Setting up haproxy and varnish with reference to the configuration from these sites: http://sharadchhetri.com/2014/12/20/how-to-install-varnish-4-version-on-centos-7-rhel-7/ https://www.upcloud.com/support/haproxy-load-balancer-centos/ And finally can access plone on the server. But when I check the haproxy status, only client1 can be accessed. All other clients were down with general socket error, permission denied. Googling a bit I finally found out it was due to SELinux. Refer to this page: http://stackoverflow.com/questions/26420729/haproxy-health-check-permission-denied With the solution from that page, I installed policycoreutils-python and tried to run the command given: semanage port --add --type http_port_t --proto tcp 8081 But that command failed with the error that the port was already defined. When I looked it up using: semanage port -l | grep 8081 It belonged to some other type (transproxy_port_t). When I tried to delete the type using: semanage port -d -t transprox
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