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

Scripts for working with and optimizing proxmox

Maintained and provided by https://eXtremeSHOK.com

Please Submit Patches / Pull requests

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

Turns a fresh proxmox install into an optimised proxmox host not required if server setup with installimage-proxmox.sh

'reboot-quick' command which uses kexec to boot the latest kernel, its a fast method of rebooting, without needing to do a hardware reboot

• 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
• Detect AMD EPYC CPU and Apply Fixes
• Force APT to use IPv4
• Update proxmox and install various system utils
• Customise bashrc
• add the latest ceph provided by proxmox
• Disable portmapper / rpcbind (security)
• Ensure Entropy Pools are Populated, prevents slowdowns whilst waiting for entropy
• Protect the web interface with fail2ban
• Detect if is running in a virtual machine and install the relavant guest agent
• Install ifupdown2 for a virtual internal network allows rebootless networking changes (not compatible with openvswitch-switch)
• Limit the size and optimise journald
• Install kernel source headers
• Install kexec, allows for quick reboots into the latest updated kernel set as primary in the boot-loader.
• Ensure ksmtuned (ksm-control-daemon) is enabled and optimise according to ram size
• Set language, if chnaged will disable XS_NOAPTLANG
• Increase max user watches, FD limit, FD ulimit, max key limit, ulimits
• Optimise logrotate
• Lynis security scan tool by Cisofy
• Increase Max FS open files
• Optimise Memory
• Pretty MOTD BANNER
• Enable Network optimising
• Save bandwidth and skip downloading additional languages, requires XS_LANG="en_US.UTF-8"
• Disable enterprise proxmox repo
• Remove subscription banner
• Install openvswitch for a virtual internal network
• Detect if this is an OVH server and install OVH Real Time Monitoring
• Set pigz to replace gzip, 2x faster gzip compression
• Bugfix: high swap usage with low memory usage
• Enable TCP BBR congestion control
• Enable TCP fastopen
• Enable testing proxmox repo
• Automatically Synchronize the time
• Set Timezone, empty = set automatically by IP
• Install common system utilities
• Increase vzdump backup speed
• Optimise ZFS arc size accoring to memory size
• Install zfs-auto-snapshot

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

return value is 0

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

TO SET AND USE YOUR OWN OPTIONS (using xs-post-install.env)

User Defined Options for (install-post.sh) post-installation script for Proxmox are set in the xs-install-post.env, see the sample : xs-install-post.env.sample

wget https://raw.githubusercontent.com/extremeshok/xshok-proxmox/master/xs-install-post.env.sample -c -O xs-install-post.env
wget https://raw.githubusercontent.com/extremeshok/xshok-proxmox/master/install-post.sh -c -O install-post.sh
nano xs-install-post.env
bash install-post.sh

TO SET AND USE YOUR OWN OPTIONS (using ENV)

Examnple to disable the MOTD banner

wget https://raw.githubusercontent.com/extremeshok/xshok-proxmox/master/install-post.sh -c -O install-post.sh
export XS_MOTD="no"
bash 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 11 to Proxmox 7 (debian11-2-proxmox7.sh) optional

Assumptions: Debian11 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/debian11-2-proxmox7.sh && chmod +x debian11-2-proxmox7.sh
./debian11-2-proxmox7.sh

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

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

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>