高可用性指南¶
Designate 支持以“主动-主动”HA模式运行其所有组件服务。
某些服务需要额外的设置才能确保它们能够在主动-主动模式下工作，这些服务如下所示。
designate-api¶
需要访问：¶
AMQP
![digraph APIHA {
rankdir=LR
{"L7 Load Balancers" [shape=box]
"API Server 1" [shape=box]
"API Server 2" [shape=box]
"API Server 3" [shape=box]
"AMQP Servers" [shape=box]
}
subgraph "API Servers" {
cluster=true;
label="API Servers";
"API Server 1";
"API Server 2";
"API Server 3";
}
"L7 Load Balancers" -> {"API Server 1" "API Server 2" "API Server 3"} -> "AMQP Servers";
}](../_images/graphviz-2a127d38c9d42f677cb51c21555545958cea56b8.png)
说明¶
要运行多个 designate-api 服务，您应该在负载均衡器后运行这些服务。
在负载均衡器后，您可能需要设置以下内容
[service:api]
api_base_uri = http://<load balancer URI>/
enable_host_header = True
或者以下内容
[oslo_middleware]
enable_proxy_headers_parsing = true
然后配置负载均衡器以设置适当的标头（例如，在 apache 中启用 mod_proxy）。
designate-central¶
需要访问：¶
AMQP
数据库
![digraph CENTRALHA {
rankdir=LR
{"AMQP Servers" [shape=box]
"designate-central Server 1" [shape=box]
"designate-central Server 2" [shape=box]
"designate-central Server 3" [shape=box]
"Database Servers" [shape=cylinder]
}
subgraph "designate-central Servers" {
cluster=true;
label="designate-central Servers";
"designate-central Server 1";
"designate-central Server 2";
"designate-central Server 3";
}
"AMQP Servers" -> "designate-central Server 1" [dir=both];
"AMQP Servers" -> "designate-central Server 2" [dir=both];
"AMQP Servers" -> "designate-central Server 3" [dir=both];
"designate-central Server 1" -> "Database Servers";
"designate-central Server 2" -> "Database Servers";
"designate-central Server 3" -> "Database Servers";
}](../_images/graphviz-43e2baedf03ebc636c48312f5eae1cdc78edef49.png)
说明¶
只要它们都能访问 AMQP 服务器，您可以运行任意数量的 designate-central 服务，工作将在所有服务之间分配。
designate-mdns¶
需要访问：¶
AMQP
数据库
DNS 服务器
![digraph MDNSHA {
rankdir=LR
{"AMQP Servers" [shape=box]
"designate-mdns Server 1" [shape=box]
"designate-mdns Server 2" [shape=box]
"designate-mdns Server 3" [shape=box]
"DNS Servers" [shape=egg]
"Database Servers" [shape=cylinder]
}
subgraph "designate-mdns Servers" {
cluster=true;
label="designate-mdns Servers";
"designate-mdns Server 1";
"designate-mdns Server 2";
"designate-mdns Server 3";
}
"AMQP Servers" -> "designate-mdns Server 1" [dir=both];
"AMQP Servers" -> "designate-mdns Server 2" [dir=both];
"AMQP Servers" -> "designate-mdns Server 3" [dir=both];
"designate-mdns Server 1" -> "Database Servers" [dir=back];
"designate-mdns Server 2" -> "Database Servers" [dir=back];
"designate-mdns Server 3" -> "Database Servers" [dir=back];
"designate-mdns Server 1" -> "DNS Servers"
"designate-mdns Server 2" -> "DNS Servers"
"designate-mdns Server 3" -> "DNS Servers"
}](../_images/graphviz-413cd8dde1602014a8599a54a1e8d0cbbfe3c359.png)
说明¶
只要它们都能访问 AMQP 服务器，您可以运行任意数量的 designate-mdns 服务，工作将在所有服务之间分配。
designate-worker¶
需要访问：¶
AMQP
DNS 服务器
![digraph WORKERSHA {
rankdir=LR
{"AMQP Servers" [shape=box]
"designate-worker Server 1" [shape=box]
"designate-worker Server 2" [shape=box]
"designate-worker Server 3" [shape=box]
"DNS Servers" [shape=egg]
}
subgraph "designate-worker Servers" {
cluster=true;
label="designate-worker Servers";
"designate-worker Server 1";
"designate-worker Server 2";
"designate-worker Server 3";
}
"AMQP Servers" -> "designate-worker Server 1" [dir=both];
"AMQP Servers" -> "designate-worker Server 2" [dir=both];
"AMQP Servers" -> "designate-worker Server 3" [dir=both];
"designate-worker Server 1" -> "DNS Servers"
"designate-worker Server 2" -> "DNS Servers"
"designate-worker Server 3" -> "DNS Servers"
}](../_images/graphviz-7ac27ce83c92f32060e4900ca02ebf0981a276f7.png)
说明¶
只要它们都能访问 AMQP 服务器，您可以运行任意数量的 designate-worker 服务，工作将在所有服务之间分配。
designate-producer¶
需要访问：¶
AMQP
DLM
![digraph PRODUCERSHA {
rankdir=LR
{"AMQP Servers" [shape=box]
"designate-producer Server 1" [shape=box]
"designate-producer Server 2" [shape=box]
"designate-producer Server 3" [shape=box]
"DLM Servers" [shape=octagon]
}
subgraph "designate-producer Servers" {
cluster=true;
label="designate-producer Servers";
"designate-producer Server 1";
"designate-producer Server 2";
"designate-producer Server 3";
}
"AMQP Servers" -> "designate-producer Server 1" [dir=both];
"AMQP Servers" -> "designate-producer Server 2" [dir=both];
"AMQP Servers" -> "designate-producer Server 3" [dir=both];
"designate-producer Server 1" -> "DLM Servers"
"designate-producer Server 2" -> "DLM Servers"
"designate-producer Server 3" -> "DLM Servers"
}](../_images/graphviz-cbce0a2b9463981f6b10337d36a00d2686fa4b1b.png)
说明¶
只要它们都能访问 AMQP 服务器和分布式锁管理器，您可以运行任意数量的 designate-producer 服务，工作将在所有服务之间分片。
您需要设置一个协调 backend_url。这需要是一个受 tooz 支持的 DLM，并且支持组管理。请参阅 tooz 驱动程序列表 以获取可用的驱动程序
警告
未能设置 backend_url 可能会导致意外后果，并可能导致某些周期性任务被运行多次。
[coordination]
backend_url = kazoo://<zookeeper url>:<zookeeper port>
designate-sink¶
需要访问：¶
AMQP
![digraph SINKSHA {
rankdir=LR
{"AMQP Servers" [shape=box]
"designate-sink Server 1" [shape=box]
"designate-sink Server 2" [shape=box]
"designate-sink Server 3" [shape=box]
}
subgraph "designate-sink Servers" {
cluster=true;
label="designate-sink Servers";
"designate-sink Server 1";
"designate-sink Server 2";
"designate-sink Server 3";
}
"AMQP Servers" -> "designate-sink Server 1" [dir=both];
"AMQP Servers" -> "designate-sink Server 2" [dir=both];
"AMQP Servers" -> "designate-sink Server 3" [dir=both];
}](../_images/graphviz-209e4d5f3b6ad39e578c231b9638bed930b7d7d4.png)
说明¶
只要它们都能访问 AMQP 服务器，您可以运行任意数量的 designate-sink 服务，工作将在所有服务之间分配。
