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Docker swarm modeでfluentdにログを集約する際の注意点

Posted at

swarm + fluentdを試していた時にちょっとつまづいたのでメモ。

予めfluentのサービスを起動
$ docker service create --name logger -p 24224:24224 fluent/fluentd
続けてnginxを起動
$ docker service create --name nginx -p 80:80 \
  --replicas 2 --log-driver=fluentd \
  --log-opt=fluentd-address=localhost:24224 nginx

fluentdにログが集約されるはずが、記録されていない。

こちらの情報によると、NAT64がサポートされていない模様。
127.0.0.1に書き換えてみる。

変更後
$ docker service create --name nginx -p 80:80 \
  --replicas 2 --log-driver=fluentd \
  --log-opt=fluentd-address=127.0.0.1:24224 nginx

正常に記録されるようになった。

参考文献

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