consul-常用命令
阿新 • • 發佈：2021-08-12
1、consul 是B/C架構。服務端和客戶端包是一樣的。差別在於啟動時候的引數。
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--客戶端
./consul agent -join=172.29.2.65:8301 -bind=172.29.3.164 -client=172.29.3.164 -data-dir=/app/consul/data -node=client1 -encrypt=eOC89RMstTVHq92WTb8ExQ==
--服務端
nohup consul agent -server -bind=0.0.0.0 -client=0.0.0.0 -bootstrap-expect=1 -data-dir=/app/consul/data/server -node=server1 -encrypt=eOC89RMstTVHq92WTb8ExQ== -ui & |
2、常用命令
檢視成員 [root@LAPP-V576 ~]# consul members Node Address Status Type Build Protocol DC Segment server1 172.29.2.65:8301 alive server 1.0.7 2 dc1 <all> client1 172.29.3.164:8301 alive client 1.0.7 2 dc1 <default> 產生公用的祕鑰： [root@LAPP-V576 ~]# consul keygen hHps7HHRPFvswm5VPeRx1g== 檢視版本號： [root@LAPP-V576 ~]# consul version Consul v1.0.7 Protocol 2 spoken by default, understands 2 to 3 (agent will automatically use protocol >2 when speaking to compatible agents)
4、consul服務查詢和post 手工模擬註冊服務
手工註冊一個服務：
curl -X PUT -d '' http://172.29.3.164:8500/v1/catalog/register
檢視當前的node
[root@LAPP-V454 bin]# curl 172.29.3.164:8500/v1/catalog/nodes
[{"ID":"","Node":"client1","Address":"172.29.3.164","Datacenter":"dc1","TaggedAddresses":null,"Meta":null,"CreateIndex":241,"ModifyIndex":471},{"ID":"601cd493-489e-3efa-f6b7-fa7fa1e95caa","Node":"server1","Address":"172.29.2.65","Datacenter":"dc1","TaggedAddresses":{"lan":"172.29.2.65","wan":"172.29.2.65"},"Meta":{"consul-network-segment":""},"CreateIndex":5,"ModifyIndex":6}][root@LAPP-V454 bin]#
檢視服務：
[root@LAPP-V454 bin]# dig @172.29.3.164 -p 8600 test01.node.consul SRV
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.17.rc1.el6_4.6 <<>> @172.29.3.164 -p 8600 test01.node.consul SRV
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 62327
;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available
;; QUESTION SECTION:
;test01.node.consul. IN SRV
;; Query time: 0 msec
;; SERVER: 172.29.3.164#8600(172.29.3.164)
;; WHEN: Wed Oct 16 16:56:59 2019
;; MSG SIZE rcvd: 365、consul服務註冊、健康檢查和查詢
{
"ID": "userServiceId", //服務id
"Name": "userService", //服務名
"Tags": [ //服務的tag，自定義，可以根據這個tag來區分同一個服務名的服務
"primary",
"v1"
],
"Address": "127.0.0.1",//服務註冊到consul的IP，服務發現，發現的就是這個IP
"Port": 8000, //服務註冊consul的PORT，發現的就是這個PORT
"EnableTagOverride": false,
"Check": { //健康檢查部分
"DeregisterCriticalServiceAfter": "90m",
"HTTP": "http://www.baidu.com", //指定健康檢查的URL，呼叫後只要返回20X，consul都認為是健康的
"Interval": "10s" //健康檢查間隔時間，每隔10s，呼叫一次上面的URL
}
}
啟動本機上的tomcat
保證
http://172.29.3.164:8080 返回200
註冊服務
curl -X PUT -d '{"Datacenter": "dc1","Service": {"Service": "test01", "tags": ["dev"],"address": "172.29.3.164", "Port": 8080
"checks": [ {
"http": "http://172.29.3.164:8080",
"interval": "5s"
}
}}' http://172.29.3.164:8500/v1/catalog/register
查詢服務：
curl http://172.29.2.65:8500/v1/catalog/service/test01
[{"ID":"e2f76ac4-4086-f85e-8eeb-d67c7e46e30a","Node":"client1","Address":"172.29.3.164","Datacenter":"dc1","TaggedAddresses":{"lan":"172.29.3.164","wan":"172.29.3.164"},"NodeMeta":{"consul-network-segment":""},"ServiceID":"test01","ServiceName":"test01","ServiceTags":["ceis","font"],"ServiceAddress":"172.29.3.164","ServiceMeta":{},"ServicePort":8080,"ServiceEnableTagOverride":false,"CreateIndex":749,"ModifyIndex":749}][root@LAPP-V454 yyapp]#
返回結果測試：
6、consul 常用其他
登出微服務 curl -s -X PUT "http://$CONSUL_NODE/v1/agent/service/maintenance/$SERVER_ID?enable=true&reason=Deploy_New_Versiont" # 等待30秒 sleep 30 # 登出舊服務 curl -s -X PUT "http://$CONSUL_NODE/v1/agent/service/deregister/$SERVER_ID"
curl -s -X PUT "http://172.29.2.65:8500/v1/agent/service/maintenance/test01?enable=true&reason=Deploy_New_Versiont" curl -s -X PUT "http://172.29.2.65:8500/v1/agent/service/deregister/test01"
測試效果圖：