Proxmox fully automated! From ClickOps to Code: Automated. Audited. Revisioned. Repeatable.
Starting from the base by automating:
- Cluster initialization
- Cluster join
- Storage Integration
- Proxmox Backup Server Integration
- SDN Networks (different ones for pros/dev)
- Guest Resources utilizing the cluster infrastructure
#Proxmox #PVE #Pbs #ProxmoxBackupServer #opensource #Automation #Ansible #python #devops #terraform #cicd #pipeline #cluster #nfs #iscsi
2020 December 16
Sonified: The Matter of the Bullet Cluster
* Image Credit: X-ray: NASA/CXC/SAO
* Optical: NASA/STScI, Magellan/U.Arizona
* Lensing Map: NASA/STScI, ESO WFI, Magellan/U.Arizona
* Sonification: NASA/CXC/SAO/K.Arcand, SYSTEM Sounds (M. Russo, A. Santaguida)
Explanation:
What's the matter with the Bullet Cluster? This massive cluster of galaxies (1E 0657-558) creates gravitational lens distortions of background galaxies in a way that has been interpreted as strong evidence for the leading theory: that dark matter exists within. Different analyses, though, indicate that a less popular alternative -- modifying gravity-- could explain cluster dynamics without dark matter, and provide a more likely progenitor scenario as well. Currently, the two scientific hypotheses are competing to explain the observations: it's invisible matter versus amended gravity. The duel is dramatic as a clear Bullet-proof example of dark matter would shatter the simplicity of modified gravity theories. The featured sonified image is a Hubble/Chandra/Magellan composite with red depicting the X-rays emitted by hot gas, and blue depicting the suggested separated dark matter distribution. The sonification assigns low tones to dark matter, mid-range frequencies to visible light, and high tones to X-rays. The battle over the matter in the Bullet cluster is likely to continue as more observations, computer simulations, and analyses are completed.
2025 July 26
Globular Cluster Omega Centauri
* Image Credit & Copyright: Data acquisition - SkyFlux Team, Processing - Leo Shatz
https://app.astrobin.com/u/spinlock#gallery
Explanation:
Globular star cluster Omega Centauri packs about 10 million stars much older than the Sun into a volume some 150 light-years in diameter. Also known as NGC 5139, at a distance of 15,000 light-years it's the largest and brightest of 200 or so known globular clusters that roam the halo of our Milky Way galaxy. Though most star clusters consist of stars with the same age and composition, the enigmatic Omega Cen exhibits the presence of different stellar populations with a spread of ages and chemical abundances. In fact, Omega Cen may be the remnant core of a small galaxy merging with the Milky Way. With a yellowish hue, Omega Centauri's red giant stars are easy to pick out in this sharp telescopic view. A two-decade-long exploration of the dense star cluster with the Hubble Space Telescope has revealed evidence for a massive black hole near the center of Omega Centauri.
https://app.astrobin.com/i/7na4mz
https://ui.adsabs.harvard.edu/abs/2021A%26A...653L...8L/abstract
https://en.wikipedia.org/wiki/Globular_cluster
https://earthsky.org/clusters-nebulae-galaxies/omega-centauri-milky-ways-prize-star-cluster/
https://esahubble.org/news/heic0809/
https://apod.nasa.gov/apod/ap250726.html
About Intermediate-Mass Black Hole in Omega Centauri:
https://defcon.social/@grobi/114918173169808417
Da wir immer mehr #Container Zeug uns #Logs haben, suche ich was besseres als #Graylog. Pro RZ haben wir rund 60GB/Tag und das wachsend. Unser 5 Node #ELK #Cluster frisst uns die Haare vom Kopf. Die Logs müssen in der Regel 1y aufbewahrt werden.
Bin auf #grafana #loki gestoßen was wirklich nett klingt, aber nach dem Lesen
bin ich mir nicht mehr sicher. Wir haben tatsächlich nicht selten die Nadel im 1y Heuhaufen zu finden.
Okay this is super cool to see ^^ https://www.youtube.com/watch?v=HRfbQJ6FdF0
2023 January 29
Barnard 68: Dark Molecular Cloud
* Image Credit: FORS Team, 8.2-meter VLT Antu, ESO
https://www.eso.org/projects/vlt/
https://www.eso.org/sci/facilities/paranal/instruments/fors.html
https://www.eso.org/public/
Explanation:
Where did all the stars go? What used to be considered a hole in the sky is now known to astronomers as a dark molecular cloud. Here, a high concentration of dust and molecular gas absorb practically all the visible light emitted from background stars. The eerily dark surroundings help make the interiors of molecular clouds some of the coldest and most isolated places in the universe. One of the most notable of these dark absorption nebulae is a cloud toward the constellation Ophiuchus known as Barnard 68, pictured here. That no stars are visible in the center indicates that Barnard 68 is relatively nearby, with measurements placing it about 500 light-years away and half a light-year across. It is not known exactly how molecular clouds like Barnard 68 form, but it is known that these clouds are themselves likely places for new stars to form. In fact, Barnard 68 itself has been found likely to collapse and form a new star system. It is possible to look right through the cloud in infrared light.
https://www.eso.org/public/news/eso0102/
https://en.wikipedia.org/wiki/Barnard_68
https://en.wikipedia.org/wiki/Molecule
https://apod.nasa.gov/apod/ap030706.html
https://apod.nasa.gov/apod/ap970430.html
https://ui.adsabs.harvard.edu/abs/2009ApJ...695.1308B/abstract
https://www.eso.org/public/videos/eso9934a/
https://www.eso.org/public/news/eso9934/
https://astronomy.swin.edu.au/cosmos/m/Molecular+Cloud
https://apod.nasa.gov/apod/ap201206.html
https://apod.nasa.gov/apod/ap221020.html
https://science.nasa.gov/universe/stars/
https://starchild.gsfc.nasa.gov/docs/StarChild/questions/question19.html
https://apod.nasa.gov/apod/dark_nebulae.html
https://en.wikipedia.org/wiki/Ophiuchus
Russia targets Ukraine’s cities with cluster munitions, raising #civilian deaths
Amid stalled peace talks, #Russia's increasingly attacking #Ukrainian #cities with #ClusterMunitions, banned for indiscriminate damage to #civilians
Civilian casualties in #Ukraine in 2025 rose 37% compared with same period last year, mostly due to #Russia’s use of #long-range explosive weapons — including #cluster munitions in densely populated cities
Webb and Chandra Image of Bullet Cluster Maps Invisible Dark Matter https://petapixel.com/2025/07/02/webb-and-chandra-image-of-bullet-cluster-maps-invisible-dark-matter/ #jameswebbspacetelescope #chandraxrayobservatory #bulletcluster #galaxycluster #cluster #Space #News #jwst #webb
The current #HeatWave is fun to see how it impacts my #kubernetes #cluster #node #CPU #temperature. The moment I come home after dealing with train issues and and crack a window open is clearly visible in the graph:
Jukebox Friday Night on Friday 20 June and it's Matariki, the Māori New Year in Aotearoa New Zealand.
The theme is "Reflect And Renew", so let's try a song with lines about going around in circles (moving forward and starting over):
"Then in a certain moment
I lose control and at last I am part of the machinery
(The belldog) Where are you?
And the light disappears
As the world makes its circles through the sky …"
Brian Eno and Cluster ( Dieter Moebius, Hans-Joachim Roedelius), "The Belldog" (1978)
In the capital’s #Nyvky neighborhood, emergency workers are now finding #ClusterMunition parts
Another clear sign of the #genocide #Russia is committing against Ukrainians
#Cluster #munitions are banned under international law by more than 100 countries due to their indiscriminate nature & long-term threat they pose to #civilians, especially as munitions remain hidden in #ResidentialAreas
Recently I've combined various functions which I've been using in other projects (e.g. my personal PKM toolchain) and published them as new library https://thi.ng/text-analysis for better re-use:
- customizable, composable & extensible tokenization (transducer based)
- ngram generation
- Porter-stemming & stopword removal
- vocabulary (bi-directional index) creation
- dense & sparse multi-hot vector encoding/decoding
- histograms (incl. sorted versions)
- tf-idf (term frequency & inverse document frequency), multiple strategies
- k-means clustering (with k-means++ initialization & customizable distance metrics)
- similarity/distance functions (dense & sparse versions)
- central terms extraction
The attached code example (also in the project readme) uses this package to creeate a clustering of all ~210 #ThingUmbrella packages, based on their assigned tags/keywords...
The library is not intended to be a full-blown NLP solution, but I keep on finding myself running into these functions/concepts quite often, and maybe you'll find them useful too...
#ReleaseTuesday — New version of https://thi.ng/tsne with ~15-20% better performance[1] due to avoiding repeated internal allocations and skipping gradient updates where unnecessary...
[1] Benchmarked with multiple datasets of ~750 items, each with 192 dimensions (now ~165ms @ MBA M1, 2020)...
How do we know that globular star clusters are the oldest structures of our universe? The answer is surprisingly fascinating.
Picture number 1 is my latest capture of the largest known globular cluster in the Northern Hemisphere: M13, which I believe contains approximately half a million stars.
Picture number 2 features pictures of 0.9 m Kitt Peak's Observatory telescope, together with images taken by the Hubble Space Telescope of another glob cluster: M4.
Well, it turns out that the HST could resolve, after many hours of exposures, the white dwarfs within the latter cluster. Not only that, but it could also analyze them using a technique known as spectroscopy, and determine in this way that these stars are approximately 12 to 13 billion years old.
This is not only useful for determining the cluster's age, but also for pinpointing the age of the entire universe. So, these tiny "insignificant" star remnants did us a big favor.
From Wikipedia, the free encyclopedia
NGC 6366
NGC 6366 is a globular cluster located in the constellation Ophiuchus. It is designated as XI in the Shapley–Sawyer Concentration Class and was discovered by the German astronomer Friedrich August Theodor Winnecke on 12 April 1860. It is at a distance of 11,700 light years away from Earth.
NGC 6366 is similar in composition to M 71 or NGC 6342. It is metal-rich for a globular cluster, and all of its stars appears to have formed in the same epoch.
Color rendering is done by Aladin-software (2000A&AS..143...33B.)
Based on observations made with the NASA/ESA Hubble Space Telescope, and obtained from the Hubble Legacy Archive, which is a collaboration between the Space Telescope Science Institute (STScI/NASA), the Space Telescope European Coordinating Facility (ST-ECF/ESA) and the Canadian Astronomy Data Centre (CADC/NRC/CSA).
FYI: https://iopscience.iop.org/article/10.1088/0004-6256/137/1/246
#space #cluster #milkyway #astrophotography #photography #science #nature #NASA #ESA hubble #education
TOPIC>
NGC 6366 vs 47 Ophiuchi
* Image Credit & Copyright: Massimo Di Fusco
https://app.astrobin.com/u/massimo.difusco#gallery
https://www.astronomy.com/picture-of-the-day/photo/cloak-of-the-owl/
https://www.optolong.com/cms/document/detail/id/418.html
https://www.optolong.com/cms/document/detail/id/431.html
Explanation:
Most globular star clusters roam the halo of our Milky Way galaxy, but globular cluster NGC 6366 lies close to the galactic plane. About 12,000 light-years away toward the constellation Ophiuchus, the cluster's starlight is dimmed and reddened by the Milky Way's interstellar dust when viewed from planet Earth. As a result, the stars of NGC 6366 look almost golden in this telescopic scene, especially when seen next to relatively bright, bluish, and nearby star 47 Ophiuchi. Compared to the hundred thousand stars or so gravitationally bound in distant NGC 6366, 47 Oph itself is a binary star system a mere 100 light-years away. Still, the co-orbiting stars of 47 Oph are too close together to be individually distinguished in the image.
https://ui.adsabs.harvard.edu/abs/2015A%26A...584A..59S/abstract
https://ui.adsabs.harvard.edu/abs/2015AJ....149..110W/abstract
https://science.nasa.gov/universe/star-clusters-inside-the-universes-stellar-collections/#hds-sidebar-nav-1
https://apod.nasa.gov/apod/ap250512.html
https://app.astrobin.com/u/massimo.difusco#gallery
There should be a platform l that would let me aggregate all my PC/ARM/GPUs from janky hardware into a mighty compute cluster that can run a VM to do mad scientist things.
It would be kinda funny to run little disk less daemons that would write to could storage somewhere cloudy and use the compute to run an android desktop. You could then run high performance apps, including a terminal.
Say hello to our "new" free hardware 80-core cluster – these are Dell/Wyse 3040 thin clients (quadcore Z8350 Atom, 2 GB RAM, 8 GB eMMC, 1 GB Ethernet, only 10x10x3 cm^3 in size) which will be used for student experiments with distributed operating systems. Maybe we can revive Amoeba and build a small Plan9 cluster...
Load Balancing in #Proxmox Clusters? #ProxLB just got released in version 1.1.2. Let's make the switch to #opensource together!
Now, focusing on power management for nodes (like DPM) & auto node security patching :)
Is #Incus the #Proxmox Killer? A Bold New Approach to Lightweight Virtualization.
In my latest blog post we install, configure, create a cluster and place a guest.
#virtualization #vm #virtualmachines #linux #lxc #opensource #cluster #ha #homelab #homrlabs #debian #RockyLinux
