Big-IQ AS3 - Invalid Node, the IP address X.X.X.X already exists

Sounds like you should be able to use the following in your pool member section:

"shareNodes": true

This will create the Nodes in the Common partition, but be aware that those nodes in that Common partition will show up in all of the other tenants even if they are not using it.

so for example my node declarations look like this.

...

                "app1_pool": {

                    "class": "Pool",

                    "monitors": [

                        "http"

                    ],

                    "loadBalancingMode": "least-connections-member",

                    "members": [

                        {

                            "adminState": "enable",

                            "shareNodes": true,

                            "servicePort": 80,

                            "serverAddresses": [

                                "2.2.2.2"

                            ],

                            "hostname": "vmmsjontestp01"

                        },

                        {

                            "adminState": "enable",

                            "shareNodes": true,

                            "servicePort": 80,

                            "serverAddresses": [

                                "3.3.3.3"

                            ],

                            "hostname": "vmmsjontestp02"

                        }

                        {

                            "adminState": "enable",

                            "shareNodes": true,

                            "servicePort": 80,

                            "serverAddresses": [

                                "4.4.4.4"

                            ],

                            "hostname": "vmmsjontestp03"

                        }