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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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Settings

Cacti has numerous settings that can be changed from the Web Interface. Cacti, from it's inception desired to have as many settings as possible to be configurable without having to goto the Command Line to make them. While, for the most part this is still true, there are several settings that must be configured in the config.php which we will cover in a separate sub-section.

The standard Settings sub-tabs include:

General - This is where Cacti holds a general collection of settings that every Cacti administrator should become familiar with.
Paths - Mostly, this sub-tab holds all settings that the Cacti administrator has control of. It also includes some settings around RRDfile maintenance.
Device Defaults - This is where you can establish presets that every new Cacti Device gets by default, through Automation, the CLI or though the Web Interface.
Poller - Though most Poller settings have been moved to the Data Collectors, some are still managed at the system level including the poller type to use, script server and a number of additional settings.
Data - This is where you can enable the RRDproxy and Data Source Statistics collection. The Data Source Statistics module allows for the saving of key metrics that are important in dash-boarding plugins in Cacti.
Visual - This is where you can set some preset like Graph and Data Source title lengths, and drop-down sizes these Visual settings are global in nature.
Authentication - This is where Cacti defines how Users are managed. There are three Classes of Users.

They include:
- Local Users - Authentication and Authorization all handled in Cacti. This means passwords are stored locally using strong encryption
- Basic Users - Authentication outside of Cacti, for example SAML2, TACACS+, NIS, etc.). Authorization remains in Cacti
- LDAP Users - Authentication outside of Cacti, either LDAP or Active Directory. Authorization remains in Cacti
- Multiple Domains - Multiple Authentication LDAP or Active Directory Domains with their own Authorization User Templates.
Performance - This is where Cacti's Boost functionality was moved to. Cacti's Boost module allows Cacti to scale to systems with over a million Graphs and Data Sources.
Spikes - This is a built-in tool for killing spikes on graphs in a scheduled fashion. It also holds system level spike killing defaults.
Mail/Reporting/DNS - This is where Cacti saves settings associated with these three services, for example Simple Mail Transfer Protocol (SMTP) settings used for general notification across all of Cacti.

In addition, to the base settings, Cacti Plugins can extend settings for their own purposes. When a Plugin has few settings that it uses, the Cacti Group has recommended a sub-tab called Misc for those Plugins for their purposes. Most Plugins conform to that guideline.

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Settings

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