CAS 集羣部署

業務場景

單點登陸服務器若是壓力過大的狀況，那麼能夠使用集羣分擔壓力，可是cas 默認不支持session同步。

因此能夠須要作session同步，能夠使用j2cache 實現session同步。

實現方法

1.準備jar包

將這些包copy 到cas的 WEB-INF/lib目錄下

2.編輯CAS web.xml 文件

在web.xml 的

<filter-mapping>
        <filter-name>encoding-filter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

後面添加

 <filter>
    <filter-name>j2cache-session-filter</filter-name>
    <filter-class>net.oschina.j2cache.session.J2CacheSessionFilter</filter-class>
    <init-param><!-- 內存中存放會話數 -->
        <param-name>session.maxSizeInMemory</param-name>
        <param-value>2000</param-value>
    </init-param>
    <init-param><!-- 會話有效期，單位：秒鐘 -->
        <param-name>session.maxAge</param-name>
        <param-value>1800</param-value>
    </init-param>
    <!-- cookie configuration -->
    <init-param>
        <param-name>cookie.name</param-name>
        <param-value>J2CACHE_SESSION_ID</param-value>
    </init-param>
    <init-param>
        <param-name>cookie.path</param-name>
        <param-value>/</param-value>
    </init-param>
    <init-param>
        <param-name>cookie.domain</param-name>
        <param-value></param-value>
    </init-param>
 
   
            <init-param>
                <param-name>redis.mode</param-name>
                <param-value>single</param-value>
            </init-param>
            <init-param>
                <param-name>redis.hosts</param-name>
                <param-value>192.168.31.100:6379</param-value>
            </init-param>
            <init-param>
                <param-name>redis.channel</param-name>
                <param-value>j2cache</param-value>
            </init-param>
            <init-param>
                <param-name>redis.cluster_name</param-name>
                <param-value>j2cache</param-value>
            </init-param>
            <init-param>
                <param-name>redis.timeout</param-name>
                <param-value>2000</param-value>
            </init-param>
            <init-param>
                <param-name>redis.password</param-name>
                <param-value></param-value>
            </init-param>
            <init-param>
                <param-name>redis.database</param-name>
                <param-value>0</param-value>
            </init-param>
            <init-param>
                <param-name>redis.maxTotal</param-name>
                <param-value>100</param-value>
            </init-param>
            <init-param>
                <param-name>redis.maxIdle</param-name>
                <param-value>10</param-value>
            </init-param>
            <init-param>
                <param-name>redis.minIdle</param-name>
                <param-value>10</param-value>
            </init-param>
        </filter>

        <filter-mapping>
            <filter-name>j2cache-session-filter</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>

redis 能夠作相應配置。

3.NGINX配置

upstream linuxidc {
            server 192.168.31.77:8082;
            server 192.168.31.77:8081;
        
        }

添加cas配置

location /cas {
                        proxy_pass http://linuxidc/cas;
                        proxy_set_header Host $host:$server_port;
            proxy_set_header X-Real-Ip $remote_addr;
            proxy_set_header X-Forwarded-For $remote_addr;
        }

這樣就實現了cas session同步。