# ubuntu

# basic configuration

# New Page



# screen

```bash
vim /etc/screenrc
```

```bash
hardstatus string "%h%? users: %u%?"
startup_message off
hardstatus alwayslastline "hetzner03: %-Lw%{= BW}%50>%n%f*   %t%{-}%+Lw%<"
bindkey -k k7 prev
bindkey -k k8 next
```

# network

The following method allows to change the name of interfaces in ubuntu. The network card below some how is not good recogized by default, one interface is named renameX by default. With this method I assign it the name `enp1s0` by configuration. 

First I get all mac addesses of my interfaces
```bash
ip a
```
```bash
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: rename2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether 00:07:43:0c:32:12 brd ff:ff:ff:ff:ff:ff
3: enp130s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:07:43:0c:32:13 brd ff:ff:ff:ff:ff:ff
    inet 10.7.10.70/24 brd 10.7.10.255 scope global dynamic enp130s0
       valid_lft 5639sec preferred_lft 5639sec
    inet6 fe80::207:43ff:fe0c:3213/64 scope link 
       valid_lft forever preferred_lft forever
```
Then I enable the feature in the grub configuration to set my own interface names. 
```bash
vim /etc/default/grub
```
```bash
GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0"
```
Apply the new configuration
```bash
grub-mkconfig -o /boot/grub/grub.cfg
```
```bash
update-grub
update-initramfs -u
```
Configure the new names per mac address
```bash
vim /etc/udev/rules.d/70-persistent-net.rules
```
```bash
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:07:43:0c:32:12", NAME="enp1s0"
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:07:43:0c:32:13", NAME="enp2s0"
```

# nameserver

In my LAN I want to make use of the DNS of my OPNsense router, there for I change the setup of ubuntu to use if via the following configuration.
```bash
systemctl stop systemd-resolved 
```
```bash
systemctl disable systemd-resolved 
```
```bash
vim /etc/resolv.conf
```
```bash
search home 
nameserver 10.7.10.254
```

# wipe hdd

```bash
wipefs -a /dev/sda
```

# time synchronization

```bash
apt install ntp ntpdate -y
```
```bash
mv /etc/ntp.conf /etc/ntp.conf.orig
vim /etc/ntp.conf
```
```bash
server 10.8.10.254 prefer iburst
```
```bash
timedatectl set-ntp no
```
```bash
service ntp restart
```
```bash
ntpq -p
ntpdate 10.8.10.254
```

# lvm

Check the physical volumes
```bash
pvs
```
```bash
  PV         VG        Fmt  Attr PSize  PFree
  /dev/sda3  ubuntu-vg lvm2 a--  <2.73t    0  
```
Check the volume groups
```bash
vgs
```
```bash
  VG        #PV #LV #SN Attr   VSize  VFree
  ubuntu-vg   1   2   0 wz--n- <2.73t    0
```
Check the logical volumes
```bash
lvs
```
```bash
  LV        VG        Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  plot01    ubuntu-vg -wi-ao----   2.53t                                                    
  ubuntu-lv ubuntu-vg -wi-ao---- 200.00g   
```
Display volume group details
```bash
vgdisplay
```
```bash
  --- Volume group ---
  VG Name               ubuntu-vg
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  3
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                2
  Open LV               2
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               <2.73 TiB
  PE Size               4.00 MiB
  Total PE              715140
  Alloc PE / Size       715140 / <2.73 TiB
  Free  PE / Size       0 / 0   
  VG UUID               rY8uzZ-2Xrc-TdNR-lOWt-Fr4O-uAKY-H0UsRs
```
Create the additional logical volume
```bash
lvcreate -l 663940 -n plot01 ubuntu-vg
```
Create filesystem
```bash
mkfs.ext4 /dev/ubuntu-vg/plot01
```
Get the new UUID
```bash
blkid
```
```bash
/dev/mapper/ubuntu--vg-plot01: UUID="3107980c-8ee0-4f63-adeb-2d0f50fe2f5c" TYPE="ext4"
```
Add it to fstab
```bash
vim /etc/fstab
```
```bash
UUID=3107980c-8ee0-4f63-adeb-2d0f50fe2f5c /home/chia/chia/chia-blockchain/plot01 ext4  errors=remount-ro        0       1
```

# chrony

```bash
apt install chrony -y
```
```bash
vim /etc/chrony/chrony.conf
```
```bash
server 10.8.20.254         iburst  prefer
```
```bash
systemctl restart chronyd
```
```bash
chronyc sources
```
```bash
/sbin/hwclock --systohc
```

# ansible

Install basic dependencies for ansible
```bash
apt update && apt upgrade -y && apt autoremove -y && reboot
apt update
apt install software-properties-common -y
apt-add-repository --yes --update ppa:ansible/ansible
apt install python-argcomplete
vim /etc/ansible/hosts
```
Add the following configuration to your `/etc/asible/hosts` file.
```bash
[master]
apu03.home

[k8s]
apu[03:06].home

[nodes]
apu[04:06].home

[k8s:vars]
ansible_python_interpreter=/usr/bin/python3
```
Add an `ansible` user
```bash
useradd -m ansible
```
With group `ansible` and `sudo` allowance
```bash
usermod -a -G sudo ansible
```
Switch to the user
```bash
su - ansible
```
Start `bash`
```bash
bash
```
Create an ssh key
```bash
ssh-keygen
```
Give the user `ansible` the bash shell as default
```bash
usermod --shell /bin/bash ansible
```
Allow to sudo without password from the ansible user
```bash
echo "ansible ALL = (root) NOPASSWD:ALL" | sudo tee /etc/sudoers.d/ansible
sudo chmod 0440 /etc/sudoers.d/ansible
```
Copy the public ssh key of the ansible user
```bash
vim .ssh/id_rsa.pub
```
Add it on all nodes as authorized key
```bash
mkdir .ssh
vim .ssh/authorized_keys
```
Find my first playbook on [github](https://github.com/x3kcl/ansible-k8s)

# icedtea

Install icedtea
```bash
sudo add-apt-repository ppa:maarten-fonville/ppa
sudo apt-get update
sudo apt-get install icedtea-8-plugin
```
[https://askubuntu.com/questions/491995/icedtea-plugin-for-openjdk-8](https://askubuntu.com/questions/491995/icedtea-plugin-for-openjdk-8)

# rclone

```bash
apt install unzip fuse3 networkd-dispatcher -y
```

```bash
curl https://rclone.org/install.sh | sudo bash
```

```bash
vim /etc/fuse.conf
```

```bash
user_allow_other
```

```bash
vim /etc/networkd-dispatcher/routable.d/rclone.sh
```

```bash
#!/bin/bash
  
echo " Network is up"

runuser -l  cloud -c '/home/cloud/.startup/rclone'
```

# chia

# plotman

```bash
sudo apt install python3-pip python3-testresources -y
```

```bash
pip install --force-reinstall git+https://github.com/ericaltendorf/plotman@main
```

Restart session after, since the binary might not yet be in path.

# cuda

Copied from here: https://www.reddit.com/r/chia/comments/18z4lnp/how_to_install_bladbit_cuda_on_ubuntu/

My steps (I am running ubuntu 22.04, i Had problems with 24.10 due to some dependencies)


I preffer installing the drivers from PPA to get an updated version but "sudo apt install nvidia-driver-535" would also work. the important part is to verify with "nvidia-smi" after reboot


----------------Install NVIDIA Drivers on Ubuntu 22.04 via CUDA PPA------------

```bash
sudo apt install dirmngr ca-certificates software-properties-common apt-transport-https dkms curl -y
```

#import the GPG key

```bash
curl -fSsL https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2204/x86_64/3bf863cc.pub | sudo gpg --dearmor | sudo tee /usr/share/keyrings/nvidia-drivers.gpg > /dev/null 2>&1
```

#add the NVIDIA repository for your system

```bash
echo 'deb [signed-by=/usr/share/keyrings/nvidia-drivers.gpg] https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2204/x86_64/ /' | sudo tee /etc/apt/sources.list.d/nvidia-drivers.list
```
```bash
sudo apt update
```
Check available Dirver
```bash
apt search nvidia-driver-*
```
I Chose driver-545 that is a newer driver than the avaiable on the ubuntu repository for 22.04
```bash
sudo apt install nvidia-driver-545 cuda
```
#Check Driver version
```bash
nvidia-smi
```
----------------Install BaldeBit CUDA------------

#install pre-req
```bash
sudo apt install -y build-essential cmake libgmp-dev libnuma-dev
```
#Build
```bash
cd
```
```bash
git clone https://github.com/Chia-Network/bladebit.git
```
```bash
cd bladebit
```
```bash
git checkout cuda-compression
```
```bash
mkdir -p build-release && cd build-release
```
```bash
cmake .. && cmake --build . --config Release --target bladebit_cuda -j$(nproc --all)
```
#run
```bash
cd ~/bladebit/build-release
```
```bash
./bladebit_cuda -n 1 -f XXX -c XXX --compress XXX cudaplot /media/temp_plots
```
#replace with your farmer key, pool contract, compresion level and save directory

---------------Some Other must have --------------------

#-----monitoring with a nice terminal GUI---------
```bash
sudo apt install bpytop
```
```bash
bytop
```
#---------Moving plots to a final destination---------
```bash
cd
```
```bash
git clone https://github.com/lmacken/plow.git
```
#edit plow configuration (most important "SOURCES =" & "DESTS ="
```bash
sudo nano ./plow/plow.py
```
#install Python
```bash
sudo apt install python3-pip
```
```bash
pip install aionotify
```
```bash
python3 ./plow/plow.py
```