Category: Server

Matrix

not the movie, but the messenger – self-hosted set up and running Infos: https://matrix.org/ also: samuels-blog.de App: https://fluffychat.im/ Contact me @daniel:matrix.daniel-purucker.com

Wireguard

There (are some affiliate) needs a VPN-server in the near future (roadwarrior… not by choice).As my experiences with Wireguard on the EdgeRouterX were not very successful: I’l give it another try on Proxmox. Here we go… – as Wireguard is now part of the kernel it’s super easy (Virt. Maschine, no Container on Proxmox… due to Kernel!). see: https://www.cyberciti.biz/faq/ubuntu-20-04-set-up-wireguard-vpn-server/ and:...

HANA 2.0 & Log4J @Home

Monday to Friday: Log4J @Work Weekend: Log4J @Home 🙂 HANA 2.0: HANA XSA log4j CVE-2021-44228 Ubiquity: UniFi Controller security concern (zero-day Log4j exploit) Docker: https://www.docker.com/blog/apache-log4j-2-cve-2021-44228/ Eclipse https://wiki.eclipse.org/Eclipse_and_log4j2_vulnerability_(CVE-2021-44228) Full List Github – @SwitHak SwitHak/20211210-TLP-WHITE_LOG4J.md Other interesting stuff: https://www.cisecurity.org/log4j-zero-day-vulnerability-response/ https://log4jmemes.com/

SAP HANA 2.0 express edition on Proxmox

I finally finished the blog-post on the HANA 2.0 express edition installation on Proxmox. see SAP Community to read it Can’t wait to do the first release-upgrade 😉

Backup-script for TrueNas

As described in the previous post, i modified the awesome script from Jörg Binnewald @ https://esc-now.de/ to suit my needs. The script is automatically triggered, when the backup-HDD is attached to the TrueNAS-Server. The Datasets (and child-Datasets) are incrementally backed-up via send/receive (ZFS feature). The source code can be found here: script: https://github.com/dapuru/zfsbackup A devd-rule (can also be found at...

Data Backup Strategy for ZFS-Pool on TrueNas

In theory there is one solution to backup a TrueNas Data-Share to an external hard disc: Fiddle with send/receive (see below) In practice, there are different options: 1) use syncoid 2) use TrueNas “local replication” 3) use a script with send/receive 4) use rsync Options 1-3 expect ZFS on the target volume, option 4 works with any filesystem. Should i...

Ubiquity Edge Router X and Wireguard

Wireguard is some really cool stuff. However i still did not get it to work on the Edge Router X – shame on me.. Keeping this for later.. https://github.com/WireGuard/wireguard-vyatta-ubnt https://www.erianna.com/wireguard-ubiquity-edgeos/ https://neontom.com/blog/wireguard-on-edgeos/

Howto – LXC in Proxmox

## Things about LXC – LXC is not as separated as VMs – LXC only emulates the OS (not the hardware layer) which makes is fast – Techniques used behind the scenes are cgroups and namespaces – …thus only Linux guests are possible – LXC emulates an OS, whereas “Docker containers are restricted to a single application by design.” (“Container...

ZFS – Good to know

## Links:https://ruvi-d.medium.com/zfs-on-ubuntu-20-04-lts-53728f3bc9e9 https://wiki.ubuntu.com/Kernel/Reference/ZFS https://jrs-s.net/2016/09/15/zfs-snapshots-and-cold-storage/ https://didrocks.fr/2020/05/26/zfs-focus-on-ubuntu-20.04-lts-zsys-general-presentation/ https://wiki.archlinux.org/index.php/ZFS ## on Linux install ZFS on Linux > sudo apt install zfsutils-linux ## Commands: ### List the Pools > zpool list ### Unmount Pool/Dataset > zfs unmount <pool>/<dataset> ### Show parameters of pool > zpool get all <pool> ### List the DataSets > zfs list ### Create a Pool (easy/test) > zpool create -f...