76 lines
1.9 KiB
Bash
Executable file
76 lines
1.9 KiB
Bash
Executable file
#!/usr/bin/env bash
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# usage
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usage() {
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USAGE=$(cat <<EOF
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Usage: disk_space_alert
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Checks available diskspace for configured **mounts** and sends out a mail if certain limits are reached. Please see man disk_space_alert.
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EOF
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)
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echo "$USAGE";
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}
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set -e;
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# 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 configFallback=$1;
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local configGlobalFallback=$2;
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if [[ -f "$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 "$configGlobalFallback";
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return;
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fi
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}
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check_required() {
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type hostname &> /dev/null || { echo "Requiring 'hostname' but it's not installed"; exit 1; }
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type mailx &> /dev/null || { echo "Requiring 'mailx' but it's not installed"; exit 1; }
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type df &> /dev/null || { echo "Requiring 'df' but it's not installed"; exit 1; }
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}
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# apply defaults
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DISK_SPACE_ALERT_MAIL_ADDRESS="";
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DISK_SPACE_ALERT_THRESHOLD=93
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DISK_SPACE_ALERT_MOUNTPOINTS=("/")
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source_config "$HOME/.disk_space_alert.conf" "/etc/disk_space_alert.conf"
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check_required
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# do not touch below
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HOSTNAME=$(hostname)
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for point in "${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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