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These are instructions for setting up a Snowflake broker on Debian 10.
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Set up APT and etckeeper.
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Install etckeeper.
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```
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root# vi /etc/apt/source.list # remove "contrib" and "non-free"
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root# apt update
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root# apt upgrade
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root# apt install etckeeper
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```
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Add a normal user.
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```
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root# adduser user
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root# adduser user sudo
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root# su - user
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user$ mkdir -m 700 .ssh
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user$ echo "ssh-ed25519 ..." >> .ssh/authorized_keys
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user$ exit
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root# exit
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```
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Log in as the normal user and disable login for root.
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```
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user$ sudo -s
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root# vi /etc/ssh/sshd_config
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PermitRootLogin no
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AllowUsers user
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PasswordAuthentication no
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root# rm /root/.ssh/authorized_keys
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root# service sshd restart
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```
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Add other users.
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```
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root# adduser user1
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root# adduser user1 sudo
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root# adduser user2
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root# adduser user2 sudo
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root# adduser user3
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root# adduser user3 sudo
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root# vi /etc/ssh/sshd_config
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AllowUsers user user1 user2 user3
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root# etckeeper commit "Add users."
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```
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Set up a firewall.
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```
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root# apt install ferm # Enable ferm on bootup? Yes
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root# vi /etc/ferm/ferm.conf
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domain (ip ip6) {
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table filter {
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chain INPUT {
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...
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# allow HTTP connections (for ACME HTTP-01 challenge)
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proto tcp dport http ACCEPT;
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# allow HTTPS connections
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proto tcp dport https ACCEPT;
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}
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...
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}
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}
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root# service ferm restart
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root# etckeeper commit "Allow HTTP and HTTPS through the firewall."
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```
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Set up an IPv6 address. You can use any address in the 2a00:c6c0:0:154:4::/80 prefix.
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```
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root# python -c 'import os; print ":".join(os.urandom(2).encode("hex") for _ in range(3))'
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d8aa:b4e6:c89f
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root# vi /etc/network/interfaces
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iface eth0 inet6 static
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address 2a00:c6c0:0:154:4:d8aa:b4e6:c89f
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netmask 64
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gateway 2a00:c6c0:0:154::1
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root# etckeeper commit "Add IPv6 address."
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root# reboot
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```
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Install the broker.
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```
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root# install --owner root /home/user/broker /usr/local/bin/
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root# apt install runit-systemd tor-geoipdb
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root# echo "/runit/**/supervise" >> /etc/.gitignore
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root# adduser --system snowflake-broker
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root# mkdir -p /etc/runit/snowflake-broker
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root# vi /etc/runit/snowflake-broker/run
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#!/bin/sh -e
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setcap 'cap_net_bind_service=+ep' /usr/local/bin/broker
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exec chpst -u snowflake-broker -o 32768 /usr/local/bin/broker --metrics-log /home/snowflake-broker/metrics.log --acme-hostnames snowflake-broker.bamsoftware.com,snowflake-broker.freehaven.net,snowflake-broker.torproject.net --acme-email dcf@torproject.org --acme-cert-cache /home/snowflake-broker/acme-cert-cache 2>&1
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root# chmod +x /etc/runit/snowflake-broker/run
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root# mkdir -p /etc/runit/snowflake-broker/log
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root# vi /etc/runit/snowflake-broker/log/run
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root# chmod +x /etc/runit/snowflake-broker/log/run
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#!/bin/sh -e
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svlogd /var/log/snowflake-broker
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root# mkdir -p /var/log/snowflake-broker
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root# vi /var/log/snowflake-broker/config
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# http://smarden.org/runit/svlogd.8.html
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# limit size to 10MB before rotation
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s10000000
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# don't delete old logs
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n0
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# unless the filesystem is full
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N1
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# compress old logs
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!xz
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root# ln -s /etc/runit/snowflake-broker /etc/service
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root# etckeeper commit "Install snowflake-broker."
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```
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Install prometheus-node-exporter for resource monitoring (#29863).
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```
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root# apt install prometheus-node-exporter
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root# vi /etc/default/prometheus-node-exporter
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ARGS="--no-collector.arp --no-collector.bcache --no-collector.bonding --no-collector.conntrack --no-collector.cpu --no-collector.edac --no-collector.entropy --no-collector.filefd --no-collector.hwmon --no-collector.infiniband --no-collector.ipvs --no-collector.loadavg --no-collector.mdadm --no-collector.meminfo --no-collector.netclass --no-collector.netdev --no-collector.netstat --no-collector.nfs --no-collector.nfsd --no-collector.sockstat --no-collector.stat --no-collector.textfile --no-collector.timex --no-collector.uname --no-collector.vmstat --no-collector.xfs --no-collector.zfs"
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root# service prometheus-node-exporter restart
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root# etckeeper commit "Install prometheus-node-exporter."
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```
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Do some other nice configuration.
|
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|
```
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root# apt install unattended-upgrades man screen rsync
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root# update-alternatives --config editor # Choose /usr/bin/vim.tiny
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|
``` |
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\ No newline at end of file |
