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JPalmerGithub

Relocate an existing libvirtd (KVM) images directory

By default, KVM (libvirtd) images on Ubuntu and most other Linux distributions are found in /var/lib/libvirt/images. This can be inconvenient if you don't have a separate /var partition that can grow over time to accommodate multiple large images.

You can simply rename the images folder to something else and then symlink to a larger space with it (e.g. ln -s /data1/libvirt/images /var/lib/libvirt/images). That's what I used to do.

But that can lead to all sorts of unanticipated trouble. The right way to have your images on a bigger disk is to change the path for libvirt's default storage pool, which is logically where KVM is going to create them.

First check to make sure a default pool exists:

JPalmerGithub

Create the default KVM storage pool for images

Some distributions create the defaut KVM (libvirtd) storage pool for images when they install KVM, others do this upon the creation of the first KVM guest. Creating the default pool from scratch is pretty straightforward. Here's how to do it with virsh.

First verify there is no existing default pool:

$ virsh pool-list --all
 Name      State    Autostart
-----------------------------

JPalmerGithub

Tools

• Kops https://github.com/kubernetes/kops/blob/master/docs/README.md
• Kubectl https://kubernetes.io/docs/tasks/tools/install-kubectl/
• kubespy https://blog.pulumi.com/kubespy-trace-a-real-time-view-into-the-heart-of-a-kubernetes-service
• kops https://icicimov.github.io/blog/virtualization/Kubernetes-Cluster-in-AWS-with-Kops/

Presentations

JPalmerGithub

>>> docker exec -it CONTAINERID /bin/sh
/app # telnet
/bin/sh: telnet: not found

/app # apk update
fetch http://dl-cdn.alpinelinux.org/alpine/v3.7/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.7/community/x86_64/APKINDEX.tar.gz
v3.7.0-243-gf26e75a186 [http://dl-cdn.alpinelinux.org/alpine/v3.7/main]
v3.7.0-229-g087f28e29d [http://dl-cdn.alpinelinux.org/alpine/v3.7/community]

JPalmerGithub

# Simple SonarQube database and user creation for Postgresql
#

sudo -u postgres psql postgres
CREATE DATABASE sonar;
CREATE USER sonar WITH PASSWORD 'verysecret';
GRANT ALL PRIVILEGES ON DATABASE sonar TO sonar;

JPalmerGithub

from pygments import highlight
from pygments.lexers import PythonLexer
from pygments.formatters import Terminal256Formatter
from pprint import pformat

def pprint_color(obj):
    print highlight(pformat(obj), PythonLexer(), Terminal256Formatter())

JPalmerGithub

import boto3

class tableCreate(object):
    def __init__(self, **kwargs):
        self.__dict__.update(kwargs)

    # Query client and list_tables to see if table exists or not
    def queryCreate(self):
        # Instantiate your dynamo client object
        client = boto3.client('dynamodb')

JPalmerGithub

#!/bin/bash
# 2015 Updates to sunkid's script. chrisfcarroll
# - added more quote marks to cope with e.g. spaces in volume names.
# - get machine UUID from ioreg instead of parsing and system report.
# - added steps to tell Time Machine to use your new backup drive.
# - renamed. 
# Make it executable with e.g. chmod a+x tmMakeImage && mv tmMakeImage /usr/local/bin.
#
# A bash script to create a time machine disk image suitable for
# backups with OS X 10.6 (Snow Leopard) and later.

JPalmerGithub

import boto3
import sys

assume_role = sys.argv[1]

# create an STS client object that represents a live connection to the 
# STS service
sts_client = boto3.client('sts')

# Call the assume_role method of the STSConnection object and pass the role