To process web traffic in a cloud-based environment, Packet
Forwarder receiver instances must be deployed to the central
cloud-based DNCA that
is operating on a virtual machine.
Before you begin
Complete the following
steps to configure the settings for a packet receiver.
Procedure
- Log in to DNCA web
console.
- Change the number of pipelined instances in the Pipeline
tab as desired.
Depending on whether DNCA privacy
rules have been applied, the default number of DNCA pipelined
processes
is set to one. This might be insufficient and can be increased to
handle the processing load. This assumes that the VM instance has
sufficient resources such as enough processor cores to support the
increase.
- Save the changes to the DNCA but
do not restart the DNCA at
this time.
- Edit the DNCA configuration
file
dcx-conf.xml
.
- Locate the
Capture
tag section in the
configuration file and change the content of this section to:
<ListenerSocketEnabled>true</ListenerSocketEnabled>
<TransparentLoadBalancingEnabled>false</TransparentLoadBalancingEnabled>
<SslSessionInfoOnMemcachedServer>false</SslSessionInfoOnMemcachedServer>
Note: If
the DNCA is
configured to decrypt SSL traffic from the packet forwarder, then
set <SslSessionInfoOnMemcachedServer>
to true
.
- Locate the socket receiver settings and edit the settings
for your network environment.
The following example
displays the default socket receiver settings:
<Listener>
<Module>pktr</Module>
<Logfile>/var/log/Discover/listener.log</Logfile>
<BasePort>1888</BasePort>
<Instances>1</Instances>
<Options>
<Option>
<Value>-p</Value>
</Option></Options>
</Listener>
The BasePort
tag defines
the base port number that is used by the packet forwarders. This must
be the same port number for the DNCA to
correctly capture traffic from the packetforwarder or packet forwarders.
The default setting is to use a base port of 1888
and
only receive from one packet forwarder.
The Instances
tag
defines the maximum number of packet forwarders that the DNCA will
connect to. Set this value according to the total or maximum number
as determined by the number of deployed packet forwarders.
- Save your changes to
dcx-conf.xml
.
- Start the DNCA.
- After the DNCA has
restarted, you can start your web server tier and any deployed packet
forwarder. Run
service pktfwdr start
to start the
packet forwarder daemon.
What to do next
Once the packet forwarder receiver is running, you can
also perform the following actions:
- Check the status of a packet forwader, by running
service
pktfwdr status
.
- Stop a packet forwarder, by running
service pktfwdr stop
.
- View the statistics for a packet forwarder, by running
dcxstats
-p
.