02383adf64
This adds a new IP manager driver for configuring addresses and routes via keepalived instead of directly. It used when the logical resource is configured to be highly-available, according to configuration pushed by the orchestrator. We rely on a 'ha_resource' flag attached to the main config dict to enable it, and use specific HA config about peers and cluster priority contained in the 'ha_config' section of the main config. The resulting keepalived cluster contains a VRRP instance for each interface, with the exception of the management interface. Partially-implements: blueprint appliance-ha Change-Id: I5ababa41d65642b00f6b808197af9b2a59ebc67a
59 lines
1.9 KiB
Python
59 lines
1.9 KiB
Python
# Copyright (c) 2015 Akanda, Inc. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import os
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from astara_router.drivers import base
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from astara_router.utils import execute, load_template
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class NginxLB(base.Manager):
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NAME = 'nginx'
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CONFIG_PATH = '/etc/nginx/sites-enabled/'
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CONFIG_FILE_TEMPLATE = os.path.join(
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os.path.dirname(__file__), 'nginx.conf.template')
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INIT = 'nginx'
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def __init__(self, root_helper='sudo astara-rootwrap /etc/rootwrap.conf'):
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"""
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Initializes NginxLB class.
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:type root_helper: str
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:param root_helper: System utility used to gain escalate privileges.
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"""
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super(NginxLB, self).__init__(root_helper)
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self.config_tmpl = load_template(self.CONFIG_FILE_TEMPLATE)
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def _render_config_template(self, path, config):
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with open(path, 'w') as out:
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out.write(
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self.config_tmpl.render(loadbalancer=config)
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)
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def restart(self):
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execute(['service', self.INIT, 'restart'], self.root_helper)
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def update_config(self, config):
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path = os.path.join(
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self.CONFIG_PATH, 'ak-loadbalancer-%s.conf' % config.id)
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self._render_config_template(path=path, config=config)
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self.restart()
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class NginxPlusLB(NginxLB):
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NAME = 'nginxplus'
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CONFIG_FILE = '/tmp/nginx_plus.conf'
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INIT = 'nginxplus'
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