Certificate issuance process on aliyun OS (certbot)

1. For Alibaba cloud os Add source

2. yum install epel-release

3. upgrade ：

yum update

4. install certbot

yum install certbot

5. preparation ：

• to update pip

pip2.7 install --upgrade pip

• Update other components

pip2.7 install requests urllib3  --upgrade

• install requests 2.6

pip  install --upgrade --force-reinstall 'requests==2.6.0'

6. Test installation results ：

certbot --version

7. grant a certificate

certbot -d aaa.pub -d *.aaa.pub --manual --preferred-challenges dns-01 --server https://acme-v02.api.letsencrypt.org/directory certonly --agree-tos

7. Update the domain name later ：

certbot-auto renew