diff --git a/src/markdown-pages/install-with-kurl/system-requirements.md b/src/markdown-pages/install-with-kurl/system-requirements.md index 9b09c4a4..cf2a8d67 100644 --- a/src/markdown-pages/install-with-kurl/system-requirements.md +++ b/src/markdown-pages/install-with-kurl/system-requirements.md @@ -73,7 +73,7 @@ This configuration should be established **prior to the installation**. It's imp ### Hostnames, DNS, and IP Address -#### 1. All hosts in the cluster must have valid DNS records and hostnames. +#### All hosts in the cluster must have valid DNS records and hostnames The fully-qualified domain name (FQDN) of any host used with kURL **must** be a valid DNS subdomain name, and its name records **must** be resolvable by DNS. @@ -86,7 +86,7 @@ A valid DNS name must: For more information, see [DNS Subdomain Names](https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#dns-subdomain-names) in the Kubernetes documentation. -#### 2. All hosts in the cluster must have static IP address assignments. +#### All hosts in the cluster must have static IP address assignments After a host is added to a Kubernetes cluster, Kubernetes assumes that the hostname and IP address of the host **will not change.** If you need to change the hostname or IP address of a node, you must first remove the node from the cluster. @@ -95,7 +95,7 @@ To change the hostname or IP address of a node in clusters that do not have thre For more information about the requirements for naming nodes, see [Node naming uniqueness](https://kubernetes.io/docs/concepts/architecture/nodes/#node-name-uniqueness) in the Kubernetes documentation. -#### 3. All hosts in the cluster must not occupy Kubernetes Pod or Service CIDR ranges +#### All hosts in the cluster must not occupy Kubernetes Pod or Service CIDR ranges Kubernetes also requires exclusive use of two IP subnets (also known as CIDR ranges) for Pod-to-Pod traffic within the cluster. These subnets *must not* overlap with the subnets used in your local network or else routing errors will result.