我正在尝试这样做：https://www.shivering-isles.com/lets-encrypt-renew-all-your-certs-using-systemd/
当我运行计时器时：
sudo systemctl start letsencrypt.timer
我收到错误：
Job for letsencrypt.timerfailed. See "systemctl status letsencrypt.timer" and "journlctl -xe" for details.
sudo journalctl -u letsencrypt.timer：
-- Logs begin at Sat 2017-02-25 05:28:36 UTC, end at Fri 2017-03-03 15:18:23
Mar 03 14:54:17 instanty-dev systemd[1]: letsencrypt.timer: Refusing to start
Mar 03 14:54:17 instanty-dev systemd[1]: Failed to start letsencrypt timer.
letsencrypt.service：
[Unit]
Description=Renews letsencrypt certificates
After=network.target
[Service]
Type=oneshot
WorkingDirectory=/opt/letsencrypt/
ExecStart=/opt/letsencrypt/letsencrypt-auto renew
letsencrypt.timer：
[Unit]
Description=letsencrypt timer
[Timer]
OnCalendar=daily
Persistent=true
Unit=letsencrypt.service
[Install]
WantedBy=basic.target
答案1
通过查看systemd源代码，计时器发出“拒绝启动”的唯一原因是它需要激活的服务单元出现问题。确认.timer和.service文件均有效：
systemd-analyze verify /etc/systemd/system/letsencrypt.service
systemd-analyze verify /etc/systemd/system/letsencrypt.timer
还要确认您可以手动启动 letsencrypt 服务：
systemctl start letsencrypt
journalctl -u letsencrypt