More verbose source installation instructions

Author: edenhill

INSTALL.md

@@ -0,0 +1,121 @@
+# confluent-kafka-python installation instructions
+
+## Install pre-built wheels (recommended)
+
+Confluent provides pre-built Python wheels of confluent-kafka-python with
+all dependencies included.
+
+To install, simply do:
+
+```bash
+python3 -m pip install confluent-kafka
+```
+
+If you get a build error or require Kerberos/GSSAPI support please read the next section: *Install from source*
+
+
+## Install from source
+
+It is sometimes necessary to install confluent-kafka from source, rather
+than from prebuilt binary wheels, such as when:
+ - You need GSSAPI/Kerberos authentication.
+ - You're on a Python version we do not provide prebuilt wheels for.
+ - You're on an architecture or platform we do not provide prebuilt wheels for.
+ - You want to build confluent-kafka-python from the master branch.
+
+
+### Install from source on RedHat, CentOS, Fedora, etc
+
+```bash
+#
+# Perform these steps as the root user (e.g., in a 'sudo bash' shell)
+#
+
+# Install build tools and Kerberos support.
+
+yum install -y python3 python3-pip python3-devel gcc make cyrus-sasl-gssapi krb5-workstation
+
+# Install the latest version of librdkafka:
+
+rpm --import https://packages.confluent.io/rpm/7.0/archive.key
+
+echo '
+[Confluent-Clients]
+name=Confluent Clients repository
+baseurl=https://packages.confluent.io/clients/rpm/centos/$releasever/$basearch
+gpgcheck=1
+gpgkey=https://packages.confluent.io/clients/rpm/archive.key
+enabled=1' > /etc/yum.repos.d/confluent.repo
+
+yum install -y librdkafka-devel
+
+
+#
+# Now build and install confluent-kafka-python as your standard user
+# (e.g., exit the root shell first).
+#
+
+python3 -m pip install --no-binary confluent-kafka confluent-kafka
+
+
+# Verify that confluent_kafka is installed:
+
+python3 -c 'import confluent_kafka; print(confluent_kafka.version())'
+```
+
+### Install from source on Debian or Ubuntu
+
+```bash
+#
+# Perform these steps as the root user (e.g., in a 'sudo bash' shell)
+#
+
+# Install build tools and Kerberos support.
+
+apt install -y wget software-properties-common lsb-release gcc make python3 python3-pip python3-dev libsasl2-modules-gssapi-mit krb5-user
+
+
+# Install the latest version of librdkafka:
+
+wget -qO - https://packages.confluent.io/deb/7.0/archive.key | apt-key add -
+
+add-apt-repository "deb https://packages.confluent.io/clients/deb $(lsb_release -cs) main"
+
+apt update
+
+apt install -y librdkafka-dev
+
+
+#
+# Now build and install confluent-kafka-python as your standard user
+# (e.g., exit the root shell first).
+#
+
+python3 -m pip install --no-binary confluent-kafka confluent-kafka
+
+
+# Verify that confluent_kafka is installed:
+
+python3 -c 'import confluent_kafka; print(confluent_kafka.version())'
+```
+
+
+### Install from source on Mac OS X
+
+```bash
+
+# Install librdkafka from homebrew
+
+brew install librdkafka
+
+
+# Build and install confluent-kafka-python
+
+python3 -m pip install --no-binary confluent-kafka confluent-kafka
+
+
+# Verify that confluent_kafka is installed:
+
+python3 -c 'import confluent_kafka; print(confluent_kafka.version())'
+
+```

README.md

@@ -222,20 +222,16 @@ Install
 **NOTE:** The pre-built Linux wheels do NOT contain SASL Kerberos/GSSAPI support.
           If you need SASL Kerberos/GSSAPI support you must install librdkafka and
           its dependencies using the repositories below and then build
-          confluent-kafka  using the command in the "Install from
-          source from PyPi" section below.
+          confluent-kafka using the instructions in the
+          "Install from source" section below.
 
 **Install AvroProducer and AvroConsumer**
 
     $ pip install "confluent-kafka[avro]"
 
-**Install from source from PyPi**
-*(requires librdkafka + dependencies to be installed separately)*:
+**Install from source**
 
-    $ pip install --no-binary :all: confluent-kafka
-
-
-For source install, see *Prerequisites* below.
+For source install, see the *Install from source* section in [INSTALL.md](INSTALL.md).
 
 
 Broker Compatibility
@@ -274,30 +270,13 @@ Linux distribution's `ca-certificates` package which needs to be installed
 through `apt`, `yum`, et.al.
 
 If your system stores CA certificates in another location you will need to
-configure the client with `'ssl.ca.location': '/path/to/cacert.pem'`. 
+configure the client with `'ssl.ca.location': '/path/to/cacert.pem'`.
 
 Alternatively, the CA certificates can be provided by the [certifi](https://pypi.org/project/certifi/)
 Python package. To use certifi, add an `import certifi` line and configure the
 client's CA location with `'ssl.ca.location': certifi.where()`.
 
 
-Prerequisites
-=============
-
- * Python >= 2.7 or Python 3.x
- * [librdkafka](https://github.com/edenhill/librdkafka) >= 1.6.0 (latest release is embedded in wheels)
-
-librdkafka is embedded in the macosx manylinux wheels, for other platforms, SASL Kerberos/GSSAPI support or
-when a specific version of librdkafka is desired, following these guidelines:
-
-  * For **Debian/Ubuntu** based systems, add this APT repo and then do `sudo apt-get install librdkafka-dev python-dev`:
-http://docs.confluent.io/current/installation.html#installation-apt
-
- * For **RedHat** and **RPM**-based distros, add this YUM repo and then do `sudo yum install librdkafka-devel python-devel`:
-http://docs.confluent.io/current/installation.html#rpm-packages-via-yum
-
- * On **OSX**, use **homebrew** and do `brew install librdkafka`
-
 
 License
 =======