相关疑难解决方法(0)

我有一个在Debian服务器上运行的MySQL实例,我可以在本地连接到它,没有任何问题.但是,我无法远程连接到它.当我从命令行尝试这个时,我收到以下错误:

ERROR 2003 (HY000): Can't connect to MySQL server on '<server-ip>' (110)

我已将用户添加到mysql为'user'@'*'和'user'@'localhost'.此服务器中的skip-networking设置为false,并在my.cnf中注释掉绑定地址.我还尝试使用以下命令在iptables中打开端口3306:

/sbin/iptables -A INPUT -i eth0 -p tcp --destination-port 3306 -j ACCEPT

这是我所有iptable防火墙规则的列表,我使用iptables -L进行了检索:

Chain INPUT (policy DROP)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere            
REJECT     tcp  --  anywhere             anywhere            tcp dpt:auth reject-with icmp-port-unreachable 
ACCEPT     icmp --  anywhere             anywhere            icmp type 8 code 0 state NEW,RELATED,ESTABLISHED,UNTRACKED 
ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED 
ACCEPT     tcp  --  anywhere             anywhere            tcp spts:1024:65535 dpt:ftp state NEW 
ACCEPT     tcp …

我有以下部署了MySQL实例：

kind: Deployment
apiVersion: apps/v1beta1
metadata:
  name: mysql
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: mysql
    spec:
      containers:
      - name: mysql
        image: mysql:8
        ports:
        - containerPort: 3306
        env:
          - name: MYSQL_ROOT_PASSWORD
            valueFrom:
              secretKeyRef:
                name: mysql-root-password
                key: password

密码是root：

kind: Secret
apiVersion: v1
metadata:
  name: mysql-root-password
type: Opaque
data:
  password: cm9vdA==

问题是我按照此处的指示尝试在端口转发MySQL端口后连接到实例，但出现错误：

$ kubectl port-forward mysql-824284009-rpbpk 3306
Forwarding from 127.0.0.1:3306 -> 3306
Forwarding from [::1]:3306 -> 3306

# from another terminal
$ mysql -u root -p
Enter …