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  • OCI Autonomous Database: Change MEDIUM Service Concurrency Limit

    calendar Jan 27, 2022 · 1 min read
     en knowledgebase
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    OCI Autonomous Database: Change MEDIUM Service Concurrency Limit

    On Oracle Autonomous Database (Oracle Cloud DB service), the consumer groups of the predefined service names provide different levels of performance and concurrency.

    How do you tune this limits?

    1. From the Autonomous Database details page, click Service Console.
    2. On the Service Console click Administration.
    3. Click Set Resource Management Rules.
    4. On the Set Resource Management Rules page, select the Concurrency limit tab
      Description of adb_console_set_concurrency_limit.png follows

    For more information see the Oracle Manual

  • K8s done right Part 2: Istio service Mesh

    calendar Jan 24, 2022 · 1 min read
     devops en k8s-done-right  · docker docker-compose k8s
     ·
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    K8s done right Part 2: Istio service Mesh

    In this second article, I suggest to explore further two simple helm chart for getting a bit more inside K8s.

     

    Grafana

    Loki is a horizontally-scalable, highly-available, multi-tenant log aggregation system inspired by Prometheus. It is designed to be very cost effective and easy to operate. It does not index the contents of the logs, but rather a set of labels for each log stream.

    The Loki project was started at Grafana Labs in 2018, and announced at KubeCon Seattle. Loki is released under the AGPLv3 license

    To install Grafana+Loki follow the instruction depicted here: the install will teach you how to use helm charts dependency too, so please take time to download the loki chart and study it


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  • Debian 11 Bullseye

    calendar Jan 21, 2022 · 2 min read
     it lettere-a-mia-figlia  · debian linux relax
     ·
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    "Ora bevo la pozione magica, divento Asterix e ti picchio!"

    Dopo i miei dubbi su Ubuntu 20, ho installato a casa una distribuzione Debian 11 e riporto qui le mie prime impressioni.

    Debian è una distribuzione molto solida, ma non avevo mai avuto modo di provarla in modo continuativo: ai tempi dell’università preferii Slackware e RedHat.


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  • RTM/Z80

    calendar Jan 20, 2022 · 1 min read
     en retro-computing  · z80
     ·
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    RTM/Z80 is a multitasking kernel, built for Z80 based computers, written in Z80 assembly language, providing its users with an Application Programming Interface (API) accessible from programs written in the C language and the Z80 assembly language.


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  • Slackware lives!

    calendar Jan 14, 2022 · 1 min read
     en
     ·
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    Slackware was my first real distro in 1995 and I am happy it is still alive and kicking. It was a floppy disk based distribution. So you end up filling about 20 disks (!) of 1.44MB to install and boot Linux on your old i386 with 1MB of RAM and 40MB of HardDisk.  After some upgrade I finally got a PC with 8MB RAM and 500MB hard disk (and yes, it was a lot of space for that times!).


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  • Piccole pentastellate riflessioni

    calendar Jan 12, 2022 · 2 min read
     it  · m5s politica
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    C’è un bellissimo pezzo di Luca Sofri, che ci fa riflettere sulla mirabolante idea della democrazia diretta, tanto cara al M5S, e della cui zoippicante implementazione sofware noi siamo stati dubbiosi in tempi non sospetti.

    Riporto dal pezzo di Sofri, che a sua volta cita due importantissimi quotidiani, dei virgolettati da una chat interna del M5S, che sono con tutta probabilità veri, perché provienenti da moltissime fonti diverse con il medesimo significato


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  • 8 Bit computers: 2022 Edition!

    calendar Jan 1, 2022 · 1 min read
     books en retro-computing  · 6502 book c64 retro-computing vic20
     ·
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    Due to COVID19 pandemic, I and my family was forced in our home. So I revamped my 8bit computer book, with a new look and a nice search engine.

  • Log4jShell

    calendar Dec 20, 2021 · 1 min read
     en knowledgebase software
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    Log4jShell

    Log4jShell vulnerability

    1. Kasperky article
    2. https://www.lunasec.io/docs/blog/log4j-zero-day-update-on-cve-2021-45046/ with the following "news":If you have previously used LOG4J_FORMAT_MSG_NO_LOOKUPS to mitigate the log4shell vulnerability, in certain conditions this will not be sufficient to protect your code from RCE. Refer to our mitigation guide for additional steps you can take to remediate the impact of Log4Shell
    3. Apache group released two fix in short delay, after  the second fix was found vulnerable to other attacks, a third fix (2.17.0) was released.
     
  • Il problema delle interfacce è che faccia hanno

    calendar Nov 19, 2021 · 2 min read
     humor it  · humor ideas
     ·
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    Picasso, come architetto sarebbe stato fallimentare, per via delle linee non proprio diritte, ma come pittore spacca. G.Giorgi

    Si fa presto a dire interfaccia.
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  • Semplici animazioni con il Commodore16

    calendar Nov 15, 2021 · 3 min read
     it  · c64 vic20
     ·
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    La cosa che ho sempre apprezzato dei computer Commodore era la loro immediatezza. Grazie ai caratteri grafici impressi sui tasti, era possibile scrivere piccoli e gradevoli programmi  con poco sforzo.

    In questo articolo vi mostro come fare delle piccole animazioni , usando il Commodore 16.


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  • Commodore 16: the misundestood, l’incompreso

    calendar Nov 11, 2021 · 2 min read
     it lettere-a-mia-figlia retro-computing  · c64 vic20
     ·
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    Nel 1984, dopo il successo del C/64, la Commodore lanciò sul mercato il Plus4 ed il Commdore16, due macchine quasi identiche che si differenziavano per il quantitativo di RAM a bordo e per la dotazione del software in ROM.

    Il Commodore 16 idealmente doveva soppiantare il Vic20, aveva 16 KB di RAM e il Basic 3.5, notevolmente più comodo del BasicV2 della coppia Vic20, C/64. La CPU era anche il 75% più veloce rispetto ai predecessori, ma il chip grafico era incompatibile con il C/64 e il C/16 non disponeva né di Sprite né della profondità sonora del SID:


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  • Removing sensitive data from your github repo ex-post

    calendar Nov 11, 2021 · 1 min read
     en  · fix git github security
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    As you know, sometime Internet is a bad place (and not, I am not talking about Facebook :)

    There are “bots” which scans github repo in search of an AWS Keys or other similar api keys, mostly for installing spam bots and so on. You should not version it but… what can you do if your teammate did it already?


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  • 2021 PIHole Stats and hints

    calendar Nov 6, 2021 · 1 min read
     en freedom  · pihole
     ·
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    This year PiHole protected by home, with an average of 15% of blocked DNS access, every day.

    I got an  useful article on additional ads list: https://jussiroine.com/2021/07/goodbye-telemetry-and-ads-running-pi-hole-in-a-home-network/

    Also at the end of October CloudFlare released a new DNS for protecting family from malaware and adults-only content, called “Cloudflare’s 1.1.1.1 for Families” and you can find here a simple guide on how to install it.


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  • Abbonarsi al post.it

    calendar Nov 1, 2021 · 2 min read
     it
     ·
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    Spinto da “Morning”, il podcast mattutino di Francesco Costa, ho deciso di abbonarmi anche io a ilpost.it.

    Ammetto di averci riflettuto a lungo: il problema al giorno d’oggi non è trovare informazioni ma la qualità di questa informazione. È triste osservare che anche giornali molto ben strutturati (Il Corriere & Repubblica), hanno un’impostazione lontana anni luce dalla stampa anglosassone. È sufficiente leggere gli articoli pubblicati da Internazionale tutte le settimane per rendersene conto.


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  • HyperV Machine Export

    calendar Oct 28, 2021 · 1 min read
     en knowledgebase
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    HyperV Machine Export
    1. Shutdown VM and compress the compact the disks
    2. Check if you have enough space: you need more or less the space of the VM disks+ minimal RAM configured
    3. From your Hyper-V host, run PowerShell as an administrator and then run something like: GET-VM This will display all the VMs running on the current host.
    4. Then run:
      $ExportPath = “C:\\Exports”
      Export-VM -Name “BoxNameFromGetVM Step3” -Path $ExportPath
       
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