2018-06-08 13:58:47 +00:00
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# Docker service discover
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Odpalenie tego na maszynie developerskiej powoduje, że wszystkie usługi dostają swoją nazwę domenową.
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Do poprawnej pracy wymaga (najłatwiej) skonfigurowanego lokalnego serwera DNS. Lokalnie fajnie działa
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dnsmasq z odpowiednią konfiguracją:
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W pliku ```/etc/dnsmasq.d/10-consul``` umieszczamy:
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```
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server=/consul/127.0.0.1#8600
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```
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Dzięki takiej konfiguracji demon docker'a korzystający z lokalnego DNS'a będzie miał dostęp do domen tworzonych przez consul'a
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2018-06-08 15:00:07 +00:00
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Przykład:
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```
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dig consul.service.dev.consul SRV
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; <<>> DiG 9.12.1-P2 <<>> consul.service.dev.consul SRV
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;; global options: +cmd
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;; Got answer:
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;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 23082
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;; flags: qr aa rd ra; QUERY: 1, ANSWER: 7, AUTHORITY: 0, ADDITIONAL: 9
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;; OPT PSEUDOSECTION:
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; EDNS: version: 0, flags:; udp: 4096
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;; QUESTION SECTION:
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;consul.service.dev.consul. IN SRV
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;; ANSWER SECTION:
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consul.service.dev.consul. 0 IN SRV 1 1 8300 ac190003.addr.dev.consul.
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consul.service.dev.consul. 0 IN SRV 1 1 8300 b39af5152084.node.dev.consul.
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consul.service.dev.consul. 0 IN SRV 1 1 8600 ac190003.addr.dev.consul.
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consul.service.dev.consul. 0 IN SRV 1 1 8400 ac190003.addr.dev.consul.
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consul.service.dev.consul. 0 IN SRV 1 1 8302 ac190003.addr.dev.consul.
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consul.service.dev.consul. 0 IN SRV 1 1 8301 ac190003.addr.dev.consul.
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consul.service.dev.consul. 0 IN SRV 1 1 8500 ac190003.addr.dev.consul.
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;; ADDITIONAL SECTION:
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ac190003.addr.dev.consul. 0 IN A 172.25.0.3
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b39af5152084.node.dev.consul. 0 IN A 127.0.0.1
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b39af5152084.node.dev.consul. 0 IN TXT "consul-network-segment="
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ac190003.addr.dev.consul. 0 IN A 172.25.0.3
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ac190003.addr.dev.consul. 0 IN A 172.25.0.3
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ac190003.addr.dev.consul. 0 IN A 172.25.0.3
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ac190003.addr.dev.consul. 0 IN A 172.25.0.3
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ac190003.addr.dev.consul. 0 IN A 172.25.0.3
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;; Query time: 9 msec
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;; SERVER: 127.0.0.1#53(127.0.0.1)
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;; WHEN: pią cze 08 16:59:32 CEST 2018
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;; MSG SIZE rcvd: 514
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```
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