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この文書の現在のバージョンと選択したバージョンの差分を表示します。

--- mae3xx_tips:setup_mosquitto:start [2014/04/09 17:45]
admin
+++ mae3xx_tips:setup_mosquitto:start [2014/04/09 18:04] (現在)
admin
@@ ライン 1: / ライン 1: @@
+====== Mosquittoの導入 (MQTT) ======
+===== MQTTとは =====
+ここのページに非常にわかりやすいまとめがあります。\\
+[[http://tdoc.info/blog/2014/01/27/mqtt.html|そこはかとなく書くよん。 - MQTTについてのまとめ]]
+ここでは、[[http://mosquitto.org/|Mosquitto]] をセットアップする方法を紹介します。
+\\
+===== セットアップ =====
+==== PPAの追加 ====
+[[https://launchpad.net/~mosquitto-dev/+archive/mosquitto-ppa/|Mosquitto PPA]] を、add-apt-repository コマンドで追加します。
+<code>
+user1@plum:~$ sudo add-apt-repository ppa:mosquitto-dev/mosquitto-ppa
+[sudo] password for user1:
+ More info: https://launchpad.net/~mosquitto-dev/+archive/mosquitto-ppa
+Press [ENTER] to continue or ctrl-c to cancel adding it
+gpg: keyring `/tmp/tmpfmypnq/secring.gpg' created
+gpg: keyring `/tmp/tmpfmypnq/pubring.gpg' created
+gpg: requesting key 262C4500 from hkp server keyserver.ubuntu.com
+gpg: /tmp/tmpfmypnq/trustdb.gpg: trustdb created
+gpg: key 262C4500: public key "Launchpad mosquitto" imported
+gpg: Total number processed: 1
+gpg:               imported: 1  (RSA: 1)
+OK
+user1@plum:~$
+</code>
+\\
+==== パッケージリストの更新 ====
+"apt-get update" により、パッケージリストの更新を行います。
+<code>
+user1@plum:~$ sudo apt-get update
+Ign http://ppa.launchpad.net saucy InRelease
+Ign http://ports.ubuntu.com saucy InRelease
+Get:1 http://ppa.launchpad.net saucy Release.gpg [316 B]
+Ign http://ports.ubuntu.com saucy-updates InRelease
+Get:2 http://ppa.launchpad.net saucy Release [11.9 kB]
+Ign http://ports.ubuntu.com saucy-security InRelease
+Hit http://ports.ubuntu.com saucy Release.gpg
+Get:3 http://ports.ubuntu.com saucy-updates Release.gpg [933 B]
+Get:4 http://ppa.launchpad.net saucy/main armhf Packages [1328 B]
+Get:5 http://ports.ubuntu.com saucy-security Release.gpg [933 B]
+Hit http://ports.ubuntu.com saucy Release
+Get:6 http://ports.ubuntu.com saucy-updates Release [49.6 kB]
+Get:7 http://ports.ubuntu.com saucy-security Release [49.6 kB]
+Ign http://ppa.launchpad.net saucy/main Translation-en
+Hit http://ports.ubuntu.com saucy/main armhf Packages
+Hit http://ports.ubuntu.com saucy/restricted armhf Packages
+Hit http://ports.ubuntu.com saucy/universe armhf Packages
+Hit http://ports.ubuntu.com saucy/main Translation-en
+Hit http://ports.ubuntu.com saucy/restricted Translation-en
+Hit http://ports.ubuntu.com saucy/universe Translation-en
+Get:8 http://ports.ubuntu.com saucy-updates/main armhf Packages [219 kB]
+Get:9 http://ports.ubuntu.com saucy-updates/restricted armhf Packages [14 B]
+Get:10 http://ports.ubuntu.com saucy-updates/universe armhf Packages [149 kB]
+Get:11 http://ports.ubuntu.com saucy-updates/main Translation-en [106 kB]
+Hit http://ports.ubuntu.com saucy-updates/restricted Translation-en
+Hit http://ports.ubuntu.com saucy-updates/universe Translation-en
+Get:12 http://ports.ubuntu.com saucy-security/main armhf Packages [110 kB]
+Get:13 http://ports.ubuntu.com saucy-security/restricted armhf Packages [14 B]
+Get:14 http://ports.ubuntu.com saucy-security/universe armhf Packages [34.8 kB]
+Hit http://ports.ubuntu.com saucy-security/main Translation-en
+Hit http://ports.ubuntu.com saucy-security/restricted Translation-en
+Hit http://ports.ubuntu.com saucy-security/universe Translation-en
+Fetched 734 kB in 12s (61.1 kB/s)
+Reading package lists... Done
+user1@plum:~$
+</code>
+\\
+Mosquitto関係のパッケージを検索してみます。
+<code>
+user1@plum:~$ sudo apt-cache search mosquitto
+libmosquitto0 - MQTT version 3.1 client library
+libmosquitto0-dev - MQTT version 3.1 client library, development files
+libmosquittopp0 - MQTT version 3.1 client C++ library
+libmosquittopp0-dev - MQTT version 3.1 client C++ library, development files
+mosquitto - MQTT version 3.1 compatible message broker
+mosquitto-clients - Mosquitto command line MQTT clients
+python-mosquitto - MQTT version 3.1 Python client library
+python3-mosquitto - MQTT version 3.1 Python 3 client library
+libmosquitto-dev - MQTT version 3.1 client library, development files
+libmosquittopp-dev - MQTT version 3.1 client C++ library, development files
+user1@plum:~$
+</code>
+クライアント(ライブラリ/アプリケーション)、ブローカーサーバーなどが導入できることがわかります。
+\\
+==== クライアントの導入 ====
+mosquitto-clients を導入します。
+<code>
+user1@plum:~$ sudo apt-get install mosquitto-clients
+Reading package lists... Done
+Building dependency tree
+Reading state information... Done
+The following extra packages will be installed:
+  libmosquitto0
+The following NEW packages will be installed:
+  libmosquitto0 mosquitto-clients
+upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
+Need to get 30.6 kB of archives.
+After this operation, 147 kB of additional disk space will be used.
+Do you want to continue [Y/n]?
+Get:1 http://ports.ubuntu.com/ubuntu-ports/ saucy/universe libmosquitto0 armhf 0.15-2ubuntu1 [13.1 kB]
+Get:2 http://ports.ubuntu.com/ubuntu-ports/ saucy/universe mosquitto-clients armhf 0.15-2ubuntu1 [17.5 kB]
+Fetched 30.6 kB in 1s (25.6 kB/s)
+Selecting previously unselected package libmosquitto0.
+(Reading database ... 18538 files and directories currently installed.)
+Unpacking libmosquitto0 (from .../libmosquitto0_0.15-2ubuntu1_armhf.deb) ...
+Selecting previously unselected package mosquitto-clients.
+Unpacking mosquitto-clients (from .../mosquitto-clients_0.15-2ubuntu1_armhf.deb) ...
+Setting up libmosquitto0 (0.15-2ubuntu1) ...
+Setting up mosquitto-clients (0.15-2ubuntu1) ...
+Processing triggers for libc-bin ...
+localepurge: Disk space freed in /usr/share/locale: 0 KiB
+localepurge: Disk space freed in /usr/share/man: 0 KiB
+Total disk space freed by localepurge: 0 KiB
+user1@plum:~$
+</code>
+\\
+導入されたアプリケーションのファイルを確認してみます。
+<code>
+user1@plum:~$ sudo dpkg -L mosquitto-clients
+/.
+/usr
+/usr/bin
+/usr/bin/mosquitto_sub
+/usr/bin/mosquitto_pub
+/usr/share
+/usr/share/man
+/usr/share/man/man1
+/usr/share/man/man1/mosquitto_pub.1.gz
+/usr/share/man/man1/mosquitto_sub.1.gz
+/usr/share/doc
+/usr/share/doc/mosquitto-clients
+/usr/share/doc/mosquitto-clients/copyright
+/usr/share/doc/mosquitto-clients/changelog.Debian.gz
+user1@plum:~$
+</code>
+\\
+==== サーバーブローカーの導入 ====
+サーバーブローカーを導入します。
+<code>
+user1@plum:~$ sudo apt-get install mosquitto
+Reading package lists... Done
+Building dependency tree
+Reading state information... Done
+The following extra packages will be installed:
+  apparmor libapparmor-perl libapparmor1
+Suggested packages:
+  apparmor-profiles apparmor-docs apparmor-utils
+The following NEW packages will be installed:
+  apparmor libapparmor-perl libapparmor1 mosquitto
+upgraded, 4 newly installed, 0 to remove and 0 not upgraded.
+Need to get 438 kB of archives.
+After this operation, 1269 kB of additional disk space will be used.
+Do you want to continue [Y/n]?
+Get:1 http://ports.ubuntu.com/ubuntu-ports/ saucy-updates/main libapparmor1 armhf 2.8.0-0ubuntu31.1 [38.1 kB]
+Get:2 http://ports.ubuntu.com/ubuntu-ports/ saucy-updates/main libapparmor-perl armhf 2.8.0-0ubuntu31.1 [32.1 kB]
+Get:3 http://ports.ubuntu.com/ubuntu-ports/ saucy-updates/main apparmor armhf 2.8.0-0ubuntu31.1 [314 kB]
+Get:4 http://ports.ubuntu.com/ubuntu-ports/ saucy/universe mosquitto armhf 0.15-2ubuntu1 [54.1 kB]
+Fetched 438 kB in 3s (122 kB/s)
+Preconfiguring packages ...
+Selecting previously unselected package libapparmor1.
+(Reading database ... 18549 files and directories currently installed.)
+Unpacking libapparmor1 (from .../libapparmor1_2.8.0-0ubuntu31.1_armhf.deb) ...
+Selecting previously unselected package libapparmor-perl.
+Unpacking libapparmor-perl (from .../libapparmor-perl_2.8.0-0ubuntu31.1_armhf.deb) ...
+Selecting previously unselected package apparmor.
+Unpacking apparmor (from .../apparmor_2.8.0-0ubuntu31.1_armhf.deb) ...
+Selecting previously unselected package mosquitto.
+Unpacking mosquitto (from .../mosquitto_0.15-2ubuntu1_armhf.deb) ...
+Processing triggers for ureadahead ...
+Setting up libapparmor1 (2.8.0-0ubuntu31.1) ...
+Setting up libapparmor-perl (2.8.0-0ubuntu31.1) ...
+Setting up apparmor (2.8.0-0ubuntu31.1) ...
+Processing triggers for ureadahead ...
+Setting up mosquitto (0.15-2ubuntu1) ...
+mosquitto start/running, process 1774
+Processing triggers for libc-bin ...
+Processing triggers for ureadahead ...
+localepurge: Disk space freed in /usr/share/locale: 0 KiB
+localepurge: Disk space freed in /usr/share/man: 0 KiB
+Total disk space freed by localepurge: 0 KiB
+user1@plum:~$
+</code>
+\\
+サーバーブローカーを導入すると、自動でサービスとして起動します。
+<code>
+?        Ss     0:00 /usr/sbin/mosquitto -c /etc/mosquitto/mosquitto.conf
+</code>
+\\
+===== 実行例 =====
+早速、導入したホスト上で、PUB/SUB の実験をしてみます。
+ターミナルで、Subscribe するクライアントを立ち上げておきます。\\
+トピックは "hello" としておきます。
+<code>
+user1@plum:~$ mosquitto_sub -d -t hello
+Received CONNACK
+Received SUBACK
+Subscribed (mid: 1): 0
+</code>
+\\
+別のターミナルから、Subscribeされているトピック "hello" に対して、メッセージを Publish してみます。
+<code>
+user1@plum:~$ mosquitto_pub -d -t hello -m "Hello World"
+Received CONNACK
+Sending PUBLISH (d0, q0, r0, m1, 'hello', ... (11 bytes))
+user1@plum:~$
+</code>
+Subscribe している側にメッセージが送信されたのが確認できます。
+<code>
+user1@plum:~$ mosquitto_sub -d -t hello
+Received CONNACK
+Received SUBACK
+Subscribed (mid: 1): 0
+Received PUBLISH (d0, q0, r0, m0, 'hello', ... (11 bytes))
+Hello World
+</code>

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