Difference between revisions of "VPP/HostStack/nginx"

Revision as of 21:02, 13 February 2020

Example of how to run nginx via ldp and vcl on top of vpp's host stack.

VPP configuration

In addition to the typical startup config parameters, the host stack requires the ones lower for enabling the use of memfds segments for vpp message queues and to configure the binary api socket transport. For a list of startup parameters see here.

session { evt_qs_memfd_seg  }
socksvr { socket-name /tmp/vpp-api.sock}

Nginx

First start vpp and ensure that the network to the http client is working as expected. Then defined the following environment variables with the appropriate paths:

VCL_CFG=/path/to/vcl.conf
LDP_PATH=/path/to/vpp/build-root/build-vpp-native/vpp/lib/libvcl_ldpreload.so

And create a minimal startup configuration in /etc/vpp/vcl.conf like the one lower:

vcl {
  heapsize 64M
  rx-fifo-size 4000000
  tx-fifo-size 4000000
  api-socket-name /tmp/vpp-api.sock
}

The above configures vcl to request 4MB receive and transmit fifo sizes and access to both local and global session scopes. Additionally, it provides the path to vpp's binary api socket.

To start nginx:

sudo LD_PRELOAD=$LDP_PATH VCL_CONFIG=$VCL_CFG nginx -c nginx.conf