Month: February 2016

vsphere-ha-waiting-for-cluster-election-to-complete-operation-timed-out

Sometimes when you add a host to a VMware vCenter HA Cluster the operation fails with a timeout for cluster election. That is still happening when running VMware vCenter 6.0 and adding 5.5 hosts to it. The normal way is to start a Reconfigure for vSphere HA on the troubled ESXi Host within the cluster. …

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storage-pdl-responses-may-not-trigger-path-failover-in-vsphere-6-0

Andreas Peetz, VMware vExpert and blogger tweeted about a major issue in VMware vSphere 6 when it comes to path failover situations. VMware is aware of the issue that is covered in KB article 2144657. Cause An inadvertent change in PDL multipathing behavior in ESXi 6.0 results in alternative working paths for a LUN not being …

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hey-vmware-developers-have-you-heard-of-tech-field-day-learning-better-ways-to-monitor-vmware

When it comes to keeping up with new products, services, and innovations in the tech industry, the realm of conferences and trade shows are largely dominated by the vendor/sponsors. Such is the case with VMworld, Cisco Live, EMC World, Microsoft Tech Ed, Dell World, and others. Not that there’s anything wrong with that — these …

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vcenter-server-appliance-6-0-performance-charts-fail-to-load-with-the-error-performance-charts-service-returned-an-invalid-response-2118223

vCenter Server Appliance 6.0 performance charts fail to load with the error: Performance Charts service returned an invalid response (2118223) If you encounter an error as mentioned in the blog title you´ll be surprised what the reason is. Warning Spoiler! IPv6 is disabled and the performance charts service needs IPv6 to run with the default configuration. …

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look-out-vmware-ubuntu-15-10-is-released-into-the-wild-what-this-means-for-vmware-monitoring

Look Out, VMware: Ubuntu 15.10 is Released Into the Wild & What This Means for VMware Monitoring Canonical released Ubuntu 15.10 in October of 2015. Nicknamed Wiley Werewolf, it is available for download, and comes with a number of new features and improvements. It comes with Linux Kernel 4.2, which itself features a number of …

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5-native-cloud-initiatives-that-prove-vmware-is-the-dominant-force-in-virtualization-and-container-technology

Cloud-native computing is making a powerful impact on the world of IT development, and VMware is one of the main reasons why. A new group devoted to cloud-native computing was just announced in December of last year. VMware has also made some significant cloud-native investments that prove they are the dominant force in virtualization and …

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3-experts-give-their-ideas-insight-on-vmware-vsan-and-hyper-convergence

3 Experts Give Their Ideas & Insight on VMware VSAN and Hyper-Convergence Hyper-Convergence is the practice of combining the storage and compute features of an application into the same chassis. The premise behind Hyper-Convergence is that it will be easier to scale up operations. Not surprisingly, it’s been a hotly debated subject, some advocating the …

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Use Case - Tamper-resistant Clinical Trials

Goal:

Blockchain PoCs were unsuccessful due to complexity and lack of developers.

Still the goal of data immutability as well as client verification is a crucial. Furthermore, the system needs to be easy to use and operate (allowing backup, maintenance windows aso.).

Implementation:

immudb is running in different datacenters across the globe. All clinical trial information is stored in immudb either as transactions or the pdf documents as a whole.

Having that single source of truth with versioned, timestamped, and cryptographically verifiable records, enables a whole new way of transparency and trust.

Use Case - Finance

Goal:

Store the source data, the decision and the rule base for financial support from governments timestamped, verifiable.

A very important functionality is the ability to compare the historic decision (based on the past rulebase) with the rulebase at a different date. Fully cryptographic verifiable Time Travel queries are required to be able to achieve that comparison.

Implementation:

While the source data, rulebase and the documented decision are stored in verifiable Blobs in immudb, the transaction is stored using the relational layer of immudb.

That allows the use of immudb’s time travel capabilities to retrieve verified historic data and recalculate with the most recent rulebase.

Use Case - eCommerce and NFT marketplace

Goal:

No matter if it’s an eCommerce platform or NFT marketplace, the goals are similar:

  • High amount of transactions (potentially millions a second)
  • Ability to read and write multiple records within one transaction
  • prevent overwrite or updates on transactions
  • comply with regulations (PCI, GDPR, …)


Implementation:

immudb is typically scaled out using Hyperscaler (i. e. AWS, Google Cloud, Microsoft Azure) distributed across the Globe. Auditors are also distributed to track the verification proof over time. Additionally, the shop or marketplace applications store immudb cryptographic state information. That high level of integrity and tamper-evidence while maintaining a very high transaction speed is key for companies to chose immudb.

Use Case - IoT Sensor Data

Goal:

IoT sensor data received by devices collecting environment data needs to be stored locally in a cryptographically verifiable manner until the data is transferred to a central datacenter. The data integrity needs to be verifiable at any given point in time and while in transit.

Implementation:

immudb runs embedded on the IoT device itself and is consistently audited by external probes. The data transfer to audit is minimal and works even with minimum bandwidth and unreliable connections.

Whenever the IoT devices are connected to a high bandwidth, the data transfer happens to a data center (large immudb deployment) and the source and destination date integrity is fully verified.

Use Case - DevOps Evidence

Goal:

CI/CD and application build logs need to be stored auditable and tamper-evident.
A very high Performance is required as the system should not slow down any build process.
Scalability is key as billions of artifacts are expected within the next years.
Next to a possibility of integrity validation, data needs to be retrievable by pipeline job id or digital asset checksum.

Implementation:

As part of the CI/CD audit functionality, data is stored within immudb using the Key/Value functionality. Key is either the CI/CD job id (i. e. Jenkins or GitLab) or the checksum of the resulting build or container image.

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