CentOS 7にPHP-FPM 5.6をインストール（Remi's RPM repository）

# はじめに

Remi's RPM repositoryを利用してCentOS7にPHP-FPM5.6をインストール
親記事：[PHP, PHP-FPMの各種インストール方法とEOLまとめ](https://qiita.com/witchcraze/items/dfe3823554b7caba6f6a)
参考：[Remi's RPM repository](https://rpms.remirepo.net/wizard/)

## サポート

本手法で導入した場合、[PHP: Supported Versions](https://www.php.net/supported-versions.php)/[PHP: Unsupported Branches](https://www.php.net/eol.php)より、2018-12-31がEOLになると思われる。
それ以降に報告された脆弱性や不具合への対応は実施されない可能性がある。
(メンテナーの御慈悲でその後もアップデートされているが、いつまで続くかはわからない)

## note

- インストール後の更新は `yum --enablerepo=remi-php56 update`

## LOG

### インストール

```shell-session
# cat /etc/redhat-release
CentOS Linux release 7.7.1908 (Core)

# yum install -y https://rpms.remirepo.net/enterprise/remi-release-7.rpm
... 略

# yum install -y --enablerepo=remi-php56 php-fpm which
... 略
=====================================================================

  WARNING : PHP 5.6 have reached its "End of Life" in
  January 2019. Even, if this package includes some of
  the important security fix, backported from 7.1, the
  UPGRADE to a maintained version is very strongly RECOMMENDED.

=====================================================================
... 略
```

### php-fpm起動/停止

```shell-session
# systemctl start php-fpm
# systemctl status php-fpm
● php-fpm.service - The PHP FastCGI Process Manager
   Loaded: loaded (/usr/lib/systemd/system/php-fpm.service; disabled; vendor preset: disabled)
   Active: active (running) since Sat 2019-09-28 05:25:37 UTC; 4s ago
 Main PID: 225 (php-fpm)
   Status: "Ready to handle connections"
   CGroup: /docker/5918d1cebd637549adc79b935c1ca91e6dabbb092ed42b9e9953b307c0617568/system.slice/php-fpm.service
           tq225 php-fpm: master process (/etc/php-fpm.conf)
           tq226 php-fpm: pool www
           tq227 php-fpm: pool www
           tq228 php-fpm: pool www
           tq229 php-fpm: pool www
           mq230 php-fpm: pool www
           ? 225 php-fpm: master process (/etc/php-fpm.conf)

Sep 28 05:25:37 5918d1cebd63 systemd[1]: Starting The PHP FastCGI Process Manager...
Sep 28 05:25:37 5918d1cebd63 systemd[1]: Started The PHP FastCGI Process Manager.
```

```shell-session
# systemctl stop php-fpm
# systemctl status php-fpm
● php-fpm.service - The PHP FastCGI Process Manager
   Loaded: loaded (/usr/lib/systemd/system/php-fpm.service; disabled; vendor preset: disabled)
   Active: inactive (dead)

Sep 28 05:25:37 5918d1cebd63 systemd[1]: Starting The PHP FastCGI Process Manager...
Sep 28 05:25:37 5918d1cebd63 systemd[1]: Started The PHP FastCGI Process Manager.
Sep 28 05:26:17 5918d1cebd63 systemd[1]: Stopping The PHP FastCGI Process Manager...
Sep 28 05:26:17 5918d1cebd63 systemd[1]: Stopped The PHP FastCGI Process Manager.
```

### php-fpm自動起動設定/設定解除

```shell-session
# systemctl enable php-fpm
Created symlink from /etc/systemd/system/multi-user.target.wants/php-fpm.service to /usr/lib/systemd/system/php-fpm.service.

# systemctl list-unit-files --type=service | grep php-fpm
php-fpm.service                        enabled
```

```shell-session
# systemctl disable php-fpm
Removed symlink /etc/systemd/system/multi-user.target.wants/php-fpm.service.

# systemctl list-unit-files --type=service |grep php-fpm
php-fpm.service                        disabled
```

### 各種確認

```shell-session
# which php
which: no php in (/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin)

# which php-fpm
/usr/sbin/php-fpm

# php-fpm -v
PHP 5.6.40 (fpm-fcgi) (built: Aug 28 2019 15:05:35)
Copyright (c) 1997-2016 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2016 Zend Technologies

# yum info php-fpm
Loaded plugins: fastestmirror, ovl
Loading mirror speeds from cached hostfile
 * base: ftp.iij.ad.jp
 * epel: ftp.riken.jp
 * extras: ftp.iij.ad.jp
 * remi-safe: ftp.riken.jp
 * updates: ftp.iij.ad.jp
Installed Packages
Name        : php-fpm
Arch        : x86_64
Version     : 5.6.40
Release     : 13.el7.remi
Size        : 4.3 M
Repo        : installed
From repo   : remi-php56
Summary     : PHP FastCGI Process Manager
URL         : http://www.php.net/
License     : PHP and Zend and BSD and MIT and ASL 1.0
Description : PHP-FPM (FastCGI Process Manager) is an alternative PHP FastCGI
            : implementation with some additional features useful for sites of
            : any size, especially busier sites.
```

### パッケージ更新状況

```shell-session
# rpm -q -changelog php-fpm | head -n 20
* Wed Aug 28 2019 Remi Collet <remi@remirepo.net> - 5.6.40-13
- mbstring:
  Fix CVE-2019-13224 don't allow different encodings for onig_new_deluxe
- pcre:
  Fix #75457 heap use-after-free in pcrelib

* Tue Jul 30 2019 Remi Collet <remi@remirepo.net> - 5.6.40-12
- exif:
  Fix #78256 heap-buffer-overflow on exif_process_user_comment
  CVE-2019-11042
  Fix #78222 heap-buffer-overflow on exif_scan_thumbnail
  CVE-2019-11041
- phar:
  Fix #77919 Potential UAF in Phar RSHUTDOWN

* Tue Jul 02 2019 Remi Collet <remi@remirepo.net> - 5.6.40-11
- use oracle client library version 19.3

* Tue May 28 2019 Remi Collet <remi@remirepo.net> - 5.6.40-9
- iconv:
```