Effort is made to ensure a VM always have a status and Unused VM statuses are removed

Pipfile

@@ -20,6 +20,7 @@ sshtunnel = "*"
 helper = "*"
 sphinx = "*"
 pynetbox = "*"
+sphinx-rtd-theme = "*"
 
 [requires]
 python_version = "3.5"

Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "f43a93c020eb20212b437fcc62882db03bfa93f4678eb930e31343d687c805ed"
+            "sha256": "7f5bc76f02cef7e98fa631f1954b2b7afa46a7796650386b91c9a6c591945f75"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -379,10 +379,10 @@
         },
         "pynetbox": {
             "hashes": [
-                "sha256:09525a29f1ac8c1a54772d6e2b94a55b1db6ba6a1c5b07f7af6a6ce232b1f7d5"
+                "sha256:7c2282891ab1d3a5f5b28cb3b83c30d33c7ac3da1ee928c7332a4d2fac32f283"
             ],
             "index": "pypi",
-            "version": "==4.1.0"
+            "version": "==4.2.0"
         },
         "pyotp": {
             "hashes": [
@@ -466,6 +466,14 @@
             "index": "pypi",
             "version": "==2.2.1"
         },
+        "sphinx-rtd-theme": {
+            "hashes": [
+                "sha256:00cf895504a7895ee433807c62094cf1e95f065843bf3acd17037c3e9a2becd4",
+                "sha256:728607e34d60456d736cc7991fd236afb828b21b82f956c5ea75f94c8414040a"
+            ],
+            "index": "pypi",
+            "version": "==0.4.3"
+        },
         "sphinxcontrib-applehelp": {
             "hashes": [
                 "sha256:edaa0ab2b2bc74403149cb0209d6775c96de797dfd5b5e2a71981309efab3897",

api/main.py

@@ -1,5 +1,4 @@
 import json
-import subprocess
 import pynetbox
 
 from uuid import uuid4
@@ -9,6 +8,7 @@ from flask import Flask, request
 from flask_restful import Resource, Api
 
 from common import counters
+from common.vm import VMStatus
 from common.request import RequestEntry, RequestType
 from config import (etcd_client, request_pool, vm_pool, host_pool, env_vars, image_storage_handler)
 from . import schemas
@@ -42,7 +42,7 @@ class CreateVM(Resource):
                 "owner_realm": data["realm"],
                 "specs": specs,
                 "hostname": "",
-                "status": "",
+                "status": VMStatus.stopped,
                 "image_uuid": validator.image_uuid,
                 "log": [],
                 "vnc_socket": "",

common/vm.py

@@ -6,25 +6,9 @@ from .classes import SpecificEtcdEntryBase
 
 
 class VMStatus:
-    # Must be only assigned to brand new VM
-    requested_new = "REQUESTED_NEW"
-
-    # Only Assigned to already created vm
-    requested_start = "REQUESTED_START"
-
-    # These all are for running vms
-    requested_shutdown = "REQUESTED_SHUTDOWN"
-    requested_migrate = "REQUESTED_MIGRATE"
-    requested_delete = "REQUESTED_DELETE"
-    # either its image is not found or user requested
-    # to delete it
-    deleted = "DELETED"
-
     stopped = "STOPPED"  # After requested_shutdown
     killed = "KILLED"  # either host died or vm died itself
-
     running = "RUNNING"
-
     error = "ERROR"  # An error occurred that cannot be resolved automatically
 
 

docs/source/conf.py

@@ -27,7 +27,8 @@ author = 'ungleich'
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
-    'sphinx.ext.autodoc'
+    'sphinx.ext.autodoc',
+    'sphinx_rtd_theme',
 ]
 
 # Add any paths that contain templates here, relative to this directory.
@@ -43,7 +44,8 @@ exclude_patterns = []
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-html_theme = 'alabaster'
+
+html_theme = "sphinx_rtd_theme"
 
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,

docs/source/introduction/installation.rst

@@ -11,6 +11,8 @@ Installation
 
 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.
 
@@ -196,34 +198,3 @@ profile e.g *~/.profile*
 
 and run :code:`source ~/.profile`
 
-
-Arch
------
-
-.. code-block:: sh
-
-    # Update/Upgrade
-    pacman -Syuu
-    pacman -S python3 qemu chrony python-pip
-
-    pip3 install pipenv
-
-    cat > /etc/chrony.conf << EOF
-    server 0.arch.pool.ntp.org
-    server 1.arch.pool.ntp.org
-    server 2.arch.pool.ntp.org
-    EOF
-
-    systemctl start chronyd
-    systemctl enable chronyd
-
-    # Create non-root user and allow it sudo access
-    # without password
-    useradd -m ucloud
-    echo "ucloud ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
-
-    sudo -H -u ucloud bash -c 'cd /home/ucloud && git clone https://aur.archlinux.org/yay.git && cd yay && makepkg -si'
-    sudo -H -u ucloud bash -c 'yay -S etcd'
-
-    systemctl start etcd
-    systemctl enable etcd

docs/source/misc/todo.rst

@@ -1,19 +1,32 @@
 TODO
 ====
 
+Security
+--------
+
 * **Check Authentication:** Nico reported that some endpoints
-  even work without providing token. (ListUserVM)
+  even work without providing token. (e.g ListUserVM)
+
+Refactoring/Feature
+-------------------
 
 * Put overrides for **IMAGE_BASE**, **VM_BASE** in **ImageStorageHandler**.
-
-* Put "Always use only one StorageHandler"
-
+* Expose more details in ListUserFiles.
+* Throw KeyError instead of returning None when some key is not found in etcd.
 * Create Network Manager
     * That would handle tasks like up/down an interface
     * Create VXLANs, Bridges, TAPs.
     * Remove them when they are no longer used.
 
-* Check for :code:`etcd3.exceptions.ConnectionFailedError` when calling some etcd operation to
-  avoid crashing whole application.
-* Throw KeyError instead of returning None when some key is not found in etcd.
-* Expose more details in ListUserFiles.
+Reliability
+-----------
+
+* What to do if some command hangs forever? e.g CEPH commands
+  :code:`rbd ls ssd` etc. hangs forever if CEPH isn't running
+  or not responding.
+* What to do if etcd goes down?
+
+Misc.
+-----
+
+* Put "Always use only one StorageHandler"

docs/source/usage/usage-for-users.rst

@@ -69,21 +69,49 @@ Then, launch your remote desktop client and connect to vnc://localhost:1234.
 Create Network
 --------------
 
+Layer 2 Network with sample IPv6 range fd00::/64 (without IPAM and routing)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 .. code-block:: sh
 
     ucloud-cli network create --network-name mynet --network-type vxlan
 
 
-.. code-block:: json
+Layer 2 Network with /64 network with automatic IPAM
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.. code-block:: sh
 
-    {
-        "message": "Network successfully added."
-    }
+    ucloud-cli network create --network-name mynet --network-type vxlan --user True
 
-Create VM using this network
+Attach Network to VM
+--------------------
+
+Currently, user can only attach network to his/her VM at
+the time of creation. A sample command to create VM with
+a network is as follow
 
 .. code-block:: sh
 
     ucloud-cli vm create --vm-name meow2 --cpu 1 --ram '1gb' --os-ssd '4gb' --image images:alpine --network mynet
 
+.. _get-list-of-hosts:
 
+Get List of Hosts
+-----------------
+
+.. code-block:: sh
+
+    ucloud-cli host list
+
+
+Migrate VM
+----------
+
+.. code-block:: sh
+
+    ucloud-cli vm migrate --vm-name meow --destination server1.place10
+
+
+.. option:: --destination
+
+   The name of destination host. You can find a list of host
+   using :ref:`get-list-of-hosts`

host/main.py

@@ -108,7 +108,7 @@ def main(hostname):
 
             # If the event is directed toward me OR I am destination of a InitVMMigration
             if request_event.hostname == host.key or request_event.destination == host.key:
-                logger.debug("EVENT: %s", request_event)
+                logger.debug("VM Request: %s", request_event)
 
                 request_pool.client.client.delete(request_event.key)
                 vm_entry = vm_pool.get(request_event.uuid)

host/virtualmachine.py

@@ -114,14 +114,15 @@ def get_start_command_args(vm_entry, vnc_sock_filename: str, migration=False, mi
     vm_uuid = vm_entry.uuid
     vm_networks = vm_entry.network
 
-    command = "-drive file={},format=raw,if=virtio,cache=none".format(
+    command = "-name {}_{}".format(vm_entry.owner, vm_entry.name)
+
+    command += " -drive file={},format=raw,if=virtio,cache=none".format(
         image_storage_handler.qemu_path_string(vm_uuid)
     )
     command += " -device virtio-rng-pci -vnc unix:{}".format(vnc_sock_filename)
     command += " -m {} -smp cores={},threads={}".format(
         vm_memory, vm_cpus, threads_per_core
     )
-    command += " -name {}".format(vm_uuid)
 
     if migration:
         command += " -incoming tcp:[::]:{}".format(migration_port)
@@ -198,7 +199,7 @@ def create(vm_entry: VMEntry):
         vm_hdd = int(bitmath.parse_string_unsafe(vm_entry.specs["os-ssd"]).to_MB())
         if image_storage_handler.make_vm_image(src=vm_entry.image_uuid, dest=vm_entry.uuid):
             if not image_storage_handler.resize_vm_image(path=vm_entry.uuid, size=vm_hdd):
-                vm_entry.status = "ERROR"
+                vm_entry.status = VMStatus.error
             else:
                 logger.info("New VM Created")
 
@@ -208,9 +209,10 @@ def start(vm_entry: VMEntry, destination_host_key=None, migration_port=None):
 
     # VM already running. No need to proceed further.
     if _vm:
-        logger.info("VM %s already running", vm_entry.uuid)
+        logger.info("VM %s already running" % vm_entry.uuid)
         return
     else:
+        logger.info("Trying to start %s" % vm_entry.uuid)
         if destination_host_key:
             launch_vm(vm_entry, migration=True, migration_port=migration_port,
                       destination_host_key=destination_host_key)
@@ -288,7 +290,7 @@ def transfer(request_event):
 
 
 def launch_vm(vm_entry, migration=False, migration_port=None, destination_host_key=None):
-    logger.info("Starting %s", vm_entry.key)
+    logger.info("Starting %s" % vm_entry.key)
 
     vm = create_vm_object(vm_entry, migration=migration, migration_port=migration_port)
     try:

scheduler/main.py

@@ -82,7 +82,7 @@ def main():
                     try:
                         assign_host(vm_entry)
                     except NoSuitableHostFound:
-                        vm_entry.log.append("Can't schedule VM. No Resource Left.")
+                        vm_entry.add_log("Can't schedule VM. No Resource Left.")
                         vm_pool.put(vm_entry)
 
                         pending_vms.append(vm_entry)