fix some old links

Author: drbruced12

conf.py

@@ -102,9 +102,9 @@ def get_version():
     }
 
 # Ignore link check for the following websites
-# linkcheck_ignore = [
-#     'https://SDN.systemspproach.org/',
-# ]
+linkcheck_ignore = [
+     'https://www.amazon.com/','https://amzn.to/'
+]
 
 # -- Options for HTML output -------------------------------------------------
 

intro.rst

@@ -339,14 +339,16 @@ running in commodity switches. The microservice architecture is
 another example of disaggregation—it breaks monolithic cloud
 applications into a mesh of single-function components. Disaggregation
 is widely viewed as an essential step in accelerating feature velocity.
-This is the opportunity side of the story, which is nicely summarized
-by Weaveworks.
+This is the opportunity side of the story, which is one of the
+widely-claimed benefits of cloud-native application architectures. A
+useful, if opinionated, view on such architectures is the Twelve-Factor
+App.
 
 .. _reading_disaggregate:
 .. admonition:: Further Reading
 
-   Weaveworks. `What You Need to Know for Cloud Native
-   <https://www.weave.works/technologies/going-cloud-native-6-essential-things-you-need-to-know>`__.
+   Adam Wiggins. `The Twelve-Factor App.
+   <https://12factor.net/>`__.
 
 The challenge side of the story is that there are many more moving
 parts that have to be integrated, coordinated, and managed. Circling

lifecycle.rst

@@ -110,8 +110,8 @@ points throughout this chapter.
 .. _reading_gitops:
 .. admonition:: Further Reading
 
-   Weaveworks. `Guide to GitOps
-   <https://www.weave.works/technologies/gitops/>`__.
+   Red Hat. `An Illustrated Guide to GitOps
+   <https://www.redhat.com/architect/illustrated-guide-gitops/>`__.
 
 The third repository shown in :numref:`Figure %s <fig-pipeline>` is
 the Code Repo (on the far left). Although not explicitly indicated,
@@ -838,7 +838,7 @@ attack surface that needs to be protected.
    `git-crypt - transparent file encryption in git
    <https://github.com/AGWA/git-crypt/blob/master/README.md>`__.
 
-   `"Sealed Secrets" for Kubernetes <https://github.com/bitnami-labs/sealed-secrets#readme>`__.
+   `"Sealed Secrets" for Kubernetes <https://github.com/bitnami-labs/sealed-secrets>`__.
 
 4.7 What about GitOps?
 ----------------------