Files
Thomas Vincent cb29d10426 docs: fix stale version requirements and dead/insecure links (#208)
* docs: update stale PHP/MySQL/MariaDB version requirements

- Requirements.md: PHP 5.4 -> 8.1 (matches 1.2.31+ requirement note)
- Requirements.md: MySQL 5.6 -> 5.7, MariaDB 5.5 -> 10.2 (current minimums)
- Requirements.md: MySQL section header updated to >= 5.7 / 10.2
- Requirements.md, Install-Under-CentOS_LAMP.md,
  Install-Under-CentOS_LEMP.md, Installing-Under-Windows.md:
  comment out innodb_file_format and innodb_large_prefix (removed
  in MySQL 8.0 / MariaDB 10.3+)

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>

* docs: upgrade http:// links to https:// and fix dead wiki URLs

- Upgrade http:// to https:// in 8 files:
  General-Installing-Instructions.md, Graph-Templates.md,
  How-To-SSH-Tunnels.md, Plugin-Development.md,
  Standards-Code-Formatting.md, Templates.md,
  Upgrading-Cacti-Under-Windows.md
- Replace two dead docs.cacti.net wiki links:
  How-To-SSH-Tunnels.md: old wiki SNMP guide -> Net-SNMP man page
  Plugin-Syslog.md: dead plugin:syslog.config -> plugin_syslog repo

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>

* docs: fix technically inaccurate MySQL configuration recommendations

- innodb_additional_mem_pool_size: removed in MySQL 5.7.4 / MariaDB 10.0;
  replaced with removal notice in Requirements.md and comments in
  Install-Under-CentOS_LAMP.md and Install-Under-CentOS_LEMP.md
- max_heap_table_size: clarify ">= 5" means ">= 5% of system RAM"
- innodb_buffer_pool_size: clarify ">= 25" means ">= 25% of system RAM"

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>

* docs: add missing required PHP extensions to Requirements.md

Add dom, mysqlnd, pcntl, Phar, and sqlite3 — all declared as required
in composer.json but absent from the module list. pcntl is Linux-only
(process control for the poller).

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>

* docs: fix 36 spelling errors across 19 documentation files

Corrections detected by codespell:
- somone->someone, Walkthough->Walkthrough, GUAGE->GAUGE
- asociate->associate, messege->message, therefor->therefore
- get's->gets, Proxys->Proxies, paralelisation->parallelization
- parms->params (6 instances in script data query examples)
- finialise->finalise, buildin->built-in, everytime->every time
- Unistall->Uninstall, resiliant->resilient, build-in->built-in
- requriments->requirements (2 instances), explanitory->explanatory (3 instances)
- fro->for, invole->involve, reulting->resulting
- stauts->status, tge->the

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>

* ci: add codespell spelling check workflow for documentation

Adds GitHub Actions workflow that runs codespell==2.4.1 on all Markdown
files on every push/PR to main. Also adds .codespell.cfg to skip binary
and generated files (JSON, shell scripts, HTML, images).

Update .gitignore to allow .github directory (was blocked by .git* glob).

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>

* docs: improve voice, consistency, and note formatting across 10 files

- Convert passive/impersonal constructions to active voice
- Standardize NOTE -> Note in blockquotes for consistency
- Reformat inline IMPORTANT/Note callouts as blockquotes
- Fix awkward phrasing in LXC container notes
- Consolidate fragmented note bullets into single blockquote

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>

* docs: fix technical accuracy and correct typos across 10 files

- Requirements.md: clarify Composer is for source/develop installs only;
  RRDtool minimum updated to 1.5+ (1.8+ for 1.3.x); php-snmp section
  rewritten to describe selective fallback behavior; SELinux/AppArmor
  advice reworded to recommend policy exceptions over blanket disable
- Spine.md: fix PHP Script Server range (10 -> 15); fix 'senstivive'
  and 'Davices' typos
- Trees.md: fix broken table rows split across lines; 'Sporting' -> 'Sorting'
- Data-Sources.md: restructure storage table to standard 3-column layout;
  fix '19b' unit typo -> '19kb'
- How-To-SNMP-Custom-Script.md: convert bold/backtick commands to proper
  fenced code blocks; fix 'intex' and 'BNSMPD' typos
- Plugins.md: fix 'onfiguration' typo; fix YouTube thumbnail http -> https;
  fix 'Tuturial' typo
- Standards-Security.md: fix 'invalidate' -> 'invalid'
- template_apache_config.md: fix 'apcache2' -> 'apache2'
- device-template-specific-proxmox.md: replace service file edit with
  drop-in approach; remove ProtectSystem=off/ProtectHome=off; add note
  on minimal required systemd overrides
- resource/xml/query_interface_traffic.php: http -> https URL

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>

* docs: rename CentOS install guides to Enterprise Linux; fix grammar, logic, and security flaws

- Rename Install-Under-CentOS_LAMP.md → Install-Under-Enterprise-Linux-LAMP.md
- Rename Install-Under-CentOS_LEMP.md → Install-Under-Enterprise-Linux-LEMP.md
- Update README.md ToC links to match new filenames and correct labels

LAMP fixes:
- Title updated to reflect RHEL/Rocky Linux/AlmaLinux coverage
- Fix step numbering: "2.Install" / "3.Enable" missing space after number
- Spine build deps: restructure for EL7/EL8/EL9+ separately; EL8 was
  missing package install after repo enable; EL9+ uses 'crb' not 'powertools'
- SELinux URL: fix quadruple-slash typo; switch to English wiki URL

LEMP fixes:
- Title: "CentOS 7" → "Enterprise Linux (RHEL / Rocky Linux / AlmaLinux)"
- TLS: remove TLSv1 and TLSv1.1 (RFC 8996 prohibited, fails OpenSSL 3.x);
  set ssl_protocols TLSv1.2 TLSv1.3
- Ciphers: remove DH+3DES (Sweet32 / CVE-2016-2183)
- HTTP redirect: uncomment return 301 (comment claiming nginx lacks support
  for 'return' has been wrong since nginx 0.8 / 2009)
- PHP location block: fix 'alias' → 'root' (alias breaks $document_root in
  fastcgi_param SCRIPT_FILENAME); add missing semicolon after index directive
- Cron: poller path was /var/www/html/cacti but install target throughout
  this guide is /usr/share/nginx/html/cacti — align them
- DB: split GRANT...IDENTIFIED BY into CREATE USER + GRANT (IDENTIFIED BY
  on GRANT removed in MySQL 8.0 / MariaDB 10.5.2)
- Fix comment typo: "Compression increases performance0" → remove trailing 0
- SELinux URL: fix quadruple-slash typo

README.md:
- Update section 3.1 and 3.2 links to new filenames
- Correct labels from "CentOS 7" to "Enterprise Linux"
- Fix "Reports Admistrative Interface" → "Administrative"
- Fix "requriments" (×2) → "requirements"

* docs: remove Install-Under-CentOS_LAMP.md (superseded by Install-Under-Enterprise-Linux-LAMP.md)

* docs: remove Install-Under-CentOS_LEMP.md (superseded by Install-Under-Enterprise-Linux-LEMP.md)

* docs: update README ToC links and fix typos

- Update 3.1 and 3.2 links from CentOS to Enterprise Linux filenames
- Correct labels: "CentOS 7" → "Enterprise Linux (RHEL/Rocky/AlmaLinux)"
- Fix "Reports Admistrative" → "Reports Administrative"
- Fix "requriments" (×2) → "requirements"

* docs: fix grammar, logic, and technical errors in remaining install/upgrade guides

Installing-Under-Windows.md:
- Replace php_mysql.dll with php_pdo_mysql.dll (php_mysql removed in PHP 7.0)
- Remove IIS ISAPI steps referencing php8isapi.dll (ISAPI dropped in PHP 8.0);
  replace with FastCGI instructions via php-cgi.exe
- Remove NO_AUTO_CREATE_USER from sql_mode (removed MySQL 8.0, breaks startup)
- sort_buffer_size = 200M → 32M with caveat (per-session; 200M causes OOM under load)
- Fix step numbering gaps: main list 5→8, IIS 3→5, Finishing 5→8
- "you will have to user 8.3 notation" → "use"
- "c:cygwin" → "c:\cygwin" (missing backslash)
- "it's subfolders" → "its subfolders"
- "A anm example" → "An example"
- "verify/udate" → "verify/update"

Installing-Under-Ubuntu-Debian.md:
- Cron user: apache → www-data (apache user does not exist on Ubuntu/Debian)
- CREATE DATABASE: use utf8mb4 directly; remove redundant ALTER DATABASE
- php8.1-mbstring listed twice in apt-get install; deduplicated
- "may received" → "may receive"
- Note php8.1 is EOL; recommend checking current supported release

Upgrading-Cacti-Under-Windows.md:
- Fix all steps numbered 1. → proper sequential numbering (1–10)
- Remove hardcoded MySQL 5.7 path; use generic %MYSQL_HOME% note

Upgrading-Cacti-Under-FreeBSD.md:
- mysqldump: remove contradictory -l / --lock-tables=false flags;
  replace with --single-transaction (correct for InnoDB, no locking)

How-To-SSH-Tunnels.md:
- Add prominent note: SSH -L is TCP-only; standard SNMP uses UDP; this
  guide requires TCP transport configured on snmpd and does not work for
  most network devices
- Fix unclosed code fence after ssh-keygen output block
- Replace rc.local persistence with systemd unit (rc.local is deprecated
  and disabled by default on systemd distros: Ubuntu 16.04+, Debian 9+)
- ssh-keygen: recommend ed25519 over RSA

* docs: correct PHP 8.1 EOL date, Net-SNMP link, and grammar

PHP 8.1 security support ended 31 December 2025, not November 2024. Point the
snmpd.conf link at www.net-snmp.org (the sourceforge.io mirror is bot-blocked).
Fix 'There a two ways extending' to 'There are two ways to extend'.

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>

* ci: fix spelling workflow trigger to target develop, not main

The repo's default branch is develop; main hasn't moved since 2023.
The workflow's push/pull_request filters targeted main, so it never
ran on any PR opened against develop.

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>

---------

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
2026-08-16 20:34:31 +01:00

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Markdown

# Plugin Management
Installing or updating plugins on cacti is a simple procedure.
For most of the plugins a few basic steps are enough, which are described below.
Each plugin directory should contain a README.md file. We recommend to study
this file. It may contain important installation information.
## Installing Plugins
![plugins](images/plugins.png)
1. Download the plugin to cactidir/cacti/plugins
```console
git clone https://github.com/Cacti/plugin_thold.git
```
```console
mv plugin_thold /var/www/html/cacti/plugins
```
2. Now assign the proper permissions to the folder
```console
chown -R apache:apache plugin_thold
```
3. From `Console > Configuration > Plugins` Install the plugin by Clicking on
the wrench Icon as showng below.
Below you will now see the THOLD plugin available to install in this case we
are installing thold
![thold plugin](images/thold-install.png)
4. After installing the plugin by clicking on the grey gear you will now how to
enable it this can be done via clicking on the green check mark
![thold plugin enable](images/thold-enable.png)
After this, the **Plugin** is installed and enabled. However, there will likely
be configuration that must take place after the **Plugin** is enabled. See the
**Plugin** documentation for instructions on how to configure and use them.
## Updating a Plugin
Updating a plugin not only keeps you up to date with the latest release of the
code for that plugin. It also allows you to keep all of your settings for that
plugin ensure you DO NOT UNINSTALL the plugin. You must instead disable the
plugin which will not drop the SQL tables and thus save your settings.
1. Disable the **Plugin** you want to update
2. Backup the current **Plugin** folder typically in
`<path_cacti>/plugins/plugin_name`
```console
cp -R /var/www/html/cacti/plugin/thold /tmp
```
3. git pull or download the new version of the **Plugin**
```console
git pull
```
4. Change name of **Plugin** folder i.e plugin_thold to thold
```console
mv plugin_thold thold
```
5. Assign proper permissions usually either www-data for Ubuntu/debian or apache
for CentOS/RHEL
```console
chown -R apache:apache thold
```
6. Re-enable the **Plugin** in the **Console**
### Video Walkthrough
[![Video Tutorial](https://img.youtube.com/vi/TPKu-2XYKok/0.jpg)](https://youtu.be/TPKu-2XYKok)
## Uninstall a Plugin
To uninstall a plugin go into the plugins page
`Console > Configuration > Plugins` Click on the plugin to Disable the plugin.
Click on the red dot beside the plugin to uninstall the plugin a dialogue box
will appear now click uninstall.
![uninstall plugin](images/plugins-uninstall.png)
This will uninstall the plugin from cacti but will NOT remove the files from the
server to do that you must manually remove the plugin until you remove the files
the plugin will show to be available to be installed.
> **WARNING**: Uninstalling a Cacti **Plugin** generally also removes any
> database tables that that **Plugin** created, which means your data! Before
> uninstalling **Plugins**, it would be wise to have a backup strategy in place
> in case you accidentally uninstall a **Plugin** and loose your data!
### Dependencies in plugins
Some dependencies such as THOLD aka Thresholds rely on another plugin in this
case thold reliese on the monitor plugin which is missing in this case you will
see the below message box in order to continue you must install the required
plugin.
![plugin dependencies](images/plugins-dependencies.png)
### Delete plugin data and settings
Some plugins have new functionality and allow you to delete data and plugin
settings and start from scratcg. This can be done with the trash can icon in
Console > Configuration > Plugins
---
Copyright (c) 2004-2026 The Cacti Group