安装filebeat报错：
curl: (35) SSL connect error
error: https://packages.elastic.co/GPG-KEY-elasticsearch: import read failed(2).
解决方案：
wget https://packages.elastic.co/GPG-KEY-elasticsearch --no-check-certificate
rpm --import GPG-KEY-elasticsearch
error: https://packages.elastic.co/GPG-KEY-elasticsearch: import read failed(2).
原文：https://www.cnblogs.com/royfans/p/10204913.html