I thought that most people would have seen this awesome fling by now, but I received a couple of questions if it was already possible to migrate from the Windows vCenter Server to the vCenter Server Appliance. Surprisingly enough as William Lam wrote an excellent blog post on this subject. Anyway, this blog is just a simple short pointer to the Windows vCenter to vCenter Appliance migration tool and to William blog post. Read it, and go for it!
I was reviewing a paper on vCenter availability for 6.0 and it listed a watchdog service which monitors “VPXD” (the vCenter Server service) on the vCenter Server Appliance. I had seen the service before but never really looked in to it. With 5.5 the watchdog service (/usr/bin/vmware-watchdog) was only used to monitor vpxd and tomcat but in 6.0 the watchdog service seems to monitor some more services. I did a “grep” of vmware-watchdog within the 6.0 appliance and the below is the outcome, it shows the services which are being watched:
ps -ef | grep vmware-watchdog root 7398 1 0 Mar27 ? 00:00:00 /bin/sh /usr/bin/vmware-watchdog -s rhttpproxy -u 30 -q 5 /usr/sbin/rhttpproxy -r /etc/vmware-rhttpproxy/config.xml -d /etc/vmware-rhttpproxy root 11187 1 0 Mar27 ? 00:00:00 /bin/sh /usr/bin/vmware-watchdog -s vws -u 30 -q 5 /usr/lib/vmware-vws/bin/vws.sh root 12041 1 0 Mar27 ? 00:09:58 /bin/sh /usr/bin/vmware-watchdog -s syslog -u 30 -q 5 -b /var/run/rsyslogd.pid /sbin/rsyslogd -c 5 -f /etc/vmware-rsyslog.conf root 12520 1 0 Mar27 ? 00:09:56 /bin/sh /usr/bin/vmware-watchdog -b /storage/db/vpostgres/postmaster.pid -u 300 -q 2 -s vmware-vpostgres su -s /bin/bash vpostgres root 29201 1 0 Mar27 ? 00:00:00 /bin/sh /usr/bin/vmware-watchdog -a -s vpxd -u 3600 -q 2 /usr/sbin/vpxd
As you can see vmware-watchdog is ran with a couple of parameters, which seem to different for some services. As it is the most important service, lets have a look at VPXD. It shows the following parameters:
What the above parameters result in is the following: the service, named vpxd (-s vpxd), is monitored for failures and will be restarted twice (-q 2) at most. If it fails for a third time within 3600 seconds/one hour (-u 3600) the guest OS will be restarted (-a).
Note that the guest OS will only be restarted when vpxd has failed multiple times. With other services this is not the case as the “grep” above shows. There are some more watchdog related processes, but I am not going to discuss those at this point as the white paper which is being worked on by Technical Marketing will discuss these in a bit more depth and should be the authoritative resource.
** Please do not make changes to ANY of the above parameters as this is totally unsupported, I am mere showing the details for educational purposes and to provide a better insight around vCenter availability when it comes to the VCSA. **
Yes the day is finally there, vSphere 6.0 / SRM / VSAN (and more) finally available. So where do you find it? Well that is simple… here:
- ESXi 6.0
- vCenter Server 6.0
- vSphere Data Protection 6.0
- vSphere Replication 6.0
- vRealize Orchestrator Appliance 6.0.1
- VMware vCenter Operations Manager Foundation 5.8.5
- vCenter Site Recovery Manager 6.0
- VMware vRealize Automation 6.2.1
- VMware vRealize Operations Manager 6.0.1
- VMware vRealize Business 6.1.0 for vSphere
- VMware vRealize Infrastructure Navigator 5.8.4
For those not monitoring the VMware website like a hawk… VMware just released vCenter 5.5 Update 1b. This update contains a couple of fixes which are critical in my opinion. So make sure to upgrade vCenter as quickly as possible:
- Update to OpenSSL library addresses security issues
OpenSSL libraries have been updated to versions openssl-0.9.8za, openssl-1.0.0m, and openssl-1.0.1h to address CVE-2014-0224.
- Under certain conditions, Virtual SAN storage providers might not be created automatically after you enable Virtual SAN on a cluster
When you enable Virtual SAN on a cluster, Virtual SAN might fail to automatically configure and register storage providers for the hosts in the cluster, even after you perform a resynchronization operation. This issue is resolved in this release. You can view the Virtual SAN storage providers after resynchronization. To resynchronize, click the synchronize icon in the Storage Providers tab.
You can download the bits here.
One of the VMware product managers asked me to share this with you guys and ask you to please take the time to fill out this vCenter Server availability and performance survey. It is a very in-depth survey which should help the engineering team and the product management team making the right decisions when it comes to scalability and availability. So if you feel vCenter scalability and availability is important, take the time to fill it out!