rasPi Stretch Lite install notes

[Achim Gratz]

I've been postponing the upgrade of the rasPi 1B+ to Stretch for a
while… well, the three year old SD card gave up the ghost while I was
away over the holidays, so that has been forced on me to do yesterday.
After a few days of trying I could actually dump an image of the card so
I have salvaged the logs up until the filesystem went read-only and I
only lost about a week of data (the ntpd itself was still operational).

Here are the notes from my install in the hope it may help somebody on
their next installation:

--8<---------------cut here---------------start------------->8---
*** Raspbian Stretch Lite install
**** Modify SD card image
     - cd /mnt/root # root partion
       + vi etc/shadow   # change password hash (copy from other machine or use passwd -R /mnt/root pi)
       + vi etc/hostname # change hostname
       + vi etc/hosts    # change hostname
     - cd /mnt/boot
       + touch ssh       # enable ssh
       + vi cmdline.txt  # remove serial console
       + vi config.txt   # add gpio-pps overlay
**** Post Initial Boot
     - uname -a # Linux raspberrypi1 4.9.59+ #1047 Sun Oct 29 11:47:10 GMT 2017 armv6l GNU/Linux
     - sudo apt-get update && sudo apt-get -us dist-upgrade && sudo apt-get -u dist-upgrade && sudo apt-get autoremove
     - sudo dpkg-reconfigure tzdata locales # set up TZ and locale information, ensure availability of at least one UTF-8 locale
     - echo LC_MESSAGES=POSIX | sudo tee -a /etc/default/locale
     - sudo apt-get install ntp emacs cpufrequtils pps-tools setserial miniterm picocom python-serial rsync git
     - systemctl stop systemd-timesyncd && systemctl disable systemd-timesyncd # stop and disable timesyncd (SNTP client)
     - sudo apt-mark hold ntp # install ntpsec over existing scaffolding
     - sudo reboot
**** NTPsec development
     - git clone https://gitlab.com/NTPsec/ntpsec.git
     - sudo ./buildprep --doc --ntpviz # this pulls in way too many packages…
     - ./waf configure --refclock=nmea,pps,local,generic,shm --prefix=/usr --enable-early-droproot
     - sudo vi /etc/udev/rules.d/{77-dcf77,66-ublox6,88-ublox8,99-navspark}.rules
     - sudo udevadm trigger
     - sudo vi /etc/cron.daily/ntp # increase retention period
     - sudo vi /etc/ntp.conf
     - echo "1 SHA1" $(base64 /dev/urandom | tr -d '+/=' | head -c 20) | sudo tee /etc/ntp.keys && sudo chmod 600 /etc/ntp.keys
     - sudo rm /var/run/ntp.conf.dhcp /etc/dhcp/dhclient-exit-hooks.d/ntp
     - sudo mkdir -p /var/log/ntpstat && sudo chown ntp.ntp /var/log/ntpstat
     - rm wafhelpers/.autorevision-cache ; ./waf build && sudo ./waf install && sudo systemctl restart ntp && watch -n 5 'ntpq -W92 -c rv -c peers -c "cv &1" -c "cv &2"'
--8<---------------cut here---------------end--------------->8---


Regards,
Achim.
-- 
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+

SD adaptation for Waldorf microQ V2.22R2:
http://Synth.Stromeko.net/Downloads.html#WaldorfSDada