I saw this guy testing the meters on the gas pumps today and asked him a few questions. You’d be happy to know about this:
Q1) Does it really make any difference if you pump gas slowly or quickly? I’ve heard you get more gas if you are not in a hurry.
A1) Yes. The gas pumps are not tuned for slow delivery levels and will “leak” a little extra gas when run at the minimum delivery rate.
Q2) Does gas actually compress at night when it’s cold?
A2) Yes. See the Seraphin picture for the actual math formula to compute the change in volume based on temperature. For best results – pump your gas at night or early morning when the ground temp is lowest.
Full price of the course is $1,995.
Piston Cloud has launched a unique training program aimed at helping organizations get off the ground with OpenStack. Our next class, “Deploying OpenStack for Cloud Administrators,” is scheduled for May 8th and 9th here in San Francisco.
The course is ideal for IT managers, VMware administrators, and cloud architects, and features a blend of keynotes and hands-on lab work. Attendees will learn directly from the seasoned engineers who built Piston Enterprise OpenStack, and leave with a deep and comprehensive understanding of the technology, as well as many insider tips and tricks to get their own private cloud deployment off the ground. The two-day course includes:
Keynote from Piston Cloud CTO Joshua McKenty: A History of Cloud Computing
Session: Opinionated Architecture and the True Cloud
Lab: Installation and Configuration of an OpenStack Private Cloud
Lab: An Introduction to Account Creation and Administration
Session: Introduction to OpenStack Compute (Nova)
Lab: Hands-on with Instance Management and Migration
Wrap-up and Q&A
Dinner and an evening outing
Session: An Introduction to Image Management (Glance)
Lab: Working with Images
Lab: Hands-on with OpenStack Block Storage (Cinder)
Lab: OpenStack Object Storage (Swift)
Lab: Enterprise Features
Closing Wrap-up and Q&A
Rackspace Certified Technician for OpenStack
IT Professionals earn this certification after demonstrating the skills necessary to utilize and operate an OpenStack cloud.
Create instances from images, snapshots and volumes
Inject user data and files into an instance
Connect to instances via SSH and VNC
Inject a keypair into an instance and access the instance with that keypair
Set metadata on an instance
Create an instance snapshot
Pause, suspend, stop, rescue, resize, rebuild, reboot an instance
Manage volumes and volume snapshots
Manage security groups
Assign IP Addresses to an instance
View Object Storage account information
Set Object Storage account metadata
Manage Object Storage containers
Set Object Storage metadata
Set Object Storage access control lists
Set Object Storage container sync
Set Object Storage container versioning
Set Object Storage static web
Upload, list, download and delete objects
Create Temporary URL’s
Create form posts
List Identity Service catalog
Get auth tokens
Discover keystone endpoints
Reference Architecture – #refstack http://openstacksummitapril2013.sched.org/event/33821a13f4bf25259ec9e77bba9b1e51#.UXArzCtATEA
The OpenStack project does an insane amount of automated testing as part of the development cycle, but up until now there has been no corresponding testing that can be performed against running public clouds. While we want to do that, before we can test other people’s clouds for compatibility, we need to be able to express what it is they need to be compatible with.
It turns out that OpenStack is rich enough now to express a reference implementation in terms of itself, using heat templates. Some people think that’s a great end to itself – deploy your OpenStack using OpenStack – but others are not quite as sure about that yet, and have significant investment in things like chef, puppet, crowbar or cobbler. To meet the needs of expressing a useful set of testable information and not leave that specification as an academic exercise, or as the recipient of more tool wars – we’ve come up with a plan to have the heat templates describe the state, the “what” if you will, and to describe a clear boundary line across which metadata is passed to the tools on the individual nodes that will turn that metadata into configuration.
Edit the VM Settings
add the disk to the VM
yum install e4fsprogs
Disk /dev/sdb: 60.1 GB, 60129542144 bytes
Disk /dev/sdb doesn’t contain a valid partition table
n – create new partition
2 – use partition number 2
w – write partition table
/sbin/mkfs.ext4 -L /backup /dev/sdb2
mount -t ext4 /dev/sdb2 /backup
Add the following line to etc/fstab
/dev/sdb2 /backup ext4 defaults 1 2
change the zimbra backups to go to new directory
su zimbra -
zmprov gacf zimbraBackupTarget
zmprov mcf zimbraBackupTarget /backup
zmprov gacf zimbraBackupTarget
You have a machine and you want to test out openstack. You can provision and run windows VMs with an Ubuntu server acting as a hypervisor. Here are some of the ingredients you will need along with some instructions and tips. This is a work in progress so it’s not yet complete.
X86 hardware box with VT capabilities
lots of RAM – 4GB or more
fast disk – SSD for running OS and VMs and slower SATA for storing templates and media
To configure a default gateway, you can use the route command in the following manner. Modify the default gateway address to match your network requirements.
sudo route add default gw 10.0.0.1 eth0
To verify your default gateway configuration, you can use the route command in the following manner.
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.0.0.0 0.0.0.0 255.255.255.0 U 1 0 0 eth0
0.0.0.0 10.0.0.1 0.0.0.0 UG 0 0 0 eth0
If you require DNS for your temporary network configuration, you can add DNS server IP addresses in the file /etc/resolv.conf. The example below shows how to enter two DNS servers to /etc/resolv.conf, which should be changed to servers appropriate for your network. A more lengthy description of DNS client configuration is in a following section.
If you no longer need this configuration and wish to purge all IP configuration from an interface, you can use the ip command with the flush option as shown below.
ip addr flush eth0
Flushing the IP configuration using the ip command does not clear the contents of /etc/resolv.conf. You must remove or modify those entries manually.
Someone sent me a connection request saying they know me or work with me but I’m pretty sure they don’t. These guys shouldn’t be mis-representing them selves on line. It lowers the trust we have in “the system”. What can I do?
Use the Help Center link in the lower left of your screen to contact customer service.
The guys were getting some new storage setup and had the IP address set incorrectly. Usually a vmkping would be enough to prove the vmkernel interfaces were setup correctly but the vendor came back with “the firewall is blocking NFS” so I needed a way to see the ARP table to prove the MAC for the NAS was showing up on the correct VMK interface with no gateway in the data path.
This was tested to work on latest ESXi version 5 build 469512.
Here are the results:
~ # vmkping 10.2.150.104
PING 10.42.150.104 (10.2.150.104): 56 data bytes
64 bytes from 10.2.150.104: icmp_seq=0 ttl=64 time=0.201 ms
64 bytes from 10.2.150.104: icmp_seq=1 ttl=64 time=0.187 ms
— 10.42.150.104 ping statistics —
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max = 0.187/0.194/0.201 ms
~ # esxcfg-vmknic -l
Interface Port Group/DVPort IP Family IP Address Netmask Broadcast MAC Address MTU TSO MSS Enabled Type
vmk0 Management Network IPv4 126.96.36.199 255.255.255.248 188.8.131.52 00:25:90:52:91:21 1500 65535 true STATIC
vmk1 VMkernel-152 IPv4 10.2.152.158 255.255.255.0 10.2.152.255 00:50:56:76:23:45 1500 65535 true STATIC
vmk2 VMkernel-150 IPv4 10.2.150.158 255.255.255.0 10.2.150.255 00:50:56:70:34:56 1500 65535 true STATIC
~ # esxcli network ip neighbor list
Neighbor Mac Address Vmknic Expiry State
————– —————– —— ————– —–
10.2.150.104 00:50:56:2a:12:34 vmk2 993 sec
I just started testing the cool new HP Cloud which is in beta right now. While you can’t create or upload your own machine templates you can choose from some popular open source choices (all 64 bit os):
What virtualization technology does HP Cloud Compute use?
HP Cloud Compute is based on KVM virtualization technology.
What instance types are available for HP Cloud Compute?
Standard instances offer a number of virtual server types. Select the size that’s right for you based on the amount of memory, number of virtual cores, and local storage required. Although you won’t be billed during the beta I imagine once they do stop billing you the choice you make here could have an impact on your pocketbook.
Standard Instance Types
# of Virtual Cores
Local Disk (GB)
Double Extra Large
How to SSH to your VM
NOTE: the workflow for this is a little unintuitive. You get to the keypair dialog only when you are creating a VM. Be sure to take the time to follow these steps WHILE you are setting up your VM.
Creating a Keypair is the first necessary step in launching an instance for the first time. Only one keypair is needed for a series of instances launched under that keypair name.
The Keypair creation menu is located on the left side of the “keypair” dropdown of the AZ’s management page:
A separate keypair must be generated for each AZ (Availability Zone)
After entering the keypair management page, type a name for the keypair, then click “Create”.
Once the keypair has been created, a black text brick appears below. Copy and paste the entire text field.
Save it within a word processing document (notepad, text edit, word, etc.) and rename the file with a .pem extension. This allows use of the file by HP Cloud’s compute instances to identify the authorized user in part.
Prices reflect a one-time setup fee. Routed subnets are only available on Basic-S, Express-S, Pro-S, and Elite-S DSL circuits.
1.5-30 Mbps Business Class connection
starting at $229
FlexLink’s next generation network uses Ethernet in the First Mile to deliver new lower price points for higher speeds:
FlexLink Ethernet: Available today at 5Mbps, 7.5Mbps, 10Mbps, 15Mbps, 20Mbps, and 30Mbps symmetric speeds. This is the ideal step up for businesses that require outbound speed, and who may be outgrowing a current T1 configuration.
Early termination fees, eligibility restrictions, activation and other fees, taxes, charges, software limitations and other terms apply. FiOS Verizon Wi-Fi available in select areas in the U.S. with qualifying packages. Actual speeds may vary. Battery back-up for standard fiber-based voice service and E911 (but not Voice over IP) for up to eight hours.*
Need more than 25 Static IP addresses? Click here
This podcast addresses many Virtualization Security items and is always looking for more ideas. Please contact one of the panelists or contact myself via Twitter, the VMware Communities Forum, or by submitting a comment below.
Expand to View all Virtualization Security Podcast Episodes
Our past guest panelists have included people from Altor Networks, Catbird Security, Cisco, Citrix, EMC, HyTrust, NetApp, PCI DSS, Reflex Systems, RSA, TrendMicro, VMware as well as other industry virtualization security groups, consultants, and auditors.