This section describes additional tasks (beyond the requirements that you must perform before you can install Apigee mTLS. These tasks include:
- Ensuring that you have not disabled
- Replacing your default firewall service (in many cases,
iptableson all nodes in your cluster.
- Backing up your Cassandra, ZooKeeper, and Postgres data
Each of these tasks is described in the sections that follow.
Back up your Cassandra, Zookeeper, and Postgres data
During the installation and configuration of Apigee mTLS, you will reinstall Cassandra and Postgres on their respective nodes. As a result, you should back up the data for the following components:
While you do not reinstall ZooKeeper in your cluster, Apigee recommends that you back up its data prior to installing Apigee mTLS.
For instructions on how to back up the data for these components, see How to back up.
Ensure that the loopback address is enabled
Apigee mTLS requires that the
localhost loopback address is enabled. The IP address
127.0.0.1 must be routable and it must resolve to
localhost on every node
in the cluster. The Consul proxy servers in the service mesh depend on this.
If you have previously disabled the
localhost loopback address, you must re-enable
it on all nodes in your cluster.
Replace the default firewall
The default firewall on CentOS and RedHat Enterprise Linux (RHEL) is
However, Apigee mTLS requires that you use
iptables as your firewall instead. As a
result, you must:
- Disable and remove
firewalld, if installed.
iptableson each node and ensure that it's running.
This section describes how to perform these tasks.
The order of the nodes on which you do this does not matter.
firewalld and ensure
iptables is installed and
- Log in to the node as the root user.
- Stop all components by executing the following command:
- Disable and uninstall
- Stop the
firewalldservice by executing the following command:
systemctl stop firewalld
- Disable the
firewalldservice and mask it by executing the following commands:
systemctl disable firewalld
systemctl mask --now firewalld
- Remove the
yumby executing the following command:
yum remove firewalld
- Reset all services that have a failed status by executing the following command:
- Reload all services by executing the following command:
- Stop the
- Install the
iptables-servicespackages by executing the following command:
yum install iptables iptables-services
- Reload running services by executing the following command:
iptablesby executing the following command:
systemctl enable iptables ip6tables
- Start the
ip6tablesservices by executing the following command:
systemctl start iptables ip6tables
- Install the
- Repeat this process for each node in the cluster.