158 lines
3.9 KiB
Text
158 lines
3.9 KiB
Text
.. _admin-guide:
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Usage Guide For Administrators
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==============================
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Start API
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----------
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.. code-block:: sh
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ucloud api
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Host Creation
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-------------
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Currently, we don't have any host (that runs virtual machines).
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So, we need to create it by executing the following command
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.. code-block:: sh
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ucloud-cli host create --hostname ungleich.ch --cpu 32 --ram '32GB' --os-ssd '32GB'
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You should see something like the following
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.. code-block:: json
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{
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"message": "Host Created"
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}
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Start Scheduler
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---------------
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Scheduler is responsible for scheduling VMs on appropriate host.
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.. code-block:: sh
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ucloud scheduler
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Start Host
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----------
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Host is responsible for handling the following actions
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* Start VM.
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* Stop VM.
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* Create VM.
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* Delete VM.
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* Migrate VM.
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* Manage Network Resources needed by VMs.
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It uses a hypervisor such as QEMU to perform these actions.
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To start host we created earlier, execute the following command
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.. code-block:: sh
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ucloud host ungleich.ch
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Create OS Image
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---------------
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Create ucloud-init ready OS image (Optional)
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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This step is optional if you just want to test ucloud. However, sooner or later
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you want to create OS images with ucloud-init to properly
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contexualize VMs.
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1. Start a VM with OS image on which you want to install ucloud-init
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2. Execute the following command on the started VM
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.. code-block:: sh
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apk add git
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git clone https://code.ungleich.ch/ucloud/ucloud-init.git
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cd ucloud-init
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sh ./install.sh
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3. Congratulations. Your image is now ucloud-init ready.
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Upload Sample OS Image
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~~~~~~~~~~~~~~~~~~~~~~
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Execute the following to get the sample OS image file.
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.. code-block:: sh
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mkdir /var/www/admin
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(cd /var/www/admin && wget https://cloud.ungleich.ch/s/qTb5dFYW5ii8KsD/download)
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Run File Scanner and Image Scanner
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Currently, our uploaded file *alpine-untouched.qcow2* is not tracked by ucloud. We can only make
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images from tracked files. So, we need to track the file by running File Scanner
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.. code-block:: sh
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ucloud filescanner
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File Scanner would run, scan your uploaded image and track it. You can check whether your image
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is successfully tracked by executing the :code:`ucloud-cli user files`, It will return something like the following
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.. _list-user-files:
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.. code-block:: json
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{
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"message": [
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{
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"filename": "alpine-untouched.qcow2",
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"uuid": "3f75bd20-45d6-4013-89c4-7fceaedc8dda"
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}
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]
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}
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Our file is now being tracked by ucloud. Lets create an OS image using the uploaded file.
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An image belongs to an image store. There are two types of store
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* Public Image Store
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* Private Image Store (Not Implemented Yet)
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.. note::
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**Quick Quiz** Have we created an image store yet?
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The answer is **No, we haven't**. Creating a sample image store is very easy.
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Just execute the following command
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.. code-block:: sh
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(cd ~/ucloud && pipenv run python api/create_image_store.py)
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An image store (with name = "images") would be created. Now, we are fully ready for creating our
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very own image. Executing the following command to create image using the file uploaded earlier
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.. code-block:: sh
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ucloud-cli image create-from-file --name alpine --uuid 3f75bd20-45d6-4013-89c4-7fceaedc8dda --image-store-name images
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Please note that your **uuid** would be different. See :ref:`List of user files <list-user-files>`.
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Now, ucloud have received our request to create an image from file. We have to run Image Scanner to make the image.
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.. code-block:: sh
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ucloud imagescanner
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To make sure, that our image is create run :code:`ucloud-cli image list --public`. You would get
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output something like the following
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.. code-block:: json
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{
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"images": [
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{
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"name": "images:alpine",
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"status": "CREATED"
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}
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]
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}
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