| 1 | <?xml version='1.0' encoding='UTF-8'?>
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| 2 | <!DOCTYPE topic PUBLIC "-//OASIS//DTD DITA Topic//EN" "topic.dtd">
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| 3 | <topic xml:lang="en-us" id="vboxwatchdog-linux">
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| 4 | <title>Linux: Starting the Watchdog Service With init</title>
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| 5 |
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| 6 | <body>
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| 7 | <p>
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| 8 | On Linux, the watchdog service can be automatically started
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| 9 | during host boot by adding appropriate parameters to the file
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| 10 | <filepath>/etc/default/virtualbox</filepath>. There is one
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| 11 | mandatory parameter, <codeph>VBOXWATCHDOG_USER</codeph>, which
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| 12 | must be set to the user which will later start the VMs. For
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| 13 | backward compatibility you can also specify
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| 14 | <codeph>VBOXBALLOONCTRL_USER</codeph>.
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| 15 | </p>
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| 16 | <p>
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| 17 | The parameters in the following table all start with the
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| 18 | <codeph>VBOXWATCHDOG_</codeph> prefix string. For example:
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| 19 | <codeph>VBOXWATCHDOG_BALLOON_INTERVAL</codeph> and
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| 20 | <codeph>VBOXWATCHDOG_LOGSIZE</codeph>. Legacy parameters such
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| 21 | as <codeph>VBOXBALLOONCTRL_INTERVAL</codeph> can still be
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| 22 | used.
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| 23 | </p>
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| 24 | <table id="table-vboxwatchdog-config-params">
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| 25 | <title>Oracle VM VirtualBox Watchdog Configuration Parameters</title>
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| 26 | <tgroup cols="3">
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| 27 | <thead>
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| 28 | <row>
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| 29 | <entry>
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| 30 | <p>
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| 31 | <b outputclass="bold">Parameter</b>
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| 32 | </p>
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| 33 | </entry>
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| 34 | <entry>
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| 35 | <p>
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| 36 | <b outputclass="bold">Description</b>
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| 37 | </p>
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| 38 | </entry>
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| 39 | <entry>
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| 40 | <p>
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| 41 | <b outputclass="bold">Default</b>
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| 42 | </p>
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| 43 | </entry>
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| 44 | </row>
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| 45 | </thead>
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| 46 | <tbody>
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| 47 | <row>
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| 48 | <entry>
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| 49 | <p>
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| 50 | <codeph>USER</codeph>
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| 51 | </p>
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| 52 | </entry>
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| 53 | <entry>
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| 54 | <p>
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| 55 | The user which the watchdog service runs as
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| 56 | </p>
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| 57 | </entry>
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| 58 | <entry>
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| 59 | <p/>
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| 60 | </entry>
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| 61 | </row>
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| 62 | <row>
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| 63 | <entry>
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| 64 | <p>
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| 65 | <codeph>ROTATE</codeph>
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| 66 | </p>
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| 67 | </entry>
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| 68 | <entry>
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| 69 | <p>
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| 70 | Number of log files, 0 disables log rotation
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| 71 | </p>
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| 72 | </entry>
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| 73 | <entry>
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| 74 | <p>
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| 75 | 10
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| 76 | </p>
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| 77 | </entry>
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| 78 | </row>
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| 79 | <row>
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| 80 | <entry>
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| 81 | <p>
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| 82 | <codeph>LOGSIZE</codeph>
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| 83 | </p>
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| 84 | </entry>
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| 85 | <entry>
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| 86 | <p>
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| 87 | Maximum log file size to trigger rotation, in bytes
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| 88 | </p>
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| 89 | </entry>
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| 90 | <entry>
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| 91 | <p>
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| 92 | 1MB
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| 93 | </p>
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| 94 | </entry>
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| 95 | </row>
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| 96 | <row>
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| 97 | <entry>
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| 98 | <p>
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| 99 | <codeph>LOGINTERVAL</codeph>
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| 100 | </p>
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| 101 | </entry>
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| 102 | <entry>
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| 103 | <p>
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| 104 | Maximum time interval to trigger log rotation, in
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| 105 | seconds
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| 106 | </p>
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| 107 | </entry>
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| 108 | <entry>
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| 109 | <p>
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| 110 | 1 day
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| 111 | </p>
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| 112 | </entry>
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| 113 | </row>
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| 114 | <row>
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| 115 | <entry>
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| 116 | <p>
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| 117 | <codeph>BALLOON_INTERVAL</codeph>
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| 118 | </p>
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| 119 | </entry>
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| 120 | <entry>
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| 121 | <p>
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| 122 | Interval for checking the balloon size, in
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| 123 | milliseconds
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| 124 | </p>
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| 125 | </entry>
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| 126 | <entry>
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| 127 | <p>
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| 128 | 30000
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| 129 | </p>
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| 130 | </entry>
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| 131 | </row>
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| 132 | <row>
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| 133 | <entry>
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| 134 | <p>
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| 135 | <codeph>BALLOON_INCREMENT</codeph>
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| 136 | </p>
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| 137 | </entry>
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| 138 | <entry>
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| 139 | <p>
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| 140 | Balloon size increment, in megabytes
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| 141 | </p>
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| 142 | </entry>
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| 143 | <entry>
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| 144 | <p>
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| 145 | 256
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| 146 | </p>
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| 147 | </entry>
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| 148 | </row>
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| 149 | <row>
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| 150 | <entry>
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| 151 | <p>
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| 152 | <codeph>BALLOON_DECREMENT</codeph>
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| 153 | </p>
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| 154 | </entry>
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| 155 | <entry>
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| 156 | <p>
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| 157 | Balloon size decrement, in megabytes
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| 158 | </p>
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| 159 | </entry>
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| 160 | <entry>
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| 161 | <p>
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| 162 | 128
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| 163 | </p>
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| 164 | </entry>
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| 165 | </row>
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| 166 | <row>
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| 167 | <entry>
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| 168 | <p>
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| 169 | <codeph>BALLOON_LOWERLIMIT</codeph>
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| 170 | </p>
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| 171 | </entry>
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| 172 | <entry>
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| 173 | <p>
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| 174 | Balloon size lower limit, in megabytes
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| 175 | </p>
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| 176 | </entry>
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| 177 | <entry>
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| 178 | <p>
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| 179 | 64
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| 180 | </p>
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| 181 | </entry>
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| 182 | </row>
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| 183 | <row>
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| 184 | <entry>
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| 185 | <p>
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| 186 | <codeph>BALLOON_SAFETYMARGIN</codeph>
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| 187 | </p>
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| 188 | </entry>
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| 189 | <entry>
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| 190 | <p>
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| 191 | Free memory required for decreasing the balloon size,
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| 192 | in megabytes
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| 193 | </p>
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| 194 | </entry>
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| 195 | <entry>
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| 196 | <p>
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| 197 | 1024
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| 198 | </p>
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| 199 | </entry>
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| 200 | </row>
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| 201 | </tbody>
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| 202 | </tgroup>
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| 203 | </table>
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| 204 | </body>
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| 205 |
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| 206 | </topic>
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