Placing all vCAC 5.2 web components and REPO404 error

Hi all

I know vCAC 5.2 is the previous version now with vCAC 6.0 being released.  However there are still a large number of vCAC 5.2 projects running.  Including the one I am working on at the moment.

I had a problem where the initial install was done by some colleagues  and I continued with the installation building out the vCAC web layer to a 2 node load balanced construct.  The install completed by my colleagues  was following my design.  I had placed the vCAC Manager Server role and the vCAC Model Manager Web services role on separate machines.  My reasoning around this was based on the security requirements of the customer.

The installation was functioning well until we came to build the second web server.  We had some major problems with all the portals.  We lost both the vCAC admin portal and the vCAC Self Service Portal and got REPO404 errors when trying to access them.

I looked over the logs of the vCAC web servers and could see loads of SSL errors.  So I check the certificates on all the servers and all of them were correct.

After some discussions internally I decided to place the Model manager web service on the web servers with the other website components.  We installed vCAC from the start and found this removed the error.

I think the problem was a combination of the SSL and communication URL that the model manager was using was being replaced with a new one when the second Admin portal service was installed.  This then conflicted with URLs and certs in the Manager service and maybe in the repository.  We could have over come this with a load balancer, but at the time we didn't have this available. 

Hope this helps if you see the REPO 404 error as there isn't much documented about it. 

Using Network Profiles in vCAC 5.2

Hi All

Another quick thing I thought I would blog during an install I am doing.  The customer is building from my design and came over to me and asked "Where is the Network Profiles option"  After going over and seeing what they were asking it became apparent that they were unaware of the obscure place this is enabled. 

Go to vCAC Administrator > Customization and then tick the box for "Enable Static IP service" Click OK and this will enable the Network Profiles option along the side bar.

Thanks
Phil

Installing ESXi via USB drive

Being mainly an architect or a design lead on many projects I am finding I don't tend  to get too involved with installs as much as I would like.  But when rebuilding my lab I found a good USB boot device tool.

Universal USB installer

Select the Other Linux Distro.  This will then let you select the ESXi install and then your USB. 

Very good tool and works a treat.

vSphere 5.5 - SSO Setup and additional configuration

Hi all,
So when I was rebuilding my lab I took note from internal communications that we had made some changes to SSO, both under the hood and for the install.

So I started the install and selected the "Simple Install" as I was only building a lab.

SSO Admin Account

Over the installation steps you have to configure the SSO admin password.  Now in 5.1 the default admin user was admin@system-domain First thing I noted was this had changed.  The default administrator account for SSO is now Administrator@vsphere.local

 

Attach Identity Source

So after the installation I logged in with the new Administrator@vsphere.local account.  I then logged out to see if the AD that the vCenter was a member of, had been added to the SSO identity sources.  With vSphere 5.1 the AD was added automatically.  I received an error message stating that it could not log in.

So I went to add the identity source to the SSO configuration using the Web Client. 

 

Select the configuration option down the side menu and then select the identity sources tab, and click the green plus.  You will get the below popup window.

 Because this was my Lab I used the domain Administrator account and I used port 389 for LDAP.  In a production environment you would need to configure a Read Only AD account specificity for vSphere to allow you to track AD access.  You would also want to use SSL for LDAP to make the network communication secure.

Test the connection and then click ok.  Give the Web Client a second to perform the action of adding the source.

Once the ID source is added you don't get access straight away, you need to add a group from the ID source to SSO and then to vCenter to allow it access.

Add ID source group to SSO 

Next you need to add a group from the ID source to SSO to allow access from the ID source to vCenter and SSO.

If I just login with an account from the ID source I get presented with an empty vCenter or an access denied as the account has no permissions.

I now need to add the accounts I am going to administer vSphere with, to the SSO group that is assigned Administrator permissions in vCenter.

By default the SSO group called Administrators is added to the vCenter group called Administrators. This is why the account Administrator@vsphere.local has access to the vCenter and all the objects it controls.

The account I want to administer the vCenter with is called vsphere-admin and the domain admin account called Administrator this is more a backup account.

This time load the Web Client select the configuration tab, and under SSO select Users and groups.  This will allow you to see the groups that are configured in SSO.

 

Select the Administrators group and the accounts included in this group are listed below.  If you select the green cross in the window below you can add an account to the group.

Select the correct ID source from the drop down, and then find the account you want to add.  Click add and then select the Ok button.

 

Web Client in my lab took a few mins to add this to the group but after the account has been added you should see a screen like the one below, showing the accounts you have added to the group.

 

 You can add accounts directly to the vCenter  Administrator group using the traditional methods.  So we can add the domain accounts to vCenter and bypass SSO altogether, I would not recommend this as SSO is used in other products and adoption of it now will also make it less painful when it is an essential component in future releases.

 

 

vSphere 5.5 - Whats changed

Hi All

I have tried not to call this a "Whats New" blog post as I plan on doing one of those in the future.  However I did want to post up some info about things I have noticed when building my vSphere 5.5 lab.

Coincidentally I have been asked by one of two customers about things they have noticed and so I thought it was worth publishing something I could reference to future questions. So a few posts will follow about things I have noted in my Lab setup.

My Lab is running the following

1 vCenter - Windows 2K8 R2 SQL Express
1 DC - Windows 2K8 AD, DNS.  AD running 2008 R2 domain level.
2 ESXi hosts - Resource
1 ESXi host - MGMT Runs vCNS
1 vC AC 5.2 Server

I may add more machines to the Lab later on but it is all running on a MacBook with Fusion Pro so I am limited to how many machines I can run.

Keep looking and Ill post updates soon.

vCD without vCNS

One of the most interesting solutions I have been working on recently is a vCD project where the customer has decided to use an alternative to vCNS (vCloud Networking and security).  I can not name the product they want to use as an alternative but for the discussion inside this blog I think the principle applies to most third party products.  

The first thing I asked the customer was why do you not want to use vCNS? The answer was quite simply that there security department doesn't see the vCNS firewall as secure. When asking for a bit more detail we were not provided with anything credible in my view.  One of the main problems they communicated as an issue is that the appliances are deployed on demand and are all applied with the same default password. (this can be changed after the appliance is deployed)  Anyhow this is not the aim of my blog, to detail my customer problems, and so we were asked to use an virtual firewall that they already use. 

Now the first thing I needed to comunicate to the customer we that we HAVE to install vCNS manager, this is a requirement of vCD and all network related instructions are sent to vCNS. This includes port group creations for vCD networks.  I also needed to point out to the customer we will be using VXLAN and vCNS is used in securing multitenancy within the VXLAN.

So once we had cleared all the above and it was agreed that there was no way we could push the customer back to using vCNS we looked at the use cases and the limitations that would be imposed. 

First lets break down what not using vCNS removed from vCD.

1. Limits the use of OrgvDC networks, we can't create a routed or an isolated OrgvDC network with IP addressing ranges specified. - When creating a network with an IP range  a vCNS appliance is applied to the networks corresponding dVportGroup.  This is to assign DHCP. 
2. We can't create any vApp networks with routed connections.
3. Networks and network services configuration is no longer made visible to vCD. This restricts what we can do for network service creation when using vCD. 
4. No vCO plugin for any third party software defined networking service. 
5. No Charge Back monitoring for any Network elements, usage of bandwidth, IP addresses and network services such as firewall rules and NAT rules.

So how did I design around this?

1. The customer was given two options of how to manage IP addressing inside the vCD networks. a) Was to use there third party firewall appliance, b) Was to use a vCO workflow to populate the IP address of the VM's in the vApp from there IPAM system.
2. We had to place an extra VM in the vApp.  This extra VM is the firewall VM and because vCD just thinks this is another VM it creates it in the users OrgvDC and uses the resource provisioned to the user/Organization.  If this was vCNS the appliances are provisioned in the SYSTEM resource pool and do not impact the users resource allocation.
3. The IPAM system and the firewall VM has no integration with vCD and this particular firewall vendors API is not very good. So using vCO to talk to it is a challange.  This gives the customer another system to monitor and manage as we cant pull any information from either of these systems.
4. We can try and develop a vCO plugin, most of the plugin's are developed by VMware but the limitation of this firewall vendors API presents a big challenge and my customer is not going to pay for a plugin development.
5. We can add a fixed cost for the VM in CBM and charge a fixed amount each month.  We can monitor bandwidth but not in the same way we can with a vCNS appliance. 

This is becoming more and more common and the above are some small use cases for my customer.  Other customers may have more risks and may also have more constraints and requirements of vCNS and/or a third party firewall appliance. 

With the release of NSX in the not so distant future I hope people start to see VMware network virtualization as a more credible technology.

So if you get asked this question I hope this post can give you some food for thought on the impact and the design considerations/constraints it will impose.

vCloud Director - Moving vApps Between Clusters In the Same PvDC

 I had a request from a customer of mine to be able to move there vApps and VM's between vSphere clusters in the same vCD Provider Virtual datacenter.  The customers first thoughts were to drop down into the vCenter and then just do a normal vMotion, however they get the standard message detailing that this object is managed by vCD.

This should have made the customer think that maybe doing it this way was not the best idea, But they progressed and migrated the VM anyway.  Once they had done this.  It broke the relationship with vCD and the VM became unmanageable in vCD.

Now if this was a simple migrate a VM/vApp between clusters using the same storage we could go to System>Manage And Monitor> Resource Pools and select the VM from source cluster and the select "Migrate" to move the VM to the destination cluster. 

Now the customer I was working with has been using VBLOCK's in there datacenter to build there vCloud environment.  This is brilliant as the VBLOCK is a very impressive bit of kit and after working with them for a number of months I am very happy with recommending them to customers.  But using a VBLOCK did present us with a challenge.

The customer was using a single provider virtual datacenter in vCD.  This was backed by several clusters each cluster corresponded to a single VBLOCK.  The Clusters were 24-32 hosts.  Each VBLOCK has its own VNX SAN and the storage from this is only presented to the hosts in the same VBLOCK.  There is no storage shred between the VBLOCKs, and thus between the clusters.  

So if we have no shared storage between the clusters backing the Provider Virtual Datacenter. How do we move VMs between the clusters.  The answer is using Storage vMotion! Hang On Storage vMotion is not a selectable option in vCD.

After thinking a little more I decided we could select the VMs storage profile and change this.  This should instruct the VM to conduct a joint "Change Host and Change datastore" migration.

In the example below I have my vApp built on a cluster called "Site1".  This cluster has a corresponding storage profile.  The storage for this profile is only mounted on the hosts in the cluster "Site1"

Now the vApp and the VM must be completely shutdown.  If the vApp is showing a status of "Partially Running" then this operation will fail.  The same applies for if the VM is not shutdown.  You will see an error message of "Invalid Parameter" 

Select a host profile that is linked to another cluster in the Provider Virtual Datacenter.  In my lab this is "Site2" and select OK.

Now the VM will show as being "Busy" while the Storage vMotion Is conducted in the background.  If you drop to the vSphere Client you will see more information. The vSphere client will show the VM as being relocated.

 

Once the Storage vMotion has completed you will see the VM in vCD show as normal and examining the vSphere client will show the VM as being moved to another cluster.

This resolved my customers problem, and we integrated this into a rather cool vCO workflow that could be kicked off from the customers Cisco based cloud portal.  The workflow I may detail in another post but it basically looked at the VMs inside a vApp and then changed there storage profile to relocate them based on the input from the user.

My customer then requested that this activity of moving between the clusters was conducted with no downtime.  The ONLY way this is possible is to use a SWING datastore.  This is a datastore that is presented to all the hosts in the Provider.  This breaks a number of VCE design constraints and would result in having to have a datastore equal to the size of the largest VM.  In my customers case this is 8TB.  So this 8TB is going to be sitting there doing nothing most of the time, as a VCE design constraint is not to share storage between VBLOCK's let alone run workloads on it.

I am working to resolve this at the moment but I am not sure I will find a resolution. We are constrained by the CBT technology used in Storage vMotion and the design constraints of VCE.