RPi2/Debian Jessie

Debian Jessie on Raspberry Pi 2 †

お試し †

• イメージ(以下を使用)
  • http://sjoerd.luon.net/posts/2015/02/debian-jessie-on-rpi2/
    • https://images.collabora.co.uk/rpi2/jessie-rpi2-20150705.img.gz
  • イメージをMicroSDへ焼く(手順省略)

• sshログイン
  • 有線で接続
    • dhcpでIPアドレスが自動で割り振られる。
    • Login as root with password debian

• locale,timezone等の設定

  # dpkg-reconfigure locales　　# ja_JP.UTF-8 UTF-8 を選択
  # dpkg-reconfigure tzdata     # アジア→Tokyo を選択
  

• レポジトリ設定
  • /etc/apt/sources.list

    deb http://ftp.jp.debian.org/debian/ jessie main contrib non-free
    #deb-src http://ftp.jp.debian.org/debian/ jessie main contrib non-free
    #deb http://security.debian.org/ jessie/updates main contrib non-free
    #deb-src http://security.debian.org/ jessie/updates main contrib non-free
    
    deb https://repositories.collabora.co.uk/debian/ jessie rpi2
    

• パッケージ導入

  # apt-get update
  # apt-get upgrade
  # apt-get install emacs-nox screen
  # apt-get install wicd-curses firmware-ralink  # WiFi設定
  # apt-get install curl build-essential         # rpi-update
  

• WiFi設定
  • BUFFALO WLI-UC-GNW を使用
  • wicd-curses を使って設定

• USER と sudo 設定

  # adduser USER
  # gpasswd -a USER sudo
  

その他 †

• firmware(kernel等)の更新
  • rpi-updateの準備

    # wget -O /usr/local/bin/rpi-update https://raw.githubusercontent.com/Hexxeh/rpi-update/master/rpi-update
    # chmod +x /usr/local/bin/rpi-update
    

  • firmware更新

    # BOOT_PATH=/boot/firmware ROOT_PATH=/ rpi-update
    # reboot
    

• USB出力電流を増やす設定(1.2Aまで流せるようになる)
  • /boot/firmware/config.txt の最後に以下を追記

    safe_mode_gpio=4
    max_usb_current=1
    

• パーティション拡張
  • http://eco.senritu.net/raspberrypi_resizefs/ を参照
  • /dev/mmcblk0p2パーティションを削除し、再作成(開始セクタはそのままで,終了セクタを最大値にする)

    # fdisk /dev/mmcblk0
    Command (m for help): p
    Disk /dev/mmcblk0: 29.5 GiB, 31657558016 bytes, 61831168 sectors
    Units: sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disklabel type: dos
    Disk identifier: 0x50446648
    
    Device         Boot  Start      End  Sectors  Size Id Type
    /dev/mmcblk0p1        2048  249855  247808  121M  c W95 FAT32 (LBA)
    /dev/mmcblk0p2      249856 6146047 5896192  2.8G 83 Linux
    
    Command (m for help): d
    Partition number (1,2, default 2): 2
    
    Partition 2 has been deleted.
    
    Command (m for help): n
    Partition type
       p   primary (1 primary, 0 extended, 3 free)
       e   extended (container for logical partitions)
    Select (default p): p
    Partition number (2-4, default 2): 2
    First sector (249856-61831167, default 249856):
    Last sector, +sectors or +size{K,M,G,T,P} (249856-61831167, default 61831167):
    
    Created a new partition 2 of type 'Linux' and of size 29.4 GiB.
    
    Command (m for help): p
    Disk /dev/mmcblk0: 29.5 GiB, 31657558016 bytes, 61831168 sectors
    Units: sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disklabel type: dos
    Disk identifier: 0x50446648
    
    Device         Boot  Start      End  Sectors  Size Id Type
    /dev/mmcblk0p1        2048   249855   247808  121M  c W95 FAT32 (LBA)
    /dev/mmcblk0p2      249856 61831167 61581312 29.4G 83 Linux
    
    
    Command (m for help): w
    The partition table has been altered.
    Calling ioctl() to re-read partition table.
    Re-reading the partition table failed.: Device or resource busy
    
    The kernel still uses the old table. The new table will be used at the next reboot or after you run partprobe(8) or kpartx(8).
    

  • リーブート
  • パーティション拡張

    # resize2fs /dev/mmcblk0p2
    

基本情報 †

• uname -a

  Linux jessie-rpi 3.18.7-v7+ #755 SMP PREEMPT Thu Feb 12 17:20:48 GMT 2015 armv7l GNU/Linux
  

• free

               total       used       free     shared    buffers     cached
  Mem:        949328     132992     816336      12248       8396      77424
  -/+ buffers/cache:      47172     902156
  Swap:            0          0          0
  

systemd-nspawn による軽量コンテナ試行 †

• systemd-nspawn とは
  • 拡張版chroot環境。cgroup機能を用いてホストとは独立した名前空間を持つLinux環境(軽量コンテナ)を構築できる。
• コンテナappの作成
  
  • /var/lib/container/下に作成するのがミソ
    

    # apt-get install debootstrap
    
    # debootstrap --arch=armhf jessie /var/lib/container/app
    
    以下のコマンドでコンテナに入る。
    # systemd-nspawn -D app
    
    #コンテナの中
    # apt-get install dbus sudo
    # adduser debian
    
    …省略…
    
    # gpasswd -a debian sudo
    # exit
    

• コンテナ起動

  # systemctl start systemd-nspawn@app.service
  
  ちなみに、ホスト起動時、コンテナを自動起動させる場合は、
  # systemctl enable systemd-nspawn@app.service
  

• 起動中コンテナの確認

  # machiectl
  MACHINE                          CONTAINER SERVICE
  app                              container nspawn
  

• コンテナ jessie のステータス確認

  # machinectl status app
  jessie
             Since: 火 2015-09-29 23:54:43 JST; 5min ago
            Leader: 14828 (systemd)
           Service: nspawn; class container
              Root: /var/lib/container/app
           Address: fe80::cee1:d5ff:fe17:b641
                    2408:10:c300:bb00:cee1:d5ff:fe17:b641
                    192.168.1.31
                OS: Debian GNU/Linux 8 (jessie)
              Unit: systemd-nspawn@app.service
                    tq14827 /usr/bin/systemd-nspawn --quiet --keep-unit --boot --link-journal=try-guest --directory=/var/lib/container/a...
                    tq14828 /lib/systemd/systemd
                    mqsystem.slice
                      tqcron.service
                      x mq14892 /usr/sbin/cron -f
                      tqsystemd-journald.service
                      x mq14842 /lib/systemd/systemd-journald
                      tqconsole-getty.service
                      x mq14899 /sbin/agetty --noclear --keep-baud console 115200 38400 9600 vt102
                      mqrsyslog.service
                        mq14894 /usr/sbin/rsyslogd -n
  

• コンテナへのログイン ( 抜けるにはCTRL+]]] )

  # machinectl login app
  

アプリ †

• install

  # apt-get install monit redis-server libredis-perl
  # apt-get install sqlite3 libdbd-sqlite3-perl libjson-xs-perl libdatetime-perl
  # apt-get install libwww-perl libdatetime-format-http-perl 
  # apt-get install libmojolicious-perl libapp-daemon-perl liblog-dispatch-filerotate-perl
  

• monit
  • /etc/monit/monitrc に以下を追加

    set httpd port 2812 and
       use address localhost
       allow admin:monit
    

  • /etc/nginx/conf.d/monit.conf

    server {
      listen 80;
      location /monit/ {
        rewrite ^/monit/(.*) /$1 break;
        proxy_pass http://localhost:2812;
        proxy_redirect  http://localhost:2812/monit  /monit/;
        proxy_set_header Host $host;
      }
    }
    

  • datafetch.plというスクリプトを作成しmonit監視対象にする場合の設定
    • /etc/monit/conf.d/datafetch.conf

      check process datafetch matching "detafetch"
        start program = "/home/pi/detafetch/bin/datafetch.pl -log" as uid pi and gid pi
        stop  program = "/usr/bin/pkill datafetch.pl" as uid pi and gid pi
        if 5 restarts within 5 cycles then unmonitor
      

• freetds
  • /etc/freetds/freetds.conf
  • [global]に以下を追加

    [global]
            port = 1433
            tds version = 8.0
            client charset = UTF-8