{"id":6411,"date":"2019-08-29T06:32:41","date_gmt":"2019-08-29T06:32:41","guid":{"rendered":"https:\/\/www.devopsschool.com\/blog\/?p=6411"},"modified":"2021-11-16T10:55:48","modified_gmt":"2021-11-16T10:55:48","slug":"kubernetes-error-coredns-no-route-to-host-log-failed-to-list-crashloopbackoff","status":"publish","type":"post","link":"https:\/\/www.devopsschool.com\/blog\/kubernetes-error-coredns-no-route-to-host-log-failed-to-list-crashloopbackoff\/","title":{"rendered":"Kubernetes Error: coredns &#8211; no route to host log &#038; Failed to list &#038; CrashLoopBackOff"},"content":{"rendered":"\n<p><strong>Errors<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">\n&#91;verizon@raj-laptop ~]$ kubectl <span class=\"hljs-keyword\">get<\/span> pods -A\nNAMESPACE     NAME                                 READY   STATUS             RESTARTS   AGE\nkube-system   coredns-fb8b8dccf-scdx4              0\/1     Error              3          4m44s\nkube-system   coredns-fb8b8dccf-sfwgd              0\/1     CrashLoopBackOff   3          4m44s\nkube-system   etcd-raj-laptop                      1\/1     Running            0          3m49s\nkube-system   kube-apiserver-raj-laptop            1\/1     Running            0          3m36s\nkube-system   kube-controller-manager-raj-laptop   1\/1     Running            0          3m37s\nkube-system   kube-proxy-vkdfh                     1\/1     Running            0          4m44s\nkube-system   kube-scheduler-raj-laptop            1\/1     Running            0          3m30s\nkube-system   weave-net-ftxrg                      2\/2     Running            0          82s\n\n&#91;verizon@raj-laptop ~]$ kubectl logs coredns-fb8b8dccf-sfwgd -n=kube-system\nE0613 16:18:10.815705       1 reflector.go:134] github.com\/coredns\/coredns\/plugin\/kubernetes\/controller.go:315: Failed to list *v1.Service: Get https:\/\/10.96.0.1:443\/api\/v1\/services?limit=500&amp;resourceVersion=0: dial tcp 10.96.0.1:443: connect: no route to host\nE0613 16:18:10.815705       1 reflector.go:134] github.com\/coredns\/coredns\/plugin\/kubernetes\/controller.go:315: Failed to list *v1.Service: Get https:\/\/10.96.0.1:443\/api\/v1\/services?limit=500&amp;resourceVersion=0: dial tcp 10.96.0.1:443: connect: no route to host\nlog: exiting because of error: log: cannot create log: open \/tmp\/coredns.coredns-fb8b8dccf-sfwgd.unknownuser.log.ERROR.20190613-161810.1: no such file or directory<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p><strong>Solutions<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">systemctl disable firewalld\nsystemctl stop firewalld\nsystemctl reboot\nsystemctl stop kubelet\nsystemctl stop docker\n\niptables -P FORWARD ACCEPT\niptables -P INPUT ACCEPT\niptables -P OUTPUT ACCEPT\nip6tables -t nat -F\nip6tables -t mangle -F\nip6tables -F\nip6tables -X\nip6tables -P INPUT ACCEPT\nip6tables -P FORWARD ACCEPT\nip6tables -P OUTPUT ACCEPT\n\n\n$ systemctl stop kubelet\n$ systemctl stop docker\n$ iptables --flush\n$ iptables -tnat --flush\n$ systemctl start kubelet\n$ systemctl start docker<\/code><\/span><\/pre>\n\n<div class=\"epyt-gallery\" data-currpage=\"1\" id=\"epyt_gallery_97690\"><iframe loading=\"lazy\"  id=\"_ytid_93001\"  width=\"760\" height=\"427\"  data-origwidth=\"760\" data-origheight=\"427\" src=\"https:\/\/www.youtube.com\/embed\/?enablejsapi=1&#038;autoplay=0&#038;cc_load_policy=0&#038;cc_lang_pref=&#038;iv_load_policy=1&#038;loop=0&#038;rel=1&#038;fs=1&#038;playsinline=0&#038;autohide=2&#038;theme=dark&#038;color=red&#038;controls=1&#038;disablekb=0&#038;\" class=\"__youtube_prefs__  no-lazyload\" title=\"YouTube player\"  data-epytgalleryid=\"epyt_gallery_97690\"  allow=\"fullscreen; accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen data-no-lazy=\"1\" data-skipgform_ajax_framebjll=\"\"><\/iframe><div class=\"epyt-gallery-list\"><div>Sorry, there was a YouTube error.<\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Errors Solutions<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[4859],"tags":[],"class_list":["post-6411","post","type-post","status-publish","format-standard","hentry","category-kubernetes"],"_links":{"self":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/6411","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/comments?post=6411"}],"version-history":[{"count":2,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/6411\/revisions"}],"predecessor-version":[{"id":25460,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/6411\/revisions\/25460"}],"wp:attachment":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/media?parent=6411"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/categories?post=6411"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/tags?post=6411"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}