renamed a bunch of files
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b3e12fa198
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#!/bin/bash
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# this will take read-only btrfs snapshots and make it available in /srv/snapshots
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# Information
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NAME="btrfs-snapshots.sh"
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VERSION="0.2.0"
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AUTHOR="david@socialnerds.org"
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LICENSE="MIT"
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DESCRIPTION="$NAME (v$VERSION) takes snapshots of BTRFS volumes. It is written by $AUTHOR and published unter the $LICENSE license."
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# variables
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SUBVOLUMES="/"
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DESTINATION_ROOT=/srv/snapshots
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TIMESTAMP=$(date +%Y%m%d%H%M) #add %S if you want sub-minute snapshots
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PREFIX="snapshot-"
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NAME="$PREFIX$TIMESTAMP"
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MAX_SNAPSHOTS=28 #how many snapshots should be kept?
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# preflight checks
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if [ $(whoami) != "root" ]; then
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echo "error: you need to be root"
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exit 1
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fi
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# take the snapshots
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for SUBVOLUME in $SUBVOLUMES; do
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if [ -z ${SUBVOLUME#/} ]; then
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SNAPSHOT_PATH="$DESTINATION_ROOT"
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else
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PATH="$DESTINATION_ROOT/${SUBVOLUME#/}"
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fi
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if [ ! -d $SNAPSHOT_PATH ]; then
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echo "warning: snapshot path ($SNAPSHOT_PATH) does not yet exist. creating."
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mkdir -p $SNAPSHOT_PATH
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fi
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if [ -d $SNAPSHOT_PATH/$NAME ]; then
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echo "warning: snapshots with same name already exists. skipping."
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else
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#TODO: handle failed snapshots and failed link creations
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btrfs -q subvolume snapshot -r $SUBVOLUME $SNAPSHOT_PATH/$NAME
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if [ -h $SNAPSHOT_PATH/latest ]; then
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rm $SNAPSHOT_PATH/latest
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fi
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ln -sf $SNAPSHOT_PATH/$NAME $SNAPSHOT_PATH/latest
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fi
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done
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# prune old snapshots
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SNAPSHOTS=$(ls -r $SNAPSHOT_PATH | grep $PREFIX)
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i=0
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for SNAPSHOT in $SNAPSHOTS; do
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if [ $i -ge $MAX_SNAPSHOTS ]; then
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#TODO: handle failed snapshot deletions
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btrfs -q subvolume delete $SNAPSHOT_PATH/$SNAPSHOT
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fi
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i=$((i+1))
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done
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# end script successfully
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exit 0
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@ -0,0 +1,74 @@
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#!/bin/sh
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# simple script to clone a virtual machine (vmware)
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# to another datastore/folder.
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# usage: ./clone-vm.sh <source path> <destination path>
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# source path must be a directory and contain a virtual machine (at least a single .vmdk file)
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# destination path must a directory, preexist and be empty (to avoid overwriting another machine)
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# sources:
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# https://serverfault.com/questions/372526/move-vmware-esxi-vm-to-new-datastore-preserve-thin-provisioning
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# https://communities.vmware.com/thread/498408
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echo; echo "**** Simple virtual machine cloning script ****"; echo
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sleep 0.5; echo "Before you continue all snapshots need to be deleted"
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echo "and all virtual disks (.vmdk files) need to be consolidated."; echo
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echo "And please, for your own sake, make sure the VM is powered down!"; echo
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echo "Do you want to continue? [Y]"
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read a
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if [ -z $a ] || [ $a == "Y" ] || [ $a == "y" ]; then
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if [ $1 ] && [ $2 ]; then
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if [ -d $1 ]; then
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if [ -r $1 ]; then
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if [ -n "$(ls -A $1)" ]; then
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source=${1%/}
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if [ -d $2 ]; then
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if [ -w $2 ]; then
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if [ -z "$(ls -A $2)" ]; then
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destination=${2%/}
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sleep 0.5; echo "INFO: Preflight checks good. Commencing cloning process."
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for disk in $(find "$source" -maxdepth 1 -type f | grep ".vmdk" | grep -v "flat.vmdk"); do
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if [ -n "${disk##*delta*}" ]; then
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echo "ERROR: You little rebel did not remove all snapshots. Failsave exit!"; exit 1
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fi
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#try the following to move a specific snapshot
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#find . -maxdepth 1 -type f | grep "000030.vmdk"
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sleep 0.5; echo "INFO: Cloning $disk to $destination"
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vmkfstools -i $disk -d thin $destination/${disk##*/}
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if [ $? -ne 0 ]; then
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echo "ERROR: An error occured while cloning $disk to $destination."
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fi
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done
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for file in $(find "$source" -maxdepth 1 -type f | grep -v ".vmdk"); do
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sleep 0.5; echo "INFO: Copying $file to $destination"
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cp "$file" "$destination"
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if [ $? -ne 0 ]; then
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echo "ERROR: An error occured while copying $file to $destination."
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fi
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done
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else
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sleep 0.5; echo "ERROR: Destination path is not empty ($2)."; exit 1
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fi
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else
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sleep 0.5; echo "ERROR: Destination path is not writeable ($2)."; exit 1
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fi
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else
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sleep 0.5; echo "ERROR: Destination path is not a directory ($2)."; exit 1
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fi
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else
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sleep 0.5; echo "ERROR: Source path empty ($1)."; exit 1
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fi
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else
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sleep 0.5; echo "ERROR: Source path is not readable ($1)."; exit 1
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fi
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else
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sleep 0.5; echo "ERROR: Source path is not a directory ($1)."; exit 1
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fi
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else
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sleep 0.5; echo "ERROR: Source and destination path must be given."; exit 1
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fi
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else
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sleep 0.5; echo "ERROR: Mission aborted by user."
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exit 2
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fi
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#!/bin/bash
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#
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# My Odroid fan control script
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# (only tested with an Odroid HC4 running Manjaro)
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#
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# Information (don't touch unless you're me)
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NAME="odroid-fancontrol.sh"
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AUTHOR="david@socialnerds.org"
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VERSION="0.2.1"
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LICENSE="MIT"
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DESCRIPTION="$NAME (v$VERSION) controls the fan speed in an Odroid HC4 (and possibly others) based on temperature. It is written by $AUTHOR and published under the $LICENSE license."
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# Configuration
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THRESHOLD=50000
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DISTANCE=1000
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INTERVAL=30
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STEPS=(120 160 210 255)
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FAN="/sys/class/hwmon/hwmon2/pwm1"
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LOGFILE="/var/log/hc4_fancontrol.log"
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# Get all temperature readings and return the highest value
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function get_temp() {
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local TEMPS=($(cat /sys/devices/virtual/thermal/thermal_zone*/temp))
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local RESULT=${TEMPS[0]};
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for TEMP in ${TEMPS[@]}; do
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if [ $TEMP -gt $RESULT ]; then
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RESULT=$TEMP
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fi
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done
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echo $RESULT
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}
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# Get current fan speed
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function get_speed() {
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local SPEED=$(cat $FAN)
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echo $SPEED
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}
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# Set new fan speed
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function set_speed() {
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local CURRENT_SPEED=$(get_speed)
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local NEW_SPEED=$1
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if [ $CURRENT_SPEED -ne $NEW_SPEED ]; then
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echo $NEW_SPEED > $FAN
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if [ -n $LOGFILE ]; then
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echo "$(date +%Y%m%d-%H%M%S): Temp[$(get_temp)], Speed[$(get_speed)]" >> $LOGFILE
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fi
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sleep 3
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fi
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}
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# Set fan mode to manual
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echo "disabled" | tee /sys/class/thermal/thermal_zone{0,1}/mode > /dev/null
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# Run loop
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while true; do
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TEMP=$(get_temp)
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SPEED=$(get_speed)
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NEW_THRESHOLD=$THRESHOLD
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if [ $TEMP -gt $THRESHOLD ]; then
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for STEP in ${STEPS[@]}; do
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if [ $TEMP -gt $NEW_THRESHOLD ]; then
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NEW_THRESHOLD=$((NEW_THRESHOLD + DISTANCE))
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if [ $SPEED -lt $STEP ]; then
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set_speed $STEP
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fi
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fi
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done
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else
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set_speed 0
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fi
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sleep $INTERVAL
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done
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#!/bin/bash
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if [ -z "$1" ]; then
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echo "error: pls supply at least one domain name"
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exit 1
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fi
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NAME="$1"
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DOMAINS="$*"
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OPTIONS="--issue --dns dns_miab --server letsencrypt"
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COMMAND="/usr/bin/acme.sh"
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ACME_PATH="/srv/acme"
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for DOMAIN in $DOMAINS; do
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OPTIONS="$OPTIONS -d $DOMAIN"
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done
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# requesting certificate
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$COMMAND $OPTIONS
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# installing certificate to $ACME_PATH
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if [ $? -eq 0 ]; then
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$COMMAND --install-cert -d $NAME --key-file $ACME_PATH/$NAME.key --fullchain-file $ACME_PATH/$NAME.crt --reloadcmd "systemctl restart nginx.service"
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else
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echo "error: an error occured while issuing certificate."
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exit 1
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fi
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#!/bin/bash
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# name: switch_desktop.sh
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# version: 0.1
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# author: david@socialnerds.org
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# description: switch to next, previous, specific desktop.
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# you can also toggle between first and second desktop.
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#
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# usage: ./switch-desktop.sh next|prev|<int>|toggle
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num=$(wmctrl -d | grep "*" | awk '{print $1}')
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lockfile="/tmp/switch_desktop.lock"
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if [ ! -f $lockfile ]; then
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echo "creating lockfile [$lockfile]"
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touch $lockfile
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if [[ "$1" =~ ^[0-9]+$ ]]; then
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echo "switching to specific desktop [$1]"
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wmctrl -s $1
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elif [ "$1" == "next" ]; then
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echo "switching to next desktop [$next]"
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next=$((num+1))
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wmctrl -s $next
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elif [ "$1" == "prev" ]; then
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if [ $num -ne 0 ]; then
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echo "switching to previous desktop [$prev]"
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prev=$((num-1))
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wmctrl -s $prev
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fi
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elif [ "$1" == "toggle" ]; then
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if [ $num -eq 0 ]; then
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echo "switching to second desktop"
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wmctrl -s 1
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else
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echo "switching back to first desktop"
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wmctrl -s 0
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fi
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fi
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echo "waiting for 0.5 seconds"
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sleep 0.5
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echo "cleaning up lockfile [$lockfile]"
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rm $lockfile
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fi
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#!/bin/bash
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# name: watch_containers.sh
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# author: david@socialnerds.org
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# version: 0.1
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# license: GPLv3
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# description: Checks if the running container count
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# matches a number provided as $1 and optionally
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# reports results to a healthchecks endpoint.
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# usage: ./watch_containers.sh <number> <optional-healthchecks-url>
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# **** function definitions ****
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function usage {
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echo "usage: ./watch-containers.sh <number> <optional-healthchecks-url>"
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}
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function get_container_count {
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local CNT=$(docker ps --format {{.Names}} | wc -l)
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if is_int "$CNT"; then
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echo $CNT
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fi
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}
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function is_int {
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local INT_EXPR='^[0-9]+$'
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if [[ $1 =~ $INT_EXPR ]]; then
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return 0
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else
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return 1
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fi
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}
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function is_url {
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local URL_EXPR='^https?://.+$'
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if [[ $1 =~ $URL_EXPR ]]; then
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return 0
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else
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return 1
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fi
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}
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# **** start ****
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#exit if no options
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if [ -z "$1" ]; then
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usage
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exit 1
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fi
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#exit if $1 is no intager
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if ! is_int "$1"; then
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usage
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exit 1
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fi
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#set expected running containers
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NUM=$1
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#get running container count
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CNT=$(get_container_count)
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#set healthchecks url if not empty
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URL=""
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if [ -n "$2" ]; then
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#exit if $2 is no valid url
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if ! is_url "$2"; then
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usage
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exit 1
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fi
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URL="$2"
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fi
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MSG="Running containers: $CNT
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Expected containers: $NUM"
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echo "$MSG"
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#report to healthchecks
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if [ -n "$URL" ]; then
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if [ $NUM -eq $CNT ]; then
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curl -m 10 --retry 5 --data-raw "$MSG" "$URL"
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else
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curl -m 10 --retry 5 --data-raw "$MSG" "$URL/fail"
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fi
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fi
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# **** end ****
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exit 0
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