docs: Remove references to to previous named ansible collection cloudalchemy

The repository is a migration from https://github.com/cloudalchemy/ansible-node-exporter.
The previous repository has been marked as archived already.

Signed-off-by: Andy Grunwald <andygrunwald@gmail.com>

roles/alertmanager/defaults/main.yml

@@ -55,7 +55,7 @@ alertmanager_cluster:
 #   listen-address: "{{ ansible_default_ipv4.address }}:6783"
 #   peers:
 #     - "{{ ansible_default_ipv4.address }}:6783"
-#     - "demo.cloudalchemy.org:6783"
+#     - "alertmanager.demo.do.prometheus.io:6783"
 
 alertmanager_receivers: []
 # alertmanager_receivers:

roles/alertmanager/molecule/alternative/converge.yml

@@ -32,4 +32,4 @@
       listen-address: "127.0.0.1:6783"
       peers:
         - "127.0.0.1:6783"
-        - "demo.cloudalchemy.org:6783"
+        - "alertmanager.demo.do.prometheus.io:6783"

roles/blackbox_exporter/README.md

@@ -31,7 +31,7 @@ All variables which can be overridden are stored in [defaults/main.yml](defaults
 - hosts: all
   become: true
   roles:
-    - cloudalchemy.blackbox-exporter
+    - prometheus.prometheus.blackbox-exporter
 ```
 
 ### Demo site

roles/node_exporter/README.md

@@ -2,10 +2,6 @@
 
 # Ansible Role: node exporter
 
-## Warning
-
-Due to limitations of galaxy.ansible.com we had to move the role to https://galaxy.ansible.com/cloudalchemy/node_exporter and use `_` instead of `-` in role name. This is a breaking change and unfortunately, it affects all versions of node_exporter role as ansible galaxy doesn't offer any form of redirection. We are sorry for the inconvenience.
-
 ## Description
 
 Deploy prometheus [node exporter](https://github.com/prometheus/node_exporter) using ansible.
@@ -43,7 +39,7 @@ Use it in a playbook as follows:
 ```yaml
 - hosts: all
   roles:
-    - cloudalchemy.node_exporter
+    - prometheus.prometheus.node_exporter
 ```
 
 ### TLS config
@@ -66,7 +62,7 @@ Before running node_exporter role, the user needs to provision their own certifi
         privatekey_path: /etc/node_exporter/tls.key
         provider: selfsigned
   roles:
-    - cloudalchemy.node_exporter
+    - prometheus.prometheus.node_exporter
   vars:
     node_exporter_tls_server_config:
       cert_file: /etc/node_exporter/tls.cert

roles/prometheus/README.md

@@ -98,13 +98,13 @@ prometheus_scrape_configs:
 ---
 - hosts: all
   roles:
-  - cloudalchemy.prometheus
+  - prometheus.prometheus.prometheus
   vars:
     prometheus_targets:
       node:
       - targets:
         - localhost:9100
-        - demo.cloudalchemy.org:9100
+        - node.demo.do.prometheus.io
         labels:
           env: demosite
 ```

roles/prometheus/defaults/main.yml

@@ -58,7 +58,7 @@ prometheus_remote_write: []
 
 prometheus_remote_read: []
 # prometheus_remote_read:
-#   - url: https://demo.cloudalchemy.org:9201/read
+#   - url: https://prometheus.demo.do.prometheus.io:9201/read
 #     basic_auth:
 #       password: FOO
 

roles/prometheus/meta/argument_specs.yml

@@ -96,8 +96,7 @@ argument_specs:
           environment: "{{ ansible_fqdn | default(ansible_host) | default(inventory_hostname) }}"
       prometheus_targets:
         description:
-          - "Targets which will be scraped. Better example is provided in our
-             L(demo site,https://github.com/cloudalchemy/demo-site/blob/2a8a56fc10ce613d8b08dc8623230dace6704f9a/group_vars/all/vars#L8)"
+          - "Targets which will be scraped."
         type: "dict"
         elements: "str"
       prometheus_scrape_configs:

roles/prometheus/molecule/alternative/converge.yml

@@ -37,27 +37,27 @@
       scrape_timeout: 2s
       evaluation_interval: 10s
     prometheus_remote_write:
-      - url: http://influx.cloudalchemy.org:8086/api/v1/prom/write?db=test
+      - url: http://influx.example.org:8086/api/v1/prom/write?db=test
         basic_auth:
           username: prometheus
           password: SuperSecret
     prometheus_remote_read:
-      - url: http://influx.cloudalchemy.org:8086/api/v1/prom/read?db=cloudalchemy
+      - url: http://influx.example.org:8086/api/v1/prom/read?db=demo
     prometheus_external_labels:
       environment: "alternative"
     prometheus_targets:
       node:
         - targets:
-            - demo.cloudalchemy.org:9100
-            - influx.cloudalchemy.org:9100
+            - node.demo.do.prometheus.io
+            - influx.example.org:9100
           labels:
-            env: cloudalchemy
+            env: demo
       docker:
         - targets:
-            - demo.cloudalchemy.org:8080
-            - influx.cloudalchemy.org:8080
+            - demo.do.prometheus.io:8080
+            - influx.example.org:8080
           labels:
-            env: cloudalchemy
+            env: demo
     prometheus_scrape_configs:
       - job_name: "prometheus"
         metrics_path: "{{ prometheus_metrics_path }}"
@@ -78,8 +78,8 @@
           module: [http_2xx]
         static_configs:
           - targets:
-              - http://demo.cloudalchemy.org:9100
-              - http://influx.cloudalchemy.org:9100
+              - http://node.demo.do.prometheus.io
+              - http://influx.example.org:9100
         relabel_configs:
           - source_labels: [__address__]
             target_label: __param_target