Updated on February 10, 2022<\/p>\n\n\n\n
I installed a minimalist CentOS 8 on one of my servers. Installation went successful, however, when I tried to update the system using Output from the But, then verified with the internet connection and DNS and it works just fine as below:<\/p>\n\n\n\n So how did I fix the issue? Here it is.<\/p>\n\n\n\n CentOS Linux 8 had reached the End Of Life (EOL)<\/a> on December 31st, 2021. It means that CentOS 8 will no longer receive development resources from the official CentOS project. After Dec 31st, 2021, if you need to update your CentOS, you need to change the mirrors to vault.centos.org<\/a> where they will be archived permanently. Alternatively, you may want to upgrade to CentOS Stream<\/a>.<\/p>\n\n\n\n Step 1:<\/strong> Go to the Step 2:<\/strong> Run the below commands<\/p>\n\n\n\n Step 3:<\/strong> Now run the yum update<\/p>\n\n\n\n That\u2019s it!<\/p>\n\n\n\n Ref: https:\/\/techglimpse.com\/failed-metadata-repo-appstream-centos-8\/<\/p>\n","protected":false},"excerpt":{"rendered":" Updated on February 10, 2022 I installed a minimalist CentOS 8 on one of my servers. Installation went successful, however, when I tried to update the system using yum update I see this error message: Failed to download metadata for repo. Below is the complete error. [root@autocontroller ~]# yum update CentOS-8 – AppStream 70 B\/s | 38 Read More<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[262,5],"tags":[1171,1170],"class_list":["post-4138","post","type-post","status-publish","format-standard","hentry","category-centos","category-linux","tag-centos-failed-to-download-metadata-for-repo-appstream","tag-failed-to-download-metadata-for-repo-appstream"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=\/wp\/v2\/posts\/4138","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4138"}],"version-history":[{"count":2,"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=\/wp\/v2\/posts\/4138\/revisions"}],"predecessor-version":[{"id":4159,"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=\/wp\/v2\/posts\/4138\/revisions\/4159"}],"wp:attachment":[{"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4138"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4138"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}yum update<\/code> I see this error message: Failed to download metadata for repo. Below is the complete error.<\/p>\n\n\n\n[root@autocontroller ~]# yum update\nCentOS-8 - AppStream 70 B\/s | 38 B 00:00\nError: Failed to download metadata for repo 'AppStream': Cannot prepare internal mirrorlist: No URLs in mirrorlist<\/pre>\n\n\n\n
\/var\/log\/dnf.log<\/code> for more DEBUG information:<\/p>\n\n\n\n2022-02-02T11:39:36Z DEBUG error: Curl error (6): Couldn't resolve host name for http:\/\/mirrorlist.centos.org\/?release=8&arch=x86_64&repo=AppStream&infra=stock [Could not resolve host: mirrorlist.centos.org] (http:\/\/mirrorlist.centos.org\/?release=8&arch=x86_64&repo=AppStream&infra=stock).\n2022-02-02T11:39:36Z WARNING Errors during downloading metadata for repository 'AppStream':\n- Curl error (6): Couldn't resolve host name for http:\/\/mirrorlist.centos.org\/?release=8&arch=x86_64&repo=AppStream&infra=stock [Could not resolve host: mirrorlist.centos.org]\n2022-02-02T11:39:36Z DDEBUG Cleaning up.\n2022-02-02T11:39:36Z SUBDEBUG\nTraceback (most recent call last):\nFile \"\/usr\/lib\/python3.6\/site-packages\/dnf\/repo.py\", line 573, in load\nret = self._repo.load()\nFile \"\/usr\/lib64\/python3.6\/site-packages\/libdnf\/repo.py\", line 394, in load\nreturn _repo.Repo_load(self)\nRuntimeError: Failed to download metadata for repo 'AppStream': Cannot prepare internal mirrorlist: Curl error (6): Couldn't resolve host name for http:\/\/mirrorlist.centos.org\/?release=8&arch=x86_64&repo=AppStream&infra=stock [Could not resolve host: mirrorlist.centos.org]<\/pre>\n\n\n\n
[root@autocontroller ~]# ping google.com\nPING google.com (172.217.166.206) 56(84) bytes of data.\n64 bytes from del03s13-in-f14.1e100.net (172.217.166.206): icmp_seq=1 ttl=115 ti me=43.5 ms\n--- google.com ping statistics ---\n1 packets transmitted, 1 received, 0% packet loss, time 0ms\nrtt min\/avg\/max\/mdev = 43.508\/43.508\/43.508\/0.000 ms<\/pre>\n\n\n\n
Fix Failed to download metadata for repo<\/h2>\n\n\n\n
\/etc\/yum.repos.d\/<\/code> directory.<\/p>\n\n\n\n[root@autocontroller ~]# cd \/etc\/yum.repos.d\/<\/pre>\n\n\n\n
[root@autocontroller ~]# sed -i 's\/mirrorlist\/#mirrorlist\/g' \/etc\/yum.repos.d\/CentOS-*<\/pre>\n\n\n\n
[root@autocontroller ~]# sed -i 's|#baseurl=http:\/\/mirror.centos.org|baseurl=http:\/\/vault.centos.org|g' \/etc\/yum.repos.d\/CentOS-*<\/pre>\n\n\n\n
[root@autocontroller ~]# yum update -y<\/pre>\n\n\n\n