Cacti : インストール2022/12/14

# apache2 を選択
   +-------------------------+ Configuring cacti +--------------------------+
   | Please select the web server for which Cacti should be automatically   |
   | configured.                                                            |
   |                                                                        |
   | Select "None" if you would like to configure the web server manually.  |
   |                                                                        |
   | Web server:                                                            |
   |                                                                        |
   |                                apache2                                 |
   |                                lighttpd                                |
   |                                None                                    |
   |                                                                        |
   |                                                                        |
   |                                 <Ok>                                   |
   |                                                                        |
   +------------------------------------------------------------------------+

# No を選択
 +---------------------------+ Configuring cacti +---------------------------+
 |                                                                           |
 | The cacti package must have a database installed and configured before    |
 | it can be used.  This can be optionally handled with dbconfig-common.     |
 |                                                                           |
 | If you are an advanced database administrator and know that you want to   |
 | perform this configuration manually, or if your database has already      |
 | been installed and configured, you should refuse this option.  Details    |
 | on what needs to be done should most likely be provided in                |
 | /usr/share/doc/cacti.                                                     |
 |                                                                           |
 | Otherwise, you should probably choose this option.                        |
 |                                                                           |
 | Configure database for cacti with dbconfig-common?                        |
 |                                                                           |
 |                    <Yes>                       <No>                       |
 |                                                                           |
 +---------------------------------------------------------------------------+

# 18, 19行目 : 任意のロケーション名称とメールアドレスに変更
sysLocation    "Server World"
sysContact     "root@dlp.srv.world"

# 71, 72行目 : コメント化
# 73行目 : 任意のコミュニティ名を追記
#rocommunity  public default -V systemonly
#rocommunity6 public default -V systemonly
rocommunity Serverworld localhost

SNMPv2-MIB::sysDescr.0 = STRING: Linux dlp.srv.world 5.15.0-47-generic #51-Ubuntu SMP Thu Aug 11 07:51:15 UTC 2022 x86_64
SNMPv2-MIB::sysObjectID.0 = OID: NET-SNMP-MIB::netSnmpAgentOIDs.10
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (1121) 0:00:11.21
SNMPv2-MIB::sysContact.0 = STRING: "root@dlp.srv.world"
SNMPv2-MIB::sysName.0 = STRING: dlp.srv.world
SNMPv2-MIB::sysLocation.0 = STRING: "Server World"
SNMPv2-MIB::sysServices.0 = INTEGER: 72
.....
.....
SNMPv2-MIB::sysORUpTime.8 = Timeticks: (0) 0:00:00.00
SNMPv2-MIB::sysORUpTime.9 = Timeticks: (0) 0:00:00.00
SNMPv2-MIB::sysORUpTime.10 = Timeticks: (0) 0:00:00.00

Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 60
Server version: 10.6.11-MariaDB-0ubuntu0.22.04.1 Ubuntu 22.04

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> create database cacti character set utf8mb4 collate utf8mb4_unicode_ci; 
Query OK, 1 row affected (0.00 sec)

# [password] は任意のパスワードに置き換え
MariaDB [(none)]> grant all privileges on cacti.* to cacti@'localhost' identified by 'password'; 
Query OK, 0 rows affected (0.00 sec)

# Cacti 動作要件として [mysql] DB の [time_zone_name] に [select] 権限付与
MariaDB [(none)]> grant select on mysql.time_zone_name to cacti@'localhost'; 

MariaDB [(none)]> exit
Bye

// 45行目 : DB 接続情報を変更
$database_type     = 'mysql';
$database_default  = 'cacti';
$database_hostname = 'localhost';
$database_username = 'cacti';
$database_password = 'password';
$database_port     = '3306';
.....
.....

# [mysqld] セクションに追記 (Cacti 要件)
[mysqld]
character-set-server=utf8mb4
character_set_client=utf8mb4
collation-server=utf8mb4_unicode_ci
max_heap_table_size=128M
tmp_table_size=128M
join_buffer_size=256M
innodb_buffer_pool_size=2048M
innodb_flush_log_at_timeout=3
innodb_read_io_threads=32
innodb_write_io_threads=16
innodb_buffer_pool_instances=17
innodb_io_capacity=5000
innodb_io_capacity_max=10000
innodb_doublewrite=off

# 103, 104行目 : コメント化
#character-set-server  = utf8mb4
#collation-server      = utf8mb4_general_ci