Created directories:

sudo mkdir -p /opt/traefik/certs

copy file .crt dan .key ke directory /opt/traefik/certs

sudo chmod 755 /opt/traefik
sudo chmod 750 /opt/traefik/certs

chmod 644 /opt/traefik/certs/publik.crt
chmod 600 /opt/traefik/certs/private.key 

membuat file *.toml

persistant env variable in centos

add env variable on file /etc/environment

EMAIL=jatnikonm@anri.go.id

source /etc/environment