Ubuntu 10.10 Cacti Plugin Architecture Install

[cnrz]

Hello,
Fairly new to cacti and Ubuntu. We installed cacti on Ubuntu Server 10.10 without any problem. We may configure and see the Interface Utilization graphs for different hosts. Also installed the Advanced Ping Template, and we may see the graphs of devices added as well, so we think cacti installation is ok.

We also want to install thold and weathermap plugins, and first we installed the Plugin Architecture cacti-plugin-0.8.7g-PA-v2.8.tar.

We have followed the 2 ways of installing the PIA cacti-plugin-0.8.7g-PA-v2.8.tar, following the link http://docs.cacti.net/manual:087:1_installation.9_pia. Both the using pre-patched files method, and using the patch.

After installation we tried to edit the config.php and global.php under /usr/share/cacti/site/include according to this links:

http://ubuntuforums.org/showthread.php?t=1428193
http://cactiusers.org/forums/topic1631.html


What we end up is that if try to login to Cacti with http://IP_Address/cacti, a white empty page opens. Even the login page does not appear. If we look at the /var/log/apache2/error.log we see that

PHP Parse error: syntax error, unexpected '[' in /usr/share/cacti/site/include/global.php on line 105.

Line 105 of the global.php is 105 $config["library_path"] = ereg_replace("(.*[\\\/])include", "\\1lib", dirname(__FILE__));

Why may we getting this error, and how can we correct it?

Thanks in Advance,
Best Regards,




The global.php and config.php files are as below:


1 <?php
2 /*
3 +-------------------------------------------------------------------------+
4 | Copyright (C) 2004-2010 The Cacti Group |
5 | |
6 | This program is free software; you can redistribute it and/or |
7 | modify it under the terms of the GNU General Public License |
8 | as published by the Free Software Foundation; either version 2 |
9 | of the License, or (at your option) any later version. |
10 | |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | GNU General Public License for more details. |
15 +-------------------------------------------------------------------------+
16 | Cacti: The Complete RRDTool-based Graphing Solution |
17 +-------------------------------------------------------------------------+
18 | This code is designed, written, and maintained by the Cacti Group. See |
19 | about.php and/or the AUTHORS file for specific developer information. |
20 +-------------------------------------------------------------------------+
21 | http://www.cacti.net/ |
22 +-------------------------------------------------------------------------+
23 */
24
25 /*
26 !!! IMPORTANT !!!
27
28 The following defaults are not to be altered. Please refer to
29 include/config.php for user configurable database settings.
30
31 */
32
33 /* Default database settings*/
34 $database_type = "mysql";
35 $database_default = "cacti";
36 $database_hostname = "localhost";
37 $database_username = "cactiuser";
38 $database_password = "cactiuser";
39 $database_port = "3306";
40
41 /* Default session name - Session name must contain alpha characters */
42 $cacti_session_name = "Cacti";
43
44 /* Include configuration */
45 include(dirname(__FILE__) . "/config.php");
46
47 if (isset($config["cacti_version"])) {
48 die("Invalid include/config.php file detected.");
49 exit;
50 }
51
52 /* display ALL errors,
53 * but suppress deprecated warnings as a workaround until 088 */
54 if (defined("E_DEPRECATED")) {
55 error_reporting(E_ALL ^ E_DEPRECATED);
56 }else{
57 error_reporting(E_ALL);
58 }
59
60 /* Files that do not need http header information - Command line scripts */
61 $no_http_header_files = array(
62 "cmd.php",
63 "poller.php",
64 "poller_commands.php",
65 "script_server.php",
66 "query_host_cpu.php",
67 "query_host_partitions.php",
68 "sql.php",
69 "ss_host_cpu.php",
70 "ss_host_disk.php",
71 "ss_sql.php",
72 "add_device.php",
73 "add_graphs.php",
74 "add_perms.php",
75 "add_tree.php",
76 "copy_user.php",
77 "host_update_template.php",
78 "poller_export.php",
79 "poller_graphs_reapply_names.php",
80 "poller_output_empty.php",
81 "poller_reindex_hosts.php",
82 "rebuild_poller_cache.php",
83 "repair_database.php",
84 "structure_rra_paths.php"
85 );
86
87 $config = array();
88 $colors = array();
89
90 /* this should be auto-detected, set it manually if needed */
91 $config["cacti_server_os"] = (strstr(PHP_OS, "WIN")) ? "win32" : "unix";
92
93 /* built-in snmp support */
94 $config["php_snmp_support"] = function_exists("snmpget");
95
96 /* set URL path */
97 if (! isset($url_path)) {
98 $url_path = "";
99 }
100 $config['url_path'] = $url_path;
101 define('URL_PATH', $url_path);
102
103 /* used for includes */
104 $config["base_path"] = strtr(ereg_replace("(.*)[\\\/]include", "\\1", dirname(__FILE__)), "\\", "/");
105 $config["library_path"] = ereg_replace("(.*[\\\/])include", "\\1lib", dirname(__FILE__));
106 $config["include_path"] = dirname(__FILE__);
107 $config["rra_path"] = "var/lib/cacti/rra";
108
109 /* colors */
110 $colors["dark_outline"] = "454E53";
111 $colors["dark_bar"] = "AEB4B7";
112 $colors["panel"] = "E5E5E5";
113 $colors["panel_text"] = "000000";
114 $colors["panel_link"] = "000000";
115 $colors["light"] = "F5F5F5";
116 $colors["alternate"] = "E7E9F2";
117 $colors["panel_dark"] = "C5C5C5";
118
119 $colors["header"] = "00438C";
120 $colors["header_panel"] = "6d88ad";
121 $colors["header_text"] = "ffffff";
122 $colors["form_background_dark"] = "E1E1E1";
123
124 $colors["form_alternate1"] = "F5F5F5";
125 $colors["form_alternate2"] = "E5E5E5";
126
127 if ((!in_array(basename($_SERVER["PHP_SELF"]), $no_http_header_files, true)) && ($_SERVER["PHP_SELF"] != "")) {
128 /* Sanity Check on "Corrupt" PHP_SELF */
129 if ($_SERVER["SCRIPT_NAME"] != $_SERVER["PHP_SELF"]) {
130 echo "\nInvalid PHP_SELF Path \n";
131 exit;
132 }
133
134 /* we don't want these pages cached */
135 header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
136 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
137 header("Cache-Control: no-store, no-cache, must-revalidate");
138 header("Cache-Control: post-check=0, pre-check=0", false);
139 header("Pragma: no-cache");
140 /* prevent IE from silently rejects cookies sent from third party sites. */
141 header('P3P: CP="CAO PSA OUR"');
142
143 /* initilize php session */
144 session_name($cacti_session_name);
145 session_start();
146
147 /* detect and handle get_magic_quotes */
148 if (!get_magic_quotes_gpc()) {
149 function addslashes_deep($value) {
150 $value = is_array($value) ? array_map('addslashes_deep', $value) : addslashes($value);
151 return $value;
152 }
153
154 $_POST = array_map('addslashes_deep', $_POST);
155 $_GET = array_map('addslashes_deep', $_GET);
156 $_COOKIE = array_map('addslashes_deep', $_COOKIE);
157 }
158
159 /* make sure to start only only Cacti session at a time */
160 if (!isset($_SESSION["cacti_cwd"])) {
161 $_SESSION["cacti_cwd"] = $config["base_path"];
162 }else{
163 if ($_SESSION["cacti_cwd"] != $config["base_path"]) {
164 session_unset();
165 session_destroy();
166 }
167 }
168 }
169
170 /* emulate 'register_globals' = 'off' if turned on */
171 if ((bool)ini_get("register_globals")) {
172 $not_unset = array("_GET", "_POST", "_COOKIE", "_SERVER", "_SESSION", "_ENV", "_FILES", "database_type", "database_default", "database_hostname", "database_username", "database_password", "config", "colors");
173
174 /* Not only will array_merge give a warning if a parameter is not an array, it will
175 * actually fail. So we check if HTTP_SESSION_VARS has been initialised. */
176 if (!isset($_SESSION)) {
177 $_SESSION = array();
178 }
179
180 /* Merge all into one extremely huge array; unset this later */
181 $input = array_merge($_GET, $_POST, $_COOKIE, $_SERVER, $_SESSION, $_ENV, $_FILES);
182
183 unset($input["input"]);
184 unset($input["not_unset"]);
185
186 while (list($var,) = @each($input)) {
187 if (!in_array($var, $not_unset)) {
188 unset($$var);
189 }
190 }
191
192 unset($input);
193 }
194
195 /* include base modules */
196 include($config["library_path"] . "/adodb/adodb.inc.php");
197 include("/usr/share/php/adodb/adodb.inc.php");
198 /* connect to the database server */
199 db_connect_real($database_hostname, $database_username, $database_password, $database_default, $database_type, $database_port);
200
201 /* include additional modules */
202 include_once($config["library_path"] . "/functions.php");
203 include_once($config["include_path"] . "/global_constants.php");
204 include_once($config["library_path"] . "/plugins.php");
205 include_once($config["include_path"] . "/plugins.php");
206 include_once($config["include_path"] . "/global_arrays.php");
207 include_once($config["include_path"] . "/global_settings.php");
208 include_once($config["include_path"] . "/global_form.php");
209 include_once($config["library_path"] . "/html.php");
210 include_once($config["library_path"] . "/html_form.php");
211 include_once($config["library_path"] . "/html_utility.php");
212 include_once($config["library_path"] . "/html_validate.php");
213 include_once($config["library_path"] . "/variables.php");
214 include_once($config["library_path"] . "/auth.php");
215
216 api_plugin_hook("config_insert");
217
218 /* current cacti version */
219 $config["cacti_version"] = "0.8.7g";
220
221 ?>





1 <?php
2 /*
3 +-------------------------------------------------------------------------+
4 | Copyright (C) 2004-2010 The Cacti Group |
5 | |
6 | This program is free software; you can redistribute it and/or |
7 | modify it under the terms of the GNU General Public License |
8 | as published by the Free Software Foundation; either version 2 |
9 | of the License, or (at your option) any later version. |
10 | |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | GNU General Public License for more details. |
15 +-------------------------------------------------------------------------+
16 | Cacti: The Complete RRDTool-based Graphing Solution |
17 +-------------------------------------------------------------------------+
18 | This code is designed, written, and maintained by the Cacti Group. See |
19 | about.php and/or the AUTHORS file for specific developer information. |
20 +-------------------------------------------------------------------------+
21 | http://www.cacti.net/ |
22 +-------------------------------------------------------------------------+
23 */
24
25 /* make sure these values refect your actual database/host/user/password */
26 $database_type = "mysql";
27 $database_default = "cacti";
28 $database_hostname = "localhost";
29 $database_username = "root";
30 $database_password = "Cactipass";
31 $database_port = "3306";
32
33 /* load up old style plugins here */
34 $plugins = array();
35 //$plugins[] = 'thold';
36
37 /*
38 Edit this to point to the default URL of your Cacti install
39 ex: if your cacti install as at http://serverip/cacti/ this
40 would be set to /cacti/
41 */
42 /*$url_path = "/";*/
43 $url_path = "/cacti/";
44
45 /* Default session name - Session name must contain alpha characters */
46 #$cacti_session_name = "Cacti";
47
48 ?>

[noname]

Perhaps you have mistaken around here:

196 include($config["library_path"] . "/adodb/adodb.inc.php");
197 include("/usr/share/php/adodb/adodb.inc.php");

I guess that page says to change the line 196, not 197.

(Original code in global.php is below)

Code: Select all

include($config["library_path"] . "/adodb/adodb.inc.php");
include($config["library_path"] . "/database.php");

I'm not familiar with Ubuntu, but I'm not sure whether if these changes are really necessary for this version of Cacti...

[cnrz]

Hello noname,

Thank you, we corrected that line, which I think we would meet if we passed the line 105 error.

What is interesting is that even if we comment out line 105, we meet again the exactly same mistake in line 105 of /var/log/apache2/error.log.

Our line 105 is only a comment, so this is interesting how a comment may lead to a parser error:
/* commented out for test purposes. $config["library_path"] = ereg_replace("(.*[\\\/])include", "\\1lib",
dirname(__FILE__)); */

/var/log/apache2/error.log
PHP Parse error: syntax error, unexpected '[' in /usr/share/cacti/site/include/global.php on line 105

[cnrz]

Hello,

We have made some changes on the global.php file wrt to the line 105 error, but the error stays the same whatever the change is made.


1. We commented out the line 105, inorder to observe this case, but even if commented out the error did not change.
2. Since the Error did not change, we removed the lines and given static entries for base_path and library_path values as below. But even in this case the error did not change.

#REMOVED LINES:
$config["base_path"] = strtr(ereg_replace(“(.*)[\/\\]include”, “\\1″, dirname(__FILE__)), “\\”, “/”);
$config["library_path"] = ereg_replace(“(.*[\/\\])include”, “\\1lib”, dirname(__FILE__));
#ADDED LINES:
$config["base_path"] = ‘/usr/share/cacti/site’;
$config["library_path"] = ‘/usr/share/cacti/site/lib’;

3. We removed the commented out lines and given a space instead of line 105, i.e. line 105 is a blank line. Even in this case the error does not change, which is very interesting.
PHP Parse error: syntax error, unexpected '[' in /usr/share/cacti/site/include/global.php on line 105

Is there any possibility that the file is affected from some other parameter or value?

[cnrz]

Hi all,

After going through some changes, for both files, the Cacti Plugin Architecture was installed and we may hereafter install plugins easily. The main point is changing some of the global.php, config.php and /etc/cacti/debian.php files. In the documentation debian.php file is not mentioned but it definitely affects the way PIA works. Only this link mentions briefly (http://forums.cacti.net/viewtopic.php?f ... 39#p209839). There may be additional methods but since this is working we think it may be used for Ubuntu Server 10.10.


The Installation consists of:
1. copying the PIA from cactiusers.org by: wget http://mirror.cactiusers.org/downloads/ ... 2.8.tar.gz

2. tar -zxvf cacti-plugin-0.8.7g-PA-v2.8.tar.gz

3. sudo cp cacti-plugin-arch/* /usr/share/cacti/site/ -R

4. Goto the folder cacti-plugin-arch (which you extracted from the download). In this folder is the pa.sql.Import the pa.sql file to the cacti database. If this is not done, graphics are not seen on the cacti web site:
/usr/local/mysql/bin/mysql --user=root --password=rootpw cacti < pa.sql (or mysql cacti < pa.sql -u root -p rootpw). Here you should write the root password given during the installation instead of rootpw.
The Changes made from the original installation files coming within cacti-plugin-0.8.7g-PA-v2.8.tar file is as follows: (Other lines left exactly the same, just copy them to /usr/share/cacti/site

STEP1: Change /usr/share/cacti/site/include/global.php as follows:

/* Line 37 $database_username = "cactiuser"; */

$database_username = "cacti";
/* Line 38 $database_password = "cactiuser"; */

$database_password = "enter your pass given during installation(not cactiuser)";

/Line 105 *$config['url_path'] = $url_path;*/

$config["url_path"] = '/cacti/';

/* Line 112 $config["rra_path"] = $config["base_path"] . '/rra';*/

$config["rra_path"] = "/var/lib/cacti/rra";

/* Line 202 include($config["library_path"] . "/adodb/adodb.inc.php");*/

include("/usr/share/php/adodb/adodb.inc.php");


STEP2: Change /usr/share/cacti/site/include/config.php as follows:
config.php is as follows (we don't do any changes in this file, all the additions are made to the debian.php file, but the patch file requires some changes to be made, we did the database setting
configuration on the /etc/cacti/debian.php file. $url_path = "/"; parameter is also changed on the global.php file.

<?php


/* make sure these values refect your actual database/host/user/password */
$database_type = "mysql";
require('/etc/cacti/debian.php');

/* Default session name - Session name must contain alpha characters */
#$cacti_session_name = "Cacti";

?>

/* load up old style plugins here */

$plugins = array();

STEP3: Change /etc/cacti/debian.php
/* Lines 14 and 15 */
$database_username='cacti';
$database_password='enter your pass given during the installation';
Add the following lines:
/* load up old style plugins here. You need to enter some old style plugins like syslog, but for new plugins you don't need to enter them here, by default they appear on plugin management link on the left */
$plugins = array();
$plugins[] = ‘ntop’;


Also, as a second alternative method to the above procedure, just use the patch command, but before using this command make sure that apache2 and mysql services are stopped with /etc/init.d/apache2 stop, and /etc/init.d/mysql stop.

1. Copy the cacti-plugin-arch.diff file to /usr/share/cacti/site with sudo cp cacti-plugin-arch.dif /usr/share/cacti/site command

patch -p1 -N --dry-run < cacti-plugin-arch.diff (see this does not give any errors
patch -p1 -N < cacti-plugin-arch.diff

2. Import the pa.sql file to the cacti database. If this is not done,
graphics are not seen on the cacti web site.
/usr/local/mysql/bin/mysql --user=root --password=rootpw cacti < pa.sql

3. After patching don't forget to restart both apache2 and mysql with
/etc/init.d/apache2 start
/etc/init.d/mysql start

[Brucewave]

Well,that's very interesting.










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