designed to inform you of network problems before your clients, end-users or
managers do.
-%\TODO{ruda: More about Nagios. How LB is integrated - LB sensors for Nagios}
+There is a Nagios plugin that tests the status of the \LB server. It is discussed in detail in section~\ref{s:nagios}, page \pageref{s:nagios}.
\subsubsection{ETICS}
\hline
{\tt lb-test-permissions.sh} & Implemented & Check ownership and permission settings for config and runtime files \\
\hline
+{\tt lb-test-nagios-probe.sh} & Implemented & Run the nagios probe and check results \\
+\hline
\end{tabularx}
\subsubsection{Event logging examples}
\result\ The status of all files should match the pre-determined mask.
+\subsubsection{Nagios probe}
+\label{permissions}
+\req\ All \LB\ services configured and running, nagios probe\footnote{see also page \pageref{s:nagios}} installed.
+
+\what
+\begin{enumerate}
+\item Check probe for presence
+\item Run the probe
+\item Check if text and exit code are OK or at least consistent
+\end{enumerate}
+
+\how\ \ctblb{lb-test-nagios-probe.sh}
+
+\result\ The probe has returned OK and exit code was 0.
+
+\note\ The probe includes artificial delays. The test takes approx. 10\,s to finish.
+
\section{LB ``In the Wild''---Real-World WMS Test}
\req\ All \LB services running, working grid infrastructure accessible (including permissions).