diff -ur cacti-0.8.8h/include/config.php cacti-0.8.8h.new/include/config.php
--- cacti-0.8.8h/include/config.php	2016-02-07 22:26:54.000000000 +0300
+++ cacti-0.8.8h.new/include/config.php	2016-05-10 14:13:15.732650670 +0300
@@ -38,6 +38,8 @@
 */
 //$url_path = "/cacti/";
 
+include '/etc/cacti/config.php';
+
 /* Default session name - Session name must contain alpha characters */
 //$cacti_session_name = "Cacti";
 
diff -ur cacti-0.8.8h/include/global.php cacti-0.8.8h.new/include/global.php
--- cacti-0.8.8h/include/global.php	2016-03-07 02:26:59.000000000 +0300
+++ cacti-0.8.8h.new/include/global.php	2016-05-10 14:13:15.732650670 +0300
@@ -116,7 +116,8 @@
 	$config["library_path"] = preg_replace("/(.*[\/])include/", "\\1lib", dirname(__FILE__));
 }
 $config["include_path"] = dirname(__FILE__);
-$config["rra_path"] = $config["base_path"] . '/rra';
+$config["rra_path"] = '/var/lib/cacti/rra';
+$config["log_path"] = '/var/log/cacti';
 
 /* colors */
 $colors["dark_outline"] = "454E53";
diff -ur cacti-0.8.8h/include/global_settings.php cacti-0.8.8h.new/include/global_settings.php
--- cacti-0.8.8h/include/global_settings.php	2016-02-07 22:26:54.000000000 +0300
+++ cacti-0.8.8h.new/include/global_settings.php	2016-05-10 14:13:15.733650661 +0300
@@ -98,7 +98,7 @@
 			"friendly_name" => "Cacti Log File Path",
 			"description" => "The path to your Cacti log file (if blank, defaults to <path_cacti>/log/cacti.log)",
 			"method" => "filepath",
-			"default" => $config["base_path"] . "/log/cacti.log",
+			"default" => $config["log_path"] . "/cacti.log",
 			"max_length" => "255"
 			),
 		"pollerpaths_header" => array(
diff -ur cacti-0.8.8h/install/index.php cacti-0.8.8h.new/install/index.php
--- cacti-0.8.8h/install/index.php	2016-03-07 02:26:59.000000000 +0300
+++ cacti-0.8.8h.new/install/index.php	2016-05-10 14:13:15.755650462 +0300
@@ -267,7 +267,7 @@
 if (config_value_exists("path_cactilog")) {
 	$input["path_cactilog"]["default"] = read_config_option("path_cactilog");
 } else {
-	$input["path_cactilog"]["default"] = $config["base_path"] . "/log/cacti.log";
+	$input["path_cactilog"]["default"] = $config["log_path"] . "/cacti.log";
 }
 
 /* SNMP Version */
diff -ur cacti-0.8.8h/lib/functions.php cacti-0.8.8h.new/lib/functions.php
--- cacti-0.8.8h/lib/functions.php	2016-05-08 17:46:52.000000000 +0300
+++ cacti-0.8.8h.new/lib/functions.php	2016-05-10 14:13:15.756650453 +0300
@@ -495,7 +495,7 @@
 	/* Log to Logfile */
 	if ((($logdestination == 1) || ($logdestination == 2)) && (read_config_option("log_verbosity") != POLLER_VERBOSITY_NONE)) {
 		if ($logfile == "") {
-			$logfile = $config["base_path"] . "/log/cacti.log";
+			$logfile = $config["log_path"] . "/cacti.log";
 		}
 
 		/* echo the data to the log (append) */
Только в cacti-0.8.8h.new/lib: functions.php.orig
diff -ur cacti-0.8.8h/poller.php cacti-0.8.8h.new/poller.php
--- cacti-0.8.8h/poller.php	2016-02-07 22:26:54.000000000 +0300
+++ cacti-0.8.8h.new/poller.php	2016-05-10 14:13:15.756650453 +0300
@@ -1,3 +1,4 @@
+#!/usr/bin/php
 <?php
 /*
  +-------------------------------------------------------------------------+
@@ -60,7 +61,7 @@
 $no_http_headers = true;
 
 /* start initialization section */
-include(dirname(__FILE__) . "/include/global.php");
+require "/usr/share/cacti/include/global.php";
 include_once($config["base_path"] . "/lib/poller.php");
 include_once($config["base_path"] . "/lib/data_query.php");
 include_once($config["base_path"] . "/lib/graph_export.php");
diff -ur cacti-0.8.8h/utilities.php cacti-0.8.8h.new/utilities.php
--- cacti-0.8.8h/utilities.php	2016-02-07 22:26:54.000000000 +0300
+++ cacti-0.8.8h.new/utilities.php	2016-05-10 14:45:24.014429433 +0300
@@ -773,12 +773,12 @@
 }
 
 function utilities_view_logfile() {
-	global $log_tail_lines, $page_refresh_interval, $refresh;
+	global $config, $log_tail_lines, $page_refresh_interval, $refresh;
 
 	$logfile = read_config_option("path_cactilog");
 
 	if ($logfile == "") {
-		$logfile = "./log/rrd.log";
+		$logfile = $config['log_path']. "/rrd.log";
 	}
 
 	/* helps determine output color */
@@ -1014,6 +1014,7 @@
 }
 
 function utilities_clear_logfile() {
+        global $config;
 	load_current_session_value("refresh", "sess_logfile_refresh", read_config_option("log_refresh_interval"));
 
 	$refresh["seconds"] = get_request_var_request("refresh");
@@ -1024,7 +1025,7 @@
 	$logfile = read_config_option("path_cactilog");
 
 	if ($logfile == "") {
-		$logfile = "./log/cacti.log";
+		$logfile = $config['log_path']."/cacti.log";
 	}
 
 	html_start_box("<strong>Clear Cacti Log File</strong>", "100%", "", "1", "center", "");