A python script to provision compute instances on Oracle Cloud Infrastructure (OCI) using the Python SDK.
This project illustrates the use of the OCI Python SDK to list, provision, start, shutdown and terminate OCI compute instances.
Interaction with OCI from the command line can easily be achieved using the OCI CLI. It is the perfect tool for most tasks, but handling output from the OCI CLI in shell scripts can be cumbersome for complex queries. The OCI Python SDK offers more flexibility but the API may seem complex at first. This project is a practical example of how to use the SDK for managing compute instances.
- A computer running Linux, macOS or Windows.
- Python version supported by the SDK.
- OCI CLI is not required, but will make your setup easier.
- A clone of this repository.
The preferred way of installing the oci-compute package is to install it in a Python virtual environment:
# Clone the repository
git clone https://github.com/oracle/ol-sample-scripts.git
cd ol-sample-script/oci-compute
# Create and activate the virtualenv
python3 -m venv venv
source venv/bin/activate
# Install the package
pip3 install .
# Package will be installed as venv/bin/oci-compute
./venv/bin/oci-compute --versionYou don't have activate the virtual environment to run oci-compute.
Alternatively you can install the package at user level or system wide. The latter is strongly discouraged as it can potentially update system libraries.
For a user level installation:
# Clone the repository
git clone https://github.com/oracle/ol-sample-scripts.git
cd ol-sample-script/oci-compute
# Install the package
pip3 install .
# Package will be installed in the user install directory for your platform. Typically ~/.local/
~/.local/bin/oci-compute --versionTo access your OCI environment you need to provide access Keys and OCIDs. The required configuration files are described in Tools Configuration.
The easiest way to have your environment properly configured is to install the OCI CLI and run:
oci setup configThe oci-compute script is using an rc file the same way the OCI CLI does. The default configuration file name is ~/.oci/oci_compute_rc. See Configuring the CLI for more information about syntax, sections and inheritance.
oci-compute command line options will source their default values from the rc file.
Rc file example:
[DEFAULT]
# Global defaults for oci-compute
compartment-id = ocid1.compartment.oc1..xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
shape = VM.Standard2.1
availability-domain = ad-3
vcn-name = MyVCN
ssh-authorized-keys-file = ~/.ssh/id_rsa.pub
[FREE_TIER]
# Overrides defaults for the free tier tenancy
compartment-id = ocid1.tenancy.oc1..yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy
shape = VM.Standard.E2.1.Micro
availability-domain = ad-1
vcn-name = VCN-Free
[DEVEL]
# Overrides for development images
market-image-name = Oracle Cloud Developer Image
shape = VM.Standard2.4
availability-domain = ad-2
Note that the sections must also exist in the ~/.oci/config configuration file (they can be empty as they will inherit their defaults from the DEFAULT section).
The script support the instance, list and provision commands:
$ oci-compute --help
Usage: oci-compute [OPTIONS] COMMAND [ARGS]...
Provision Oracle Cloud Infrastructure compute instances through the Python
SDK.
Options:
--version Show the version and exit.
-v, --verbose Verbose mode
--config-file PATH The path to the config file. [default: ~/.oci/config]
--profile TEXT The profile in the config file to load. [default:
DEFAULT]
--rc-file PATH The path to the OCI Provision specific configuration
file [default: ~/.oci/oci_compute_rc]
--help Show this message and exit.
Commands:
instance Manage compute instances.
list List available images.
provision Provision instance.
You can list/provision images from the following three sources:
- Platform Images: pre-built images for Oracle Cloud Infrastructure.
- Custom images: images created or imported into your Oracle Cloud Infrastructure environment.
- Marketplace Images: pre-built Oracle enterprise images and solutions as well as Trusted third-party images published by Oracle partners.
For the Marketplace images:- you will need to review and accept the terms of use for the image the first time you provision it.
- the script will only list/provision free of charge images.
$ oci-compute list --help
Usage: oci-compute list [OPTIONS] COMMAND [ARGS]...
List available images.
Options:
--help Show this message and exit.
Commands:
custom List Custom Images
market List free Marketplace Images
platform List Platform Images
The provision command accepts a --cloud-init-file parameter which will be run at instance provisioning.
The instance command allows you to list, start, shutdown and terminate instances:
$ oci-compute instance --help
Usage: oci-compute instance [OPTIONS] COMMAND [ARGS]...
Manage compute instances.
Options:
--help Show this message and exit.
Commands:
list List compute instances
shutdown Shutdown compute instances
start Start compute instances
terminate Terminate compute instances
$ oci-compute -v provision market --image-name 'Cloud Devel' --display-name dev --cloud-init-file ~/bin/oci-cloudinit.sh
+++ oci-compute: Retrieving Marketplace listing
oci-compute: Publisher : Oracle
oci-compute: Image : Oracle Cloud Developer Image
oci-compute: Description : An Oracle Linux 7-based image with the latest development tools, languages, Oracle Cloud Infrastructure Software Development Kits and Database connectors at your fingertips
+++ oci-compute: Retrieving listing details
oci-compute: Latest version : Oracle Cloud Developer Image 19.11
oci-compute: Released : 2019-11-21 00:00:00+00:00
+++ oci-compute: Checking agreements acceptance
oci-compute: This image is subject to the following agreement(s):
oci-compute: - I have reviewed and accept the <link>Oracle Standard Terms and Restrictions</link>
oci-compute: Link: https://cloudmarketplace.oracle.com/marketplace/content?contentId=18088784&render=inline
I have reviewed and accept the above agreement(s) [y/N]: y
oci-compute: Accepting agreement(s)
+++ oci-compute: Checking Application Catalog subscription
oci-compute: Already subscribed
+++ oci-compute: Image selected:
oci-compute: Name : OL Developer Image 19.11
oci-compute: Created : 2019-11-19 22:03:55.214000+00:00
oci-compute: Operating System : Custom
oci-compute: Operating System version : Custom
+++ oci-compute: Retrieving Availability Domain
oci-compute: Name : awqR:eu-amsterdam-1-AD-1
+++ oci-compute: Retrieving VCN
oci-compute: Name : MyVCN
+++ oci-compute: Retrieving subnet
oci-compute: Subnet : Public Subnet
+++ oci-compute: Creating and launching instance
oci-compute: Name : dev
oci-compute: State : RUNNING
oci-compute: Time created : 2020-03-23 10:12:44.617000+00:00
+++ oci-compute: Retrieving VNIC attachments
oci-compute: NIC attached - Index : 0
+++ oci-compute: Retrieving VNIC data
oci-compute: Private IP : 10.0.0.13
oci-compute: Public IP : xxx.xxx.xxx.xxx
+Instance provisioned----------+
| Private IP | 10.0.0.13 |
| Public IP | xxx.xxx.xxx.xxx |
+------------+-----------------+
$ ssh opc@xxx.xxx.xxx.xxx
Last login: Mon Mar 23 10:15:11 2020
[opc@dev ~]$ exit
logout
Connection to xxx.xxx.xxx.xxx closed.
$ oci-compute instance list
+Compute Instances---+-------------------------+---------+------------+-----------------+
| Name | AD | Time Created | State | Private IP | Public IP |
+-------------+------+-------------------------+---------+------------+-----------------+
| dev | AD-1 | 2020-03-23 10:12:44 UTC | Running | 10.0.0.13 | xxx.xxx.xxx.xxx |
+-------------+------+-------------------------+---------+------------+-----------------+
$ oci-compute instance terminate --display-name dev
+Instance: dev-------------------------+
| Created | 2020-03-23 10:12:44 UTC |
| Private IP | 10.0.0.13 |
| Public IP | 1xxx.xxx.xxx.xxx |
+------------+-------------------------+
Terminate this instance [y/N]: y
Termination requested
$