大概率是服务器的根证书异常导致的,可以尝试下面的方法
#centos
mv /etc/pki/tls/certs/ca-bundle.crt /etc/pki/tls/certs/ca-bundle.crt_backup
mkdir -p /etc/pki/tls/certs
wget -O /etc/pki/tls/certs/ca-bundle.crt http://download.bt.cn/tools/ca/cacert.pem
chmod 444 /etc/pki/tls/certs/ca-bundle.crt
#ubuntu/debian
echo "ca_certificate=/etc/ssl/certs/ca-certificates.crt" >> /etc/wgetrc
如果不行
mv /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt.bak
wget -O /etc/ssl/certs/ca-certificates.crt http://download.bt.cn/tools/ca/cacert.pem
chmod 644 /etc/ssl/certs/ca-certificates.crt |