xshok-proxmox :: eXtremeSHOK.com Proxmox (pve)

Optimization / Post Install Script (install-post.sh aka postinstall.sh) run once

not required if server setup with hetzner-install-proxmox.sh

• 'reboot-quick' command which uses kexec to boot the latest kernel set in the boot loader
• Force APT to use IPv4
• Disable the enterprise repo, enable the public repo, Add non-free sources
• Fixes known bugs (public key missing, max user watches, etc)
• Update the system
• Install ceph, ksmtuned, openvswitch-switch, zfsutils and common system utilities
• Increase vzdump backup speed, enable pigz and fix ionice
• Increase max Key limits, max user watches, max File Discriptor Limits, ulimits
• Detect AMD CPU and install -edgekernel 5.xx
• Detect AMD EPYC CPU and Apply EPYC fixes to kernel and KVM
• Install and configure ZFS-auto-snapshots (12x5min, 7daily, 4weekly, 3monthly)
• Disable portmapper / rpcbind (security)
• set-timezone UTC and enable timesyncd as nntp client
• Set pigz to replace gzip, 2x faster gzip compression
• Detect OVH Server and install OVH RTM (real time monitoring)"
• Protect the webinterface with fail2ban (security)
• Optimize ZFS arc size depending on installed memory, Use 1/16 RAM for MAX cache, 1/8 RAM for MIN cache, or 1GB
• ZFS Tuning, set prefetch method and max write speed to l2arc
• Enable TCP BBR congestion control, improves overall network throughput

https://raw.githubusercontent.com/extremeshok/xshok-proxmox/master/install-post.sh

return value is 0

Or run install-post.sh after installation

wget https://raw.githubusercontent.com/extremeshok/xshok-proxmox/master/install-post.sh -c -O install-post.sh && bash install-post.sh && rm install-post.sh

Install Proxmox Recommendations

Recommeneded partitioning scheme:

• Raid 1 (mirror) 40 000MB ext4 /
• Raid 1 (mirror) 30 000MB ext4 /xshok/zfs-cache only create if an ssd and there is 1+ unused hdd which will be made into a zfspool
• Raid 1 (mirror) 5 000MB ext4 /xshok/zfs-slog only create if an ssd and there is 1+ unused hdd which will be made into a zfspool
• SWAP
• • HDD less than 130gb = 16GB swap
• • HDD more than 130GB and RAM less than 64GB = 32GB swap
• • HDD more than 130GB and RAM more than 64GB = 64GB swap
• Remaining for lv xfs /var/lib/vz (LVM)

Hetzner Proxmox Installation Guide

see hetzner folder

OVH Proxmox Installation Guide

see ovh folder

------- SCRIPTS ------

Convert from Debian 10 to Proxmox 6 (debian10-2-proxmox6.sh) optional

Assumptions: Debian9 installed with a valid FQDN hostname set

• Tested on KVM, VirtualBox and Dedicated Server
• Will automatically detect cloud-init and disable.
• Will automatically generate a correct /etc/hosts
• Note: will automatically run the install-post.sh script

curl -O https://raw.githubusercontent.com/extremeshok/xshok-proxmox/master/debian-2-proxmox/debian10-2-proxmox6.sh && chmod +x debian10-2-proxmox6.sh
./debian10-2-proxmox6.sh

Convert from Debian 9 to Proxmox 5 (debian9-2-proxmox5.sh) optional

Assumptions: Debian9 installed with a valid FQDN hostname set

• Tested on KVM, VirtualBox and Dedicated Server
• Will automatically detect cloud-init and disable.
• Will automatically generate a correct /etc/hosts
• Note: will automatically run the install-post.sh script

curl -O https://raw.githubusercontent.com/extremeshok/xshok-proxmox/master/debian-2-proxmox/debian9-2-proxmox5.sh && chmod +x debian9-2-proxmox5.sh
./debian9-2-proxmox5.sh

Enable Docker support for an LXC container (pve-enable-lxc-docker.sh) optional

There can be security implications as the LXC container is running in a higher privileged mode.

curl https://raw.githubusercontent.com/extremeshok/xshok-proxmox/master/helpers/pve-enable-lxc-docker.sh --output /usr/sbin/pve-enable-lxc-docker && chmod +x /usr/sbin/pve-enable-lxc-docker
pve-enable-lxc-docker container_id

Convert from LVM to ZFS (lvm-2-zfs.sh) run once

Converts the a MDADM BASED LVM into a ZFS raid 1 (mirror)

• Defaults to mount point: /var/lib/vz
• Optional: specify the LVM_MOUNT_POINT ( ./lvm-2-zfs.sh LVM_MOUNT_POINT )
• Creates the following storage/rpools
• zfsbackup (rpool/backup)
• zfsvmdata (rpool/vmdata)
• /var/lib/vz/tmp_backup (rpool/tmp_backup)
• Will automatically detect the required raid level and optimise.
• 1 Drive = zfs
• 2 Drives = mirror
• 3-5 Drives = raidz-1
• 6-11 Drives = raidz-2
• 11+ Drives = raidz-3

NOTE: WILL DESTROY ALL DATA ON LVM_MOUNT_POINT

wget https://raw.githubusercontent.com/extremeshok/xshok-proxmox/master/zfs/lvm-2-zfs.sh -c -O lvm-2-zfs.sh && chmod +x lvm-2-zfs.sh
./lvm-2-zfs.sh

Create ZFS from devices (createzfs.sh) optional

Creates a zfs pool from specified devices

• Will automatically detect the required raid level and optimise
• 1 Drive = zfs (single)
• 2 Drives = mirror (raid1)
• 3-5 Drives = raidz-1 (raid5)
• 6-11 Drives = raidz-2 (raid6)
• 11+ Drives = raidz-3 (raid7)

NOTE: WILL DESTROY ALL DATA ON SPECIFIED DEVICES

wget https://raw.githubusercontent.com/extremeshok/xshok-proxmox/master/zfs/createzfs.sh -c -O createzfs.sh && chmod +x createzfs.sh
./createzfs.sh poolname /dev/device1 /dev/device2

Create ZFS cache and slog from /xshok/zfs-cache and /xshok/zfs-slog partitions and adds them to a zpool (xshok_slog_cache-2-zfs.sh) optional

Creates a zfs pool from specified devices

• Will automatically mirror the slog and stripe the cache if there are multiple drives

NOTE: WILL DESTROY ALL DATA ON SPECIFIED PARTITIONS

wget https://raw.githubusercontent.com/extremeshok/xshok-proxmox/master/zfs/xshok_slog_cache-2-zfs.sh -c -O xshok_slog_cache-2-zfs.sh && chmod +x xshok_slog_cache-2-zfs.sh
./xshok_slog_cache-2-zfs.sh poolname

CREATES A ROUTED vmbr0 AND NAT vmbr1 NETWORK CONFIGURATION FOR PROXMOX (network-configure.sh) run once

Autodetects the correct settings (interface, gatewat, netmask, etc) Supports IPv4 and IPv6, Private Network uses 10.10.10.1/24 Also installs and properly configures the isc-dhcp-server to allow for DHCP on the vmbr1 (NAT) ROUTED (vmbr0): All traffic is routed via the main IP address and uses the MAC address of the physical interface. VM's can have multiple IP addresses and they do NOT require a MAC to be set for the IP via service provider

NAT (vmbr1): Allows a VM to have internet connectivity without requiring its own IP address Assignes 10.10.10.100 - 10.10.10.200 via DHCP

Public IP's can be assigned via DHCP, adding a host define to the /etc/dhcp/hosts.public file

Tested on OVH and Hetzner based servers

ALSO CREATES A NAT Private Network as vmbr1

NOTE: WILL OVERWRITE /etc/network/interfaces A backup will be created as /etc/network/interfaces.timestamp

wget https://raw.githubusercontent.com/extremeshok/xshok-proxmox/master/networking/network-configure.sh -c -O network-configure.sh && chmod +x network-configure.sh
./network-configure.sh && rm network-configure.sh

Creates default routes to allow for extra ip ranges to be used (network-addiprange.sh) optional

If no interface is specified the default gateway interface will be detected and used.

wget https://raw.githubusercontent.com/extremeshok/xshok-proxmox/master/networking/network-addiprange.sh -c -O network-addiprange.sh && chmod +x network-addiprange.sh
./network-addiprange.sh ip.xx.xx.xx/cidr interface_optional

Create Private mesh vpn/network (tincvpn.sh)

tinc private mesh vpn/network which supports multicast, ideal for private cluster communication

wget https://raw.githubusercontent.com/extremeshok/xshok-proxmox/master/networking/tincvpn.sh -c -O tincvpn.sh && chmod +x tincvpn.sh
./tincvpn.sh -h

Example for 3 node Cluster

cat /etc/hosts

global ips for tinc servers

11.11.11.11 host1

22.22.22.22 host2

33.33.33.33 host3

First Host (hostname: host1)

bash tincvpn.sh -i 1 -c host2

Second Host (hostname: host2)

bash tincvpn.sh -i 2 -c host3

Third Host (hostname: host3)

bash tincvpn.sh -i 3 -c host1

NOTES

Alpine Linux KVM / Qemu Agent Client Fix

Run the following on the guest alpine linux

apk update && apk add qemu-guest-agent acpi
echo 'GA_PATH="/dev/vport2p1"' >> /etc/conf.d/qemu-guest-agent
rc-update add qemu-guest-agent default
rc-update add acpid default
/etc/init.d/qemu-guest-agent restart

Proxmox ACME / Letsencrypt

Run the following on the proxmox server, ensure you have a valid DNS for the server which resolves

pvenode acme account register default [email protected]
pvenode config set --acme domains=example.invalid
pvenode acme cert order

ZFS Snapshot Usage

# list all snapshots
zfs list -t snapshot
# create a pre-rollback snapshot
zfs-auto-snapshot --verbose --label=prerollback -r //
# rollback to a specific snapshot
zfs rollback <snapshotname>