Issue:
I want to reduce my Amazon EC2 usage by stopping and starting instances at predefined times or utilization thresholds. Can I configure AWS Lambda and AWS CloudWatch to help me do that automatically?
Short Description:
You can use a CloudWatch Event to trigger a Lambda function to start and stop your EC2 instances at scheduled intervals.
Resolution:
See AWS Web Page for more: https://aws.amazon.com/premiumsupport/knowledge-center/start-stop-lambda-cloudwatch/
Simple shell script wrapper to update all lxd container hypervisor images running Debian or Ubuntu Linux. Run the below script on the host of your lxd server to update all the lxd containers running Ubuntu or Debian. Could be modified to suit CentOS/RedHat OS and/or you container OS of choice.
Script:
#!/bin/bash
# A simple shell script to update all lxd container hypervisor
# URL: https://bash.cyberciti.biz/virtualization/shell-script-to-update-all-lxd-container-hypervisor/
# Tested on : Ubuntu 16.04 LTS lxd server
# Tested on : Ubuntu/Debian lxd container hypervisor only
# ----------------------------------------------------------------------------
# Author: nixCraft
# Copyright: 2016 nixCraft under GNU GPL v2.0+
# ----------------------------------------------------------------------------
# Last updated 14 Aug 2016
# ----------------------------------------------------------------------------
# Set full path to bins
_apt="/usr/bin/apt-get"
_lxc="/usr/bin/lxc"
_awk="/usr/bin/awk"
# Get containers list
clist="$(${_lxc} list -c ns | ${_awk} '!/NAME/{ if ( $4 == "RUNNING" ) print $2}')"
# Use bash for loop and update all container hypervisor powered by Debian or Ubuntu
# NOTE: for CentOS use yum command instead of apt-get
for c in $clist
do
echo "Updating Debian/Ubuntu container hypervisor \"$c\"..."
${_lxc} exec $c ${_apt} -- -qq update
${_lxc} exec $c ${_apt} -- -qq -y upgrade
${_lxc} exec $c ${_apt} -- -qq -y clean
${_lxc} exec $c ${_apt} -- -qq -y autoclean
done
Reference:
https://bash.cyberciti.biz/virtualization/shell-script-to-update-all-lxd-container-hypervisor/
Attic is a deduplicating backup program written in Python. The main goal of Attic is to provide an efficient and secure way to backup data. The data deduplication technique used makes Attic suitable for daily backups since only the changes are stored.
More information and Download Install instructions are available from the site:https://attic-backup.org
To see what RAM speed and type you have run this command:
sudo dmidecode --type 17
The output will look something like this:
# dmidecode 2.11 SMBIOS 2.8 present. # SMBIOS implementations newer than version 2.7 are not # fully supported by this version of dmidecode. Handle 0x003F, DMI type 17, 40 bytes Memory Device Array Handle: 0x003E Error Information Handle: Not Provided Total Width: 64 bits Data Width: 64 bits Size: 8192 MB Form Factor: SODIMM Set: None Locator: DIMM 1 Bank Locator: Channel A Slot 0 Type: DDR3 Type Detail: Synchronous Speed: 1600 MHz Manufacturer: Kingston Serial Number: 097054251107 Asset Tag: 9876543210 Part Number: 9905428-087.A00G Rank: 2 Configured Clock Speed: 1600 MHz
Obviously you should or would be only running this on a physical box.