How to solve the problem that springboot cannot connect to redis

The first one

Check whether the firewall opens port 6379. Check the firewall status

systemctl status firewalld

If the firewall is not started. You can choose to look directly at the latter two methods.

Or just open the firewall, and then continue with the following steps:

Open the port

firewall-cmd --zone-public --add-port=6379/tcp --permanent

#显示
success

–permanent means permanent, it will be invalid after restarting without this parameter

Restart the firewall

firewall-cmd --reload

#显示
success

Check the open ports of the firewall

firewall-cmd --list-ports

Check whether there is port 6379

or directly

firewall-cmd --zone=public --query-port=6379/tcp

#显示
yes

The second type

Modify the connection timeout in spring.redis.timeout in the redis configuration of application.yml

  redis:
    database: 0             #redis 数据库索引（默认为0）
    host: 192.168.200.131   #redis 服务器地址
    port: 6379              #redis 服务器连接端口号
    password:               #redis 服务器连接密码  默认为空
    lettuce:
      pool:
        max-active: 8        # 连接池最大连接数(使用负值表示没有限制） 默认8
        max-wait: -1         #连接池最大阻塞等待时间（使用负值表示没有限制） 默认-1
        max-idle: 8          #连接池最大空闲连接 默认8
        min-idle: 0          #连接池最小空闲连接 默认 0
    timeout: 5000            # 超时时间

The third type

Modify the redis configuration file redis.conf

Find the configuration file when you installed redis.

Execute the command: vim/vi redis.conf

(1) Will bind 127.0.0.1 (reason: bind 127.0.0.1 takes effect, you can only access redis locally).

Or change it to: bind 0.0.0.0. All IPs are accessible. It is recommended to restore during deployment.

(2) Change protected-mode yes to: protected-mode no

Reason: protected- was added after redis3.2 version mode configuration, the default is yes, which is enabled. Set up the external network to connect to the redis service. The setting method is as follows:

1. Turn off the protected-mode mode. At this time, the external network can

be directly accessed

2. To enable protected-mode protection mode, you need to configure bind ip or set an access password

The above is the detailed content of How to solve the problem that springboot cannot connect to redis. For more information, please follow other related articles on the PHP Chinese website!