nginxをソースからDebianにインストールした時のメモ


ほぼ[Debian 7 Wheezy - Web サーバ Nginx をインストール（ソースビルド）！](http://www.mk-mode.com/octopress/2013/10/28/debian-7-install-nginx-by-src/)のままだけど、一応自分なりにまとめておく。

## ソースの取得

[nginxのダウンロードページ](http://nginx.org/en/download.html)から安定版のソースへのURLをコピーして、対象のホストで取得。

(今回は1.6.3)

```bash:console
$ wget http://nginx.org/download/nginx-1.6.3.tar.gz
```

ダウンロードしたら解凍してカレントディレクトリを移動。

```bash:console
$ tar xvzf nginx-1.6.3.tar.gz
$ cd nginx-1.6.3
```

## ビルド

今後のバージョンアップ時にいつでも一つ前に戻せるように、現在インストールされているものを上書きするのではなく```/usr/local/nginx/<バージョン番号>``` にインストールします。
起動時に問題が発生したら起動するバージョンを一つ前に戻せば起動するはず...という算段。

まあイミュータブルインフラストラクチャが浸透しつつある現在では古い考え方ですが。

```bash:console
$ ./configure --prefix=/usr/local/nginx/1.6.3 --user=www-data --group=www-data --pid-path=/var/run/nginx.pid --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --lock-path=/var/run/nginx.lock --with-http_ssl_module --with-http_realip_module

$ make
$ sudo make install
```

### 設定

設定ファイルは```/usr/local/nginx/<バージョン番号>/conf```以下にある。
もし現行使用しているものをそのまま使いたい場合は、このデフォルト設定ファイルを対比してシンボリックリンクを貼れば良い。

```bash:console
$ cd /usr/local/nginx/<バージョン番号>/
$ sudo mv conf conf.org
$ sudo ln -s /etc/nginx conf
```

### 起動スクリプト

以下のような起動スクリプトを用意

```bash:/etc/init.d/nginx
#! /bin/sh
### BEGIN INIT INFO
# Provides:          nginx
# Required-Start:    $all
# Required-Stop:     $all
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Example initscript
# Description:       Start script of Nginx
#                    Start/Stop the nginx daemon
### END INIT INFO

# Author: Administrator <shin@komatsuelec.co.jp>
#
# Please remove the "Author" lines above and replace them
# with your own name if you copy and modify this script.

# Do NOT "set -e"

# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="Nginx Daemon"
NAME=nginx
DAEMON=/usr/local/nginx/1.6.3/sbin/nginx
#DAEMON_ARGS="--options args"
PIDFILE=/var/run/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME

# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0

# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME

# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh

# Define LSB log_* functions.
# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions

#
# Function that starts the daemon/service
#
do_start()
{
	# Return
	#   0 if daemon has been started
	#   1 if daemon was already running
	#   2 if daemon could not be started
	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \
		|| return 1
	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \
		$DAEMON_ARGS \
		|| return 2
	# Add code here, if necessary, that waits for the process to be ready
	# to handle requests from services started subsequently which depend
	# on this one.  As a last resort, sleep for some time.
}

#
# Function that stops the daemon/service
#
do_stop()
{
	# Return
	#   0 if daemon has been stopped
	#   1 if daemon was already stopped
	#   2 if daemon could not be stopped
	#   other if a failure occurred
	start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME
	RETVAL="$?"
	[ "$RETVAL" = 2 ] && return 2
	# Wait for children to finish too if this is a daemon that forks
	# and if the daemon is only ever run from this initscript.
	# If the above conditions are not satisfied then add some other code
	# that waits for the process to drop all resources that could be
	# needed by services started subsequently.  A last resort is to
	# sleep for some time.
	start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON
	[ "$?" = 2 ] && return 2
	# Many daemons don't delete their pidfiles when they exit.
	rm -f $PIDFILE
	return "$RETVAL"
}

#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
	#
	# If the daemon can reload its configuration without
	# restarting (for example, when it is sent a SIGHUP),
	# then implement that here.
	#
	start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME
	return 0
}

case "$1" in
  start)
	[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
	do_start
	case "$?" in
		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
	esac
	;;
  stop)
	[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
	do_stop
	case "$?" in
		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
	esac
	;;
  #reload|force-reload)
	#
	# If do_reload() is not implemented then leave this commented out
	# and leave 'force-reload' as an alias for 'restart'.
	#
	#log_daemon_msg "Reloading $DESC" "$NAME"
	#do_reload
	#log_end_msg $?
	#;;
  restart|force-reload)
	#
	# If the "reload" option is implemented then remove the
	# 'force-reload' alias
	#
	log_daemon_msg "Restarting $DESC" "$NAME"
	do_stop
	case "$?" in
	  0|1)
		do_start
		case "$?" in
			0) log_end_msg 0 ;;
			1) log_end_msg 1 ;; # Old process is still running
			*) log_end_msg 1 ;; # Failed to start
		esac
		;;
	  *)
	  	# Failed to stop
		log_end_msg 1
		;;
	esac
	;;
  *)
	#echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2
	echo "Usage: $SCRIPTNAME {start|stop|restart|force-reload}" >&2
	exit 3
	;;
esac

:
```

起動

```bash:console
$ sudo /etc/init.d/nginx start
```