System OverviewΒΆ
Pebbles is configured as a number of containers, depicted as grey boxes. Most containers are isolated from each other and only talk the artefact/module above or below them in the graph.
![digraph G {
node [color=blue shape=box style=filled fillcolor=white];
color=black;
edge [arrowhead=none];
subgraph cluster_frontend{
bgcolor="gray";
nginx [shape=diamond color=red];
label = "Frontend";
}
subgraph cluster_API {
bgcolor="gray";
gunicorn->flask_backend;
gunicorn [shape=diamond color=red];
flask_backend [label="Flask Backend"];
label = "API";
}
subgraph cluster_redis {
bgcolor="gray";
flask_backend -> redis;
redis [shape=diamond color=red];
label = "Redis";
}
subgraph cluster_worker {
bgcolor="gray";
redis->worker_;
worker_ [label="Celery Worker"];
label = "Worker";
}
subgraph cluster_sql {
bgcolor="gray";
// cylinder shape is in devel but not in mainstream
PostgreSQL [shape=diamond color=red];
label = "DB";
}
subgraph cluster_SSO {
bgcolor="gray";
shibboleth;
label = "SSO\n(optional)";
}
flask_backend->PostgreSQL;
nginx->gunicorn;
edge [weight=0 color=darkgreen arrowhead=none];
nginx->worker_ [label="proxy configuration directives"];
worker_->flask_backend [label="provision logging"];
nginx->redis [label="proxy config updates"];
edge [weight=0 color=darkgreen arrowhead=none, style=dotted];
nginx->shibboleth;
shibboleth->gunicorn;
}](_images/graphviz-d7dc095c375b58423d65d09c05a1a3bf8d60d9f5.png)
Pebbles is configured as a number of containers, depicted as grey boxes. Most containers are isolated from each other and only talk the artefact/module above or below them in the graph.