Category: Fedora

Fedora - unlock LUKS full disk encrypted system using USB stick

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Follow below steps to enable unlocking LUKS full disk encrypted system using key file stored on USB stick Format USB key with FAT32 filesystem. Generate random keyfile: dd if=/dev/urandom of=/path/to/usbdisk/keyfile bs=4096 count=1 Add key to luks volume: cryptsetup luksAddKey /dev/sda6 /path/to/usbdisk/keyfile Check USB partition disk UUID: lsblk /dev/sdb1 -o NAME,UUID XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX - UUID of LUKS… Continue reading Fedora - unlock LUKS full disk encrypted system using USB stick →

Fedora 36 - fix for issue with new kernel installation

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Sympthons: On UEFI Fedora 36 machines with long upgrade history (for instance starting from F25) you can encounter problem that after "dnf update kernel-core" new kernels are not being installed. Reason: When directory /boot/efi// is present, system is trying to install new kernel images into /boot/efi// instead of /boot/, which issues with /boot/efi/ overflow. Resoloution:… Continue reading Fedora 36 - fix for issue with new kernel installation →

Docker 20.10 fails to start on CentOS 8 and Fedora 33

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After upgrading Docker to version 20.10 on CentOS 8 and Fedora 33 we can see that it fails to start docker.service. In docker.service logs and firewalld.service logs we can see following message: ERROR: ZONE_CONFLICT: 'docker0' already bound to a zone Solution for this issue: sudo firewall-cmd --zone=trusted --remove-interface=docker0 sudo firewall-cmd --zone=trusted --remove-interface=docker0 --permanent

Deploy Nextcloud containerized service using Docker and docker-compose

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Template for deploying Nextcloud containerized service using Docker and docker-compose, you can use in on both x86_64 and ARM (32/64bit) architecture: https://github.com/openterprise/docker/blob/master/docker-compose-nextcloud.yml This template deploys Nextcloud with following setup: • application: Nextcloud • application server: Apache + PHP • database: MariaDB / PostgreSQL • cache: Redis • scheduler: crontab Requirements: • Docker • docker-compose

Fedora 33 - make DNS (systemd-resolved) working with NetworkManager's ForitSSL VPN connections

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In Fedora 33 there is a systemd-resolved service enabled by default. Use following steps to make DSN working after establishing FortiSSL VPN connection using Network Manager (using NetworkManager-fortisslvpn-gnome plugin). Assuming that "ppp0" is you virtual network interface for VPN connection, you can set X.X.X.X and Y.Y.Y.Y as DNS servers: resolvectl dns ppp0 X.X.X.X Y.Y.Y.Y Add… Continue reading Fedora 33 - make DNS (systemd-resolved) working with NetworkManager's ForitSSL VPN connections →