openstack/openstack-ansible
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Merge "Add docs for HAProxy ping checks"

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Jenkins 2016-04-22 15:54:31 +00:00 committed by Gerrit Code Review
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doc/source/install-guide/configure-haproxy.rst
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@ -97,6 +97,26 @@ follows:
haproxy_keepalived_vars_file: /path/to/myvariablefile.yml
Configuring keepalived ping checks
##################################
OpenStack-Ansible configures keepalived with a check script that pings an
external resource and uses that ping to determine if a node has lost network
connectivity. If the pings fail, keepalived will fail over to another node and
HAProxy will serve requests there.
The destination address, ping count and ping interval are configurable via
Ansible variables in ``/etc/openstack_deploy/user_variables.yml``:
.. code-block:: yaml
keepalived_ping_address: # IP address to ping
keepalived_ping_count: # ICMP packets to send (per interval)
keepalived_ping_interval: # How often ICMP packets are sent
By default, OpenStack-Ansible will configure keepalived to ping one of the root
DNS servers operated by RIPE. You can change this IP address to a different
external address or another address on your internal network.
Securing HAProxy communication with SSL certificates
####################################################