sudo yum install logstash 錯誤：為 repo 'appstream' 下載元數據失敗 :

按照此地址使用yum命令安裝logstash，https://www.elastic.co/guide/en/logstash/8.1/installing-logstash.html#_yum

sudo yum install logstash
出現錯誤：

CentOS Linux 8 - AppStream                                                                                                                              88  B/s |  38  B     00:00
錯誤：為 repo 'appstream' 下載元數據失敗 : Cannot prepare internal mirrorlist: No URLs in mirrorlist
[root@localhost ~]# sudo yum install logstash
CentOS Linux 8 - AppStream                                                                                                                              91  B/s |  38  B     00:00
錯誤：為 repo 'appstream' 下載元數據失敗 : Cannot prepare internal mirrorlist: No URLs in mirrorlist

解決辦法參照：

https://www.cnblogs.com/bpzblog/p/13918199.html

https://blog.csdn.net/lisongyue123/article/details/110822915