236 lines
4.1 KiB
Markdown
236 lines
4.1 KiB
Markdown
# Alpine Host Setup
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Setup steps for alpine container host using docker compose.
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Download standard iso from https://alpinelinux.org/downloads/
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## live system
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boot from downloaded iso
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### setup-alpine
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```sh
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setup-alpine
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```
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- Keyboard: `us-us` (adjust if needed)
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- set hostname
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- Network: `eth0`, `dhcp`, manual `n`
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- set root password
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- Timezone: `Europe/Berlin` (adjust if preferred)
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- Proxy: `none`
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- apk mirror: `f` (detect automatically)
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- add user to your liking
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- SSH server: `openssh`
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- Select disk: `sda`
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- Disk Setup: `lvm`, then `sys`
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- Erase disk: `y`
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**Setup lvm before reboot!**
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### LVM
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https://wiki.archlinux.org/title/LVM
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```sh
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# install some needed packages
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apk add lvm2-extra e2fsprogs-extra device-mapper
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# list existing LVs
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lvs
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# resize existing and create missing LVs
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lvresize -L <SIZE>G [-r] /dev/vg0/<LV>
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lvcreate -L <SIZE>G -n <LV NAME> vg0
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lvcreate -l 100%FREE -n lv_srv vg0
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# init filesystem for each newly created LV
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mkfs.ext4 /dev/vg0/<LV>
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```
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```
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LV LSize Mount
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lv_root 8.00g /
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lv_logs 4.00g /var/log
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lv_containers 20.00g /var/lib/containers
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lv_srv =REST /srv
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lv_swap =RAM swap
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```
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## Reboot into installed system
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Remove/reorder boot iso. Reboot via hardreset, qemu-guest not functional yet!
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### SSHD
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```sh
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vi /etc/ssh/sshd_config
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```
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- `Port 222`
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- `PermitRootLogin no`
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- `AllowTcpForwarding yes`
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```sh
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service sshd restart
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```
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### sudo
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```sh
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apk update && apk add sudo
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visudo
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```
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Uncomment `%wheel ALL=(ALL:ALL) ALL` to allow users in 'wheel' group to use sudo.
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## From here on you can use ssh and sudo
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```sh
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ssh -p 222 <username>@<hostname>
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sudo -i # use only for setup, it's not good practice to use a root shell!
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```
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### Installed Packages
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```sh
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vi /etc/apk/repositories
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```
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Uncomment community repo
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```sh
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apk update && apk upgrade && apk add \
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gettext \
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awall \
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docker \
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docker-compose \
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docker-zsh-completion \
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git \
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htop \
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nano \
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qemu-guest-agent \
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sudo \
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tree \
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wireguard-tools \
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zsh \
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# currently not available in alpine 3.18:
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docker-compose-zsh-completion \
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```
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### zsh
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```sh
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nano /etc/passwd
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```
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- Change to `/bin/zsh` for desired user.
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#### ohmyzsh
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https://ohmyz.sh/#install
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```sh
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sh -c "$(wget https://raw.github.com/ohmyzsh/ohmyzsh/master/tools/install.sh -O -)"
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```
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- Theme: amuse
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- `export EDITOR=nano`
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### fstab
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```sh
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nano /etc/fstab
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```
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fstab content:
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```
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/dev/vg0/lv_root / ext4 rw,relatime 0 1
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/dev/vg0/lv_logs /var/log ext4 rw,relatime 0 2
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/dev/vg0/lv_containers /var/lib/containers ext4 rw,relatime 0 2
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/dev/vg0/lv_srv /srv ext4 rw,relatime 0 2
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```
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To mount all:
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```sh
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mount -a
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```
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### ntp
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```sh
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rc-update add ntpd
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service ntpd start
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```
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### checkout repo
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```sh
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cd /opt
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git clone <this repo's url>
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```
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### awall
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https://www.cyberciti.biz/faq/how-to-set-up-a-firewall-with-awall-on-alpine-linux/
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https://github.com/alpinelinux/awall/blob/master/README.md
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https://ipset.netfilter.org/iptables-extensions.man.html#lbAO
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If error `modprobe: FATAL: Module ip_tables not found...` -> reboot
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```sh
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cd /etc/awall/optional
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ln -vs /opt/container-server/setup/awall/* .
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awall enable {default,ssh,http}
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awall activate
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```
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### docker
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https://wiki.alpinelinux.org/wiki/Docker
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```sh
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rc-update add docker
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service docker start
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```
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### mta
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Allow system to send mail
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```sh
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setup-mta
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```
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Set outgoing mail server to localhost
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### cron
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```sh
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crontab -e
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```
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Add first line: `MAILTO=cron@<your domain>`.
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Add following cron entry at the top:
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```
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* * * * * run-parts /etc/periodic/constantly
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```
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Then link our crons:
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```sh
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mkdir -p /etc/periodic/constantly/
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ln -vs /opt/container-server/setup/cron/constantly/* /etc/periodic/constantly/
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ln -vs /opt/container-server/setup/cron/daily/* /etc/periodic/daily/
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ln -vs /opt/container-server/setup/cron/weekly/* /etc/periodic/weekly/
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```
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### cgroup mode
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To allow woodpecker build Dockerfiles, set correct cgroup mode.
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```sh
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nano /etc/rc.conf
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reboot
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```
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Set `rc_cgroup_mode="unified`
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