Ivan Melnyk

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  • Make a Bridge of your Synology Ethernet ports

    Mar 7, 2025

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    by

    Ivan Melnyk
    in Synology NAS

    If you have Synology NAS with 2 (or more) Ethernet ports (like mine, DS916+), you can pair them in the Bridge. In the following steps I will show you how to bridge your second Ethernet port (LAN 2, or eth1) to your first Ethernet port (LAN 1, or eth0), so LAN 1 will be your…

  • Change the Boot Kernel Version in Linux

    Apr 4, 2024

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    by

    Ivan Melnyk
    in GRUB

    Sometimes when you upgrade your Linux (Ubuntu/Debian) the Kernel may be updated too and it can cause some issues, like sound card stopped working, or some other server utilities, for example ocfs2/o2cb. In this post you will find how to switch your kernel version to the previous one or back to default one.

  • SSH Key Pair for Secure Connection

    Apr 3, 2024

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    by

    Ivan Melnyk
    in Good to know, Security

    This post will show you how to generate the new SSH keys for your GitHub, GitLab, BitBucket repository or remote/web server, for example, to be able to connect to your remote/web server securely, or git checkout using the SSH key and not username/password.

  • Curl SSL Certificates problem

    Apr 2, 2024

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    by

    Ivan Melnyk
    in Curl, Good to know

    If you are facing an issue with curl: (60) SSL certificate problem: unable to get local issuer certificate, this article will provide possible solution.

  • Cloudflared Client on Docker Compose

    Cloudflared Client on Docker Compose

    Mar 30, 2024

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    by

    Ivan Melnyk
    in Cloudflare, Docker

    When you create a Zero Trust tunnel in Cloudflare, the simplest and easiest way to install the tunnel client on your machine is to run the command Cloudflare provided to you on the tunnel page. But if you need to run the Cloudflared client as a docker container, this article will help you to make…

  • Free Mail Server on OCI – Docker-Mailserver

    Free Mail Server on OCI – Docker-Mailserver

    Mar 27, 2024

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    by

    Ivan Melnyk
    in Mail Server, Oracle Cloud Infrastructure (OCI)

    Free Mail Server on OCI (Oracle Cloud Infrastructure), using the Ubuntu OS, Docker with Compose and Docker Mailserver containerized image. Docker-Mailserver.

  • Free Mail Server on OCI – Docker, Cron, Certbot

    Free Mail Server on OCI – Docker, Cron, Certbot

    Mar 27, 2024

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    by

    Ivan Melnyk
    in Mail Server, Oracle Cloud Infrastructure (OCI)

    Free Mail Server on OCI (Oracle Cloud Infrastructure), using the Ubuntu OS, Docker with Compose and Docker Mailserver containerized image. Docker, Cron, Certbot.

  • Free Mail Server on OCI – OCFS2

    Free Mail Server on OCI – OCFS2

    Mar 27, 2024

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    by

    Ivan Melnyk
    in Mail Server, Oracle Cloud Infrastructure (OCI)

    Free Mail Server on OCI (Oracle Cloud Infrastructure), using the Ubuntu OS, Docker with Compose and Docker Mailserver containerized image. OCFS2.

  • Free Mail Server on OCI – Swapfile

    Free Mail Server on OCI – Swapfile

    Mar 27, 2024

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    by

    Ivan Melnyk
    in Mail Server, Oracle Cloud Infrastructure (OCI)

    Free Mail Server on OCI (Oracle Cloud Infrastructure), using the Ubuntu OS, Docker with Compose and Docker Mailserver containerized image. Swapfile.

  • Free Mail Server on OCI – Compute Instance

    Free Mail Server on OCI – Compute Instance

    Mar 27, 2024

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    by

    Ivan Melnyk
    in Mail Server, Oracle Cloud Infrastructure (OCI)

    Free Mail Server on OCI (Oracle Cloud Infrastructure), using the Ubuntu OS, Docker with Compose and Docker Mailserver containerized image. Compute Instance.

  • Free Mail Server on OCI – Virtual Cloud Network

    Free Mail Server on OCI – Virtual Cloud Network

    Mar 27, 2024

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    by

    Ivan Melnyk
    in Mail Server, Oracle Cloud Infrastructure (OCI)

    Free Mail Server on OCI (Oracle Cloud Infrastructure), using the Ubuntu OS, Docker with Compose and Docker Mailserver containerized image. Virtual Cloud Network.

  • Free Mail Server on OCI – Data Block Volume

    Free Mail Server on OCI – Data Block Volume

    Mar 27, 2024

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    by

    Ivan Melnyk
    in Mail Server, Oracle Cloud Infrastructure (OCI)

    Free Mail Server on OCI (Oracle Cloud Infrastructure), using the Ubuntu OS, Docker with Compose and Docker Mailserver containerized image. Data Block Volume.

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