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Centralized Configuration using Consul and Spri...

Centralized Configuration using Consul and Spring Cloud

Centralized Configuration using Consul and Spring Cloud

Eko Kurniawan Khannedy

February 12, 2018
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  1. CENTRALIZED CONFIGURATION WHAT IS CONSUL? ▸ Service Discovery (via DNS

    or HTTP) ▸ Failure Detection (health checking) ▸ Key-Value Storage (for dynamic configuration) ▸ Multi Datacenter
  2. CENTRALIZED CONFIGURATION CONSUL CLUSTER ARCHITECTURE ▸ Datacenter ▸ Agent, a

    the long running daemon on every member of the Consul cluster ▸ Server, an agent with an expanded set of responsibilities ▸ Client, an agent that forwards all RPCs to a server
  3. CENTRALIZED CONFIGURATION SETUP CONSUL CLUSTER IP Address Role 192.0.0.1 Bootstrap

    Consul Server 192.0.0.2 Consul Server 192.0.0.3 Consul Server
  4. CENTRALIZED CONFIGURATION SETUP CONSUL SERVER 1 (BOOTSTRAP) {
 “bootstrap”: true,


    “server”: true,
 “datacenter”: “blibli",
 “data_dir”: “/opt/var/consul”,
 “log_level”: “INFO”,
 “bind_addr” : “192.0.0.1”,
 “client_addr” : “192.0.0.1”
 }
  5. CENTRALIZED CONFIGURATION SETUP CONSUL SERVER 2 {
 “bootstrap”: false,
 “server”:

    true,
 “datacenter”: “blibli",
 “data_dir”: “/opt/var/consul”,
 “log_level”: “INFO”,
 “bind_addr” : “192.0.0.2”,
 “client_addr” : “192.0.0.2”,
 “start_join” : [ “192.0.0.1”, “192.0.0.3” ]
 }
  6. CENTRALIZED CONFIGURATION SETUP CONSUL SERVER 3 {
 “bootstrap”: false,
 “server”:

    true,
 “datacenter”: “blibli",
 “data_dir”: “/opt/var/consul”,
 “log_level”: “INFO”,
 “bind_addr” : “192.0.0.3”,
 “client_addr” : “192.0.0.3”,
 “start_join” : [ “192.0.0.1”, “192.0.0.2” ]
 }
  7. CENTRALIZED CONFIGURATION SETUP CONSUL CLIENT {
 “server”: false,
 “datacenter”: “blibli",


    “data_dir”: “/opt/var/consul”,
 “log_level”: “INFO”,
 “bind_addr” : “192.0.1.1”,
 “client_addr” : “192.0.1.1”,
 “start_join” : [ “192.0.0.1”, “192.0.0.2”, “192.0.0.3” ]
 }
  8. CENTRALIZED CONFIGURATION START CONSUL AGENT consul agent -ui -config-dir /opt/consul/config

    ▸ All consul configuration saved as json file in a directory. ▸ Consul automatically read all json file in config directory.