set acme.log path in installer

install/lib/installer_base.lib.php

@@ -2886,8 +2886,13 @@ class installer_base {
 				$check_acme_file = $acme_cert_dir . '/cert.pem';
 			}
 		}
-
 		swriteln('Using certificate path ' . $acme_cert_dir);
+
+		if(!is_dir($conf['ispconfig_log_dir'])) {
+			mkdir($conf['ispconfig_log_dir'], 0755, true);
+		}
+		$acme_log = $conf['ispconfig_log_dir'] . '/acme.log';
+
 		$ip_address_match = false;
 		if(!(($svr_ip4 && in_array($svr_ip4, $dns_ips)) || ($svr_ip6 && in_array($svr_ip6, $dns_ips)))) {
 			swriteln('Server\'s public ip(s) (' . $svr_ip4 . ($svr_ip6 ? ', ' . $svr_ip6 : '') . ') not found in A/AAAA records for ' . $hostname . ': ' . implode(', ', $dns_ips));
@@ -3015,11 +3020,11 @@ class installer_base {
 				$out = null;
 				$ret = null;
 				if($conf['nginx']['installed'] == true || $conf['apache']['installed'] == true) {
-					exec("$acme --issue -w /usr/local/ispconfig/interface/acme -d " . escapeshellarg($hostname) . " $renew_hook", $out, $ret);
+					exec("$acme --issue --log $acme_log -w /usr/local/ispconfig/interface/acme -d " . escapeshellarg($hostname) . " $renew_hook", $out, $ret);
 				}
 				// Else, it is not webserver, so we use standalone
 				else {
-					exec("$acme --issue --standalone -d " . escapeshellarg($hostname) . " $hook", $out, $ret);
+					exec("$acme --issue --log $acme_log --standalone -d " . escapeshellarg($hostname) . " $hook", $out, $ret);
 				}
 
 				if($ret == 0 || ($ret == 2 && file_exists($check_acme_file))) {
@@ -3031,7 +3036,7 @@ class installer_base {
 					//$acme_cert = "--cert-file $acme_cert_dir/cert.pem";
 					$acme_key = "--key-file " . escapeshellarg($ssl_key_file);
 					$acme_chain = "--fullchain-file " . escapeshellarg($ssl_crt_file);
-					exec("$acme --install-cert -d " . escapeshellarg($hostname) . " $acme_key $acme_chain");
+					exec("$acme --install-cert --log $acme_log -d " . escapeshellarg($hostname) . " $acme_key $acme_chain");
 					$issued_successfully = true;
 					umask($old_umask);