Is there a way to add clusters together with edges?

[jonnyhoff]

Example:

    with Cluster("Cluster 1") as cluster1:
        c1node1 = VM("c1node1")

    with Cluster("Cluster 2") as cluster2:
        c2node1 = VM("c2node1")

    cluster1 - Edge(color="red") - cluster2

[clayms]

Not that way.

To get this effect you will have to put an Edge from a Node in one Cluster to a Node in the second Cluster and use the ltail (logical tail of Edge) and lhead (logical head of Edge) options of the Edge .

See the issue comments:

1. Is there a way to have arrows to and from Clusters #17 (comment)
2. Is there a way to have arrows to and from Clusters #17 (comment)

Also see example below.
Note:

1. the graph_attr must include "compound":"true" and "splines":"spline" for this to work.
2. you must prefix the reference to each Cluster name with "cluster_" in the ltail and lhead Edge attributes.

from diagrams import Diagram, Cluster, Edge
from diagrams.oci.compute import VM

graph_attr = {
    "layout":"dot",
    "compound":"true",
    "splines":"spline",
    }

with Diagram("cluster to cluster edge", graph_attr=graph_attr, show=False) as diag:

    with Cluster("Cluster 1"):
        c1node1 = VM("c1node1")

    with Cluster("Cluster 2"):
        c2node1 = VM("c2node1")

    c1node1 - Edge(color="red", ltail="cluster_Cluster 1", lhead="cluster_Cluster 2") - c2node1

diag

[chadfurman]

there might be a way, eventually, to make a PR that can allow shifting between clusters. Here we see that it's possible to create edges between clusters natively in graphviz https://graphviz.readthedocs.io/en/stable/examples.html#fdpclust-py

[chadfurman]

looks like there's a long-running discussion here: #17