clusterIpv4CidrBlock

The IP address range used to allocate IP addresses to pods in the cluster. For Cloud Composer environments in versions composer-1..-airflow-..*, this field is applicable only when use_ip_aliases is true. Set to blank to have GKE choose a range with the default size. Set to /netmask (e.g. /14) to have GKE choose a range with a specific netmask. Set to a CIDR notation (e.g. 10.96.0.0/14) from the RFC-1918 private networks (e.g. 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) to pick a specific range to use. Specify either cluster_secondary_range_name or cluster_ipv4_cidr_block but not both.