Installation
============

.. note::
    The below installation instructions are for single node and without ceph ucloud installation.
    
    The instructions assumes the following things
    
    * User is **root**.
    * Base Directory is :file:`/root/`.

Alpine
------

.. note::
    Python Wheel (Binary) Packages does not support Alpine Linux as it is using musl libc instead of glibc.
    Therefore, expect longer installation times than other linux distributions.

Enable Edge Repos, Update and Upgrade
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. warning::
    The below commands would overwrite your repositories sources and upgrade all packages and their dependencies to match those available in edge repos. **So, be warned**
.. code-block:: sh
    :linenos:

    cat > /etc/apk/repositories << EOF
    http://dl-cdn.alpinelinux.org/alpine/edge/main
    http://dl-cdn.alpinelinux.org/alpine/edge/community
    http://dl-cdn.alpinelinux.org/alpine/edge/testing
    EOF

    apk update
    apk upgrade

    reboot


Install Dependencies
~~~~~~~~~~~~~~~~~~~~
.. note::
    The installation and configuration of a production grade etcd cluster
    is out of scope of this manual. So, we will install etcd with default configuration.

.. code-block:: sh
    :linenos:

    apk add git python3 alpine-sdk python3-dev etcd etcd-ctl openntpd \
            libffi-dev openssl-dev make py3-protobuf py3-tempita chrony \
            qemu qemu-system-x86_64 qemu-img
    
    pip3 install pipenv

Syncronize Date/Time
~~~~~~~~~~~~~~~~~~~~

.. code-block:: sh
    :linenos:

    service chronyd start
    rc-update add chronyd


Start etcd and enable it
~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: sh
    :linenos:

    start-stop-daemon -b etcd
    rc-update add etcd


Install uotp
~~~~~~~~~~~~

.. code-block:: sh
    :linenos:

    git clone https://code.ungleich.ch/ungleich-public/uotp.git
    cd uotp
    mv .env.sample .env

    pipenv --three --site-packages
    pipenv install
    pipenv run python app.py

Run :code:`ETCDCTL_API=3 etcdctl get /uotp/admin --print-value-only` to get admin seed. A sample output

.. code-block:: json

    {
        "seed": "FYTVQ72A2CJJ4TB4",
        "realm": ["ungleich-admin"]
    }

Now, run :code:`pipenv run python scripts/create-auth.py FYTVQ72A2CJJ4TB4` (Replace **FYTVQ72A2CJJ4TB4** with your admin seed obtained in previous step).
A sample output is as below. It shows seed of auth.

.. code-block:: json

    {
        "message": "Account Created\nname: auth, realm: ['ungleich-auth'], seed: XZLTUMX26TRAZOXC"
    }

.. note::
    Please note both **admin** and **auth** seeds as we would need them in setting up ucloud


Install and configure ucloud
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: sh
    :linenos:

    git clone https://code.ungleich.ch/ucloud/ucloud.git
    cd ucloud
    
    pipenv --three --site-packages
    pipenv install


You just need to update **AUTH_SEED** in the below code to match your auth's seed.


.. code-block:: sh
    :linenos:

    cat > .env << EOF
    AUTH_NAME=auth
    AUTH_SEED=XZLTUMX26TRAZOXC
    AUTH_REALM=ungleich-auth

    REALM_ALLOWED = ["ungleich-admin", "ungleich-user"]

    OTP_SERVER="http://127.0.0.1:8000/"

    ETCD_URL=localhost

    STORAGE_BACKEND=filesystem

    BASE_DIR=/var/www
    IMAGE_DIR=/var/image
    VM_DIR=/var/vm

    VM_PREFIX=/v1/vm/
    HOST_PREFIX=/v1/host/
    REQUEST_PREFIX=/v1/request/
    FILE_PREFIX=/v1/file/
    IMAGE_PREFIX=/v1/image/
    IMAGE_STORE_PREFIX=/v1/image_store/
    USER_PREFIX=/v1/user/
    NETWORK_PREFIX=/v1/network/

    ssh_username=meow
    ssh_pkey="~/.ssh/id_rsa"

    VXLAN_PHY_DEV="eth0"

    EOF


Install and configure ucloud-cli
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: sh
    :linenos:

    git clone https://code.ungleich.ch/ucloud/ucloud-cli.git
    cd ucloud-cli
    pipenv --three --site-packages
    pipenv install

    cat > .env << EOF
    UCLOUD_API_SERVER=http://localhost:5000
    EOF

    mkdir /var/www/
    mkdir /var/image/
    mkdir /var/vm/


Environment Variables and aliases
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

To ease usage of ucloud and its various componenets put the following in your shell
profile e.g *~/.profile*

.. code-block:: sh

    export OTP_NAME=admin
    export OTP_REALM=ungleich-admin
    export OTP_SEED=FYTVQ72A2CJJ4TB4

    alias ucloud='cd /root/ucloud/ && pipenv run python ucloud.py'
    alias ucloud-cli='cd /root/ucloud-cli/ && pipenv run python ucloud.py'
    alias uotp='cd /root/uotp/ && pipenv run python app.py'

and run :code:`source ~/.profile`