dms/diagrams/omnibus_arch.tex

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% Architekturdiagramm der GitLab-Omnibus-Komponenten
% Einbinden im Hauptdokument:
% \usepackage{tikz}
% \usetikzlibrary{positioning,arrows.meta,fit,backgrounds}
% und an der gewünschten Stelle:
% \input{diagrams/omnibus_arch}
\begin{figure}[H]
\centering
\resizebox{\columnwidth}{!}{%
\begin{tikzpicture}[
node distance=8mm and 9mm,
font=\footnotesize\sffamily,
every node/.style={align=center},
comp/.style={draw, rounded corners=2pt, minimum height=9mm, minimum width=24mm, fill=blue!5},
store/.style={draw, rounded corners=2pt, minimum height=9mm, minimum width=24mm, fill=green!8},
ext/.style={draw, dashed, rounded corners=2pt, minimum height=9mm, minimum width=24mm, fill=gray!5},
arr/.style={-{Stealth[length=2mm]}, thick},
extarr/.style={-{Stealth[length=2mm]}, thick, dashed},
]
% Eingangsebene
\node[comp] (nginx) {nginx\\(Reverse Proxy)};
\node[comp, above=of nginx] (browser) {Browser /\\git-Client};
\node[comp, left=of nginx] (registry) {Container\\Registry};
\node[ext, right=of nginx] (runner) {GitLab Runner\\(extern)};
% Anwendungsebene
\node[comp, below=of nginx] (puma) {Puma\\(Rails-App)};
\node[comp, right=of puma] (sidekiq) {Sidekiq\\(Hintergrundjobs)};
\node[ext, right=of sidekiq] (mail) {SMTP-Server\\(extern)};
% Datenebene
\node[store, below=of puma] (gitaly) {Gitaly\\(Repositorien)};
\node[store, right=of gitaly] (pg) {PostgreSQL\\(Daten)};
\node[store, right=of pg] (redis) {Redis\\(Cache, Queue)};
% Web-Anfragen
\draw[arr] (browser) -- (nginx);
\draw[arr] (nginx) -- (registry);
\draw[arr] (nginx) -- (puma);
\draw[extarr] (runner) -- (nginx);
% Anwendungsebene -> Datenebene
\draw[arr] (puma) -- (gitaly);
\draw[arr] (puma) -- (pg);
\draw[arr] (sidekiq) -- (pg);
\draw[arr] (sidekiq) -- (redis);
\draw[arr] (sidekiq.south west) to[bend right=12] (gitaly.north east);
\draw[arr] (puma.south east) -- (redis.north west);
% Hintergrundjobs -> externer Mailversand
\draw[extarr] (sidekiq) -- (mail);
\end{tikzpicture}%
}
\caption{Komponenten einer Self-Managed-Instanz im Omnibus-Paket. Durchgezogen die im Paket enthaltenen Dienste, gestrichelt die extern angebundenen Komponenten (Runner, Mailversand).}
\label{fig:omnibus-arch}
\end{figure}