Azure App Service(Java)+Azure Redis Cacheでセッションレプリケーション

サーバーサイドでセッション管理を行うようなWebアプリケーションをAzure App Service上で動作させる時、考えるのはセッション情報の保持をどこで行うかです。本エントリーでは、Spring BootのWebアプリケーション上でのSpring Securityでのセッション管理をAzureのRedis Cacheでレプリケーションする方法をまとめます。

そんなにこったアーキテクチャーでないしすぐ終わるだろう、と思ったら、Redisに対してSSL/TLS接続するところではまったので、このエントリーは無駄に長いです。

Azure Redis Cache

AzureによるRedisのフルマネージドサービスです。詳しくはこちら。

qiita.com

アプリケーションの実装

spring.io

に従ってSpring Boot + Spring Secutiryのアプリを実装します。でき上がったものはこちらです。

pom.xmlに、以下の依存性を追加します。

        <dependency>
            <groupId>org.springframework.session</groupId>
            <artifactId>spring-session-data-redis</artifactId>
            <version>2.0.4.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>io.lettuce</groupId>
            <artifactId>lettuce-core</artifactId>
            <version>5.0.4.RELEASE</version>
        </dependency>

Redis Cacheの作成

メニューにしたがってポチポチ作成します。アプリケーションの接続先に必要な設定は「アクセスキー」のメニューから取得します。

SSL接続対応

Azure Redis CacheとSpring Boot Initializerの組み合わせについては、以下のドキュメントがあるのですが、このドキュメントではRedisに対して非SSLなポート(6379)のポートを解放して接続を行っています。

docs.microsoft.com

SSL/TLSで対応するには、本来application.propertiesにspring.redis.ssl=trueを記述すればよいのはずなのですが、以下にあげる二点の問題があります。

1.io.lettuce.core.RedisCommandExecutionException: ERR unknown command: CONFIG

スタックトレースがひたすら長いのですが、全部のせるとこんな感じ。

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2018-07-04 04:33:56.021 ERROR 20792 --- [           main] o.s.boot.SpringApplication               : Application run failed
 
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'enableRedisKeyspaceNotificationsInitializer' defined in class path resource [org/springframework/session/data/redis/config/annotation/web/http/RedisHttpSessionConfiguration.class]: Invocation of init method failed; nested exception is org.springframework.data.redis.RedisSystemException: Error in execution; nested exception is io.lettuce.core.RedisCommandExecutionException: ERR unknown command: CONFIG
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1708) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:581) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:503) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:760) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at hello.Application.main(Application.java:11) [classes/:na]
Caused by: org.springframework.data.redis.RedisSystemException: Error in execution; nested exception is io.lettuce.core.RedisCommandExecutionException: ERR unknown command: CONFIG
    at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:54) ~[spring-data-redis-2.0.8.RELEASE.jar:2.0.8.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:52) ~[spring-data-redis-2.0.8.RELEASE.jar:2.0.8.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:41) ~[spring-data-redis-2.0.8.RELEASE.jar:2.0.8.RELEASE]
    at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:44) ~[spring-data-redis-2.0.8.RELEASE.jar:2.0.8.RELEASE]
    at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:42) ~[spring-data-redis-2.0.8.RELEASE.jar:2.0.8.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceConnection.convertLettuceAccessException(LettuceConnection.java:257) ~[spring-data-redis-2.0.8.RELEASE.jar:2.0.8.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceServerCommands.convertLettuceAccessException(LettuceServerCommands.java:571) ~[spring-data-redis-2.0.8.RELEASE.jar:2.0.8.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceServerCommands.getConfig(LettuceServerCommands.java:307) ~[spring-data-redis-2.0.8.RELEASE.jar:2.0.8.RELEASE]
    at org.springframework.data.redis.connection.DefaultedRedisConnection.getConfig(DefaultedRedisConnection.java:1119) ~[spring-data-redis-2.0.8.RELEASE.jar:2.0.8.RELEASE]
    at org.springframework.session.data.redis.config.ConfigureNotifyKeyspaceEventsAction.getNotifyOptions(ConfigureNotifyKeyspaceEventsAction.java:76) ~[spring-session-data-redis-2.0.4.RELEASE.jar:2.0.4.RELEASE]
    at org.springframework.session.data.redis.config.ConfigureNotifyKeyspaceEventsAction.configure(ConfigureNotifyKeyspaceEventsAction.java:57) ~[spring-session-data-redis-2.0.4.RELEASE.jar:2.0.4.RELEASE]
    at org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration$EnableRedisKeyspaceNotificationsInitializer.afterPropertiesSet(RedisHttpSessionConfiguration.java:286) ~[spring-session-data-redis-2.0.4.RELEASE.jar:2.0.4.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1767) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1704) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    ... 16 common frames omitted
Caused by: io.lettuce.core.RedisCommandExecutionException: ERR unknown command: CONFIG
    at io.lettuce.core.protocol.AsyncCommand.completeResult(AsyncCommand.java:118) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.lettuce.core.protocol.AsyncCommand.complete(AsyncCommand.java:109) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.lettuce.core.protocol.CommandHandler.complete(CommandHandler.java:598) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:556) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.lettuce.core.protocol.CommandHandler.channelRead(CommandHandler.java:508) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1434) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:647) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:582) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:499) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:461) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884) ~[netty-common-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.25.Final.jar:4.1.25.Final]
    at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_162]

これはspring-sessionでRedisにTLS/SSL接続するときの既知の問題です。

github.com

これに対応するには、@Configurationと@EnableRedisHttpSessionを記述したクラスで、

package hello;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.session.data.redis.config.ConfigureRedisAction;
import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession;

import java.util.Properties;

@Configuration
@EnableRedisHttpSession
public class Config {

    @Bean
    public static ConfigureRedisAction configureRedisAction() {
        return ConfigureRedisAction.NO_OP;
    }
}

のように記述するのですが、NO_OPを指定すると認証処理までスキップされるので、今度はこのようなエラーになります。

org.springframework.data.redis.RedisSystemException: Error in execution; nested exception is io.lettuce.core.RedisCommandExecutionException: NOAUTH Authentication required.
    at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:54) ~[spring-data-redis-2.0.8.RELEASE.jar:2.0.8.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:52) ~[spring-data-redis-2.0.8.RELEASE.jar:2.0.8.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:41) ~[spring-data-redis-2.0.8.RELEASE.jar:2.0.8.RELEASE]
    at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:44) ~[spring-data-redis-2.0.8.RELEASE.jar:2.0.8.RELEASE]
    at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:42) ~[spring-data-redis-2.0.8.RELEASE.jar:2.0.8.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceConnection.convertLettuceAccessException(LettuceConnection.java:257) ~[spring-data-redis-2.0.8.RELEASE.jar:2.0.8.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceConnection.pSubscribe(LettuceConnection.java:795) ~[spring-data-redis-2.0.8.RELEASE.jar:2.0.8.RELEASE]
    at org.springframework.data.redis.listener.RedisMessageListenerContainer$SubscriptionTask.eventuallyPerformSubscription(RedisMessageListenerContainer.java:785) ~[spring-data-redis-2.0.8.RELEASE.jar:2.0.8.RELEASE]
    at org.springframework.data.redis.listener.RedisMessageListenerContainer$SubscriptionTask.run(RedisMessageListenerContainer.java:752) ~[spring-data-redis-2.0.8.RELEASE.jar:2.0.8.RELEASE]
    at java.lang.Thread.run(Thread.java:748) [na:1.8.0_162]
Caused by: io.lettuce.core.RedisCommandExecutionException: NOAUTH Authentication required.
    at io.lettuce.core.protocol.AsyncCommand.completeResult(AsyncCommand.java:118) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.lettuce.core.protocol.AsyncCommand.complete(AsyncCommand.java:109) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.lettuce.core.protocol.CommandHandler.complete(CommandHandler.java:598) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.lettuce.core.pubsub.PubSubCommandHandler.complete(PubSubCommandHandler.java:142) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:556) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.lettuce.core.pubsub.PubSubCommandHandler.decode(PubSubCommandHandler.java:87) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.lettuce.core.protocol.CommandHandler.channelRead(CommandHandler.java:508) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1434) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:647) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:582) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:499) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:461) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884) ~[netty-common-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.25.Final.jar:4.1.25.Final]
    ... 1 common frames omitted

これに対応するには、LettuceConnectionFactory を返す@Beanメソッド内で接続先情報を指定するようにします。これを指定したクラスは以下の通りとなります。

package hello;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.session.data.redis.config.ConfigureRedisAction;
import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession;

import java.util.Properties;

@Configuration
@EnableRedisHttpSession
public class Config {

    @Bean
    public LettuceConnectionFactory connectionFactory() {
        LettuceConnectionFactory lettuceConnectionFactory =  new LettuceConnectionFactory();
        lettuceConnectionFactory.setHostName(System.getenv("spring_redis_host"));
        lettuceConnectionFactory.setPassword(System.getenv("spring_redis_password"));
        lettuceConnectionFactory.setPort(6380);
        lettuceConnectionFactory.setUseSsl(true);

        return lettuceConnectionFactory;
    }

    @Bean
    public static ConfigureRedisAction configureRedisAction() {
        return ConfigureRedisAction.NO_OP;
    }
}

なお当初は、org.springframework.core.env.Environment をInjectionしてapplication.propertiesにしていた記述を読み込もうとしたのですが、Azure App Serviceにデプロイするとapplication.propertiesに記述した 設定を読み込まずにデフォルト接続先(localhost:6379)に接続に行くという問題が解消されなかったので、 @kazuyukimiyake のアドバイスもあり、Azureポータル上でアプリケーション設定に記述した値を読み込むようにしています。ありがとうございました。

環境や状況がよくわかりませんが、通常接続先はApp Settingsに書くものかと。

— miyake@PaaSがかり (@kazuyukimiyake) July 5, 2018

アプリケーションの動作の確認

以下は、App Serviceにデプロイしたアプリを2インスタンスにスケールアウトして、Spring Securityによるログイン処理が行われていることを確認した様子です。