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  31. <h1>xythobuz.de</h1>
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  33. <h2>Ultimate Notifier Script</h2>
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  36. <a href='ultimatenotifier.de.html'>de</a> | <a href='ultimatenotifier.html'>en</a>
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  40. <h1>Ultimate Notifier Script</h1>
  41. <p>Der Dienst <a href="http://ultimatenotifier.com/">Ultimate Notifier</a> erlaubt es relativ problemlos, zum Beispiel mittels curl Push-Notifications an ein iPhone zu senden. Darauf basierend können Shell Skripte geschrieben werden, welche regelmäßig als Cron-Job gestartet werden. So kann man sich zum Beispiel über eine geänderte Public IP informieren lassen. Dafür muss dieses Skript irgendwo gespeichert werden:</p>
  42. <pre class="sh_sh">
  43. #!/bin/sh
  44. ipfile=".currentip"
  45. service="ifconfig.me"
  46. user="username"
  47. pass="password"
  48. message="IP:"
  49. ip=`curl -s $service`
  50. touch $ipfile
  51. lastip=`cat $ipfile`
  52. if [ "$ip" != "$lastip" ]; then
  53. echo "New public IP. Sending notification!"
  54. curl -s "https://www.ultimatenotifier.com/items/User/send/${user}/message=${message}%20${ip}/password=${pass}"
  55. fi
  56. cp /dev/null $ipfile
  57. echo $ip > $ipfile
  58. </pre>
  59. <p>Es liest die aktuelle öffentliche IP mittels curl vom Dienst <a href="http://ifconfig.me">ifconfig.me</a> aus und vergleicht diese mit der zwischengespeicherten IP in einer Datei namens .currentip. Unterscheiden sich die IPs, wird eine Push Notification gesendet und die neue IP gespeichert.</p>
  60. <p>Mit dem Befehl</p>
  61. <pre>crontab -e</pre>
  62. <p>Kann ein Eintrag ins cronfile hinzugefügt werden, sodass das Skript regelmäßig gestartet wird. Ein Beispiel, für 30 Minuten:</p>
  63. <pre>*/30 * * * * /Users/anon/bin/ipnotify.sh</pre>
  64. <p>Der Code findet sich auch auf <a href="https://github.com/xythobuz/Snippets/blob/master/ipnotify.sh">GitHub</a>.</p>
  65. <p>Natürlich kann dieses Prinzip beliebig erweitert werden. Dieses Bash Skript wird auf meinem Server alle 5 Minuten von cron gestartet und berichtet über eventuelle Probleme.</p>
  66. <pre class="sh_sh">
  67. #!/bin/bash
  68. # Checks for Health of Server and sends notifications to iPhone in case of error
  69. # Checks for:
  70. # - HDD Temperature
  71. # - HDD Space
  72. # - CPU Usage
  73. # Sends a notification via UltimateNotifier
  74. # Depends on bash, wget, hddtemp, grep, awk, sed, ps, sort and head.
  75. # ------------------------------
  76. # ------------------------------
  77. # Your UltimateNotifier Password
  78. UNUsername="YourUserName"
  79. UNPassword="YourPassWord"
  80. # Check for free space
  81. hddMountPoint="bay" # greps for this in mounted hdds
  82. maxPercentFull=75 # minimum percentage to send notification
  83. # Check for CPU Usage of processes
  84. maxCpuUsage=750 # Is in tenths of a percent (420 => 42%)
  85. # Checks hdd temperature
  86. # Depends on hddtemp tool
  87. hddDevice="/dev/sda"
  88. maxHddTemp=50
  89. # ------------------------------
  90. # ------------------------------
  91. # Set $message to your Message and then call this...
  92. function sendNotification {
  93. wget "https://www.ultimatenotifier.com/items/User/send/${UNUsername}/message=${message}/password=${UNPassword}" -O /dev/null -q
  94. echo "$message"
  95. }
  96. # ------------------------------
  97. # ------------------------------
  98. # Check for hdd temperature
  99. hddTemp=`/usr/sbin/hddtemp ${hddDevice} | awk '{print $4}' | awk -F '°' '{print $1}'`
  100. if [ $hddTemp -gt $maxHddTemp ]; then
  101. message="Marvin's HDD has reached ${hddTemp}°C!"
  102. sendNotification
  103. fi
  104. # Check for free space on hdd
  105. spaceUsed=`df -h | grep ${hddMountPoint} | awk '{print $5}' | sed 's/%//'`
  106. if [ $spaceUsed -gt $maxPercentFull ]; then
  107. message="Marvin's HDD is ${spaceUsed}% full!"
  108. sendNotification
  109. fi
  110. # Check for most cpu intensive process, report if usage too high
  111. processName=`ps -e -o cp,args | sed -e 's/^[ \\t]*//' | awk -F " " '{print $1, $2}' | sed -e '1d' | sort -rn | head -1 | awk '{print $2}'`
  112. processUsage=`ps -e -o cp,args | sed -e 's/^[ \\t]*//' | awk -F " " '{print $1, $2}' | sed -e '1d' | sort -rn | head -1 | awk '{print $1}'`
  113. if [ $processUsage -gt $maxCpuUsage ]; then
  114. processUsage=`echo "${processUsage} / 10.0" | bc -q`
  115. message="${processName} needs ${processUsage}% CPU!"
  116. sendNotification
  117. fi
  118. </pre>
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