Arch
See alos： https://github.com/DavadDi/envoy_discovery
Start SDS/EDS server
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| $ cd eds_server/
$ virtualenv env --python=python2.7
$ source env/bin/activate
$ pip install -r requirements.txt
$ python main.py
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Start upstream server
Start server 01
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| $ cd upstream/
$ virtualenv env --python=python2.7
$ source env/bin/activate
$ pip install -r requirements.txt
$ python server.py -p 8081
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Start server 02
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| $ cd upstream/
$ python server.py -p 8082
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Register upstream server info to SDS/EDS Server, named “myservice”
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| # PUT AND Post share the same format
$ curl -XPOST --header 'Content-Type: application/json' --header 'Accept: application/json' -d '{
"hosts": [
{
"ip_address": "127.0.0.1",
"port": 8081,
"tags": {
"server01": "8081",
"canary": false,
"load_balancing_weight": 50
}
},
{
"ip_address": "127.0.0.1",
"port": 8082,
"tags": {
"server01": "8082",
"canary": false,
"load_balancing_weight": 50
}
}
]
}' http://localhost:8080/edsservice/myservice
# list info
$ curl -XGET http://localhost:8080/edsservice/myservice
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Start Envoy
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| $ envoy -c envoy_config.yaml --v2-config-only -l debug
$ docker run --rm -v `pwd`/envoy_config.yaml:/etc/envoy_config.yaml lyft/envoy:latest /usr/local/bin/envoy --config-path /etc/envoy_config.yaml -l debug
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envoy_config.yaml likes this:
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| admin:
access_log_path: /dev/null
address:
socket_address:
address: 127.0.0.1
port_value: 9000
node:
cluster: mycluster
id: test-id
static_resources:
listeners:
- name: listener_0
address:
socket_address: { address: 0.0.0.0, port_value: 10000 }
filter_chains:
- filters:
- name: envoy.http_connection_manager
config:
stat_prefix: ingress_http
codec_type: AUTO
route_config:
name: local_route
virtual_hosts:
- name: local_service
domains: ["*"]
routes:
- match: { prefix: "/" }
route: { cluster: service_backend }
http_filters:
- name: envoy.router
clusters:
- name: service_backend
type: EDS
connect_timeout: 0.25s
eds_cluster_config:
service_name: myservice
eds_config:
api_config_source:
api_type: REST
cluster_names: [eds_cluster]
refresh_delay: 5s
- name: eds_cluster
type: STATIC
connect_timeout: 0.25s
hosts: [{ socket_address: { address: 127.0.0.1, port_value: 8080 }}]
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Test
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| $ curl -v http://127.0.0.1:10000/
curl -v http://127.0.0.1:10000/
* Trying 127.0.0.1...
* TCP_NODELAY set
* Connected to 127.0.0.1 (127.0.0.1) port 10000 (
> GET / HTTP/1.1
> Host: 127.0.0.1:10000
> User-Agent: curl/7.54.0
> Accept: */*
>
< HTTP/1.1 200 OK
< content-type: text/html; charset=utf-8
< content-length: 36
< server: envoy
< date: Thu, 28 Jun 2018 03:50:48 GMT
< x-envoy-upstream-service-time: 1
<
* Connection
bc8d7c3f-575b-43fb-beff-dd711d9f0b93
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All upstream servers are unavailable，errors like this：
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| $ curl -v http://localhost:10000/
...
< HTTP/1.1 503 Service Unavailable
< content-length: 19
< content-type: text/plain
< date: Mon, 30 Apr 2018 06:06:20 GMT
< server: envoy
<
* Connection
no healthy upstreams
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See
- envoy-discovery-hello-world
- Envoy control plane ‘hello world’
