vRealize Orchestrator for beginners and not only (part 1/2).
VMware vRealize orchestrator is a fantastic tool to do so infinity number of tasks. Depends on the task you want to do orchestrator can be easy to use because of already created an provided with appliance ready to use workflows. If you want to achieve more, sometimes it can be …
Symptoms: virtual system cannot be powered off from the vCenter or ESXi UI.
Symptoms: virtual system cannot be poweredoff from the vCenter or ESXi ui console. Cause: So, you have just checked that there is no communication between vCenter or inside ESXi between services. From ESXi shell you are getting “connection failed” with esxcli and other commands. This can be caused by ADP …
DIF errros in ESXi log.
Have you ever saw DIF ERROR in yours ESXi logs. This is something you should probably start to worry about. If you have never heard about DIF, it is optional feature for disk systems and communications that extend the SCSI standard to provide end-to-end protection of user data. So it …
ESXi issues connected with storage.
ESXi issues connected with storage. There is a lot articles over the internet with information or questions regarding the storage manage by ESXi. No wonder, as storage issue is the most serious one and for many VMware administrators hard to debug. Problems can be connected with storage high latency as …
VM migration to HPE Synergy VC can make your VM inaccessible.
VM migration (vMotion) from some other environments (rack servers, other blades chassis) to HPE Synergy can cause lost of the connectivity. The main problem is that it is not happening every time. It is like 5-10% all migrations has problems rest of them runs smoothly. The main reason may be …
Some old school Unix tricks to pacer VMware logs.
Probably most of you already are using some tool to collect, manage and search log files. One of them can be vRealize Log Insight which is very handy. But in some other scenario you will be happy to know the below commands to check in the fast way ESXi logs. …
Creating snapshot failed
Error creating snapshot on virtual machine. Situation is usually repeatable, but sometimes fix after vm reboot. Error: “Creating snapshot failed.. An error occurred while saving the snapshot: Failed to quiesce the virtual machine” In such case it is likely problem with with VSS. There are there ways to resolve such …
VMware KB1003409 and its consequences.
One of the biggest advantages of using ESXi over Linux or Microsoft based virtualization (xen, kvm, hyper-v) is independency from local drive. For a long time, I lived with knowledge that ESXi system partitions is only needed for system boot and then with some specific configuration ESXi doesn’t need the …
Migrate virtual system between vCenter with VM name changing.
Check if you have a reliable backup of VM. Check VM configuration, primarily vmx file location, disks, controller and portgroups where the system is connected to. This step is important, in any case something goes wrong, so do not ignore it!Also it could be worth to check if you can …
Tworzenie certyfikatu ssl dla strony internetowej.
Nic trudnego, ale zawsze gdy tworzę certyfikat (a robię to co kilka miesięcy) kończy się to zwykle ponownym przeglądaniem Internetu. Poniżej zamieszczam procedurę, która zadziała w większości wypadków. Potrzebujemy: strony hostującej naszą stronę utworzyć żądanie z certyfikatem – CSR (najprościej pod linuksem lub macos lub w podsystemie linux w windowsie) …