Getting Started With Azure

New in version 2014.1.0.

Azure is a cloud service by Microsoft providing virtual machines, SQL services, media services, and more. This document describes how to use Salt Cloud to create a virtual machine on Azure, with Salt installed.

More information about Azure is located at http://www.windowsazure.com/.

Dependencies

Configuration

Set up the provider config at /etc/salt/cloud.providers.d/azure.conf:

# Note: This example is for /etc/salt/cloud.providers.d/azure.conf

my-azure-config:
  driver: azure
  subscription_id: 3287abc8-f98a-c678-3bde-326766fd3617
  certificate_path: /etc/salt/azure.pem

  # Set up the location of the salt master
  #
  minion:
    master: saltmaster.example.com

  # Optional
  management_host: management.core.windows.net

The certificate used must be generated by the user. OpenSSL can be used to create the management certificates. Two certificates are needed: a .cer file, which is uploaded to Azure, and a .pem file, which is stored locally.

To create the .pem file, execute the following command:

openssl req -x509 -nodes -days 365 -newkey rsa:1024 -keyout /etc/salt/azure.pem -out /etc/salt/azure.pem

To create the .cer file, execute the following command:

openssl x509 -inform pem -in /etc/salt/azure.pem -outform der -out /etc/salt/azure.cer

After creating these files, the .cer file will need to be uploaded to Azure via the "Upload a Management Certificate" action of the "Management Certificates" tab within the "Settings" section of the management portal.

Optionally, a management_host may be configured, if necessary for the region.

Note

Changed in version 2015.8.0.

The provider parameter in cloud provider definitions was renamed to driver. This change was made to avoid confusion with the provider parameter that is used in cloud profile definitions. Cloud provider definitions now use driver to refer to the Salt cloud module that provides the underlying functionality to connect to a cloud host, while cloud profiles continue to use provider to refer to provider configurations that you define.

Cloud Profiles

Set up an initial profile at /etc/salt/cloud.profiles:

azure-ubuntu:
  provider: my-azure-config
  image: 'b39f27a8b8c64d52b05eac6a62ebad85__Ubuntu-12_04_3-LTS-amd64-server-20131003-en-us-30GB'
  size: Small
  location: 'East US'
  ssh_username: azureuser
  ssh_password: verybadpass
  slot: production
  media_link: 'http://portalvhdabcdefghijklmn.blob.core.windows.net/vhds'
  virtual_network_name: azure-virtual-network
  subnet_name: azure-subnet

These options are described in more detail below. Once configured, the profile can be realized with a salt command:

salt-cloud -p azure-ubuntu newinstance

This will create an salt minion instance named newinstance in Azure. If the command was executed on the salt-master, its Salt key will automatically be signed on the master.

Once the instance has been created with salt-minion installed, connectivity to it can be verified with Salt:

salt newinstance test.ping

Profile Options

The following options are currently available for Azure.

provider

The name of the provider as configured in /etc/salt/cloud.providers.d/azure.conf.

image

The name of the image to use to create a VM. Available images can be viewed using the following command:

salt-cloud --list-images my-azure-config

size

The name of the size to use to create a VM. Available sizes can be viewed using the following command:

salt-cloud --list-sizes my-azure-config

location

The name of the location to create a VM in. Available locations can be viewed using the following command:

salt-cloud --list-locations my-azure-config

affinity_group

The name of the affinity group to create a VM in. Either a location or an affinity_group may be specified, but not both. See Affinity Groups below.

ssh_username

The user to use to log into the newly-created VM to install Salt.

ssh_password

The password to use to log into the newly-created VM to install Salt.

slot

The environment to which the hosted service is deployed. Valid values are staging or production. When set to production, the resulting URL of the new VM will be <vm_name>.cloudapp.net. When set to staging, the resulting URL will contain a generated hash instead.

service_name

The name of the service in which to create the VM. If this is not specified, then a service will be created with the same name as the VM.

virtual_network_name

Optional. The name of the virtual network for the VM to join. If this is not specified, then no virtual network will be joined.

subnet_name

Optional. The name of the subnet in the virtual network for the VM to join. Requires that a virtual_network_name is specified.

Show Instance

This action is a thin wrapper around --full-query, which displays details on a single instance only. In an environment with several machines, this will save a user from having to sort through all instance data, just to examine a single instance.

salt-cloud -a show_instance myinstance

Destroying VMs

There are certain options which can be specified in the global cloud configuration file (usually /etc/salt/cloud) which affect Salt Cloud's behavior when a VM is destroyed.

cleanup_disks

New in version 2015.8.0.

Default is False. When set to True, Salt Cloud will wait for the VM to be destroyed, then attempt to destroy the main disk that is associated with the VM.

cleanup_vhds

New in version 2015.8.0.

Default is False. Requires cleanup_disks to be set to True. When also set to True, Salt Cloud will ask Azure to delete the VHD associated with the disk that is also destroyed.

cleanup_services

New in version 2015.8.0.

Default is False. Requires cleanup_disks to be set to True. When also set to True, Salt Cloud will wait for the disk to be destroyed, then attempt to remove the service that is associated with the VM. Because the disk belongs to the service, the disk must be destroyed before the service can be.

Managing Hosted Services

New in version 2015.8.0.

An account can have one or more hosted services. A hosted service is required in order to create a VM. However, as mentioned above, if a hosted service is not specified when a VM is created, then one will automatically be created with the name of the name. The following functions are also available.

create_service

Create a hosted service. The following options are available.

name

Required. The name of the hosted service to create.

label

Required. A label to apply to the hosted service.

description

Optional. A longer description of the hosted service.

location

Required, if affinity_group is not set. The location in which to create the hosted service. Either the location or the affinity_group must be set, but not both.

affinity_group

Required, if location is not set. The affinity group in which to create the hosted service. Either the location or the affinity_group must be set, but not both.

extended_properties

Optional. Dictionary containing name/value pairs of hosted service properties. You can have a maximum of 50 extended property name/value pairs. The maximum length of the Name element is 64 characters, only alphanumeric characters and underscores are valid in the Name, and the name must start with a letter. The value has a maximum length of 255 characters.

CLI Example

The following example illustrates creating a hosted service.

salt-cloud -f create_service my-azure name=my-service label=my-service location='West US'

show_service

Return details about a specific hosted service. Can also be called with get_service.

salt-cloud -f show_storage my-azure name=my-service

list_services

List all hosted services associates with the subscription.

salt-cloud -f list_services my-azure-config

delete_service

Delete a specific hosted service.

salt-cloud -f delete_service my-azure name=my-service

Managing Storage Accounts

New in version 2015.8.0.

Salt Cloud can manage storage accounts associated with the account. The following functions are available. Deprecated marked as deprecated are marked as such as per the SDK documentation, but are still included for completeness with the SDK.

create_storage

Create a storage account. The following options are supported.

name

Required. The name of the storage account to create.

label

Required. A label to apply to the storage account.

description

Optional. A longer description of the storage account.

location

Required, if affinity_group is not set. The location in which to create the storage account. Either the location or the affinity_group must be set, but not both.

affinity_group

Required, if location is not set. The affinity group in which to create the storage account. Either the location or the affinity_group must be set, but not both.

extended_properties

Optional. Dictionary containing name/value pairs of storage account properties. You can have a maximum of 50 extended property name/value pairs. The maximum length of the Name element is 64 characters, only alphanumeric characters and underscores are valid in the Name, and the name must start with a letter. The value has a maximum length of 255 characters.

geo_replication_enabled

Deprecated. Replaced by the account_type parameter.

account_type

Specifies whether the account supports locally-redundant storage, geo-redundant storage, zone-redundant storage, or read access geo-redundant storage. Possible values are:

  • Standard_LRS
  • Standard_ZRS
  • Standard_GRS
  • Standard_RAGRS

CLI Example

The following example illustrates creating a storage account.

salt-cloud -f create_storage my-azure name=my-storage label=my-storage location='West US'

list_storage

List all storage accounts associates with the subscription.

salt-cloud -f list_storage my-azure-config

show_storage

Return details about a specific storage account. Can also be called with get_storage.

salt-cloud -f show_storage my-azure name=my-storage

update_storage

Update details concerning a storage account. Any of the options available in create_storage can be used, but the name cannot be changed.

salt-cloud -f update_storage my-azure name=my-storage label=my-storage

delete_storage

Delete a specific storage account.

salt-cloud -f delete_storage my-azure name=my-storage

show_storage_keys

Returns the primary and secondary access keys for the specified storage account.

salt-cloud -f show_storage_keys my-azure name=my-storage

regenerate_storage_keys

Regenerate storage account keys. Requires a key_type ("primary" or "secondary") to be specified.

salt-cloud -f regenerate_storage_keys my-azure name=my-storage key_type=primary

Managing Disks

New in version 2015.8.0.

When a VM is created, a disk will also be created for it. The following functions are available for managing disks. Deprecated marked as deprecated are marked as such as per the SDK documentation, but are still included for completeness with the SDK.

show_disk

Return details about a specific disk. Can also be called with get_disk.

salt-cloud -f show_disk my-azure name=my-disk

list_disks

List all disks associates with the account.

salt-cloud -f list_disks my-azure

update_disk

Update details for a disk. The following options are available.

name

Required. The name of the disk to update.

has_operating_system

Deprecated.

label

Required. The label for the disk.

media_link

Deprecated. The location of the disk in the account, including the storage container that it is in. This should not need to be changed.

new_name

Deprecated. If renaming the disk, the new name.

os

Deprecated.

CLI Example

The following example illustrates updating a disk.

salt-cloud -f update_disk my-azure name=my-disk label=my-disk

delete_disk

Delete a specific disk.

salt-cloud -f delete_disk my-azure name=my-disk

Managing Service Certificates

New in version 2015.8.0.

Stored at the cloud service level, these certificates are used by your deployed services. For more information on service certificates, see the following link:

The following functions are available.

list_service_certificates

List service certificates associated with the account.

salt-cloud -f list_service_certificates my-azure

show_service_certificate

Show the data for a specific service certificate associated with the account. The name, thumbprint, and thumbalgorithm can be obtained from list_service_certificates. Can also be called with get_service_certificate.

salt-cloud -f show_service_certificate my-azure name=my_service_certificate \
    thumbalgorithm=sha1 thumbprint=0123456789ABCDEF

add_service_certificate

Add a service certificate to the account. This requires that a certificate already exists, which is then added to the account. For more information on creating the certificate itself, see:

The following options are available.

name

Required. The name of the hosted service that the certificate will belong to.

data

Required. The base-64 encoded form of the pfx file.

certificate_format

Required. The service certificate format. The only supported value is pfx.

password

The certificate password.

salt-cloud -f add_service_certificate my-azure name=my-cert \
    data='...CERT_DATA...' certificate_format=pfx password=verybadpass

delete_service_certificate

Delete a service certificate from the account. The name, thumbprint, and thumbalgorithm can be obtained from list_service_certificates.

salt-cloud -f delete_service_certificate my-azure \
    name=my_service_certificate \
    thumbalgorithm=sha1 thumbprint=0123456789ABCDEF

Managing Management Certificates

New in version 2015.8.0.

A Azure management certificate is an X.509 v3 certificate used to authenticate an agent, such as Visual Studio Tools for Windows Azure or a client application that uses the Service Management API, acting on behalf of the subscription owner to manage subscription resources. Azure management certificates are uploaded to Azure and stored at the subscription level. The management certificate store can hold up to 100 certificates per subscription. These certificates are used to authenticate your Windows Azure deployment.

For more information on management certificates, see the following link.

The following functions are available.

list_management_certificates

List management certificates associated with the account.

salt-cloud -f list_management_certificates my-azure

show_management_certificate

Show the data for a specific management certificate associated with the account. The name, thumbprint, and thumbalgorithm can be obtained from list_management_certificates. Can also be called with get_management_certificate.

salt-cloud -f show_management_certificate my-azure name=my_management_certificate \
    thumbalgorithm=sha1 thumbprint=0123456789ABCDEF

add_management_certificate

Management certificates must have a key length of at least 2048 bits and should reside in the Personal certificate store. When the certificate is installed on the client, it should contain the private key of the certificate. To upload to the certificate to the Microsoft Azure Management Portal, you must export it as a .cer format file that does not contain the private key. For more information on creating management certificates, see the following link:

The following options are available.

public_key

A base64 representation of the management certificate public key.

thumbprint

The thumb print that uniquely identifies the management certificate.

data

The certificate's raw data in base-64 encoded .cer format.

salt-cloud -f add_management_certificate my-azure public_key='...PUBKEY...' \
    thumbprint=0123456789ABCDEF data='...CERT_DATA...'

delete_management_certificate

Delete a management certificate from the account. The thumbprint can be obtained from list_management_certificates.

salt-cloud -f delete_management_certificate my-azure thumbprint=0123456789ABCDEF

Virtual Network Management

New in version 2015.8.0.

The following are functions for managing virtual networks.

list_virtual_networks

List input endpoints associated with the deployment.

salt-cloud -f list_virtual_networks my-azure service=myservice deployment=mydeployment

Managing Input Endpoints

New in version 2015.8.0.

Input endpoints are used to manage port access for roles. Because endpoints cannot be managed by the Azure Python SDK, Salt Cloud uses the API directly. With versions of Python before 2.7.9, the requests-python package needs to be installed in order for this to work. Additionally, the following needs to be set in the master's configuration file:

backend: requests

The following functions are available.

list_input_endpoints

List input endpoints associated with the deployment

salt-cloud -f list_input_endpoints my-azure service=myservice deployment=mydeployment

show_input_endpoint

Show an input endpoint associated with the deployment

salt-cloud -f show_input_endpoint my-azure service=myservice \
    deployment=mydeployment name=SSH

add_input_endpoint

Add an input endpoint to the deployment. Please note that there may be a delay before the changes show up. The following options are available.

service

Required. The name of the hosted service which the VM belongs to.

deployment

Required. The name of the deployment that the VM belongs to. If the VM was created with Salt Cloud, the deployment name probably matches the VM name.

role

Required. The name of the role that the VM belongs to. If the VM was created with Salt Cloud, the role name probably matches the VM name.

name

Required. The name of the input endpoint. This typically matches the port that the endpoint is set to. For instance, port 22 would be called SSH.

port

Required. The public (Internet-facing) port that is used for the endpoint.

local_port

Optional. The private port on the VM itself that will be matched with the port. This is typically the same as the port. If this value is not specified, it will be copied from port.

protocol

Required. Either tcp or udp.

enable_direct_server_return

Optional. If an internal load balancer exists in the account, it can be used with a direct server return. The default value is False. Please see the following article for an explanation of this option.

timeout_for_tcp_idle_connection

Optional. The default value is 4. Please see the following article for an explanation of this option.

CLI Example

The following example illustrates adding an input endpoint.

salt-cloud -f add_input_endpoint my-azure service=myservice \
    deployment=mydeployment role=myrole name=HTTP local_port=80 \
    port=80 protocol=tcp enable_direct_server_return=False \
    timeout_for_tcp_idle_connection=4

update_input_endpoint

Updates the details for a specific input endpoint. All options from add_input_endpoint are supported.

salt-cloud -f update_input_endpoint my-azure service=myservice \
    deployment=mydeployment role=myrole name=HTTP local_port=80 \
    port=80 protocol=tcp enable_direct_server_return=False \
    timeout_for_tcp_idle_connection=4

delete_input_endpoint

Delete an input endpoint from the deployment. Please note that there may be a delay before the changes show up. The following items are required.

CLI Example

The following example illustrates deleting an input endpoint.

service

The name of the hosted service which the VM belongs to.

deployment

The name of the deployment that the VM belongs to. If the VM was created with Salt Cloud, the deployment name probably matches the VM name.

role

The name of the role that the VM belongs to. If the VM was created with Salt Cloud, the role name probably matches the VM name.

name

The name of the input endpoint. This typically matches the port that the endpoint is set to. For instance, port 22 would be called SSH.

salt-cloud -f delete_input_endpoint my-azure service=myservice \
    deployment=mydeployment role=myrole name=HTTP

Managing Affinity Groups

New in version 2015.8.0.

Affinity groups allow you to group your Azure services to optimize performance. All services and VMs within an affinity group will be located in the same region. For more information on Affinity groups, see the following link:

The following functions are available.

list_affinity_groups

List input endpoints associated with the account

salt-cloud -f list_affinity_groups my-azure

show_affinity_group

Show an affinity group associated with the account

salt-cloud -f show_affinity_group my-azure service=myservice \
    deployment=mydeployment name=SSH

create_affinity_group

Create a new affinity group. The following options are supported.

name

Required. The name of the new affinity group.

location

Required. The region in which the affinity group lives.

label

Required. A label describing the new affinity group.

description

Optional. A longer description of the affinity group.

salt-cloud -f create_affinity_group my-azure name=my_affinity_group \
   label=my-affinity-group location='West US'

update_affinity_group

Update an affinity group's properties

salt-cloud -f update_affinity_group my-azure name=my_group label=my_group

delete_affinity_group

Delete a specific affinity group associated with the account

salt-cloud -f delete_affinity_group my-azure name=my_affinity_group

Managing Blob Storage

New in version 2015.8.0.

Azure storage containers and their contents can be managed with Salt Cloud. This is not as elegant as using one of the other available clients in Windows, but it benefits Linux and Unix users, as there are fewer options available on those platforms.

Blob Storage Configuration

Blob storage must be configured differently than the standard Azure configuration. Both a storage_account and a storage_key must be specified either through the Azure provider configuration (in addition to the other Azure configuration) or via the command line.

storage_account: mystorage
storage_key: ffhj334fDSGFEGDFGFDewr34fwfsFSDFwe==

storage_account

This is one of the storage accounts that is available via the list_storage function.

storage_key

Both a primary and a secondary storage_key can be obtained by running the show_storage_keys function. Either key may be used.

Blob Functions

The following functions are made available through Salt Cloud for managing blog storage.

make_blob_url

Creates the URL to access a blob

salt-cloud -f make_blob_url my-azure container=mycontainer blob=myblob
container

Name of the container.

blob

Name of the blob.

account

Name of the storage account. If not specified, derives the host base from the provider configuration.

protocol

Protocol to use: 'http' or 'https'. If not specified, derives the host base from the provider configuration.

host_base

Live host base URL. If not specified, derives the host base from the provider configuration.

list_storage_containers

List containers associated with the storage account

salt-cloud -f list_storage_containers my-azure

create_storage_container

Create a storage container

salt-cloud -f create_storage_container my-azure name=mycontainer
name

Name of container to create.

meta_name_values

Optional. A dict with name_value pairs to associate with the container as metadata. Example:{'Category':'test'}

blob_public_access

Optional. Possible values include: container, blob

fail_on_exist

Specify whether to throw an exception when the container exists.

show_storage_container

Show a container associated with the storage account

salt-cloud -f show_storage_container my-azure name=myservice
name

Name of container to show.

show_storage_container_metadata

Show a storage container's metadata

salt-cloud -f show_storage_container_metadata my-azure name=myservice
name

Name of container to show.

lease_id

If specified, show_storage_container_metadata only succeeds if the container's lease is active and matches this ID.

set_storage_container_metadata

Set a storage container's metadata

salt-cloud -f set_storage_container my-azure name=mycontainer \
    x_ms_meta_name_values='{"my_name": "my_value"}'
name

Name of existing container. meta_name_values ```````````` A dict containing name, value for metadata. Example: {'category':'test'} lease_id ```` If specified, set_storage_container_metadata only succeeds if the container's lease is active and matches this ID.

show_storage_container_acl

Show a storage container's acl

salt-cloud -f show_storage_container_acl my-azure name=myservice
name

Name of existing container.

lease_id

If specified, show_storage_container_acl only succeeds if the container's lease is active and matches this ID.

set_storage_container_acl

Set a storage container's acl

salt-cloud -f set_storage_container my-azure name=mycontainer
name

Name of existing container.

signed_identifiers

SignedIdentifers instance

blob_public_access

Optional. Possible values include: container, blob

lease_id

If specified, set_storage_container_acl only succeeds if the container's lease is active and matches this ID.

delete_storage_container

Delete a container associated with the storage account

salt-cloud -f delete_storage_container my-azure name=mycontainer
name

Name of container to create.

fail_not_exist

Specify whether to throw an exception when the container exists.

lease_id

If specified, delete_storage_container only succeeds if the container's lease is active and matches this ID.

lease_storage_container

Lease a container associated with the storage account

salt-cloud -f lease_storage_container my-azure name=mycontainer
name

Name of container to create.

lease_action

Required. Possible values: acquire|renew|release|break|change

lease_id

Required if the container has an active lease.

lease_duration

Specifies the duration of the lease, in seconds, or negative one (-1) for a lease that never expires. A non-infinite lease can be between 15 and 60 seconds. A lease duration cannot be changed using renew or change. For backwards compatibility, the default is 60, and the value is only used on an acquire operation.

lease_break_period

Optional. For a break operation, this is the proposed duration of seconds that the lease should continue before it is broken, between 0 and 60 seconds. This break period is only used if it is shorter than the time remaining on the lease. If longer, the time remaining on the lease is used. A new lease will not be available before the break period has expired, but the lease may be held for longer than the break period. If this header does not appear with a break operation, a fixed-duration lease breaks after the remaining lease period elapses, and an infinite lease breaks immediately.

proposed_lease_id

Optional for acquire, required for change. Proposed lease ID, in a GUID string format.

list_blobs

List blobs associated with the container

salt-cloud -f list_blobs my-azure container=mycontainer
container

The name of the storage container

prefix

Optional. Filters the results to return only blobs whose names begin with the specified prefix.

marker

Optional. A string value that identifies the portion of the list to be returned with the next list operation. The operation returns a marker value within the response body if the list returned was not complete. The marker value may then be used in a subsequent call to request the next set of list items. The marker value is opaque to the client.

maxresults

Optional. Specifies the maximum number of blobs to return, including all BlobPrefix elements. If the request does not specify maxresults or specifies a value greater than 5,000, the server will return up to 5,000 items. Setting maxresults to a value less than or equal to zero results in error response code 400 (Bad Request).

include

Optional. Specifies one or more datasets to include in the response. To specify more than one of these options on the URI, you must separate each option with a comma. Valid values are:

snapshots:
    Specifies that snapshots should be included in the
    enumeration. Snapshots are listed from oldest to newest in
    the response.
metadata:
    Specifies that blob metadata be returned in the response.
uncommittedblobs:
    Specifies that blobs for which blocks have been uploaded,
    but which have not been committed using Put Block List
    (REST API), be included in the response.
copy:
    Version 2012-02-12 and newer. Specifies that metadata
    related to any current or previous Copy Blob operation
    should be included in the response.
delimiter

Optional. When the request includes this parameter, the operation returns a BlobPrefix element in the response body that acts as a placeholder for all blobs whose names begin with the same substring up to the appearance of the delimiter character. The delimiter may be a single character or a string.

show_blob_service_properties

Show a blob's service properties

salt-cloud -f show_blob_service_properties my-azure

set_blob_service_properties

Sets the properties of a storage account's Blob service, including Windows Azure Storage Analytics. You can also use this operation to set the default request version for all incoming requests that do not have a version specified.

salt-cloud -f set_blob_service_properties my-azure
properties

a StorageServiceProperties object.

timeout

Optional. The timeout parameter is expressed in seconds.

show_blob_properties

Returns all user-defined metadata, standard HTTP properties, and system properties for the blob.

salt-cloud -f show_blob_properties my-azure container=mycontainer blob=myblob
container

Name of existing container.

blob

Name of existing blob.

lease_id

Required if the blob has an active lease.

set_blob_properties

Set a blob's properties

salt-cloud -f set_blob_properties my-azure
container

Name of existing container.

blob

Name of existing blob.

blob_cache_control

Optional. Modifies the cache control string for the blob.

blob_content_type

Optional. Sets the blob's content type.

blob_content_md5

Optional. Sets the blob's MD5 hash.

blob_content_encoding

Optional. Sets the blob's content encoding.

blob_content_language

Optional. Sets the blob's content language.

lease_id

Required if the blob has an active lease.

blob_content_disposition

Optional. Sets the blob's Content-Disposition header. The Content-Disposition response header field conveys additional information about how to process the response payload, and also can be used to attach additional metadata. For example, if set to attachment, it indicates that the user-agent should not display the response, but instead show a Save As dialog with a filename other than the blob name specified.

put_blob

Upload a blob

salt-cloud -f put_blob my-azure container=base name=top.sls blob_path=/srv/salt/top.sls
salt-cloud -f put_blob my-azure container=base name=content.txt blob_content='Some content'
container

Name of existing container.

name

Name of existing blob.

blob_path

The path on the local machine of the file to upload as a blob. Either this or blob_content must be specified.

blob_content

The actual content to be uploaded as a blob. Either this or blob_path must me specified.

cache_control

Optional. The Blob service stores this value but does not use or modify it.

content_language

Optional. Specifies the natural languages used by this resource.

content_md5

Optional. An MD5 hash of the blob content. This hash is used to verify the integrity of the blob during transport. When this header is specified, the storage service checks the hash that has arrived with the one that was sent. If the two hashes do not match, the operation will fail with error code 400 (Bad Request).

blob_content_type

Optional. Set the blob's content type.

blob_content_encoding

Optional. Set the blob's content encoding.

blob_content_language

Optional. Set the blob's content language.

blob_content_md5

Optional. Set the blob's MD5 hash.

blob_cache_control

Optional. Sets the blob's cache control.

meta_name_values

A dict containing name, value for metadata.

lease_id

Required if the blob has an active lease.

get_blob

Download a blob

salt-cloud -f get_blob my-azure container=base name=top.sls local_path=/srv/salt/top.sls
salt-cloud -f get_blob my-azure container=base name=content.txt return_content=True
container

Name of existing container.

name

Name of existing blob.

local_path

The path on the local machine to download the blob to. Either this or return_content must be specified.

return_content

Whether or not to return the content directly from the blob. If specified, must be True or False. Either this or the local_path must be specified.

snapshot

Optional. The snapshot parameter is an opaque DateTime value that, when present, specifies the blob snapshot to retrieve.

lease_id

Required if the blob has an active lease.

progress_callback

callback for progress with signature function(current, total) where current is the number of bytes transferred so far, and total is the size of the blob.

max_connections

Maximum number of parallel connections to use when the blob size exceeds 64MB. Set to 1 to download the blob chunks sequentially. Set to 2 or more to download the blob chunks in parallel. This uses more system resources but will download faster.

max_retries

Number of times to retry download of blob chunk if an error occurs.

retry_wait

Sleep time in secs between retries.