request help: Could APISIX use nacos as registry center

[keven0706]

Issue description

apisix can user nacos for regestry center?

Environment

• apisix version (cmd: apisix version):
• OS:

[membphis]

that is todo, welcome PR.

[moonming]

@keven0706 nacos supports DNS-based Service Discovery, so you can change the dns_resolver in config.yaml to nacos.
And Consul is the same way to works with APISIX, you can refer to this script: https://gist.github.com/moonming/32aed4922ea428db1abfe2edfd730b3a

[moonming]

that is todo, welcome PR.

It is not a todo, Apache APISIX can works well with nacos and consul.

[membphis]

I think only support DNS-based Service Discovery for nacos is not enough.

The nacos call it Dynamic Configuration Management, Apache APISIX need to support both of them.

[membphis]

nacos supports DNS-based Service Discovery,

It needs to be written into the document.

[HuangDayu]

@keven0706 nacos supports DNS-based Service Discovery, so you can change the dns_resolver in config.yaml to nacos.
And Consul is the same way to works with APISIX, you can refer to this script: https://gist.github.com/moonming/32aed4922ea428db1abfe2edfd730b3a

China cannot access gist, can you provide a document? Thank you. issues/2431

[juzhiyuan]

Install Consul

1. download consul

$ wget https://releases.hashicorp.com/consul/1.7.3/consul_1.7.3_linux_amd64.zip

2. unzip to /usr/bin

$ sudo unzip consul_1.7.3_linux_amd64.zip -d /usr/bin

3. create consul service file

$ sudo vim /lib/systemd/system/consul.service

[Unit]
Description=consul
[Service]
ExecStart=/usr/bin/consul agent -config-dir /etc/consul
KillSignal=SIGINT

4. create server json file

$ sudo mkdir /etc/consul/

$ sudo vim /etc/consul/server.json

{
	"data_dir": "/var/consul",
	"log_level": "INFO",
	"node_name": "test",
	"server": true,
	"ui": true,
	"bootstrap_expect": 1,
	"client_addr": "0.0.0.0",
	"advertise_addr": "127.0.0.1",
	"ports": {
		"dns": 53
	},	
	"advertise_addr_wan": "127.0.0.1"
}

5. start consul

$ sudo systemctl start consul

start service - golang version

$ git clone https://github.com/api7/consul-test-golang.git

$ cd consul-test-golang

$ nohup go run main.go &

install etcd -- need by Apache APISIX

$ sudo yum install etcd

$ nohup /usr/bin/etcd --enable-v2=true &

install openresty -- need by Apache APISIX

$ wget https://openresty.org/package/centos/openresty.repo

$ sudo mv openresty.repo /etc/yum.repos.d/

$ sudo yum install openresty -y

install Apache APISIX

1. install from RPM, and you can get the latest version from https://github.com/apache/incubator-apisix/releases

$ wget https://github.com/apache/incubator-apisix/releases/download/1.3/apisix-1.3-0.el7.noarch.rpm

$ sudo yum install apisix-1.3-0.el7.noarch.rpm -y

2. change config.yaml

$ vi /usr/local/apisix/conf/config.yaml

$ add consul address to `dns_resolver`：

  dns_resolver:
   - 127.0.0.1

3. start Apache APISIX:

$ sudo apisix start

Test

1. add route in Apache APISIX:

$ curl http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -i -d '
{
    "uri": "/healthz",
    "upstream": {
        "type": "roundrobin",
        "nodes": {
            "go-consul-test.service.consul:8080": 1
        }
    }
}'

go-consul-test.service.consul is registered DNS SRV by consul-test-golang service

2. test：

$ curl http://127.0.0.1:9080/healthz

will return:

{"message":"consul test healthz"}

Cool, it works!

If you have any questions, please goto https://github.com/apache/incubator-apisix

[juzhiyuan]

@keven0706 nacos supports DNS-based Service Discovery, so you can change the dns_resolver in config.yaml to nacos.
And Consul is the same way to works with APISIX, you can refer to this script: https://gist.github.com/moonming/32aed4922ea428db1abfe2edfd730b3a

China cannot access gist, can you provide a document? Thank you. issues/2431

I just copied those steps from here[1], not sure if it's what you need.

[1] https://gist.github.com/moonming/32aed4922ea428db1abfe2edfd730b3a

[HuangDayu]

@juzhiyuan 非常感谢，我也看到了这篇博文。 Apache APISIX 101：如何使用 Consul 作为注册中心？
但是nacos的dns需要使用额外的服务生成，然而我再安装这个服务时，再次遇到了问题。

https://github.com/nacos-group/nacos-coredns-plugin
https://github.com/coredns/coredns
https://github.com/caddyserver/caddy

go get -u github.com/mholt/caddy
go: github.com/mholt/caddy upgrade => v1.0.5
go get: github.com/mholt/caddy@v1.0.5: parsing go.mod:
        module declares its path as: github.com/caddyserver/caddy
                but was required as: github.com/mholt/caddy
make: *** [godeps] Error 1

因为对Go不熟悉，在网上也找不到可行的解决方案，又卡在这了。

[juzhiyuan]

Not sure what happened, just be patient to wait for others' reply.

[spacewander]

go get -u github.com/mholt/caddy

Why did you run this command?
When you install coredns, the caddy will be installed as a dependency. There should be no need to install it manually.
Or do I miss something?