Alexander Schäferdiek
0ee7b03df8
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83 lines
2.2 KiB
Bash
Executable file
83 lines
2.2 KiB
Bash
Executable file
#!/usr/bin/env bash
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# usage
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usage() {
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USAGE=$(cat <<EOF
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Usage: disk_space_alert [CONFIG_FILE (absolute path)]
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If no CONFIG_FILE is given, HOME/.disk_space_alert.conf or /etc/disk_space_alert.conf is used. This fallback option
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has to exist or the script will exit.
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Configuration can be done in any file and any pre-defined variable can be overwritten.
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The following are at least required for the script to work:
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- DISK_SPACE_ALERT_MAIL_ADDRESS="" // mail.rc has to be configured
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The following are optional or have reasonable defaults:
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- DISK_SPACE_ALERT_THRESHOLD=93 // in percent
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- DISK_SPACE_ALERT_MOUNTPOINTS=("/") // array of mountpoints
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You can copy this script to '/usr/local/bin' and use create a custom CONFIG_FILE as user. Examples can be found in '/usr/share/doc/<scriptname>'.
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EOF
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)
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echo "$USAGE";
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}
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set -e;
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HOSTNAME=$(hostname)
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DISK_SPACE_ALERT_MAIL_ADDRESS="";
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DISK_SPACE_ALERT_THRESHOLD=93
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DISK_SPACE_ALERT_MOUNTPOINTS=("/")
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# check for config file
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apply_config() {
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local config=$1;
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if [[ ! -f "$config" ]]; then
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echo "No config file specified";
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echo "";
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usage;
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exit 1;
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fi
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set -a;
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# shellcheck disable=SC1090
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source "$config";
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set +a;
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}
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source_config() {
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local config=$1;
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local configFallback=$2;
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local configGlobalFallback=$3;
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if [[ -f "$config" ]]; then
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apply_config "$config";
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return;
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fi
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if [[ -f "$configFallback" ]]; then
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apply_config "$configFallback";
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return;
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fi
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if [[ -f "$configGlobalFallback" ]]; then
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apply_config "$configGlobalFallback";
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return;
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fi
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}
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source_config "$1" "$HOME/.disk_space_alert.conf" "/etc/disk_space_alert.conf"
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for point in "${DISK_SPACE_ALERT_MOUNTPOINTS[@]}"
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do
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CURRENT=$(df "$point" | grep "$point" | awk '{ print $5}' | sed 's/%//g')
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CURRENT_SPACE=$(df "$point" | grep "$point" | awk '{ print $5}' | sed 's/%//g')
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CURRENT_INODES=$(df -i "$point" | grep "$point" | awk '{ print $5}' | sed 's/%//g')
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if [ "$CURRENT" -gt "$DISK_SPACE_ALERT_THRESHOLD" ] ; then
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mailx -s "[disk $HOSTNAME] $point" "$DISK_SPACE_ALERT_MAIL_ADDRESS" << EOF
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Your $point partition remaining free space is critically low. Used space: $CURRENT_SPACE%. Used inodes: $CURRENT_INODES%.
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EOF
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fi
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done
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