{"id":450,"date":"2019-07-31T15:28:46","date_gmt":"2019-07-31T07:28:46","guid":{"rendered":"https:\/\/blog.espnlol.com\/?p=450"},"modified":"2022-04-20T18:27:38","modified_gmt":"2022-04-20T10:27:38","slug":"coredns%e9%85%8d%e7%bd%ae%e5%b9%b6%e9%80%92%e5%bd%92%e5%a4%96%e9%83%a8dns","status":"publish","type":"post","link":"https:\/\/blog.espnlol.com\/?p=450","title":{"rendered":"CoreDns\u914d\u7f6e\u5e76\u9012\u5f52\u5916\u90e8dns"},"content":{"rendered":"<h2 id=\"CoreDNS-ConfigMap\u9009\u9879\">CoreDNS ConfigMap\u9009\u9879<\/h2>\n<p>\u5148\u6765\u770b\u770b\u9ed8\u8ba4\u7684CoreDns\u7684\u914d\u7f6e\u6587\u4ef6<\/p>\n<pre class=\"\">Corefile: |\n  .:53 {\n      errors\n      health\n      kubernetes cluster.local in-addr.arpa ip6.arpa {\n         pods insecure\n         upstream\n         fallthrough in-addr.arpa ip6.arpa\n      }\n      prometheus :9153\n      proxy . \/etc\/resolv.conf\n      forward . 10.10.10.10\n      cache 30\n      loop\n      reload\n      loadbalance\n  }<\/pre>\n<figure class=\"highlight plain\"><\/figure>\n<ul>\n<li>error: \u9519\u8bef\u8bb0\u5f55\u5230stdout<\/li>\n<li><a href=\"https:\/\/coredns.io\/plugins\/health\/\" target=\"_blank\" rel=\"external noopener noreferrer\">health<\/a>\uff1aCoreDNS\u7684\u8fd0\u884c\u72b6\u51b5\u62a5\u544a\u4e3a<a href=\"http:\/\/localhost:8080\/health\" target=\"_blank\" rel=\"external noopener noreferrer\">http\uff1a\/\/ localhost\uff1a8080 \/ health<\/a><\/li>\n<li><a href=\"https:\/\/coredns.io\/plugins\/kubernetes\/\" target=\"_blank\" rel=\"external noopener noreferrer\">kubernetes<\/a>\uff1aCoreDNS\u5c06\u6839\u636eKubernetes\u670d\u52a1\u548cpod\u7684IP\u56de\u590dDNS\u67e5\u8be2<\/li>\n<li><a href=\"https:\/\/coredns.io\/plugins\/prometheus\/\" target=\"_blank\" rel=\"external noopener noreferrer\">prometheus<\/a>\uff1aCoreDNS\u7684\u5ea6\u91cf\u6807\u51c6\u53ef\u4ee5\u5728<a href=\"http:\/\/localhost:9090\/metrics\" target=\"_blank\" rel=\"external noopener noreferrer\" data-wplink-url-error=\"true\">http:\/\/localhost:9090\/<\/a>Prometheus\u683c\u5f0f\u7684<a href=\"https:\/\/prometheus.io\/\" target=\"_blank\" rel=\"external noopener noreferrer\">\u6307\u6807<\/a>\u4e2d\u627e\u5230<\/li>\n<li><a href=\"https:\/\/coredns.io\/plugins\/proxy\/\" target=\"_blank\" rel=\"external noopener noreferrer\">proxy<\/a>\uff1a\u4efb\u4f55\u4e0d\u5728Kubernetes\u96c6\u7fa4\u57df\u5185\u7684\u67e5\u8be2\u90fd\u5c06\u8f6c\u53d1\u5230\u9884\u5b9a\u4e49\u7684\u89e3\u6790\u5668\uff08\/etc\/resolv.conf\uff09<\/li>\n<li><a href=\"https:\/\/coredns.io\/plugins\/cache\/\" target=\"_blank\" rel=\"external noopener noreferrer\">cache<\/a>\uff1a\u542f\u7528\u524d\u7aef\u7f13\u5b58<\/li>\n<li><a href=\"https:\/\/coredns.io\/plugins\/loop\/\" target=\"_blank\" rel=\"external noopener noreferrer\">loop<\/a>\uff1a\u68c0\u6d4b\u7b80\u5355\u7684\u8f6c\u53d1\u5faa\u73af\uff0c\u5982\u679c\u627e\u5230\u5faa\u73af\u5219\u505c\u6b62CoreDNS\u8fdb\u7a0b<\/li>\n<li><a href=\"https:\/\/coredns.io\/plugins\/reload\" target=\"_blank\" rel=\"external noopener noreferrer\">reload<\/a>\uff1a\u5141\u8bb8\u81ea\u52a8\u91cd\u65b0\u52a0\u8f7d\u5df2\u66f4\u6539\u7684Corefile\u3002\u7f16\u8f91ConfigMap\u914d\u7f6e\u540e\uff0c\u8bf7\u7b49\u5f85\u4e24\u5206\u949f\u4ee5\u4f7f\u66f4\u6539\u751f\u6548<\/li>\n<li><a href=\"https:\/\/coredns.io\/plugins\/loadbalance\" target=\"_blank\" rel=\"external noopener noreferrer\">loadbalance<\/a>\uff1a\u8fd9\u662f\u4e00\u4e2a\u5faa\u73afDNS\u8d1f\u8f7d\u5747\u8861\u5668\uff0c\u53ef\u4ee5\u5728\u7b54\u6848\u4e2d\u968f\u673a\u5316A\uff0cAAAA\u548cMX\u8bb0\u5f55\u7684\u987a\u5e8f<\/li>\n<\/ul>\n<h2 id=\"\u914d\u7f6e\u5916\u90e8dns\">\u914d\u7f6e\u5916\u90e8dns<\/h2>\n<p>\u6709\u4e9b\u670d\u52a1\u4e0d\u5728kubernetes\u5185\u90e8\uff0c\u5728\u5185\u90e8\u73af\u5883\u5185\u9700\u8981\u901a\u8fc7dns\u53bb\u8bbf\u95ee,\u540d\u79f0\u540e\u7f00\u4e3atest.com<\/p>\n<pre class=\"\">  test.com:53 {\n        errors\n        cache 30\n        proxy . 10.10.10.10\n    }<\/pre>\n<figure class=\"highlight plain\"><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>CoreDNS ConfigMap\u9009\u9879 \u5148\u6765\u770b\u770b\u9ed8\u8ba4\u7684CoreDns\u7684\u914d\u7f6e\u6587\u4ef6  &hellip; <a href=\"https:\/\/blog.espnlol.com\/?p=450\">\u7ee7\u7eed\u9605\u8bfb <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-450","post","type-post","status-publish","format-standard","hentry","category-k8s"],"_links":{"self":[{"href":"https:\/\/blog.espnlol.com\/index.php?rest_route=\/wp\/v2\/posts\/450","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.espnlol.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.espnlol.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.espnlol.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.espnlol.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=450"}],"version-history":[{"count":3,"href":"https:\/\/blog.espnlol.com\/index.php?rest_route=\/wp\/v2\/posts\/450\/revisions"}],"predecessor-version":[{"id":453,"href":"https:\/\/blog.espnlol.com\/index.php?rest_route=\/wp\/v2\/posts\/450\/revisions\/453"}],"wp:attachment":[{"href":"https:\/\/blog.espnlol.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=450"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.espnlol.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=450"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.espnlol.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=450"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}