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Add Datastore to PBS

Proxmox Proxmox Backup Server (PBS) on Synology

Add Datastore Click "Add Datastore" Low garbage collection to reduce wear and tear https://pbs.proxmox.com/docs/prune-simulator/ Click "Verify Jobs" > Add 24 hours after garbage collection schedule  

Add PBS to Proxmox VE

Proxmox Proxmox Backup Server (PBS) on Synology

Example Firewall Rule Ports: 8007 Add PBS to PVE Get PBS Fingerprint Click the "Show Fingerprint" button Add Storage to PVE Datacenter Log into PVE > Datacenter > Storage > Add > Proxmox Backup Server Also, paste in your PBS Fingerprint Auto-generate you...

Overview

Proxmox Proxmox Backup Server (PBS) on Synology

Troubleshooting

Proxmox Proxmox Backup Server (PBS) on Synology

PBS Backup Proxy Fails to Start Overview This issue affects the ability for the user to log into the GUI / API SSH access still works In previous experience, this was due to mnt-synology_backups.mnt unit failing to start Triage Log into PBS via SSH or VM co...

Inspect Guest Disk Contents

Proxmox VM Management

This procedure only works for unencrypted disks, or disks where the encryption key is known! List VMs qm list List VMs on PVE node Get VM disk storage path On a default installation, you'd swap Guest_Disks with local-lvm -- e.g. local-lvm:vm-9990-disk-0 pvesm ...

Saving CA over HTTPS

Certificates and Encryption Smallstep

PKI Hierarchy [Root CA Host (Offline Later)] |--- root_ca.crt-------------------------Copy to Intermediate CA-. '--- root_ca_key <--------------------. | | | ...

ACME Certificates on PVE HTTPS

Proxmox Cluster Management

NOTE: The instructions on this page pertain to setting up ACME certificates for the PVEProxy service which terminates TLS on tcp/8006. This does not alter certificates for node-to-node cluster trusts. Background In my environment, I have: STEP CA Intermediate...

ACME Certificates on PBS HTTPS

Proxmox Proxmox Backup Server (PBS) on Synology

NOTE: The instructions on this page pertain to setting up ACME certificates for the proxmox-backup-proxy service which terminates TLS on tcp/8007. This does not alter certificates for node-to-node cluster trusts. Background In my environment, I have: STEP CA ...

Docker Credential Helper on Headless Linux

Linux Administration Docker

Install Prerequisites sudo apt update && sudo apt install -y gpg pass pinentry-tty curl Setup Password Store Configure GPG Agent for Headless Linux [ -d "$HOME/.gnupg" ] || ( mkdir "$HOME/.gnupg" && chmod 700 "$HOME/.gnupg" ) cat > ~/.gnupg/gpg-agent.conf <<...

Git Credential Manager on Headless Linux

Linux Administration Git

Debian Derivatives Install Prerequisite Packages sudo apt update && sudo apt install -y libicu-dev gpg pass pinentry-tty curl libicu-dev -- International Components for Unicode for string operations (Dotnet needs this) gpg -- encrypts credentials pass -- pas...

GitLab SSH Authentication

Linux Administration Git

Generate SSH Keypair ssh-keygen -t ed25519 -C "gitlab-user@domain.tld" -f ~/.ssh/git-ssh-key Enter your GitLab email address in the comment, if desired cat ~/.ssh/git-ssh-key.pub Output the public key string, which will be added in GitLab user profile Add Pub...

Get Raw Command Output from qm guest exec

Proxmox VM Management

sudo apt update && sudo apt install -y jq VM_ID='201' COMMAND='cat /etc/hosts' qm guest exec 201 -- $COMMAND | jq -r '."out-data"'

Read QR Code from Image File

Steganography

zbarimg file.png

Certificate Renewal Dry Run

Certificates and Encryption Certbot

Original ACME Request certbot certonly \ --nginx \ --server https://sub-ca.pki.home.internal/acme/acme@lab.home.internal/directory \ --domain secrets.lab.home.internal \ --email admin@lab.home.internal \ --agree-tos \ --non-interactive   Dry Run to...

Migrate to Cluster-wide VLAN Trunking

Proxmox Cluster Management

Purpose We want to define VLAN IDs that will be trunked from vmbr0 up to the physical managed switch connecting the Proxmox VE node(s). Configuring in SDN allows us to define the trunked VLANs in one central location instead of having to manually create the VL...

Convert P12 to PEM

Certificates and Encryption Convert Formats

cat password_file.txt | openssl pkcs12 -in file.p12 -out file.pem -nodes -passin stdin

Output Response Headers Only

Web curl

curl -sD - -o /dev/null https://domain.tld

procfs Enumeration Pretty Output

Linux

Outputs in procfs are separated by null bytes, thus we use  tr to translate to new line. find /proc -name environ -exec sh -c "cat {} | tr '\0' '\n'" \; 2>/dev/null | sort -u find /proc -name cmdline -exec sh -c 'tr "\0" " " < "$1"; echo' _ {} \; 2>/dev/null |...