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Consul » History » Revision 2

Revision 1 (Peter Amstutz, 10/25/2016 11:35 PM) → Revision 2/7 (Peter Amstutz, 10/26/2016 12:49 AM)

h1. Consul 

 # Service packages have dependency on consul. 
 # Consul package runs automatically from systemd unit. 
 # Consul updates /etc/resolve.conf to use consul as DNS resolver (?) 
 # Packages provide /etc/consul.d/package.json (e.g. /etc/consul.d/keepproxy.json) 

 Each service must have a unique id, but may have a common name, for example: 

 <pre> 
 { 
   "service": { 
     "id": "zzzzz-bi6l4-ydim6qekt9ut47f", 
     "name": "keep", 
     "port": 80 
   } 
 } 
 </pre> 

 <pre> 
 { 
   "service": { 
     "id": "zzzzz-bi6l4-9e7boja2v94hfj5", 
     "name": "keep", 
     "port": 80 
   } 
 } 
 </pre> 

 A query on the "keep" service returns multiple nodes: 

 <pre> 
 $ curl http://localhost:8500/v1/catalog/service/keep | jq . 
 [ 
   { 
     "Node": "debian", 
     "Address": "127.0.0.1", 
     "TaggedAddresses": { 
       "lan": "127.0.0.1", 
       "wan": "127.0.0.1" 
     }, 
     "ServiceID": "zzzzz-bi6l4-9e7boja2v94hfj5", 
     "ServiceName": "keep", 
     "ServiceTags": [], 
     "ServiceAddress": "", 
     "ServicePort": 443, 
     "ServiceEnableTagOverride": false, 
     "CreateIndex": 7, 
     "ModifyIndex": 7 
   }, 
   { 
     "Node": "debian", 
     "Address": "127.0.0.1", 
     "TaggedAddresses": { 
       "lan": "127.0.0.1", 
       "wan": "127.0.0.1" 
     }, 
     "ServiceID": "zzzzz-bi6l4-ydim6qekt9ut47f", 
     "ServiceName": "keep", 
     "ServiceTags": [], 
     "ServiceAddress": "", 
     "ServicePort": 80, 
     "ServiceEnableTagOverride": false, 
     "CreateIndex": 6, 
     "ModifyIndex": 6 
   } 
 ] 
 </pre>