{"id":35889,"date":"2023-03-30T14:45:12","date_gmt":"2022-12-13T18:46:01","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90%e6%b5%8b%e8%af%95%e5%a4%87%e5%bf%98%e5%bd%95%e3%80%91%e8%ae%a4%e8%af%81-kubernetes-%e5%ae%89%e5%85%a8%e4%b8%93%e5%ae%b6-cks%e8%80%83%e8%af%95\/"},"modified":"2024-04-29T21:08:37","modified_gmt":"2024-04-29T13:08:37","slug":"%e3%80%90%e6%b5%8b%e8%af%95%e5%a4%87%e5%bf%98%e5%bd%95%e3%80%91%e8%ae%a4%e8%af%81-kubernetes-%e5%ae%89%e5%85%a8%e4%b8%93%e5%ae%b6-cks%e8%80%83%e8%af%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90%e6%b5%8b%e8%af%95%e5%a4%87%e5%bf%98%e5%bd%95%e3%80%91%e8%ae%a4%e8%af%81-kubernetes-%e5%ae%89%e5%85%a8%e4%b8%93%e5%ae%b6-cks%e8%80%83%e8%af%95\/","title":{"rendered":"\u3010\u6d4b\u8bd5\u5907\u5fd8\u5f55\u3011\u8ba4\u8bc1 Kubernetes \u5b89\u5168\u4e13\u5bb6 (CKS)\u8003\u8bd5"},"content":{"rendered":"<h1>\u9996\u5148<\/h1>\n<p>\u672c\u6587\u662f\u5173\u4e8e\u5907\u8003Certified Kubernetes Security Specialist (CKS)\u8003\u8bd5\u65f6\u9700\u8981\u8bb0\u4f4f\u7684\u5185\u5bb9\u7684\u5907\u5fd8\u5f55\u3002<\/p>\n<h1>\u57fa\u51c6<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">CIS Benchmark<\/ul>\n<\/li>\n<\/ul>\n<p>CIS-CAT<\/p>\n<p>CIS\u304c\u63d0\u4f9b\u3059\u308bCIS Benchmarks\u3078\u306e\u6e96\u62e0\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u30c4\u30fc\u30eb<br \/>\nkubernetes\u7528\u306eCIS-CAT\u306fPro\u7248(\u6709\u511f)\u306b\u3057\u304b\u306a\u3044\u305f\u3081\u6ce8\u610f<\/p>\n<p>kube-bench<\/p>\n<p>CIS Benchmarks\u306b\u57fa\u3065\u304fOSS\u306e\u30c1\u30a7\u30c3\u30af\u30c4\u30fc\u30eb<\/p>\n<p>kube-bench\u30b3\u30de\u30f3\u30c9\u3067\u5b9f\u884c<\/p>\n<p>kube-bench run &#8211;targets=master<\/p>\n<p>maseter\u30ce\u30fc\u30c9\u306b\u5bfe\u3057\u3066\u5b9f\u884c<\/p>\n<p>kube-bench run &#8211;targets=node<\/p>\n<p>worker\u30ce\u30fc\u30c9\u306b\u5bfe\u3057\u3066\u5b9f\u884c<\/p>\n<h1>Kubelet \u5b89\u5168<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">kubelet\u3068\u901a\u4fe1\u3059\u308b\u30dd\u30fc\u30c8<\/ul>\n<\/li>\n<\/ul>\n<p>10250<\/p>\n<p>\u30d5\u30eb\u30a2\u30af\u30bb\u30b9<br \/>\nkubelet.service\u306e\u8a2d\u5b9a\u5024&#8211;anonymous-auth\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067true\u306e\u305f\u3081false\u63a8\u5968<\/p>\n<p>false\u306e\u5834\u5408\u306fcurl\u9001\u4fe1\u6642\u306b\u30aa\u30d7\u30b7\u30e7\u30f3\u3067client ca file\u3092\u6e21\u305b\u3070\u8a8d\u8a3c\u3055\u308c\u308b<\/p>\n<p>10255<\/p>\n<p>\u8aad\u307f\u53d6\u308a\u5c02\u7528<br \/>\n\u7121\u52b9\u306b\u3059\u308b\u5834\u5408\u306freadOnlyPort\u30920\u306b\u8a2d\u5b9a<\/p>\n<h1>\u7528 kubectl proxy \u548c kubectl port-forward\u3002<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">kubectl proxy<\/ul>\n<\/li>\n<\/ul>\n<p>API server\u3078\u306e\u901a\u4fe1\u3092\u30d7\u30ed\u30ad\u30b7<\/p>\n<p>kubectl port-forward<\/p>\n<p>\u5c55\u958b\u3055\u308c\u305fpod\u3068\u901a\u4fe1\u3059\u308b\u305f\u3081\u306e\u30dd\u30fc\u30c8\u30d5\u30a9\u30ef\u30fc\u30c7\u30a3\u30f3\u30b0<\/p>\n<h1>Linux \u5f3a\u5316\u4fdd\u62a4<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u7279\u5b9a\u306e\u30e6\u30fc\u30b6\u3092\u30ed\u30b0\u30a4\u30f3\u4e0d\u53ef(ssh\u3084su\u4e0d\u53ef)\u306b\u3057\u305f\u3044<\/ul>\n<\/li>\n<\/ul>\n<p>usermod -i \/sbin\/nologin<\/p>\n<p>ssh\u30ed\u30b0\u30a4\u30f3\u6642\u306e\u6319\u52d5\u5236\u5fa1<\/p>\n<p>\/etc\/sshd\/sshd_config\u3092\u7de8\u96c6<\/p>\n<p>sudo\u5b9f\u884c\u53ef\u80fd\u30e6\u30fc\u30b6\u306e\u5236\u5fa1<\/p>\n<p>\/etc\/sudoers\u3092\u7de8\u96c6<\/p>\n<p>\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u79c1\u7528\u3057\u3066\u3044\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u77e5\u308a\u305f\u3044<\/p>\n<p>netstat -plnt\u306bgrep\u3067\u78ba\u8a8d<\/p>\n<p>-p\u306fPID\/Program\u3092\u8868\u793a<\/p>\n<p>-l\u306f\u30ea\u30b9\u30cb\u30f3\u30b0\u72b6\u614b\u306e\u30bd\u30b1\u30c3\u30c8\u306e\u307f\u8868\u793a<\/p>\n<p>-n\u306f\u30db\u30b9\u30c8\u540d\u3084\u30b5\u30fc\u30d3\u30b9\u540d\u3092\u89e3\u6c7a\u305b\u305a\u306b\u3001IP\u30a2\u30c9\u30ec\u30b9\u3084\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u8868\u793a<\/p>\n<p>-t\u306fTCP\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u307f\u8868\u793a<\/p>\n<h1>Seccomp\u662f\u4e00\u79cd\u64cd\u4f5c\u7cfb\u7edf\u7684\u5b89\u5168\u673a\u5236\u3002<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30d7\u30ed\u30bb\u30b9\u306e\u30b7\u30b9\u30c6\u30e0\u30b3\u30fc\u30eb\u3092\u5236\u9650\u3057\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084\u30d7\u30ed\u30bb\u30b9\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5411\u4e0a\u3055\u305b\u308b<\/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\">\u30c7\u30d5\u30a9\u30eb\u30c8\u306eseccomp\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u5834\u6240<\/ul>\n<\/li>\n<\/ul>\n<p>\/var\/lib\/kubelet\/seccomp<\/p>\n<p>\u7279\u5b9a\u306eseccomp\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u6307\u5b9a\u3057\u3066Pod\u3092\u4f5c\u6210\u3059\u308b<\/p>\n<p>spec.securityContext.seccompProfile.localhostProfile\u306b\u30d1\u30b9\u3092\u8a2d\u5b9a<br \/>\n\u8a18\u8f09\u3059\u308b\u30d1\u30b9\u306fkubelet\u306e\u8d77\u52d5\u5f15\u6570\u3067\u6307\u5b9a\u3055\u308c\u305fseccomp\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u5834\u6240\u4ee5\u4e0b\u304b\u3089\u3067\u826f\u3044(\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\/var\/lib\/kubelet\/seccomp\/)<\/p>\n<h1>AppArmor \u5e94\u7528\u9632\u62a4\u7cfb\u7edf<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u7279\u5b9a\u306e\u30d7\u30ed\u30bb\u30b9\u304c\u5b9f\u884c\u3067\u304d\u308b\u64cd\u4f5c\u3084\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u30d5\u30a1\u30a4\u30eb\u306a\u3069\u306e\u30b7\u30b9\u30c6\u30e0\u30ea\u30bd\u30fc\u30b9\u306b\u5bfe\u3059\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30a2\u30af\u30bb\u30b9\u5236\u5fa1\u3092\u5b9f\u65bd\u3059\u308b<\/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\">\u95a2\u9023\u30b3\u30de\u30f3\u30c9<\/ul>\n<\/li>\n<\/ul>\n<p>aa-status<\/p>\n<p>apparmor-parser<\/p>\n<p>-a (&#8211;add)<br \/>\n-p (&#8211;preprocess)<\/p>\n<p>pod\u306b\u8a2d\u5b9a\u3057\u305f\u3044\u5834\u5408<\/p>\n<p>annotaions\u306bcontainer.apparmor.security.beta.kubernetes.io\/: \u3092\u8ffd\u52a0<\/p>\n<p>\u306f\u4ee5\u4e0b\u306e3\u7a2e\u985e<\/p>\n<p>runtime\/default: \u30e9\u30f3\u30bf\u30a4\u30e0\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u9069\u7528\u3059\u308b<\/p>\n<p>localhost\/: (profile_name)\u3068\u3044\u3046\u540d\u524d\u3067\u30db\u30b9\u30c8\u306b\u30ed\u30fc\u30c9\u3055\u308c\u305f\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u9069\u7528\u3059\u308b<\/p>\n<p>unconfied: \u3044\u304b\u306a\u308b\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3082\u30ed\u30fc\u30c9\u3055\u308c\u306a\u3044\u3053\u3068\u3092\u793a\u3059<\/p>\n<h1>OPA\u95e8\u536b<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Kubernetes\u30ea\u30bd\u30fc\u30b9\uff08\u30dd\u30c3\u30c9\u3001\u30b5\u30fc\u30d3\u30b9\u3001\u30cd\u30fc\u30e0\u30b9\u30da\u30fc\u30b9\u306a\u3069\uff09\u306b\u9069\u7528\u3055\u308c\u308b\u30dd\u30ea\u30b7\u30fc\u3092\u5b9a\u7fa9\u3057\u3001\u305d\u308c\u3089\u306e\u30dd\u30ea\u30b7\u30fc\u3092\u5b9f\u884c\u3057\u3066\u30ea\u30bd\u30fc\u30b9\u306e\u4f5c\u6210\u3084\u5909\u66f4\u3092\u5236\u5fa1\u3059\u308b<\/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\">Validating Admission Controller\u3068\u3057\u3066\u52d5\u4f5c\u3057\u3001Kubernetes API\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u9001\u4fe1\u3055\u308c\u308b\u524d\u306b\u30dd\u30ea\u30b7\u30fc\u306e\u9069\u7528\u3092\u78ba\u8a8d\u3059\u308b<\/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\">ValidatingWebhookConfigration\u30ea\u30bd\u30fc\u30b9\u5185\u3067OPA\u30b5\u30fc\u30d0\u306e\u60c5\u5831\u3092\u8a18\u8f09<\/ul>\n<\/li>\n<\/ul>\n<p>.rego\u30d5\u30a1\u30a4\u30eb\u304b\u3089configmap\u3092\u4f5c\u6210\u3059\u308b\u5834\u5408\u306f&#8211;from-file=\u3067\u6307\u5b9a<\/p>\n<p>ConstraintTemplate\u30ea\u30bd\u30fc\u30b9\u5185\u306bconstraint\u3092\u5f37\u5236\u3059\u308bRego\u30ed\u30b8\u30c3\u30af\u3068\u30b3\u30f3\u30b9\u30c8\u30ec\u30a4\u30f3\u30c8\u306e\u30b9\u30ad\u30fc\u30de\u306e\u4e21\u65b9\u304c\u8a18\u8ff0\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u307e\u305a\u3053\u3053\u3092\u78ba\u8a8d<\/p>\n<p>kubectl get crd\u3067\u5404\u30ea\u30bd\u30fc\u30b9\u540d\u3092\u78ba\u8a8d<\/p>\n<h1>\u5bb9\u5668\u8fd0\u884c\u65f6<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">runc<\/ul>\n<\/li>\n<\/ul>\n<p>kubernetes\u30c7\u30d5\u30a9\u30eb\u30c8\u306econtainer runtime<\/p>\n<p>gVisor<\/p>\n<p>\u30db\u30b9\u30c8\u306e\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3068\u30b3\u30f3\u30c6\u30ca\u5316\u3055\u308c\u305f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u9593\u306b\u4e2d\u9593\u5c64\u3068\u3057\u3066\u6a5f\u80fd<br \/>\ndocker\u5b9f\u884c\u6642\u306b\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u6307\u5b9a\u53ef\u80fd<\/p>\n<p>&#8211;runtime runsc<\/p>\n<p>kata container<\/p>\n<p>\u4eee\u60f3\u30de\u30b7\u30f3\u3092\u4f5c\u6210\u3057\u3001\u305d\u306e\u4e2d\u3067\u30b3\u30f3\u30c6\u30ca\u3092\u5b9f\u884c<br \/>\ndocker\u5b9f\u884c\u6642\u306b\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u6307\u5b9a\u53ef\u80fd<\/p>\n<p>&#8211;runtime kata<\/p>\n<h1>\u8fd0\u884c\u65f6\u7c7b<\/h1>\n<p>RuntimeClass\u30ea\u30bd\u30fc\u30b9\u3092\u4f5c\u6210\u5f8c\u3001Pod\u306espec.runtimeClassName\u306b\u30ea\u30bd\u30fc\u30b9\u540d\u3092\u8a18\u8f09<\/p>\n<h1>Pod\u4e4b\u95f4\u7684mTLS\u901a\u4fe1<\/h1>\n<ul class=\"post-ul\">\u4e00\u822c\u7684\u306bIstio\u304c\u4f7f\u7528<\/ul>\n<h1>\u51c6\u5165\u63a7\u5236\u5668<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">admission controller\u306e\u6709\u52b9\u5316<\/ul>\n<\/li>\n<\/ul>\n<p>kube-apiserver\u306e\u8d77\u52d5\u30aa\u30d7\u30b7\u30e7\u30f3\u306b&#8211;enable-admission-plugins\u3092\u8ffd\u8a18\u3057\u3066\u6307\u5b9a<\/p>\n<p>admission controller\u7528\u306econfig\u30d5\u30a1\u30a4\u30eb\u3092\u660e\u793a\u7684\u306b\u6307\u5b9a<\/p>\n<p>kube-apiserver\u306e\u8d77\u52d5\u30aa\u30d7\u30b7\u30e7\u30f3\u306b&#8211;admission-control-config-file\u3092\u8ffd\u8a18\u3057\u3066\u6307\u5b9a<\/p>\n<h1>Kubesec\u7684\u4e2d\u6587\u89e3\u91ca\u662f\u4ec0\u4e48\uff1f<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">pod\u306e\u30b9\u30ad\u30e3\u30cb\u30f3\u30b0\u3092\u63d0\u4f9b<\/ul>\n<\/li>\n<\/ul>\n<p>kubesec\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u7528\u3001\u8a73\u7d30\u306a\u4f7f\u3044\u65b9\u306f-h\u3067\u78ba\u8a8d<\/p>\n<h1>Trivy: \u67e5\u6f0f\u8865\u7f3a<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30b3\u30f3\u30c6\u30ca\u30a4\u30e1\u30fc\u30b8\u306e\u8106\u5f31\u6027\u30b9\u30ad\u30e3\u30f3\u3092\u63d0\u4f9b<\/ul>\n<\/li>\n<\/ul>\n<p>trivy\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u7528\u3001\u8a73\u7d30\u306a\u4f7f\u3044\u65b9\u306f-h\u3067\u78ba\u8a8d<\/p>\n<h1>\u7ffb\u8bd1\uff1a\u730e\u96bc<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Kubernetes\u30af\u30e9\u30b9\u30bf\u5185\u3067\u5b9f\u884c\u3055\u308c\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084\u30b5\u30fc\u30d3\u30b9\u306e\u52d5\u4f5c\u3092\u76e3\u8996\u3057\u3001\u7570\u5e38\u306a\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u9055\u53cd\u3092\u691c\u51fa\u3059\u308b<\/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\">\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb<\/ul>\n<\/li>\n<\/ul>\n<p>\/etc\/falco\/falco.yaml<\/p>\n<p>\u30eb\u30fc\u30eb\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb<\/p>\n<p>\/etc\/falco\/falco_rule.yaml<\/p>\n<p>\/etc\/falco\/falco_rule.local.yaml<\/p>\n<p>\u8a18\u8f09\u3059\u308b\u3053\u3068\u3067\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30eb\u30fc\u30eb\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u53ef\u80fd<\/p>\n<p>falco\u306e\u30db\u30c3\u30c8\u30ea\u30ed\u30fc\u30c9<\/p>\n<p>kill -1 $(cat \/var\/run\/falco.pid)<\/p>\n<p>output\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u5909\u3048\u305f\u3044<\/p>\n<p>output\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u53c2\u8003\u306b\u5909\u66f4\u3059\u308b<\/p>\n<p>\u691c\u51fa\u3055\u308c\u305f\u8105\u5a01\u306fjournalctl -u falco\u3067\u78ba\u8a8d\u3059\u308b<\/p>\n<h1>\u5ba1\u8ba1<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">kube-apiserver\u306b\u30d5\u30e9\u30b0\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u3067\u6709\u52b9\u5316<\/ul>\n<\/li>\n<\/ul>\n<p>&#8211;audit-policy-file<\/p>\n<p>policy\u30ea\u30bd\u30fc\u30b9\u5b9a\u7fa9\u30d5\u30a1\u30a4\u30eb\u3092\u6307\u5b9a<\/p>\n<p>&#8211;audit-log-path<\/p>\n<p>audit\u30ed\u30b0\u3092\u66f8\u304d\u8fbc\u3080\u30d5\u30a1\u30a4\u30eb\u3092\u6307\u5b9a<\/p>\n<p>&#8211;audit-log-maxage<\/p>\n<p>\u76e3\u67fb\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u3092\u4fdd\u6301\u3059\u308b\u6700\u5927\u65e5\u6570\u3092\u6307\u5b9a<\/p>\n<p>&#8211;audit-log-maxsize<\/p>\n<p>\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u304c\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3055\u308c\u308b\u307e\u3067\u306e\u6700\u5927\u30b5\u30a4\u30ba\u3092\u30e1\u30ac\u30d0\u30a4\u30c8\u5358\u4f4d\u3067\u6307\u5b9a<\/p>\n<p>&#8211;audit-log-maxbackup<\/p>\n<p>\u4fdd\u6301\u3059\u308b\u76e3\u67fb\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u306e\u6700\u5927\u6570\u3092\u6307\u5b9a<\/p>\n<p>policy\u30ea\u30bd\u30fc\u30b9\u306e\u66f8\u304d\u65b9\u306b\u95a2\u3059\u308b\u6ce8\u610f\u70b9<\/p>\n<p>\u57fa\u672c\u7684\u306a\u66f8\u304d\u65b9\u306f\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u53c2\u7167<br \/>\ngroup\u306e\u8a18\u8f09\u304c\u5fc5\u8981\u306a\u30ea\u30bd\u30fc\u30b9\u3092\u5bfe\u8c61\u306b\u3059\u308b\u5834\u5408\u306fkubectl api-resources\u3067\u78ba\u8a8d\u3059\u308b\u3053\u3068<\/p>\n<h1>\u79d8\u5bc6<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">ServiceAccountToken\u306e\u81ea\u52d5\u30de\u30a6\u30f3\u30c8\u3092\u6b62\u3081\u305f\u3044(\u4e0b\u8a182\u3064\u306e\u3046\u3061\u3044\u305a\u308c\u304b\u306e\u65b9\u6cd5\u3067\u5b9f\u65bd)<\/ul>\n<\/li>\n<\/ul>\n<p>pod\u306e\u30de\u30cb\u30d5\u30a7\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb\u5185\u3067spec.automountServiceAccountToken\u3092false\u306b\u8a2d\u5b9a<br \/>\nserviceaccount\u306e\u30de\u30cb\u30d5\u30a7\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb\u5185\u3067automountServiceAccountToken\u3092false\u306b\u8a2d\u5b9a<\/p>\n<h1>\u7f51\u7edc\u7b56\u7565<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30ea\u30bd\u30fc\u30b9\u306blabel\u304c\u8907\u6570\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u305d\u306e\u5206\u3082\u8a2d\u5b9a\u3059\u308b\u3053\u3068<\/ul>\n<\/li>\n<\/ul>\n<p>kubernetes\u5074\u306e\u51e6\u7406\u306b\u3088\u3063\u3066\u81ea\u52d5\u7684\u306b\u4ed8\u4e0e\u3055\u308c\u308blabel\u306f\u8a2d\u5b9a\u3057\u306a\u304f\u3066\u3082\u826f\u3044<\/p>\n<p>from\u914d\u4e0b\u306e\u6761\u4ef6\u306fAND\u6761\u4ef6\u306b\u306a\u308b<br \/>\nfrom\u9593\u306e\u6761\u4ef6\u306fOR\u6761\u4ef6\u306b\u306a\u308b<br \/>\nDNS\u306e\u307f\u901a\u4fe1\u8a31\u53ef\u3057\u305f\u3044\u5834\u5408\u306e\u30b5\u30f3\u30d7\u30ebyaml<\/p>\n<p>ports\u306bTCP\/UDP\u306e53\u306e\u307f\u8a31\u53ef\u306e\u8a2d\u5b9a\u3092\u8a18\u8f09\u3059\u308b<\/p>\n<details>\u30b5\u30f3\u30d7\u30ebyaml<br \/>\napiVersion: networking.k8s.io\/v1<br \/>\nkind: NetworkPolicy<br \/>\nmetadata:<br \/>\nname: deny<br \/>\nnamespace: default<br \/>\nspec:<br \/>\npodSelector: {}<br \/>\npolicyTypes:<br \/>\n&#8211; Egress<br \/>\n&#8211; Ingress<br \/>\negress:<br \/>\n&#8211; ports:<br \/>\n&#8211; port: 53<br \/>\nprotocol: TCP<br \/>\n&#8211; port: 53<br \/>\nprotocol: UDP<\/details>\n<h1>apiserver<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30aa\u30d7\u30b7\u30e7\u30f3<\/ul>\n<\/li>\n<\/ul>\n<p>&#8211;kubernetes-service-node-port<\/p>\n<p>apiserver\u306e\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u6642\u306b\u4f5c\u6210\u3055\u308c\u308bservice\u306e\u30bf\u30a4\u30d7\u304cnodePort\u306b\u306a\u308a\u3001\u6307\u5b9a\u3057\u305fport\u756a\u53f7\u3092\u4f7f\u7528\u3059\u308b<br \/>\n\u3053\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u4f5c\u6210\u3055\u308c\u308bservice\u306e\u30bf\u30a4\u30d7\u306fclusterIP\u306b\u306a\u308b<br \/>\n\u3053\u306e\u9805\u76ee\u3092\u5909\u66f4\u3057\u305f\u969b\u306f\u3001\u65e2\u5b58\u306eservcie\u3092\u524a\u9664\u3057\u306a\u3044\u3068\u65b0\u305f\u306a\u30bf\u30a4\u30d7\u306eservice\u304c\u4f5c\u6210\u3055\u308c\u306a\u3044\u305f\u3081\u6ce8\u610f<\/p>\n<p>kube-apiserver\u304c\u7acb\u3061\u4e0a\u304c\u3063\u3066\u3053\u306a\u3044\u6642\u306b\u30ed\u30b0\u3092\u898b\u3066\u8abf\u67fb\u3057\u305f\u3044<\/p>\n<p>\/var\/log\/pods or \/var\/log\/containers<\/p>\n<p>kube-apiserver\u306e\u8d77\u52d5\u306b\u5931\u6557\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u95a2\u9023\u30ed\u30b0(\u8aad\u307f\u8fbc\u3081\u306a\u3044\u30d5\u30e9\u30b0\u7b49)\u304c\u7f6e\u304b\u308c\u3066\u3044\u308b<\/p>\n<p>journalctl -u kubelet<br \/>\ncrictl logs &lt;kube-apiserver\u306eCONTAINER_ID&gt;<br \/>\njournalctl | grep kube-apiserver<br \/>\ncat \/var\/log\/syslog | grep kube-apiserver<\/p>\n<p>kubelet\u306econfig\u30d5\u30a1\u30a4\u30eb(\/etc\/kubernetes\/kubelet.conf\u7b49)\u3092KUBECONFIG\u74b0\u5883\u5909\u6570\u306b\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067apiserver\u3068\u901a\u4fe1\u53ef\u80fd<\/p>\n<p>NodeRestriction\u3092\u6709\u52b9\u5316\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u5236\u9650\u3067\u304d\u308b<\/p>\n<p>TLS\u63a5\u7d9a\u306b\u304a\u3051\u308b\u6700\u5c0f\u30d0\u30fc\u30b8\u30e7\u30f3\u3068\u6697\u53f7\u30b9\u30a4\u30fc\u30c8\u306e\u8a2d\u5b9a<\/p>\n<p>&#8211;tls-min-version=VersionTLS12<\/p>\n<p>&#8211;tls-cipher-suites=TLS_AES_128_GCM_SHA256<\/p>\n<p>\u5024\u306f\u554f\u984c\u3067\u6307\u5b9a\u3055\u308c\u308b\u3082\u306e\u3067\u3088\u3044<\/p>\n<h1>ETCD\u7684\u542b\u4e49<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">ETCD\u306f\u30c7\u30fc\u30bf\u3092\/registry\/{type}\/{namespace}\/{name}\u914d\u4e0b\u306b\u66f8\u304d\u8fbc\u3080<\/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\">etcdctl\u3067\u53c2\u7167\u3059\u308b\u969b\u306fetcdctl (cert\u95a2\u9023\u30aa\u30d7\u30b7\u30e7\u30f3) get\u3092\u4f7f\u7528\u3059\u308b<\/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\">\u6697\u53f7\u30b9\u30a4\u30fc\u30c8\u306e\u6307\u5b9a<\/ul>\n<\/li>\n<\/ul>\n<p>&#8211;cipher-suites=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256<br \/>\n\u5024\u306f\u554f\u984c\u3067\u6307\u5b9a\u3055\u308c\u308b\u3082\u306e\u3067\u3088\u3044<br \/>\napi-server\u306e\u8a2d\u5b9a\u5909\u66f4\u3057\u8d77\u52d5\u3057\u3066\u304f\u308b\u3053\u3068\u3092\u78ba\u8a8d \u2192 ETCD\u306e\u8a2d\u5b9a\u5909\u66f4\u3068\u3044\u3046\u9806\u756a\u3067\u3084\u3089\u306a\u3044\u3068ETCD\u304c\u4e0a\u304c\u3063\u3066\u3053\u306a\u304b\u3063\u305f(\u305f\u307e\u305f\u307e\uff1f)<\/p>\n<h1>Pod\u5b89\u5168\u6807\u51c6<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">namespace\u5358\u4f4d\u3067pod\u306b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5236\u5fa1\u3092\u304b\u3051\u308b<\/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\">namespace\u30ea\u30bd\u30fc\u30b9\u5185\u306emetadata.annotations\u306b\u8a2d\u5b9a\u3059\u308b<\/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\">\u57fa\u672c\u306f3\u3064\u306eprofile\u304b\u3089\u9078\u629e<\/ul>\n<\/li>\n<\/ul>\n<p>Privileged<\/p>\n<p>\u7279\u6a29\u3092\u8a31\u53ef(\u307b\u307c\u5236\u9650\u306a\u3057)<\/p>\n<p>Baseline<\/p>\n<p>\u65e2\u77e5\u306e\u7279\u6a29\u6607\u683c\u3092\u9632\u6b62\u3059\u308b\u6700\u5c0f\u9650\u306e\u5236\u9650\u30dd\u30ea\u30b7\u30fc<\/p>\n<p>Restricted<\/p>\n<p>\u53b3\u3057\u304f\u5236\u9650\u3055\u308c\u305f\u30dd\u30ea\u30b7\u30fc\u3067\u3001\u73fe\u5728\u306epod hardening\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306b\u5f93\u3046<\/p>\n<h1>\u5bb9\u5668\u7684\u4e0d\u53ef\u53d8\u6027<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">bash\/shell\u306e\u524a\u9664<\/ul>\n<\/li>\n<\/ul>\n<p>startupProbe\u3067remove \/bin\/bash<\/p>\n<p>filessytem\u3092readonly\u306b<\/p>\n<p>securitycontext\u3067\u8a2d\u5b9a<\/p>\n<p>root user\u3067\u30b3\u30f3\u30c6\u30ca\u3092\u5b9f\u884c\u3057\u306a\u3044(run as user and non root)<\/p>\n<p>securitycontext\u3067\u8a2d\u5b9a<\/p>\n<h1>Secure and Herden Images<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">image\u306b\u5bfe\u3057\u3066\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/ul>\n<\/li>\n<\/ul>\n<p>\u30d1\u30c3\u30b1\u30fc\u30b8\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u660e\u78ba\u306b\u3059\u308b\u3053\u3068(latest\u306f\u4f7f\u308f\u306a\u3044)<\/p>\n<p>root user\u3067\u5b9f\u884c\u3057\u306a\u3044<br \/>\nfilessytem\u3092readonly\u306b<br \/>\nshell access\u3092\u524a\u9664<\/p>\n<h1>Other<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">curl\u3092\u7528\u3044\u3066kubernetes\u30ea\u30bd\u30fc\u30b9\u3092\u53d6\u5f97\u3057\u305f\u3044<\/ul>\n<\/li>\n<\/ul>\n<p>\u3072\u306a\u5f62\u3092\u899a\u3048\u3066\u304a\u304f(\u2193\u8a8d\u8a3c\u306btoken\u3092\u4f7f\u3046\u5834\u5408)<br \/>\ncurl htts:\/\/kubernetes.default\/api\/v1\/namespaces\/default\/pods -H &#8220;Authorization: Bearer $(token)&#8221; -k<\/p>\n<h1>\u547d\u4ee4<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">kubectl<\/ul>\n<\/li>\n<\/ul>\n<p>config<\/p>\n<p>get-context -o name<\/p>\n<p>context name\u3092\u8868\u793a\u3059\u308b<\/p>\n<p>view &#8211;raw<\/p>\n<p>\u6a5f\u5bc6\u30c7\u30fc\u30bf\u3092\u8868\u793a\u3059\u308b<\/p>\n<p>sha512sum<\/p>\n<p>SHA-512\u30cf\u30c3\u30b7\u30e5\u5024\u3092\u8a08\u7b97\u3057\u3066\u8868\u793a\u3059\u308b<br \/>\nkubernetes\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30d5\u30a1\u30a4\u30eb\u306e\u30d0\u30a4\u30ca\u30ea\u3092\u6bd4\u8f03\u3059\u308b\u969b\u306b\u4f7f\u7528<\/p>\n<p>strace<\/p>\n<p>-p<\/p>\n<p>\u6307\u5b9a\u3057\u305fPID\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u3069\u306e\u30b7\u30b9\u30c6\u30e0\u30b3\u30fc\u30eb\u3092\u5b9f\u884c\u3057\u3001\u305d\u308c\u306b\u4f34\u3046\u5f15\u6570\u3084\u7d50\u679c\u3092\u8868\u793a\u3059\u308b<\/p>\n<p>-c<\/p>\n<p>\u7d71\u8a08\u60c5\u5831\u3068\u3057\u3066\u8868\u793a<\/p>\n<p>systemctl<\/p>\n<p>list-units &#8211;type service<\/p>\n<p>systemctl\u304c\u7ba1\u7406\u3057\u3066\u3044\u308bunit\u306e\u4e00\u89a7\u3092\u8868\u793a<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 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