\u5176\u4ed6<\/h3>\n<p><a>\u7f13\u5b58\u673a\u5236<\/a><\/p>\n<ul class=\"post-ul\">coredns_cache_hits_total:\u00a0\u30ad\u30e3\u30c3\u30b7\u30e5\u30d2\u30c3\u30c8\u30ab\u30a6\u30f3\u30bf\u30fc\u3067\u3059\u3002\u4ee5\u4e0b\u306e\u30af\u30a8\u30ea\u30fc\u3092\u5b9f\u884c\u3057\u3066\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u30d2\u30c3\u30c8\u7387\u3092\u76e3\u8996\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306ePromQL\u30af\u30a8\u30ea\u30fc\u306e\u304a\u304b\u3052\u3067\u3001CoreDNS\u30ad\u30e3\u30c3\u30b7\u30e5\u30d2\u30c3\u30c8\u306e\u62d2\u5426\u7387\u3068\u6210\u529f\u7387\u3092\u7c21\u5358\u306b\u76e3\u8996\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/ul>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code>sum(rate(coredns_cache_hits_total{instance=~\".*\"}[2m])) by (type,instance)<\/code><\/pre>\n<p>&nbsp;<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"image_tooltip\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d246a37434c4406c2eb75\/122-0.png\" alt=\"\" \/><\/div>\n<p>&nbsp;<\/p>\n<h2>\u6982\u62ec<\/h2>\n<p>&nbsp;<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d246a37434c4406c2eb75\/132-0.gif\" alt=\"Thanks to the Sysdig Monitor out-of-the-box dashboards, you'll have all the Kubernetes CoreDNS metrics handy.\" \/><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Kubernetes\u306eCoreDNS\u3068\u306f\uff1f &nbsp; Kubernetes\u306eCoreDNS\u3092\u76e3\u8996\u3059\u308b\u65b9\u6cd5\u306f [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-35577","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5173\u4e8eCoreDNS\u7684\u76d1\u63a7\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5173\u4e8ecoredns\u7684\u76d1\u63a7\u65b9\u6cd5\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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