I was wondering if one could daisy chain multiple VMware Update Manager Download Service (UMDS) appliances. The documentation doesn’t say a word about it. The only thing I found Googling this was one blog that say’s it can’t be done. But that blog was from 2014, now, 2018, let’s see…
(I tested this in Fusion virtual machines using vSphere 6.5 Update 1 (5969303))
Open the console of the first UMDS
sudo -i mkdir /mnt/cdrom mount /dev/cdrom /mnt/cdrom apt-get install openssh-server -y ifconfig #This gives the IP address (Ubuntu in Fusion creates an ens33 interface)
In the SSH session:
sudo -i wget https://github.com/lamw/vghetto-scripts/raw/master/shell/install_umds65.sh chmod +x install_umds65.sh ./install_umds65.sh /mnt/cdrom/umds/VMware-UMDS-6.5.0-5939545.tar.gz UMDSDB UMDS_DSN umdsuser VMware1! /usr/local/vmware-umds/bin/vmware-umds -v /usr/local/vmware-umds/bin/vmware-umds -G /usr/local/vmware-umds/bin/vmware-umds -S --add-url https://vibsdepot.hpe.com/index.xml --enable-host --url-type HOST /usr/local/vmware-umds/bin/vmware-umds -D
(In the example above I’ve added the HPE VibsDepot, to see if non-firstparty updates will get downloaded.)
It will now start downloading… It may take some time to complete, at the time of writing it was about 65 GB
Per William Lam’s suggestion for this test I used Python’s builtin webserver:
apt-get install python-minimal -y cd /var/lib/vmware-umds python -m SimpleHTTPServer 80
Using this as a foreground task, it shows all HTTP requests being received:
172.16.250.150 - - [18/Feb/2018 05:28:19] "GET /hostupdate/HPQ/metadata-hpnmi-vmware55-bundle-2.3-6.zip HTTP/1.1" 200 - 172.16.250.150 - - [18/Feb/2018 05:28:19] "GET /hostupdate/csco/__hostupdate20-consolidated-metadata-index__.xml HTTP/1.1" 200 - 172.16.250.150 - - [18/Feb/2018 05:28:19] "GET /hostupdate/csco/csco-VEM-5.5.0-metadata.zip HTTP/1.1" 200 - 172.16.250.150 - - [18/Feb/2018 05:28:19] "GET /hostupdate/vmw/__hostupdate20-consolidated-metadata-index__.xml HTTP/1.1" 200 - 172.16.250.150 - - [18/Feb/2018 05:28:19] "GET /hostupdate/vmw/vmw-ESXi-5.5.0-metadata.zip HTTP/1.1" 200 - 172.16.250.150 - - [18/Feb/2018 05:28:19] "GET /hostupdate/vmw/vmw-ESXi-6.0.0-metadata.zip HTTP/1.1" 200 - 172.16.250.150 - - [18/Feb/2018 05:28:20] "GET /hostupdate/vmw/vmw-ESXi-6.5.0-metadata.zip HTTP/1.1" 200 - 172.16.250.150 - - [18/Feb/2018 05:28:20] "GET /vaupgrade/bootstrap_index.xml HTTP/1.1" 200 - 172.16.250.150 - - [18/Feb/2018 05:28:20] "GET /vaupgrade/__valm-consolidated-index__.xml HTTP/1.1" 200 -
But first I needed to build a second UMDS, mostly the same as above, except:
- I didn’t add the HPE VibsDepot
- I pointed hostupdate.vmware.com and vapp-updates.vmware.com in the hosts file to localhost, by editing the hosts file to prevent it to try to download anything directly from VMware.com’s website.
- For some reason it is not possible to remove these entries from UMDS’s config.
- Nor to remove the updates for older versions. I didn’t need updates for any ESXi prior to 6.5.
- Instead of the HPE VibsDepot, I added the first UMDS as source:
/usr/local/vmware-umds/bin/vmware-umds -S --add-url http://172.16.250.129/hostupdate/__hostupdate20-consolidated-index__.xml --enable-host --url-type HOST /usr/local/vmware-umds/bin/vmware-umds -S --add-url http://172.16.250.129/vaupgrade/__valm-consolidated-index__.xml --enable-va --url-type VA
Start the download task:
vmninja@ubuntu:~$ cat / etc/hosts 127.0.0.1 localhost 127.0.1.1 ubuntu 127.0.0.1 hostupdate.vmware.com 127.0.0.1 vapp-updates.vmware.com # The following lines are desirable for IPv6 capable hosts ::1 localhost ip6-localhost ip6-loopback ff02::1 ip6-allnodes ff02::2 ip6-allrouters
After downloading was complete, I added the second UMDS to vCenter Update Manager:
After clicking download now, the Non VMware Patches are visible in vCenter:
So it seams to be possible to daisy chain UMDS. I have no idea about the supportability of this configuration, and if using something in production, use a real webserver!
This post was published originally on my personal blog https://vmninja.wordpress.com
Rob has over 20 years of IT experience, ranging from IBM Mainframe to Windows, Storage, Networking and Virtualization.
Rob is Cisco CCNA, Citrix CCA, EXIN, ITIL, Microsoft MCP/MCSA/MCSE/MCITP, NetApp NCSA, PRINCE, VMware VCP, VCAP & Specialist certified in infrastructure and virtualization fields.