环境：
在客户端能够发现iscsi服务端的设备后，使用'iscsiadm -m node -T iqn.2022-06.com.test.web:server1 -p 10.165.141.155 -l' 进行登录的时候报错。iscsi服务器设备是国产设备。
1、报错日志
```html/xml
[root@server ~]# iscsiadm -m node -T iqn.2021-05.com.example.storage1 -p 172.25.254.129 -l
Logging in to [iface: default, target: iqn.2021-05.com.example.storage1, portal: 172.25.254.129,3260] (multiple)
iscsiadm: Could not login to [iface: default, target: iqn.2021-05.com.example.storage1, portal: 172.25.254.129.3260].
iscsiadm: initiator reported error (24 - iSCSI login failed due to authorization failure)
iscsiadm: Could not log into all portals
## 2、客户端排错思路操作：
a.确保防火墙关闭或者放行
```html/xml
#确保关闭防火墙和selinux
systemctl stop firewalld
getenforce #显示为disabled（就是selinux关闭了）
#防火墙或者也可以方行
firewall-cmd --add-port=3260/tcp --permanent
firewall-cmd --add-service=iscsi-target --permanent
firewall-cmd --reload b.检查密钥等配置是否正确
```html/xml
cat /etc/iscsi/initiatorname.iscsi
c.重启iscsid服务，然后再次尝试发现和登录(确保你的CHAP配置文件是正确的)
```html/xml
systemctl restart iscsid
#注意：这边以单项CHAP认证为例
#vi /etc/iscsi/iscsid.conf 这是配置文件，修改配置文件后一定要重启isicsid下图是/etc/iscsi/iscsid.conf 的配置截图
3、补充：客户端配置文件如何进行双向ACP认证
```html/xml
*****
CHAP Settings
*****
To enable CHAP authentication set node.session.auth.authmethod
to CHAP. The default is None.
node.session.auth.authmethod = CHAP
To set a CHAP username and password for initiator
authentication by the target(s), uncomment the following lines:
node.session.auth.username = 存储系统配置CHAP双向认证选择“目标器认证启动器”时设置的用户名
node.session.auth.password = 存储系统配置CHAP双向认证选择“目标器认证启动器”时设置的密码
To set a CHAP username and password for target(s)
authentication by the initiator, uncomment the following lines:
node.session.auth.username_in = 存储系统配置CHAP双向认证选择“启动器认证目标器”时设置的用户名
node.session.auth.password_in = 存储系统配置CHAP双向认证选择“启动器认证目标器”时设置的密码
To enable CHAP authentication for a discovery session to the target
set discovery.sendtargets.auth.authmethod to CHAP. The default is None.
discovery.sendtargets.auth.authmethod = CHAP
To set a discovery session CHAP username and password for the initiator
authentication by the target(s), uncomment the following lines:
discovery.sendtargets.auth.username = 存储系统配置CHAP双向认证选择“目标器认证启动器”时设置的用户名
discovery.sendtargets.auth.password = 存储系统配置CHAP双向认证选择“目标器认证启动器”时设置的密码
To set a discovery session CHAP username and password for target(s)
authentication by the initiator, uncomment the following lines:
discovery.sendtargets.auth.username_in = 存储系统配置CHAP双向认证选择“启动器认证目标器”时设置的用户名
discovery.sendtargets.auth.password_in = 存储系统配置CHAP双向认证选择“启动器认证目标器”时设置的密码