Remove Exoscale support due to CloudStack API deprecation (#14841)

* Remove Exoscale support due to CloudStack API deprecation (fixes #14839)

Exoscale deprecated their CloudStack API on May 1, 2024, migrating to a
proprietary API v2 that is incompatible with CloudStack-based tools.

Changes:
- Remove Exoscale as default CloudStack endpoint
- Add detection and clear error message for Exoscale endpoints
- Update documentation to remove Exoscale references
- Add recommendations for alternative providers
- Maintain generic CloudStack support for other providers

Users attempting to use Exoscale will now receive a helpful error message
explaining the situation and suggesting alternative providers with European
presence (Hetzner, DigitalOcean, Vultr, Scaleway).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

* Remove remaining Exoscale references from input.yml, README, and prompts

- Removed 'Exoscale optimised' label from CloudStack in input.yml
- Removed Exoscale mention from README.md provider list
- Removed Exoscale URL example from CloudStack API endpoint prompt

* Fix typo: 'API ssecret' -> 'API secret' in CloudStack prompt

---------

Co-authored-by: Claude <[email protected]>

Author: dguido

README.md

@@ -31,7 +31,7 @@ See our [release announcement](https://blog.trailofbits.com/2016/12/12/meet-algo
 
 The easiest way to get an Algo server running is to run it on your local system or from [Google Cloud Shell](docs/deploy-from-cloudshell.md) and let it set up a _new_ virtual machine in the cloud for you.
 
-1. **Setup an account on a cloud hosting provider.** Algo supports [DigitalOcean](https://m.do.co/c/4d7f4ff9cfe4) (most user friendly), [Amazon Lightsail](https://aws.amazon.com/lightsail/), [Amazon EC2](https://aws.amazon.com/), [Vultr](https://www.vultr.com/), [Microsoft Azure](https://azure.microsoft.com/), [Google Compute Engine](https://cloud.google.com/compute/), [Scaleway](https://www.scaleway.com/), [DreamCompute](https://www.dreamhost.com/cloud/computing/), [Linode](https://www.linode.com) other OpenStack-based cloud hosting, [Exoscale](https://www.exoscale.com) or other CloudStack-based cloud hosting, or [Hetzner Cloud](https://www.hetzner.com/).
+1. **Setup an account on a cloud hosting provider.** Algo supports [DigitalOcean](https://m.do.co/c/4d7f4ff9cfe4) (most user friendly), [Amazon Lightsail](https://aws.amazon.com/lightsail/), [Amazon EC2](https://aws.amazon.com/), [Vultr](https://www.vultr.com/), [Microsoft Azure](https://azure.microsoft.com/), [Google Compute Engine](https://cloud.google.com/compute/), [Scaleway](https://www.scaleway.com/), [DreamCompute](https://www.dreamhost.com/cloud/computing/), [Linode](https://www.linode.com), other OpenStack-based cloud hosting, CloudStack-based cloud hosting, or [Hetzner Cloud](https://www.hetzner.com/).
 
 2. **Get a copy of Algo.** The Algo scripts will be run from your local system. There are two ways to get a copy:
 

docs/cloud-amazon-ec2.md

@@ -90,7 +90,7 @@ $ ./algo
     7. Vultr
     8. Scaleway
     9. OpenStack (DreamCompute optimised)
-    10. CloudStack (Exoscale optimised)
+    10. CloudStack
     11. Linode
     12. Install to existing Ubuntu server (for more advanced users)
 

docs/cloud-cloudstack.md

@@ -1,11 +1,15 @@
 ### Configuration file
 
-Algo scripts will ask you for the API detail. You need to fetch the API credentials and the endpoint from the provider control panel.
+> **⚠️ Important Note:** Exoscale is no longer supported as they deprecated their CloudStack API on May 1, 2024. Please use alternative providers like Hetzner, DigitalOcean, Vultr, or Scaleway.
 
-Example for Exoscale (European cloud provider exposing CloudStack API), visit https://portal.exoscale.com/u/<your@account>/account/profile/api to gather the required information: CloudStack api key and secret.
+Algo scripts will ask you for the API details. You need to fetch the API credentials and the endpoint from your CloudStack provider's control panel.
+
+For CloudStack providers, you'll need to set:
 
 ```bash
 export CLOUDSTACK_KEY="<your api key>"
 export CLOUDSTACK_SECRET="<your secret>"
-export CLOUDSTACK_ENDPOINT="https://api.exoscale.com/compute"
+export CLOUDSTACK_ENDPOINT="<your provider's API endpoint>"
 ```
+
+Make sure your provider supports the CloudStack API. Contact your provider for the correct API endpoint URL.

docs/deploy-from-ansible.md

@@ -291,11 +291,13 @@ You need to source the rc file prior to run Algo. Download it from the OpenStack
 
 ### CloudStack
 
+> **Note:** Exoscale is no longer supported as they deprecated their CloudStack API on May 1, 2024.
+
 Required variables:
 
 - [cs_config](https://trailofbits.github.io/algo/cloud-cloudstack.html): /path/to/.cloudstack.ini
-- cs_region: e.g. `exoscale`
-- cs_zones: e.g. `ch-gva2`
+- cs_region: your CloudStack region
+- cs_zones: your CloudStack zone
 
 The first two can also be defined in your environment, using the variables `CLOUDSTACK_CONFIG` and `CLOUDSTACK_REGION`.
 

input.yml

@@ -20,7 +20,7 @@
       - { name: Vultr, alias: vultr }
       - { name: Scaleway, alias: scaleway }
       - { name: OpenStack (DreamCompute optimised), alias: openstack }
-      - { name: CloudStack (Exoscale optimised), alias: cloudstack }
+      - { name: CloudStack, alias: cloudstack }
       - { name: Linode, alias: linode }
       - { name: Install to existing Ubuntu latest LTS server (for more advanced users), alias: local }
   vars_files:

roles/cloud-cloudstack/tasks/prompts.yml

@@ -12,7 +12,7 @@
 
     - pause:
         prompt: |
-          Enter the API ssecret (https://trailofbits.github.io/algo/cloud-cloudstack.html):
+          Enter the API secret (https://trailofbits.github.io/algo/cloud-cloudstack.html):
         echo: false
       register: _cs_secret
       when:
@@ -23,7 +23,6 @@
     - pause:
         prompt: |
           Enter the API endpoint (https://trailofbits.github.io/algo/cloud-cloudstack.html)
-          [https://api.exoscale.com/compute]
       register: _cs_url
       when:
         - cs_url is undefined
@@ -34,10 +33,26 @@
         algo_cs_token: "{{ cs_secret | default(_cs_secret.user_input | default(None)) | default(lookup('env', 'CLOUDSTACK_SECRET'), true) }}"
         algo_cs_url: >-
           {{ cs_url | default(_cs_url.user_input|default(None)) |
-             default(lookup('env', 'CLOUDSTACK_ENDPOINT'), true) |
-             default('https://api.exoscale.com/compute', true) }}
+             default(lookup('env', 'CLOUDSTACK_ENDPOINT'), true) }}
       no_log: true
 
+    - name: Check for Exoscale API endpoint
+      fail:
+        msg: |
+          ERROR: Exoscale CloudStack API has been deprecated as of May 1, 2024.
+
+          Exoscale has migrated from CloudStack to their proprietary API v2, which is not compatible
+          with CloudStack-based tools. Algo no longer supports Exoscale deployments.
+
+          Please consider these alternative providers:
+          - Hetzner (provider: hetzner) - German provider with European coverage
+          - DigitalOcean (provider: digitalocean) - Has Amsterdam and Frankfurt regions
+          - Vultr (provider: vultr) - Multiple European locations
+          - Scaleway (provider: scaleway) - French provider
+
+          If you're using a different CloudStack provider, please provide the correct API endpoint.
+      when: "'exoscale.com' in algo_cs_url or 'exoscale.ch' in algo_cs_url"
+
     - name: Get zones on cloud
       cs_zone_info:
       register: _cs_zones
@@ -53,10 +68,7 @@
 
     - name: Set the default zone
       set_fact:
-        default_zone: >-
-          {%- for z in cs_zones -%}
-          {%- if z['name'] == "ch-gva-2" %}{{ loop.index }}{% endif -%}
-          {%- endfor %}
+        default_zone: "1"  # Default to first zone in the list
 
     - pause:
         prompt: |