This exercise was part of the testing open star tracker in a Raspberry Pi Zero W 2.

The Open Star Tracker documentation hasn't detailed very well the steps to install all the prerequisite to make it work. So after some iterations these are the steps to install it.

The goal is to install OpenStarTracker using miniconda, assuming a Debian 12.12 fresh install using a regular account star (not as root)

adduser star

chrony is a versatile implementation of the Network Time Protocol (NTP). It can synchronise the system clock with NTP servers. Chrony is an accurate network time daemon and an alternate implementation of the Network Time Protocol (NTP) compared to ntp.org's NTPd.

Chrony has quite a few advantages over the other NTP implementations, check the chrony ntp comparison page for more details.

FreeBSD 12 supports Chrony v3.5 which allows privilege separation. The installer will create the user chronyd. So the Chrony daemon will running as the the unprivileged user chronyd

I am going to use use a Centos 7 minimal install virtual box machine. So the first step is to clone the VM with new mac address.

CentOS: 7.7

php: 7.3.16

mariadb: 10.1.41

In order to connect to MySQL over a ssh tunnel, you have to set your ssh config as follow:

Edit your .ssh/config file and add the following lines:

 Host chinoserver
 Hostname 192.168.100.200

dnf install epel-release

Last metadata expiration check: 0:01:11 ago on Wed 01 Apr 2020 10:54:30 PM MDT.
Dependencies resolved.
============================================================================================================================
 Package                          Architecture               Version                       Repository                  Size

Red Hat has moved the Network Time Protocol implementation from ntp package to chrony(*)

The system’s timezone is set during the install process, but it can be easily changed at a later time.

timedatectl is the command to set time and date. An example on how to set and check the timezone for Mount Time Zone or America/Denver (MDT)

• numpy, wheel , six and setuptools
• bazel https://docs.bazel.build/versions/master/install.html

This is an introduction to building and installing Python 3.7.0 from source on Red Hat or Centos 6. Unfortunately python 3.7.0 requires specifics version of openssl and RHEL/Centos 6.9 does not provides this versions: So previous to configure pyhton, you have to configure zlib and then openssl.

• zlib 1.1.3 (better 1.1.4) or upper
• openssl 1.1.0 or upper
• Also, you will need libffi-devel rpm

There are (at least) three possible ways to install a python package in your $HOME/.local directory, and I will review two of the. All of them have to be followed by a configuration of your environment, more specifically the PYTHONPATH

pip is the easy way to install python packages

pip install numpy --user
Collecting numpy
  Downloading https://files.pythonhosted.org/packages/1a/2e/4e298c92b1fced64a4414ada9af3253a91083b92b131c2b10c057c507982/numpy-1.15.1-cp37-cp37m-manylinux1_x86_64.whl (13.8MB)
    100% |################################| 13.9MB 1.7MB/s