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% Fix for: https://tex.stackexchange.com/a/315027/43228
\RequirePackage{luatex85}
\documentclass[border=10pt,17pt]{standalone}
\usepackage{cfr-lm}
\usepackage{pgf}
\usepackage{tikz}
\usetikzlibrary{arrows,shapes,snakes}
\usetikzlibrary{shapes.multipart}
\begin{document}
%% sans-serif fonts, large by default, and bold too
\sffamily
\sbweight
\bfseries
\large
\begin{tikzpicture}[>=stealth',auto,rounded corners]
\input{common.tex}
%% \draw [help lines] (-10,0) grid (10,20);
\node (flegend) at (8,18) {\textt{number\_sync\_standby = 1}} ;
\node (a) at (0,18) [primary]
{\textbf{\normalsize Node A}
\nodepart{second}
\textbf{\Large Primary}
\nodepart[text=stxt]{third}
\texttt{replication quorum = true} \\
\texttt{candidate priority = 50}
};
\node (b) at (0,12) [standby]
{\textbf{\normalsize Node B}
\nodepart{second}
\textbf{\Large Secondary}
\nodepart{third}
\texttt{replication quorum = true} \\
\texttt{candidate priority = 50}
};
\node (c) at (0,6) [standby]
{\textbf{\normalsize Node C}
\nodepart{second}
\textbf{\Large Secondary}
\nodepart{third}
\texttt{replication quorum = true} \\
\texttt{candidate priority = 50}
};
\node (app) at (-8,12) [app] {\textbf{\Large Application}};
\node (m) at (8,12) [monitor] {\textbf{\Large Monitor}};
\path (app) edge [sql,out=90,in=180] node[near start] {SQL} (a.west)
edge [sqlf] (b)
edge [sqlf,out=-90,in=180] node[near start,above] {SQL (fallback)} (c.west)
(a.south east) edge [sr,out=0,in=35] node[left,near start] {Streaming Replication} (b.north east)
(a.south east) edge [sr,out=0,in=35] (c.north east)
(m) edge [hc,out=90,in=0] (a.east)
edge [hc,out=180,in=0] (b.east)
edge [hc,out=-90,in=0] node[below,near end] {Health checks} (c.east);
\end{tikzpicture}
\end{document}
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