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date Thu Sep 23 18:21:11 2021 +0200 (2021-09-23)
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bsw@1657 1 <html><head><title>LiquidFeedback Installation Instructions</title></head><body>
jbe@1046 2 <h1>LiquidFeedback Installation Instructions</h1>
jbe@1046 3
jbe@1046 4 <p>This document gives a short outline about the necessary steps to setup a
jbe@1046 5 LiquidFeedback system.</p>
jbe@1046 6
jbe@1046 7 <h2>1. Install necessary dependencies</h2>
jbe@1046 8
jbe@1046 9 <p>If you're using a Debian system, make sure that the following packages are
jbe@1046 10 installed:</p>
jbe@1046 11
bsw@1045 12 <ul>
jbe@1156 13 <li>build-essential</li>
bsw@1657 14 <li>postgresql</li>
bsw@1657 15 <li>postgresql-server-dev-12</li>
jbe@1308 16 <li>libbsd-dev</li>
bsw@1657 17 <li>lua5.3</li>
bsw@1657 18 <li>liblua5.3-dev</li>
bsw@1657 19 <li>mercurial</li>
bsw@1657 20 <li>bmake</li>
bsw@1657 21 <li>lsb-release</li>
bsw@1045 22 <li>imagemagick</li>
bsw@1045 23 </ul>
jbe@1046 24
jbe@1046 25 <p>If you're using any other Linux distribution or BSD system, install the
jbe@1046 26 necessary software components accordingly.</p>
jbe@1046 27
jbe@1046 28 <h2>2. Ensure that the user account of your webserver has access to the database</h2>
jbe@1046 29
bsw@1657 30 <p>The useraccount of Moonbridge server process needs to have access to your
bsw@1657 31 PostgreSQL installation. This is done by executing PostgreSQL's shell command
bsw@1657 32 <code>createuser</code> as database superuser (usually <code>pgsql</code>, or <code>postgres</code> for
bsw@1657 33 Debian installations):</p>
jbe@1046 34
bsw@1657 35 <pre><code>su - postgres -s $SHELL
jbe@1191 36 createuser --no-superuser --createdb --no-createrole www-data
jbe@1046 37 exit
jbe@1046 38 </code></pre>
jbe@1046 39
jbe@1046 40 <h2>3. Install and configure LiquidFeedback-Core</h2>
jbe@1046 41
jbe@1046 42 <p>We recommend to create the database with the same user as your webserver
jbe@1046 43 (usually <code>www-data</code>) to avoid having to setup database privileges.</p>
jbe@1046 44
bsw@1657 45 <p>The example below installs the database as <code>www-data</code> and stores the three
bsw@1657 46 executables <code>lf_update</code>, <code>lf_update_issue_order</code> and
bsw@1657 47 <code>lf_update_suggestion_order</code> in the directory <code>/opt/liquid_feedback_core/</code>:</p>
jbe@1046 48
bsw@1045 49 <pre><code># Download and unpack LiquidFeedback-Core
bsw@1045 50 # from http://www.public-software-group.org/pub/projects/liquid_feedback/backend/
bsw@1045 51 make
bsw@1045 52 mkdir /opt/liquid_feedback_core
jbe@1196 53 cp core.sql lf_update lf_update_issue_order lf_update_suggestion_order /opt/liquid_feedback_core
jbe@1191 54 su www-data -s $SHELL
bsw@1045 55 cd /opt/liquid_feedback_core
bsw@1045 56 createdb liquid_feedback
jbe@1046 57 psql -v ON_ERROR_STOP=1 -f core.sql liquid_feedback
jbe@1046 58 </code></pre>
jbe@1046 59
bsw@1045 60 <p>A simple configuration may look as follows:</p>
jbe@1046 61
bsw@1045 62 <pre><code>psql liquid_feedback
bsw@1045 63
jbe@1046 64 INSERT INTO system_setting (member_ttl) VALUES ('1 year');
jbe@1046 65 INSERT INTO contingent (polling, time_frame, text_entry_limit, initiative_limit) VALUES (false, '1 hour', 20, 6);
jbe@1046 66 INSERT INTO contingent (polling, time_frame, text_entry_limit, initiative_limit) VALUES (false, '1 day', 80, 12);
jbe@1046 67 INSERT INTO contingent (polling, time_frame, text_entry_limit, initiative_limit) VALUES (true, '1 hour', 200, 60);
jbe@1046 68 INSERT INTO contingent (polling, time_frame, text_entry_limit, initiative_limit) VALUES (true, '1 day', 800, 120);
jbe@1046 69 </code></pre>
jbe@1046 70
bsw@1657 71 <p>Create an invite code for an admin user:</p>
jbe@1046 72
bsw@1657 73 <pre><code>INSERT INTO member (invite_code, admin) VALUES ('sesam', true);
jbe@1046 74 </code></pre>
jbe@1046 75
bsw@1045 76 <p>Exit the <code>psql</code> interface by typing:</p>
jbe@1046 77
jbe@1046 78 <pre><code>\q
jbe@1046 79 </code></pre>
jbe@1046 80
bsw@1045 81 <p>And don't forget to quit the <code>www-data</code> shell:</p>
jbe@1046 82
jbe@1046 83 <pre><code>exit
jbe@1046 84 </code></pre>
jbe@1046 85
jbe@1244 86 <h2>4. Install Moonbridge</h2>
jbe@1046 87
jbe@1156 88 <pre><code># Download and unpack Moonbridge
jbe@1156 89 # from http://www.public-software-group.org/pub/projects/moonbridge/
jbe@1156 90 pmake MOONBR_LUA_PATH=/opt/moonbridge/?.lua
jbe@1156 91 mkdir /opt/moonbridge
jbe@1156 92 cp moonbridge /opt/moonbridge/
jbe@1156 93 cp moonbridge_http.lua /opt/moonbridge/
jbe@1156 94 </code></pre>
jbe@1156 95
jbe@1156 96 <h2>5. Install WebMCP</h2>
jbe@1156 97
bsw@1045 98 <pre><code># Download and unpack WebMCP
bsw@1045 99 # from http://www.public-software-group.org/pub/projects/webmcp/
bsw@1045 100 make
bsw@1045 101 mkdir /opt/webmcp
jbe@1046 102 cp -RL framework/* /opt/webmcp/
jbe@1046 103 </code></pre>
bsw@1045 104
jbe@1156 105 <h2>6. Install the LiquidFeedback-Frontend</h2>
bsw@1045 106
bsw@1045 107 <p>Unpack source tree into appropriate directory, e.g. <code>/opt/liquid_feedback_frontend</code>:</p>
jbe@1046 108
bsw@1045 109 <pre><code># Download LiquidFeedback-Frontend
bsw@1045 110 # from http://www.public-software-group.org/pub/projects/liquid_feedback/frontend/
jbe@1046 111 mv liquid_feedback_frontend-vX.X.X /opt/liquid_feedback_frontend
jbe@1046 112 </code></pre>
jbe@1046 113
bsw@1045 114 <p>Make <code>tmp/</code> directory of LiquidFeedback-Frontend writable for webserver:</p>
jbe@1046 115
jbe@1046 116 <pre><code>chown www-data /opt/liquid_feedback_frontend/tmp
jbe@1046 117 </code></pre>
jbe@1046 118
jbe@1156 119 <h2>7. Configure mail system</h2>
jbe@1046 120
bsw@1657 121 <p>It may be necessary to configure your server's mail system.</p>
jbe@1046 122
jbe@1244 123 <h2>8. Configure the LiquidFeedback-Frontend</h2>
jbe@1046 124
bsw@1045 125 <pre><code>cd /opt/liquid_feedback_frontend/config
bsw@1045 126 cp example.lua myconfig.lua
jbe@1046 127 # edit myconfig.lua according to your needs
jbe@1046 128 </code></pre>
jbe@1046 129
jbe@1244 130 <h2>9. Setup regular execution of <code>lf_update</code> and related commands </h2>
jbe@1046 131
jbe@1051 132 <p>The executables <code>lf_update</code>, <code>lf_update_issue_order</code>, and
jbe@1051 133 <code>lf_update_suggestion_order</code> must be executed regularly. This may be achieved
bsw@1657 134 by creating a file named <code>/opt/liquid_feedback_core/lf_update.sh</code> with the
jbe@1051 135 following contents:</p>
jbe@1046 136
bsw@1045 137 <pre><code>#!/bin/sh
bsw@1045 138
bsw@1045 139 while true; do
bsw@1661 140 nice /opt/liquid_feedback_core/lf_update dbname=liquid_feedback 2&gt;&amp;1 | logger -t "lf_core"
bsw@1661 141 nice /opt/liquid_feedback_core/lf_update_issue_order dbname=liquid_feedback 2&gt;&amp;1 | logger -t "lf_core"
bsw@1661 142 nice /opt/liquid_feedback_core/lf_update_suggestion_order dbname=liquid_feedback 2&gt;&amp;1 | logger -t "lf_core"
bsw@1045 143 sleep 5
jbe@1046 144 done
jbe@1046 145 </code></pre>
jbe@1046 146
bsw@1045 147 <p>This file must be marked as executable:</p>
jbe@1046 148
jbe@1046 149 <pre><code>chmod +x /opt/liquid_feedback_core/lf_updated
jbe@1046 150 </code></pre>
jbe@1046 151
bsw@1657 152 <p>And this file should be started automatically at system boot. On systems with
bsw@1657 153 systemd, create a file named <code>/etc/systemd/system/liquid_feedback_core.service</code>:</p>
bsw@1657 154
bsw@1657 155 <pre><code>[Unit]
bsw@1657 156 Description=LiquidFeedback Core update
bsw@1657 157
bsw@1657 158 [Service]
bsw@1661 159 User=www-data
bsw@1657 160 ExecStart=/opt/liquid_feedback_core/lf_update.sh
jbe@1046 161
bsw@1657 162 [Install]
bsw@1657 163 WantedBy=multi-user.target
bsw@1657 164 </code></pre>
bsw@1657 165
bsw@1673 166 <p>Enable and start the service:</p>
bsw@1673 167
bsw@1673 168 <pre><code>systemctl start liquid_feedback_core
bsw@1673 169 systemctl enable liquid_feedback_core
bsw@1673 170 </code></pre>
bsw@1657 171
bsw@1657 172 <h2>10. Start the frontend</h2>
jbe@1046 173
jbe@1244 174 <p>After <code>lf_update</code> has been executed at least once, you should be able to use
jbe@1244 175 your LiquidFeedback system.</p>
jbe@1046 176
bsw@1674 177 <p>Create a file named <code>/opt/liquid_feedback_frontend/run.sh</code>:</p>
bsw@1657 178
bsw@1657 179 <pre><code>#/bin/bash
bsw@1657 180
bsw@1661 181 /opt/moonbridge/moonbridge /opt/webmcp/bin/mcp.lua /opt/webmcp/ /opt/liquid_feedback_frontend/ main myconfig 2&gt;&amp;1 | logger -t "lf_frontend"
bsw@1657 182 </code></pre>
bsw@1657 183
bsw@1657 184 <p>Make it executable:</p>
bsw@1657 185
bsw@1657 186 <pre><code>chmod +x /opt/liquid_feedback_frontend/run.sh
bsw@1657 187 </code></pre>
bsw@1657 188
bsw@1657 189 <p>On systemd based systems, create a file named
bsw@1657 190 <code>/etc/systemd/system/liquid_feedback_frontend.service</code>:</p>
jbe@1156 191
bsw@1657 192 <pre><code>[Unit]
bsw@1657 193 Description=LiquidFeedback Frontend
bsw@1657 194
bsw@1657 195 [Service]
bsw@1661 196 User=www-data
bsw@1657 197 ExecStart=/opt/liquid_feedback_frontend/run.sh
bsw@1657 198
bsw@1657 199 [Install]
bsw@1657 200 WantedBy=multi-user.target
jbe@1156 201 </code></pre>
jbe@1162 202
bsw@1673 203 <p>Enable and start the service:</p>
bsw@1673 204
bsw@1673 205 <pre><code>systemctl start liquid_feedback_frontend
bsw@1673 206 systemctl enable liquid_feedback_frontend
bsw@1673 207 </code></pre>
bsw@1657 208
jbe@1162 209 <p>In the latter case, the Moonbridge server will open a TCP port according to
jbe@1162 210 your configuration. Directly accessing this TCP port through your webbrowser
jbe@1162 211 is helpful for development purposes. For real-life deployment, however, it is
jbe@1162 212 recommended to further proxy the application (e.g. using nginx). The proxy can
jbe@1190 213 also add HTTPS and/or HTTP/2 support (which is not supported by Moonbridge
jbe@1190 214 itself).</p>
bsw@1657 215 </body></html>

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