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vms:bittorrent [2017/05/30 03:46] admin [Transmission] |
vms:bittorrent [2017/06/02 04:36] (current) admin [Transmission] |
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| We'll start with the installation of a **Transmission** server, based on a [[vms:debian|Debian template]]. | We'll start with the installation of a **Transmission** server, based on a [[vms:debian|Debian template]]. | ||
| - | <Code:bash> | + | === Installation === |
| + | |||
| + | <Code:json> | ||
| > apt-get install transmission-daemon | > apt-get install transmission-daemon | ||
| + | </Code> | ||
| + | |||
| + | This will start the transmission daemon process (service), it will be running under a new user created at install time: 'debian-transmission'. Note that, at the same time, a directory belonging to this same user was also created: '/var/lib/transmission-daemon'. It contains a 'downloads' folder and a symlink to the configuration directory. | ||
| + | |||
| + | We'll create a "seeding" directory and edit the configuration file, for this we need to stop the service first: | ||
| + | <Code:bash> | ||
| + | > mkdir /var/lib/transmission-daemon/seeding | ||
| + | > chown debian-transmission:debian-transmission /var/lib/transmission-daemon/seeding | ||
| + | > service transmission-daemon stop | ||
| + | > nano /var/lib/transmission-daemon/info/settings.json | ||
| + | </Code> | ||
| + | |||
| + | Refering to [[https://ctrl.blog/entry/how-to-server-seeding-dht-torrents]], here are the important settings to set: | ||
| + | |||
| + | <Code:bash> | ||
| + | "download-dir": "/var/lib/transmission/seeding", | ||
| + | "incomplete-dir": "/var/lib/transmission/seeding", | ||
| + | "dht-enabled": true, | ||
| + | "lpd-enabled": true, | ||
| + | "pex-enabled": true, | ||
| + | "peer-limit-per-torrent": 10, | ||
| + | "port-forwarding-enabled": false, | ||
| + | "queue-stalled-enabled": false, | ||
| + | "speed-limit-down": 50, | ||
| + | "speed-limit-down-enabled": true, | ||
| + | "speed-limit-up": 50, | ||
| + | "speed-limit-up-enabled": true, | ||
| + | "upload-slots-per-torrent": 5, | ||
| + | "user-has-given-informed-consent": true, | ||
| + | "watch-dir": "/var/lib/transmission/seeding", | ||
| + | "watch-dir-enabled": true, | ||
| + | </Code> | ||
| + | |||
| + | For a complete description of all options: [[https://web.archive.org/web/20160428165927/https://trac.transmissionbt.com/wiki/EditConfigFiles]] | ||
| + | |||
| + | For detailed instructions on how to use Transmission: [[https://help.ubuntu.com/community/TransmissionHowTo]] | ||
| + | |||
| + | === System Configuration === | ||
| + | |||
| + | To avoid Transmission eating up all the system's resources, edit ''/lib/systemd/system/transmission-daemon.service'': | ||
| + | |||
| + | <Code> | ||
| + | > nano /lib/systemd/system/transmission-daemon.service | ||
| + | ADD @ end of [Service] section | ||
| + | [Service] | ||
| + | ... | ||
| + | Nice=16 | ||
| + | IOSchedulingClass=idle | ||
| + | CPUSchedulingPolicy=idle | ||
| + | MemoryMax=25M | ||
| + | MemoryHigh=35M | ||
| + | ProtectSystem=true | ||
| + | |||
| + | > systemctl daemon-reload | ||
| + | </Code> | ||
| + | |||
| + | Note that we reload daemons for our changes to take effect. | ||
| + | |||
| + | === UDP socket buffers === | ||
| + | |||
| + | Setting ''"message-level": 3,'' in ''/var/lib/transmission-daemon/info/settings.json'', then monitoring ''/var/log/syslog'', or better ''/var/log/daemon.log'' will show: | ||
| + | <Code> | ||
| + | Jun 2 04:18:24 transmission-20 transmission-daemon[4243]: [2017-06-02 04:18:24.532 CEST] UDP Failed to set receive buffer: requested 4194304, got 425984 (tr-udp.c:78) | ||
| + | Jun 2 04:18:24 transmission-20 transmission-daemon[4243]: [2017-06-02 04:18:24.534 CEST] UDP Failed to set send buffer: requested 1048576, got 425984 (tr-udp.c:89) | ||
| + | </Code> | ||
| + | |||
| + | It seems Transmission is willing to get a 4MB receive buffer and a 1MB send buffer, while only 256K are available. We'll fix that using the following commands: | ||
| + | <Code> | ||
| + | > echo 'net.core.rmem_max = 16777216' >> /etc/sysctl.conf | ||
| + | > echo 'net.core.wmem_max = 4194304' >> /etc/sysctl.conf | ||
| + | > sysctl -p | ||
| + | </Code> | ||
| + | |||
| + | For production servers with hundreds of connections 16MB receive and 4MB send buffers are recommended [[https://trac.transmissionbt.com/ticket/4321| read more here...]] | ||
| + | ===== mitorrent ===== | ||
| + | [[https://github.com/da2x/mitorrent]] | ||
| + | |||
| + | First we must follow [[vms:python:dev|this installation guide]] to setup an appropriate python environment, we also need to have 'git' installed, so we can clone the GitHub repo. | ||
| + | |||
| + | === Install=== | ||
| + | <Code:bash> | ||
| + | > apt-get install git-core | ||
| + | > su py3 | ||
| + | > cd $HOME | ||
| + | > git clone https://github.com/da2x/mitorrent.git | ||
| + | > cd mitorrent | ||
| + | > mkvirtualenv mitorrent | ||
| + | > chmod +x mitorrent-runner.py | ||
| + | </Code> | ||
| + | |||
| + | ===Usage=== | ||
| + | <Code> | ||
| + | > su py3 | ||
| + | > cd $HOME/mitorrent | ||
| + | > workon mitorrent | ||
| + | > ./mitorrent-runner.py path/to/original/file > path/to/torrent/file.torrent | ||
| </Code> | </Code> | ||
