Однозначно
Graphviz!
В AsciiDoc, например, есть плагин. Тогда прямо в тексте достаточно написать:
digraph {
graph [rankdir=TD,ranksep=0.5,fontname=Arial]
node [shape=box,fontname=Arial,fontsize=12,style="rounded"]
edge [fontsize=8, fontname=Arial]
user [shape=diamond, label="User", fillcolor=yellow, style="rounded,filled"]
nginx [label="Nginx Web Server \n (http://ctxm.ornet.org)", style="bold,rounded"]
jenkins [label="Jenkins"]
nexus [label="Nexus"]
sonar [label="Sonar"]
postgres [label="PostgreSQL"]
openldap [label="OpenLDAP"]
volumes [label="volumes\n (data persisted here!)", constraint=false,color=gray, fillcolor=gray, style="rounded,filled"]
user -> nginx[label="access", style=tapered, penwidth=3 ]
nginx -> nexus[label="\/nexus"]
nginx -> sonar[label="\/sonar"]
nginx -> jenkins[label="\/jenkins"]
nginx -> volumes [label="volumes-from",color=gray]
openldap -> volumes [label="volumes-from",color=gray]
postgres -> volumes [label="volumes-from",color=gray]
jenkins -> openldap
jenkins -> nexus
jenkins -> volumes [label="volumes-from",color=gray]
nexus -> openldap
nexus -> volumes [label="volumes-from",color=gray]
sonar -> postgres
sonar -> openldap
sonar -> volumes [label="volumes-from",color=gray]
}
А на выходе это даст картинку:
Простой
