Category: Linux

  • OrangePi 5b emmc support

    Armbian image from by default thinks that the board is 5, not 5b, so no nice emmc storage for you! I thought that it’s kind of general issue with the kernel, but all it took is to change fdtfile to rockchip/rk3588s-orangepi-5b.dtb in the /boot/armbianEnv.txt. Now my /var with all K3S and rancher stuff is…

  • Current state of my K8S

    Works: To do:

  • Nexcloud is getting better

    Nexcloud is getting better

    It can do really neat things, as it turned out!

  • Cable-managed the K3S this blog hosted on

    Cable-managed the K3S this blog hosted on

    Looks nicer! I’d used 200 Wt power supply so it wouldn’t struggle and maybe I would add some more hardware from the closet with router and stuff to it.

  • Turris MOX (openwrt) Prometheus exporter

    It works! The exported could be downloaded from here: GitHub – prometheus/collectd_exporter: A server that accepts collectd stats via HTTP POST and exports them via HTTP for Prometheus consumption. To build it just install golang and gcc, in case of the “/usr/bin/ld: cannot find -lpthread” error just create an empty AR archive somewhere in the…

  • Moved to CentOS Stream 9

    Moved to CentOS Stream 9. I wanted to move my cloud disc and mail here too, but it turned out to be too expensive. So, I’d stay at the Office 356 for now. Made some Ansible play books in process.

  • Spam to

    Some open relay spams a lot with this kind of messages: Delivered-To: Received: by 2002:aa6:c2c8:0:b0:16a:1e8a:2c54 with SMTP id i8csp1735690lkp; Fri, 17 Dec 2021 09:01:32 -0800 (PST) X-Google-Smtp-Source: ABdhPJwYX2tMoVU+eJjTP1qslWMcUikk61IbaTmPrak3WWvb1fbofSlY0ftgYqX9WBAiH5rL/PIy X-Received: by 2002:a2e:bf1e:: with SMTP id c30mr3535718ljr.408.1639760491902; Fri, 17 Dec 2021 09:01:31 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1639760491; cv=none;; s=arc-20160816; b=Pp3pD2GTGMOH8vYn+zs+n31Y3/RsUhm8SrzMWHMf4MAqnnojNhRemwUANtHgYhjd/9 M9F2iuIpJkYkdd5SqyzP2623PIWs8ahgMoEWWU5s9exmqAhICUtDc0BODLwWpzw1pbYi +XoA0yQkL79W+wWdCnn2D+EGR1LCr2dxnrH4A3OgsTTXG573/yQ3fAxMvT/qdSTCHf+X VtaHKSEHgU5vkfo20EF6hKF9h46d/KyaMspGtr4XhVeUPgvl3EWf/LilXOnbcctYH+q7 Q2ys7jcbeyltrTxwhVhJAy0gUu2ozZvSYh1SqR5MeWSbIb5/ClGinRy5cg5nimLi2jig…

  • Postfix and greylisting

    Spam became a noticeable threat for the mail servers many years ago. No servers today could be running without being hardened against the spam: according to some reports up to 75% of all the email traffic is spam. It’s noticeable from network capacity, hardware and electricity consumption even if you run a small company mail…

  • Postfix mail server with DKIM

    Installation and configuration of the mail server (Mail Transfer Agent, MTA) is one of the typical tasks any system administrator faces. Here we will cover the task and by the end of the article will have CentOS 7 with Postfix mail server that listens to he 25 port (SMTP) and delivers messages for the selected…

  • Moved to Hetzner and CentOS 8

    Turns out I had lost my keys to the Oracle Cloud and the Oracle Cloud lost my PTR record somehow, so the Gmail started to junk and bounce my mail. I decided to go for a (who’s my home provider) VPS, but they had 8GB SSD as an option for a small host, which…