modified backup and restore script to capture the /certs directory. Also added a section tot eh readme

README.md

@@ -125,3 +125,14 @@ wget https://raw.githubusercontent.com/wh1te909/tacticalrmm/develop/restore.sh
 chmod +x restore.sh
 ./restore.sh rmm-backup-xxxxxxx.tar
 ```
+
+## Using another ssl certificate
+During the install you can opt out of using the Let's Encrypt certificate. If you do this the script will create a self-signed certificate, so that https continues to work. You can replace the certificates in /certs/example.com/(privkey.pem | pubkey.pem) with your own. 
+
+If you are migrating from Let's Encrypt to another certificate provider, you can create the /certs directory and copy your certificates there. It is recommended to do this because this directory will be backed up with the backup script provided. Then modify the nginx configurations to use your new certificates
+
+The cert that is generated in a wildcard certificate and is used in the nginx configurations: rmm.conf, api.conf, and mesh.conf. If you can't generate wildcard certificates you can create a cert for each subdomain and configure each nginx configuration file to use it's own certificate. Then restart nginx:
+
+```
+sudo systemctl restart nginx
+```

backup.sh

@@ -39,6 +39,7 @@ sudo tar -czvf ${tmp_dir}/salt/etc-salt.tar.gz -C /etc/salt .
 tar -czvf ${tmp_dir}/salt/srv-salt.tar.gz -C /srv/salt .
 
 sudo tar -czvf ${tmp_dir}/certs/etc-letsencrypt.tar.gz -C /etc/letsencrypt .
+sudo tar -czvf ${tmp_dir}/certs/certs.tar.gz -C /certs .
 
 sudo tar -czvf ${tmp_dir}/nginx/etc-nginx.tar.gz -C /etc/nginx .
 

install.sh

@@ -133,6 +133,8 @@ sudo apt install -y software-properties-common
 sudo apt update
 sudo apt install -y certbot openssl
 
+sudo mkdir /certs
+
 until [[ $LETS_ENCRYPT =~ (y|n) ]]; do
     echo -ne "${YELLOW}Do you want to generate a Let's Encrypt certificate?[y,n]${NC}: "
     read LETS_ENCRYPT
@@ -160,7 +162,6 @@ if [[ $LETS_ENCRYPT == "y" ]]; then
 else
     echo -ne "\n${GREEN}We will generate a self-signed certificate for you.${NC}\n"
     echo "\n${GREEN}You can replace this certificate later by generating the certificates and editting the nginx configuration\n"
-    sudo mkdir /certs
     sudo mkdir /certs/${rootdomain}
     sudo openssl req -newkey rsa:4096 -x509 -sha256 -days 365 -nodes -out /certs/${rootdomain}/pubkey.pem -keyout /certs/${rootdomain}/privkey.pem -subj "/C=US/ST=Some-State/L=city/O=Internet Widgits Pty Ltd/CN=*.${rootdomain}"
 

restore.sh

@@ -122,6 +122,8 @@ sudo apt install -y certbot
 sudo rm -rf /etc/letsencrypt
 sudo mkdir /etc/letsencrypt
 sudo tar -xzf $tmp_dir/certs/etc-letsencrypt.tar.gz -C /etc/letsencrypt
+sudo mkdir /certs
+sudo tar -xzf $tmp_dir/certs/certs.tar.gz -C /certs
 
 print_green 'Restoring celery configs'