Split chapters and finish chapter03

chapter02.tex

@@ -0,0 +1,76 @@
+\chapter{Configuring HAProxy}
+\section{Configuration file format}
+HAProxy's configuration process involves 3 major sources of parameters:
+
+\begin{enumerate}
+  \item the arguments from the command-line, which always take precedence
+  \item the "global" section, which sets process-wide parameters
+  \item the proxies sections which can take form of "defaults", "listen",
+    "frontend" and "backend".
+\end{enumerate}
+
+The configuration file syntax consists in lines beginning with a keyword
+referenced in this manual, optionally followed by one or several parameters
+delimited by spaces. If spaces have to be entered in strings, then they must be
+preceded by a backslash ('\textbackslash') to be escaped. Backslashes also have to be
+escaped by doubling them.
+
+\section{Time format}
+Some parameters involve values representing time, such as timeouts. These
+values are generally expressed in milliseconds (unless explicitly stated
+otherwise) but may be expressed in any other unit by suffixing the unit to the
+numeric value. It is important to consider this because it will not be repeated
+for every keyword. Supported units are:
+
+\begin{description}
+  \item[us:] microseconds. 1 microsecond = 1/1000000 second
+  \item[ms:] milliseconds. 1 millisecond = 1/1000 second. This is the default.
+  \item[s:]  seconds. 1s = 1000ms
+  \item[m:]  minutes. 1m = 60s = 60000ms
+  \item[h:]  hours.   1h = 60m = 3600s = 3600000ms
+  \item[d:]  days.    1d = 24h = 1440m = 86400s = 86400000ms
+\end{description}
+
+\section{Examples}
+\begin{verbatim}
+    # Simple configuration for an HTTP proxy listening on port 80 on all
+    # interfaces and forwarding requests to a single backend "servers" with a
+    # single server "server1" listening on 127.0.0.1:8000
+    global
+        daemon
+        maxconn 256
+
+    defaults
+        mode http
+        timeout connect 5000ms
+        timeout client 50000ms
+        timeout server 50000ms
+
+    frontend http-in
+        bind *:80
+        default_backend servers
+
+    backend servers
+        server server1 127.0.0.1:8000 maxconn 32
+
+
+    # The same configuration defined with a single listen block. Shorter but
+    # less expressive, especially in HTTP mode.
+    global
+        daemon
+        maxconn 256
+
+    defaults
+        mode http
+        timeout connect 5000ms
+        timeout client 50000ms
+        timeout server 50000ms
+
+    listen http-in
+        bind *:80
+        server server1 127.0.0.1:8000 maxconn 32
+\end{verbatim}
+
+Assuming haproxy is in \$PATH, test these configurations in a shell with:
+
+\verb|$ sudo haproxy -f configuration.conf -c|