Enable nmred/kafka-php and Zookeeper on php and CentOS

  I was working on a project that needs to send messages to Kafka. After some survey, I chose the library nmred/kafka-php. Since the setup might be difficult to people who are new to zookeeper and Kakfa, I would like to leave some record.

  The first step, import nmred/kafka-php with composer.json.

  "require": {
    ...,
    "nmred/kafka-php": "0.1.*"
  },

  And you need to install the zookeeper environment on your machine. By executing the following

yum --nogpgcheck localinstall -y https://archive.cloudera.com/cdh5/one-click-install/redhat/7/x86_64/cloudera-cdh-5-0.x86_64.rpm
yum install -y zookeeper

This allows you to access cdh5 rpm and install zookeeper client on the machine.

But your php still not have the zookeeper.so to make php communicate with zookeeper. So now we need to generate the zookeeper.so. By the following

yum install -y php-devel # this enables phpize
cd /tmp
wget http://apache.stu.edu.tw/zookeeper/zookeeper-3.4.9/zookeeper-3.4.9.tar.gz # the zookeeper source
tar zxvf zookeeper-3.4.9.tar.gz
cd /tmp/zookeeper-3.4.9/src/c # source of c lang
./configure --prefix=/usr/local/zookeeperlib # configure the environment of libzookeeper
make && make install
cd /tmp
wget https://pecl.php.net/get/zookeeper-0.3.1.tgz # download the php-zookeeper source
tar zxvf zookeeper-0.3.1.tgz
cd zookeeper-0.3.1
phpize
./configure --with-php-config=/usr/bin/php-config --with-libzookeeper-dir=/usr/local/zookeeperlib/ # setup the environment
make && make install # install zookeeper.so
echo '; zookeeper' >> /etc/php.ini
echo 'extension=zookeeper.so' >> /etc/php.ini # attach the zookeeper.so information
cd /tmp
rm -rf zookeeper-3.4.9
rm -rf zookeeper-0.3.1

Notice that, choose the php-zookeeper wisely. Make sure the version of library you use matches your php version. For example, I use 0.3.1 because the project is a php70 project.