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https://github.com/mattrobenolt/ec2
Sugar on top of boto for accessing EC2 instances and security groups
https://github.com/mattrobenolt/ec2
Last synced: about 1 month ago
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Sugar on top of boto for accessing EC2 instances and security groups
- Host: GitHub
- URL: https://github.com/mattrobenolt/ec2
- Owner: mattrobenolt
- License: bsd-2-clause
- Created: 2012-07-31T22:59:10.000Z (about 12 years ago)
- Default Branch: master
- Last Pushed: 2014-05-07T08:12:18.000Z (over 10 years ago)
- Last Synced: 2024-06-19T02:01:27.872Z (3 months ago)
- Language: Python
- Homepage:
- Size: 509 KB
- Stars: 141
- Watchers: 11
- Forks: 13
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
- starred-awesome - ec2 - Sugar on top of boto for accessing EC2 instances and security groups (Python)
README
# Amazon EC2
Ever try to query for some instances with boto? It sucks.
```python
>>> import ec2
>>> ec2.instances.filter(state='running', name__startswith='production')
[...]
```
## Install
`$ pip install ec2`
## Usage
### AWS credentials
Credentials are defined as a global state, either through an environment variable, or in Python.
```python
ec2.credentials.ACCESS_KEY_ID = 'xxx'
ec2.credentials.SECRET_ACCESS_KEY = 'xxx'
ec2.credentials.REGION_NAME = 'us-west-2' # (optional) defaults to us-east-1
```
Credentials can also be loaded from a CSV file generated by Amazon's IAM.
**Note**: `REGION_NAME` still needs to be specified.
```python
ec2.credentials.from_file('credentials.csv')
```
## Querying
### All instances
```python
ec2.instances.all()
```
### All Security Groups
```python
ec2.security_groups.all()
```
### All Virtual Private Clouds
```python
ec2.vpcs.all()
```
### Filtering
*Filter style is based on Django's ORM*
All filters map directly to instance/security group properties.
```python
ec2.instances.filter(id='i-xxx') # Exact instance id
ec2.instances.filter(state='running') # Exact instance state
```
Filters will also dig into tags.
```python
ec2.instances.filter(name='production-web') # Exact "Name" tag
```
Filters support many types of comparisons, similar to Django's ORM filters.
```python
ec2.instances.filter(name__exact='production-web-01') # idential to `name='...'`
ec2.instances.filter(name__iexact='PRODUCTION-WEB-01') # Case insensitive "exact"
ec2.instances.filter(name__like=r'^production-web-\d+$') # Match against a regular expression
ec2.instances.filter(name__ilike=r'^production-web-\d+$') # Case insensitive "like"
ec2.instances.filter(name__contains='web') # Field contains the search string
ec2.instances.filter(name__icontains='WEB') # Case insensitive "contains"
ec2.instances.filter(name__startswith='production') # Fields starts with the search string
ec2.instances.filter(name__istartswith='PRODUCTION') # Case insensitive "startswith"
ec2.instances.filter(name__endswith='01') # Fields ends with the search string
ec2.instances.filter(name__iendswith='01') # Case insensitive "endswith"
ec2.instances.filter(name__isnull=False) # Match if the field exists
```
Filters can also be chained.
```python
ec2.instances.filter(state='running', name__startswith='production')
```
Filters can also be used with security groups.
```python
ec2.security_groups.filter(name__iexact='PRODUCTION-WEB')
```
Filters can also be used with virtual private clouds.
```python
ec2.vpcs.filter(cidr_blocks__startswith='10.10')
```
`get()` works exactly the same as `filter()`, except it returns just one instance and raises an exception for anything else.
```python
ec2.instances.get(name='production-web-01') # Return a single instance
ec2.instances.get(name='i-dont-exist') # Raises an `ec2.instances.DoesNotExist` exception
ec2.instances.get(name__like=r'^production-web-\d+$') # Raises an `ec2.instances.MultipleObjectsReturned` exception if matched more than one instance
ec2.security_groups.get(name__startswith='production') # Raises an `ec2.security_groups.MultipleObjectsReturned` exception
ec2.vpcs.get(cidr_block='10.10.0.0/16')
```
### Search fields
#### Instances
* id *(Instance id)*
* state *(running, terminated, pending, shutting-down, stopping, stopped)*
* public_dns_name
* ip_address
* private_dns_name
* private_ip_address
* root_device_type *(ebs, instance-store)*
* key_name *(name of the SSH key used on the instance)*
* image_id *(Id of the AMI)*
All fields can be found at: https://github.com/boto/boto/blob/d91ed8/boto/ec2/instance.py#L157-204
#### Security Groups
* id *(Security Group id)*
* name
* vpc_id
#### Virtual Private Clouds
* id *(Virtual Private Cloud id)*
* cidr_block *(CIDR Network Block of the VPC)*
* state *(Current state of the VPC, creation is not instant)*
* is_default
* instance_tenancy
* dhcp_options_id *(DHCP options id)*
## Examples
### Get public ip addresses from all running instances who are named production-web-{number}
```python
import ec2
ec2.credentials.ACCESS_KEY_ID = 'xxx'
ec2.credentials.SECRET_ACCESS_KEY = 'xxx'
for instance in ec2.instances.filter(state='running', name__like=r'^production-web-\d+$'):
print instance.ip_address
```
### Add a role to a security group
```python
import ec2
ec2.credentials.ACCESS_KEY_ID = 'xxx'
ec2.credentials.SECRET_ACCESS_KEY = 'xxx'
try:
group = ec2.security_groups.get(name='production-web')
except ec2.security_groups.DoesNotExist:
import sys
sys.stderr.write('Not found.')
sys.exit(1)
group.authorize('tcp', 80, 80, cidr_ip='0.0.0.0/0')
```