phpMyAdminをphp-fpmをやめてNGINX Unitで動かす　 ref: http://qiita.com/freddiefujiwara/items/9bd4d94cfe8f7e89de25

file0.txt

$ wget http://nginx.org/keys/nginx_signing.key
$ sudo apt-key add nginx_signing.key
$ sudo su
# echo 'deb http://nginx.org/packages/mainline/ubuntu/ xenial nginx' >> /etc/apt/sources.list.d/nginx.list 
# echo 'deb-src http://nginx.org/packages/mainline/ubuntu/ xenial nginx' >> /etc/apt/sources.list.d/nginx.list 
# apt-get update
# apt-get install unit

file1.txt

 # service unitd start

file3.txt

# service unitd restoreconfig /etc/unit/phpmyadmin.json
Restoring configuration from /etc/unit/phpmyadmin.json..
{
        "success": "Reconfiguration done."
}

file4.txt

server {
        server_name phpmyadmin.example.com;

        root        /usr/share/phpmyadmin;
        index       index.html index.php;
        access_log  /var/log/nginx/phpmyadmin.example.com.access_log;
        error_log   /var/log/nginx/phpmyadmin.example.com.error_log;
        #fpmの設定をコメントアウト
        #location ~ \.php {
        #        fastcgi_pass    unix:/var/run/php5-fpm.phpmyadmin.example.com.sock;
        #        fastcgi_index   index.php;
        #        fastcgi_param   SCRIPT_FILENAME $document_root$fastcgi_script_name;
        #        include fastcgi_params;
        #}
　　　　 #あらたにunitdのための設定を追加
        location / {
            proxy_pass http://127.0.0.1:8300/;
        }
}

file5.txt

# service nginx restart

phpmyadmin.conf

server {
        server_name phpmyadmin.example.com;

        root        /usr/share/phpmyadmin;
        index       index.html index.php;
        access_log  /var/log/nginx/phpmyadmin.example.com.access_log;
        error_log   /var/log/nginx/phpmyadmin.example.com.error_log;
        #fpmの設定をコメントアウト
        #location ~ \.php {
        #        fastcgi_pass    unix:/var/run/php5-fpm.phpmyadmin.example.com.sock;
        #        fastcgi_index   index.php;
        #        fastcgi_param   SCRIPT_FILENAME $document_root$fastcgi_script_name;
        #        include fastcgi_params;
        #}
　　　　 #あらたにunitdのための設定を追加
        location / {
            proxy_pass http://127.0.0.1:8300/;
        }
}

phpmyadmin.json

{
     "listeners": {
         "*:8300": {
             "application": "phpmyadmin"
         }
     },
     "applications": {
         "phpmyadmin": {
             "type": "php",
              "workers": 20,
              "root": "/usr/share/phpmyadmin",
              "index": "index.php"
         }
     }
}