OpenWRT Let's Encrypt

etc_config_acme

root@router:~# opkg list-installed | grep acme
acme-acmesh - 3.0.7-1
acme-acmesh-dnsapi - 3.0.7-1
acme-common - 1.0.3

# vim /etc/config/acme
config acme
	option state_dir '/etc/acme'
	option account_email 'xxxx@mail.com'
	option debug '1'

config cert 'example'
	option keylength '2048'
	option update_uhttpd '1'
	option webroot '/www'
	option dns 'dns_he'
	list credentials 'HE_Username="xxxxx"'
	list credentials 'HE_Password="xxxxx"'
	option use_staging '1'
	option enabled '0'
	list domains 'apu.lan.wrtpoona.in'

# /etc/init.d/acme start
# https://forum.openwrt.org/t/letsencrypt-acme-certs-via-dns-api-wont-renew-work-with-uhttpd/44360

etc_config_uhttpd

# vim /etc/config/uhttpd
config uhttpd 'main'	
	option cert '/etc/acme/apu.lan.wrtpoona.in/apu.lan.wrtpoona.in.cer'
	option key '/etc/acme/apu.lan.wrtpoona.in/apu.lan.wrtpoona.in.key'