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rework loadbalancer support

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This commit is contained in:
Julien Salleyron
2019-06-05 22:18:06 +02:00
committed by Traefiker Bot
parent b143101f82
commit 518a37e776
86 changed files with 339 additions and 1055 deletions
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22
docs/content/routing/services/index.md
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@@ -14,14 +14,11 @@ The `Services` are responsible for configuring how to reach the actual services
```toml
[http.services]
[http.services.my-service.LoadBalancer]
method = "wrr" # Load Balancing based on weights
[[http.services.my-service.LoadBalancer.servers]]
url = "http://private-ip-server-1/"
weight = 30 # 30% of the requests will go to that instance
[[http.services.my-service.LoadBalancer.servers]]
url = "http://private-ip-server-2/"
weight = 70 # 70% of the requests will go to that instance
```
??? example "Declaring a TCP Service with Two Servers -- Using the [File Provider](../../providers/file.md)"
@@ -52,21 +49,17 @@ The load balancers are able to load balance the requests between multiple instan
```toml
[http.services]
[http.services.my-service.LoadBalancer]
method = "wrr" # Load Balancing based on weights
[[http.services.my-service.LoadBalancer.servers]]
url = "http://private-ip-server-1/"
weight = 50 # 50% of the requests will go to that instance
[[http.services.my-service.LoadBalancer.servers]]
url = "http://private-ip-server-2/"
weight = 50 # 50% of the requests will go to that instance
```
#### Servers
Servers declare a single instance of your program.
The `url` option point to a specific instance.
The `weight` option defines the weight of the server for the load balancing algorithm.
!!! note
Paths in the servers' `url` have no effet.
@@ -80,28 +73,21 @@ The `weight` option defines the weight of the server for the load balancing algo
[http.services.my-service.LoadBalancer]
[[http.services.my-service.LoadBalancer.servers]]
url = "http://private-ip-server-1/"
weight = 1
```
#### Load-balancing
Various methods of load balancing are supported:
For now, only round robin load balancing is supported:
- `wrr`: Weighted Round Robin.
- `drr`: Dynamic Round Robin: increases weights on servers that perform better than others (rolls back to original weights when the server list is updated)
??? example "Load Balancing Using DRR -- Using the [File Provider](../../providers/file.md)"
??? example "Load Balancing -- Using the [File Provider](../../providers/file.md)"
```toml
[http.services]
[http.services.my-service.LoadBalancer]
method = "drr"
[[http.services.my-service.LoadBalancer.servers]]
url = "http://private-ip-server-1/"
weight = 1
[[http.services.my-service.LoadBalancer.servers]]
url = "http://private-ip-server-1/"
weight = 1
```
#### Sticky sessions
@@ -239,7 +225,3 @@ The `address` option (IP:Port) point to a specific instance.
[[tcp.services.my-service.LoadBalancer.servers]]
address = "xx.xx.xx.xx:xx"
```
!!! note "Weight"
The TCP LoadBalancer is currently a round robin only implementation and doesn't yet support weights.