This is a quick guide to mounting a qcow2 disk images on your host server. This is useful to reset passwords, edit files, or recover something without the virtual machine running.
Step 1 - Enable NBD on the Host
modprobe nbd max_part=8
error_page 400 404 405 =200 @40*_json; | |
location @40*_json { | |
default_type application/json; | |
return 200 '{"code":"1", "message": "Not Found"}'; | |
} | |
error_page 500 502 503 504 =200 @50*_json; | |
location @50*_json { |
from django.db import connections | |
from django.db.models.query import QuerySet | |
from __future__ import print_function | |
class QuerySetExplainMixin: | |
def explain(self, analyze=True): | |
cursor = connections[self.db].cursor() | |
print(self.query) | |
print() | |
sql, params = self.query.sql_with_params() |
#!/bin/bash | |
# | |
# Script to setup a Elastic Beanstalk AMI with geospatial libraries and postGIS | |
# | |
# sh aws_ami_prep.sh > aws_ami_prep.log 2>&1 & | |
# Go to ec2-user home directory | |
cd /home/ec2-user | |
# yum libraries |
# You don't need Fog in Ruby or some other library to upload to S3 -- shell works perfectly fine | |
# This is how I upload my new Sol Trader builds (http://soltrader.net) | |
# Based on a modified script from here: http://tmont.com/blargh/2014/1/uploading-to-s3-in-bash | |
S3KEY="my aws key" | |
S3SECRET="my aws secret" # pass these in | |
function putS3 | |
{ | |
path=$1 |
#MongoDB 3.2.x Replica Sets on AWS EC2 A MongoDB replica set provides a mechanism to allow for a reliable database services. The basic replica set consists of three servers, a primary, a secondary and an arbitrator. The primary and secondary both hold a copy of the data. The arbitrator is normally a low spec server which just monitors the other servers and help with the failover process. In production, there can be more than three servers.
To setup mongo as a replica set on Amazon Web Services EC2 you need to first setup a security group with ssh on port 22 and mongodb on port 27017. You then need to create three servers. Select Ubuntu 14.04 LTS x64 and a micro (or bigger depending on your database size, ideally you should have enough memory to match your database size) instance for the primary and secondary and a nano instance for the arbitrator.
##Adjust the File System on each Server The operating system by default will update the last access time on a file. In a high data throughput database application
import requests | |
from boto.s3.connection import S3Connection | |
c = S3Connection(AWS_ACCESS_KEY, AWS_SECRET_KET) | |
data = 'file content' | |
filename = 'dir/name.txt' | |
bucket_name = 'your-bucket-name' | |
headers = {'Content-Type': 'text/plain'} |
# You don't need Fog in Ruby or some other library to upload to S3 -- shell works perfectly fine | |
# This is how I upload my new Sol Trader builds (http://soltrader.net) | |
# Based on a modified script from here: http://tmont.com/blargh/2014/1/uploading-to-s3-in-bash | |
S3KEY="my aws key" | |
S3SECRET="my aws secret" # pass these in | |
function putS3 | |
{ | |
path=$1 |
import hashlib as hash | |
# Specify how many bytes of the file you want to open at a time | |
BLOCKSIZE = 65536 | |
sha = hash.sha256() | |
with open('kali.iso', 'rb') as kali_file: | |
file_buffer = kali_file.read(BLOCKSIZE) | |
while len(file_buffer) > 0: | |
sha.update(file_buffer) |
# Generate a BaseSystem.dmg with 10.13 Install Packages | |
hdiutil attach /Applications/Install\ macOS\ 10.13\ Beta.app/Contents/SharedSupport/InstallESD.dmg -noverify -mountpoint /Volumes/highsierra | |
hdiutil create -o /tmp/HighSierraBase.cdr -size 7316m -layout SPUD -fs HFS+J | |
hdiutil attach /tmp/HighSierraBase.cdr.dmg -noverify -mountpoint /Volumes/install_build | |
asr restore -source /Applications/Install\ macOS\ 10.13\ Beta.app/Contents/SharedSupport/BaseSystem.dmg -target /Volumes/install_build -noprompt -noverify -erase | |
cp -R /Volumes/highsierra/Packages /Volumes/OS\ X\ Base\ System/System/Installation | |
hdiutil detach /Volumes/OS\ X\ Base\ System/ | |
hdiutil detach /Volumes/highsierra/ | |
mv /tmp/HighSierraBase.cdr.dmg /tmp/BaseSystem.dmg |