diff --git a/linkerd.io/content/2-edge/tasks/automatically-rotating-control-plane-tls-credentials.md b/linkerd.io/content/2-edge/tasks/automatically-rotating-control-plane-tls-credentials.md
index ea1f5b83e5..98ab79d00d 100644
--- a/linkerd.io/content/2-edge/tasks/automatically-rotating-control-plane-tls-credentials.md
+++ b/linkerd.io/content/2-edge/tasks/automatically-rotating-control-plane-tls-credentials.md
@@ -294,7 +294,6 @@ metadata:
   # This is the name of the Issuer resource; it's the way
   # Certificate resources can find this issuer.
   name: linkerd-identity-issuer
-  namespace: cert-manager
 spec:
   ca:
     secretName: linkerd-trust-anchor
@@ -598,7 +597,7 @@ inspect_cert () {
         | "Issuer:  '"$iss_selector"'",
           "Subject: '"$sub_selector"'",
           "Valid:   '"$val_selector"'",
-          "" 
+          ""
       '
 }
 ```
diff --git a/linkerd.io/content/2.14/tasks/automatically-rotating-control-plane-tls-credentials.md b/linkerd.io/content/2.14/tasks/automatically-rotating-control-plane-tls-credentials.md
index ea1f5b83e5..98ab79d00d 100644
--- a/linkerd.io/content/2.14/tasks/automatically-rotating-control-plane-tls-credentials.md
+++ b/linkerd.io/content/2.14/tasks/automatically-rotating-control-plane-tls-credentials.md
@@ -294,7 +294,6 @@ metadata:
   # This is the name of the Issuer resource; it's the way
   # Certificate resources can find this issuer.
   name: linkerd-identity-issuer
-  namespace: cert-manager
 spec:
   ca:
     secretName: linkerd-trust-anchor
@@ -598,7 +597,7 @@ inspect_cert () {
         | "Issuer:  '"$iss_selector"'",
           "Subject: '"$sub_selector"'",
           "Valid:   '"$val_selector"'",
-          "" 
+          ""
       '
 }
 ```
diff --git a/linkerd.io/content/2.15/tasks/automatically-rotating-control-plane-tls-credentials.md b/linkerd.io/content/2.15/tasks/automatically-rotating-control-plane-tls-credentials.md
index ea1f5b83e5..98ab79d00d 100644
--- a/linkerd.io/content/2.15/tasks/automatically-rotating-control-plane-tls-credentials.md
+++ b/linkerd.io/content/2.15/tasks/automatically-rotating-control-plane-tls-credentials.md
@@ -294,7 +294,6 @@ metadata:
   # This is the name of the Issuer resource; it's the way
   # Certificate resources can find this issuer.
   name: linkerd-identity-issuer
-  namespace: cert-manager
 spec:
   ca:
     secretName: linkerd-trust-anchor
@@ -598,7 +597,7 @@ inspect_cert () {
         | "Issuer:  '"$iss_selector"'",
           "Subject: '"$sub_selector"'",
           "Valid:   '"$val_selector"'",
-          "" 
+          ""
       '
 }
 ```
diff --git a/linkerd.io/content/2.16/tasks/automatically-rotating-control-plane-tls-credentials.md b/linkerd.io/content/2.16/tasks/automatically-rotating-control-plane-tls-credentials.md
index ea1f5b83e5..98ab79d00d 100644
--- a/linkerd.io/content/2.16/tasks/automatically-rotating-control-plane-tls-credentials.md
+++ b/linkerd.io/content/2.16/tasks/automatically-rotating-control-plane-tls-credentials.md
@@ -294,7 +294,6 @@ metadata:
   # This is the name of the Issuer resource; it's the way
   # Certificate resources can find this issuer.
   name: linkerd-identity-issuer
-  namespace: cert-manager
 spec:
   ca:
     secretName: linkerd-trust-anchor
@@ -598,7 +597,7 @@ inspect_cert () {
         | "Issuer:  '"$iss_selector"'",
           "Subject: '"$sub_selector"'",
           "Valid:   '"$val_selector"'",
-          "" 
+          ""
       '
 }
 ```
diff --git a/linkerd.io/content/2.17/tasks/automatically-rotating-control-plane-tls-credentials.md b/linkerd.io/content/2.17/tasks/automatically-rotating-control-plane-tls-credentials.md
index ea1f5b83e5..98ab79d00d 100644
--- a/linkerd.io/content/2.17/tasks/automatically-rotating-control-plane-tls-credentials.md
+++ b/linkerd.io/content/2.17/tasks/automatically-rotating-control-plane-tls-credentials.md
@@ -294,7 +294,6 @@ metadata:
   # This is the name of the Issuer resource; it's the way
   # Certificate resources can find this issuer.
   name: linkerd-identity-issuer
-  namespace: cert-manager
 spec:
   ca:
     secretName: linkerd-trust-anchor
@@ -598,7 +597,7 @@ inspect_cert () {
         | "Issuer:  '"$iss_selector"'",
           "Subject: '"$sub_selector"'",
           "Valid:   '"$val_selector"'",
-          "" 
+          ""
       '
 }
 ```
diff --git a/linkerd.io/content/2.18/tasks/automatically-rotating-control-plane-tls-credentials.md b/linkerd.io/content/2.18/tasks/automatically-rotating-control-plane-tls-credentials.md
index ea1f5b83e5..98ab79d00d 100644
--- a/linkerd.io/content/2.18/tasks/automatically-rotating-control-plane-tls-credentials.md
+++ b/linkerd.io/content/2.18/tasks/automatically-rotating-control-plane-tls-credentials.md
@@ -294,7 +294,6 @@ metadata:
   # This is the name of the Issuer resource; it's the way
   # Certificate resources can find this issuer.
   name: linkerd-identity-issuer
-  namespace: cert-manager
 spec:
   ca:
     secretName: linkerd-trust-anchor
@@ -598,7 +597,7 @@ inspect_cert () {
         | "Issuer:  '"$iss_selector"'",
           "Subject: '"$sub_selector"'",
           "Valid:   '"$val_selector"'",
-          "" 
+          ""
       '
 }
 ```
diff --git a/linkerd.io/content/2.19/tasks/automatically-rotating-control-plane-tls-credentials.md b/linkerd.io/content/2.19/tasks/automatically-rotating-control-plane-tls-credentials.md
index ea1f5b83e5..98ab79d00d 100644
--- a/linkerd.io/content/2.19/tasks/automatically-rotating-control-plane-tls-credentials.md
+++ b/linkerd.io/content/2.19/tasks/automatically-rotating-control-plane-tls-credentials.md
@@ -294,7 +294,6 @@ metadata:
   # This is the name of the Issuer resource; it's the way
   # Certificate resources can find this issuer.
   name: linkerd-identity-issuer
-  namespace: cert-manager
 spec:
   ca:
     secretName: linkerd-trust-anchor
@@ -598,7 +597,7 @@ inspect_cert () {
         | "Issuer:  '"$iss_selector"'",
           "Subject: '"$sub_selector"'",
           "Valid:   '"$val_selector"'",
-          "" 
+          ""
       '
 }
 ```
diff --git a/linkerd.io/content/blog/2024/0206-linkerd-certificates-with-vault/index.md b/linkerd.io/content/blog/2024/0206-linkerd-certificates-with-vault/index.md
index 2d70757fa6..022c8bc81b 100644
--- a/linkerd.io/content/blog/2024/0206-linkerd-certificates-with-vault/index.md
+++ b/linkerd.io/content/blog/2024/0206-linkerd-certificates-with-vault/index.md
@@ -452,7 +452,6 @@ apiVersion: cert-manager.io/v1
 kind: ClusterIssuer
 metadata:
   name: vault-issuer
-  namespace: cert-manager
 spec:
   vault:
     path: pki/root/sign-intermediate