# Alpine Host Setup

Setup steps for alpine container host using podman compose.

For usage with docker compose, the following parts (might) need adjustment

- Mount point for lv_containers
- Installed packages
- iptables/awall rules

Download standard iso from https://alpinelinux.org/downloads/

## live system

boot from downloaded iso

### setup-alpine

```sh
setup-alpine
```

- Keyboard: `us-us` (adjust if needed)
- set hostname
- Network: `eth0`, `dhcp`, manual `n`
- set root password
- Timezone: `Europe/Berlin` (adjust if preferred)
- Proxy: `none`
- apk mirror: `f` (detect automatically)
- add user to your liking
- SSH server: `openssh`
- Select disk: `sda`
- Disk Setup: `lvm`, then `sys`
- Erase disk: `y`

Setup lvm before reboot

### LVM

https://wiki.archlinux.org/title/LVM

```sh
# install some needed packages
apk add lvm-extra e2fsprogs-extra
# list existing LVs
lvs
# resize existing and create missing LVs
lvresize -L <SIZE>G [-r] /dev/vg0/<LV>
lvcreate -L <SIZE>G -n <LV NAME> vg0
lvcreate -l 100%FREE -n lv_srv vg0
# init filesystem for each newly created LV
mkfs.ext4 /dev/vg/<LV>
```

```
LV                LSize  Mount
lv_root           8.00g  /
lv_logs           4.00g  /var/log
lv_containers    20.00g  /var/lib/containers
lv_srv            =REST  /srv
lv_swap            =RAM  swap
```

## Reboot into installed system

Remove/reorder boot iso. Reboot via hardreset, qemo-guest not functional yet!

### SSHD

```sh
vi /etc/ssh/sshd_config
```

- `Port 222`
- `PermitRootLogin no`
- `AllowTcpForwarding yes`

### Installed Packages

Uncomment community repo in `/etc/apk/repositories`

```sh
apk update && apk upgrade && apk add \
    gettext \
    git \
    nano \
    tmux \
    tree \
    zsh \
    docker \
    docker-compose \
    docker-zsh-completion \
    docker-compose-zsh-completion \
    awall \
    qemu-guest-agent \ # depends on your KVM/virtualization situation
    doas \
    podman \
    doas-sudo-shim \
    py3-pip \ # requirement for podman-compose
```

### sudo/doas config

https://wiki.archlinux.org/title/Doas

```sh
echo permit persist csp > /etc/doas.conf
chown -c root:root /etc/doas.conf
chmod -c 0400 /etc/doas.conf
doas -C /etc/doas.conf && echo "config ok" || echo "config error"
```

### ZSH

```sh
sudo nano /etc/passwd
```

- Change to `/bin/zsh` for desired user.

### ohmyzsh

https://ohmyz.sh/#install

```sh
sh -c "$(wget https://raw.github.com/ohmyzsh/ohmyzsh/master/tools/install.sh -O -)"
```

- Theme: bira

### fstab

```sh
sudo nano /etc/fstab
```

fstab content:

```
/dev/vg0/lv_root        /                       ext4    rw,relatime 0 1
/dev/vg0/lv_logs        /var/log                ext4    rw,relatime 0 2
/dev/vg0/lv_containers  /var/lib/containers     ext4    rw,relatime 0 2
/dev/vg0/lv_srv         /srv                    ext4    rw,relatime 0 2
```

### awall

https://www.cyberciti.biz/faq/how-to-set-up-a-firewall-with-awall-on-alpine-linux/  
https://github.com/alpinelinux/awall/blob/master/README.md  
https://ipset.netfilter.org/iptables-extensions.man.html#lbAO  

If error `modprobe: FATAL: Module ip_tables not found...` -> reboot

```sh
cd /etc/awall/optional
ln -s /opt/container-server/setup/awall/* .
awall enable {default,ssh,hhtp}
awall activate
podman network reload --all
```

### podman + podman-compose

https://wiki.alpinelinux.org/wiki/Podman

```sh
rc-update add docker
# rc-update add cgroups
# rc-service cgroups start
```

https://github.com/containers/podman-compose#installation

```sh
pip3 install podman-compose
```