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Tomcat集群session共享

2020/03/23 — tomcat — 1 min read

tomcat session复制

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1<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>

这一行配置等同于下面的配置文件，开启一个即可，下面的配置可以修改配置信息
1<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"
2                 channelSendOptions="8">

1<Manager className="org.apache.catalina.ha.session.DeltaManager"
2               expireSessionsOnShutdown="false"
3               notifyListenersOnReplication="true"/>
4
5      <Channel className="org.apache.catalina.tribes.group.GroupChannel">
6        <Membership className="org.apache.catalina.tribes.membership.McastService"
7                    address="228.0.0.4"
8                    port="45564"
9                    frequency="500"
10                    dropTime="3000"/>
11        <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
12                  address="auto"
13                  port="4000"
14                  autoBind="100"
15                  selectorTimeout="5000"
16                  maxThreads="6"/>
17
18        <Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter">
19          <Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>
20        </Sender>
21        <Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>
22        <Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/>
23      </Channel>
24
25      <Valve className="org.apache.catalina.ha.tcp.ReplicationValve"
26             filter=""/>
27      <Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>
28
29      <Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer"
30                tempDir="/tmp/war-temp/"
31                deployDir="/tmp/war-deploy/"
32                watchDir="/tmp/war-listen/"
33                watchEnabled="false"/>
34
35      <ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener">
36      <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener">
37    </Cluster>

1修改上面的`address="auto"`为对应的集群地址。
2## tomcat redis存放session
3### tomcat-redis-session-manager
4刚开始使用的是这种方法，这个只支持tomcat7并且作者已经很久没有更新了。
5```xml
6<Valve className="com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve" />
7<Manager className="com.orangefunction.tomcat.redissessions.RedisSessionManager"
8         host="localhost" <!-- optional: defaults to "localhost" -->
9         port="6379" <!-- optional: defaults to "6379" -->
10         database="0" <!-- optional: defaults to "0" -->
11         maxInactiveInterval="60" <!-- optional: defaults to "60" (in seconds) -->
12         sessionPersistPolicies="PERSIST_POLICY_1,PERSIST_POLICY_2,.." <!-- optional -->
13         sentinelMaster="SentinelMasterName" <!-- optional -->
14         sentinels="sentinel-host-1:port,sentinel-host-2:port,.." <!-- optional --> />

按上面的配置然后下载下面的jar包运行tomcat报class not found的问题，原因是jar包的路径名称已经修改了。

复制下面三个jar包到tomcat的lib目录下：

tomcat-redis-session-manager-VERSION.jar 下面这两个去maven仓库搜索下载jar jedis-2.5.2.jar commons-pool2-2.2.jar

redisson-tomcat

tomcat中启用Redisson前提：在lib下添加两个jar包这个支持tomcat现有的版本（6，7，8，9）。

$catalina_home/conf/context.xml当中指定redisson：

1<!-- 单Redis Session共享管理 -->
2<Manager className="org.redisson.tomcat.RedissonSessionManager" configPath="${catalina.base}/conf/redission-single.json" readMode="REDIS" updateMode="DEFAULT"/>
3<Manager className="org.redisson.tomcat.RedissonSessionManager" configPath="${catalina.base}/conf/redission-single.json" readMode="MEMORY" updateMode="AFTER_REQUEST"/>
4<!-- 多Redis集群 Session共享管理 -->
5<Manager className="org.redisson.tomcat.RedissonSessionManager" configPath="${catalina.base}/conf/redission-cluster.json" readMode="REDIS" updateMode="DEFAULT"/>

创建Redisson配置信息 redission-single.json内容：单redis情况

1{
2    "singleServerConfig": {
3        "idleConnectionTimeout": 10000,
4        "pingTimeout": 1000,
5        "connectTimeout": 10000,
6        "timeout": 3000,
7        "retryAttempts": 3,
8        "retryInterval": 1500,
9        "password": null,
10        "subscriptionsPerConnection": 5,
11        "clientName": null,
12        "address": "redis://redis:6379",
13        "subscriptionConnectionMinimumIdleSize": 1,
14        "subscriptionConnectionPoolSize": 50,
15        "connectionMinimumIdleSize": 32,
16        "connectionPoolSize": 64,
17        "database": 0,
18        "dnsMonitoringInterval": 5000
19    },
20    "threads": 0,
21    "nettyThreads": 0,
22    "codec": {
23        "class": "org.redisson.codec.SerializationCodec"
24    },
25    "transportMode": "NIO"
26}

redission-cluster.json内容：多redis情况，只需配置从redis地址

1{
2    "clusterServersConfig": {
3        "idleConnectionTimeout": 10000,
4        "pingTimeout": 1000,
5        "connectTimeout": 10000,
6        "timeout": 3000,
7        "retryAttempts": 3,
8        "retryInterval": 1500,
9        "failedSlaveReconnectionInterval": 3000,
10        "failedSlaveCheckInterval": 60000,
11        "password": null,
12        "subscriptionsPerConnection": 5,
13        "clientName": null,
14        "loadBalancer": {
15            "class": "org.redisson.connection.balancer.RoundRobinLoadBalancer"
16        },
17        "subscriptionConnectionMinimumIdleSize": 1,
18        "subscriptionConnectionPoolSize": 50,
19        "slaveConnectionMinimumIdleSize": 32,
20        "slaveConnectionPoolSize": 64,
21        "masterConnectionMinimumIdleSize": 32,
22        "masterConnectionPoolSize": 64,
23        "readMode": "SLAVE",
24        "subscriptionMode": "SLAVE",
25        "nodeAddresses": [
26            "redis://127.0.0.1:7004",
27            "redis://127.0.0.1:7001",
28            "redis://127.0.0.1:7000"
29        ],
30        "scanInterval": 1000,
31        "pingConnectionInterval": 0,
32        "keepAlive": false,
33        "tcpNoDelay": false
34    },
35    "threads": 0,
36    "nettyThreads": 0,
37    "codec": {
38        "class": "org.redisson.codec.SerializationCodec"
39    },
40    "transportMode": "NIO"
41}

实际存储的类型是hash，key类似redisson:tomcat_session:1CF4CF29EADCB3695FDB8E183B69A523。

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