Commit facc5d5f authored by Sebastien Robin's avatar Sebastien Robin Committed by Cédric de Saint Martin

optimize haproxy server configuration and explain values

parent 5942f2d3
...@@ -546,8 +546,18 @@ class Recipe(BaseSlapRecipe): ...@@ -546,8 +546,18 @@ class Recipe(BaseSlapRecipe):
} }
def installHaproxy(self, ip, port, name, server_check_path, url_list): def installHaproxy(self, ip, port, name, server_check_path, url_list):
server_template = """ server %(name)s %(address)s cookie %(name)s check inter 20s rise 2 fall 4""" # inter must be quite short in order to detect quickly an unresponsive node
# and to detect quickly a node which is back
# rise must be minimal possible : 1, indeed, a node which is back don't need
# to sleep more time and we can give him work immediately
# fall should be quite sort. with inter at 3, and fall at 2, a node will be
# considered as dead after 6 seconds.
# maxconn should be set as the maximum thread we have per zope, like this
# haproxy will manage the queue of request with the possibility to
# move a request to another node if the initially selected one is dead
server_template = """ server %(name)s %(address)s cookie %(name)s check inter 3s rise 1 fall 2 maxconn %(cluster_zope_thread_amount)s""" %
config = dict(name=name, ip=ip, port=port, config = dict(name=name, ip=ip, port=port,
cluster_zope_thread_amount=self.options.get('cluster_zope_thread_amount', 1),
server_check_path=server_check_path,) server_check_path=server_check_path,)
i = 1 i = 1
server_list = [] server_list = []
......
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