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centos7基于Kerberos认证的NFS服务器

作者:互联网

一、服务器配置192.168.1.10

服务器环境

cat /etc/redhat-release 
CentOS Linux release 7.8.2003 (Core)

步骤一: 安装需要的软件包

yum -y install nfs-utils krb5-server krb5-workstation

步骤二: 由于 Kerberos 只支持域名验证,所以必须将服务器和客户端的 IP 绑定到对应的域名上。在文件末尾添加以下内容

cat >>/etc/hosts<<EOF
192.168.1.10 server.flagnw.net
192.168.1.11 client.flagnw.net
EOF

步骤三: 修改 Kerberos 配置文件

cat >/etc/krb5.conf<<EOF
includedir /etc/krb5.conf.d/

[logging]
 default = FILE:/var/log/krb5libs.log
 kdc = FILE:/var/log/krb5kdc.log
 admin_server = FILE:/var/log/kadmind.log

[libdefaults]
 dns_lookup_realm = false
 ticket_lifetime = 24h
 renew_lifetime = 7d
 forwardable = true
 rdns = false
 pkinit_anchors = FILE:/etc/pki/tls/certs/ca-bundle.crt
 default_realm = FLAGNW.NET
 default_ccache_name = KEYRING:persistent:%{uid}

[realms]
 FLAGNW.NET = {
  kdc = server.flagnw.net
  admin_server = server.flagnw.net
 }

[domain_realm]
 .flagnw.net = FLAGNW.NET
 flagnw.net = FLAGNW.NET
EOF

步骤四: 配置 Kerberos 服务器管理访问控制参数

cat >/var/kerberos/krb5kdc/kadm5.acl<<EOF 
*/admin@FLAGNW.NET      *
EOF

步骤五: 配置 NFS 共享目录

1、nfs 共享目录
cat >/etc/exports<<EOF
/share *(rw,no_root_squash,no_all_squash,async,sec=krb5p)
EOF
2、修改nfs 默认支持协议
vim /etc/sysconfig/nfs
RPCNFSDARGS="-V 4.2"
3、重启nfs
systemctl restart nfs

步骤六: 初始化 KDC 数据库

kdb5_util create -s 
两次输入123

步骤七: 配置 KDC 数据库 & 取得秘钥

[root@localhost ~]# kadmin.local 									<==进入本地 admin 后台
kadmin.local:  addprinc root/admin						<==添加管理用户
kadmin.local:  addprinc -randkey nfs/server.flagnw.net	<==注册NFS服务器,并生成秘钥
kadmin.local:  addprinc -randkey nfs/client.flagnw.net	<==注册NFS客户端,并生成秘钥
kadmin.local:  ktadd nfs/server.flagnw.net							<==取NFS服务器秘钥
kadmin.local:  listprincs            <==列出注册服务        
K/M@FLAGNW.NET
kadmin/192-168-1-10@FLAGNW.NET
kadmin/admin@FLAGNW.NET
kadmin/changepw@FLAGNW.NET
kiprop/192-168-1-10@FLAGNW.NET
krbtgt/FLAGNW.NET@FLAGNW.NET
nfs/client.flagnw.net@FLAGNW.NET
nfs/client.flagnw.nets@FLAGNW.NET
nfs/server.flagnw.net@FLAGNW.NET
root/admin@FLAGNW.NET
或者
kadmin.local:  ktadd -k /tmp/server.keytab nfs/server.flagnw.net
[以下省略输出]
kadmin.local:  ktadd -k /tmp/client.keytab nfs/client.flagnw.net

步骤七:重启服务

[root@localhost ~]# systemctl start krb5kdc kadmin nfs nfs-secure
[root@localhost ~]# systemctl status krb5kdc kadmin nfs nfs-secure
[root@localhost ~]# systemctl enable krb5kdc kadmin nfs nfs-secure

二 、客户端配置192.168.1.11

步骤一: 配置 hosts,这里跟上面的 “步骤二” 一样

cat >>/etc/hosts<<EOF
192.168.1.10 server.flagnw.net
192.168.1.11 client.flagnw.net
EOF

步骤二: 配置 Kerberos 配置文件,

cat >/etc/krb5.conf<<EOF
includedir /etc/krb5.conf.d/

[logging]
 default = FILE:/var/log/krb5libs.log
 kdc = FILE:/var/log/krb5kdc.log
 admin_server = FILE:/var/log/kadmind.log

[libdefaults]
 dns_lookup_realm = false
 ticket_lifetime = 24h
 renew_lifetime = 7d
 forwardable = true
 rdns = false
 pkinit_anchors = FILE:/etc/pki/tls/certs/ca-bundle.crt
 default_realm = FLAGNW.NET
 default_ccache_name = KEYRING:persistent:%{uid}

[realms]
 FLAGNW.NET = {
  kdc = server.flagnw.net
  admin_server = server.flagnw.net
 }

[domain_realm]
 .flagnw.net = FLAGNW.NET
 flagnw.net = FLAGNW.NET
EOF

步骤三: 从 KDC 上去取得秘钥

[root@localhost ~]# kadmin -p root/admin 
Authenticating as principal root/admin@FLAGNW.NET with password.
Password for root/admin@FLAGNW.NET:    输入密码:123
kadmin:  
kadmin:  ktadd nfs/client.flagnw.net			<==获取NFS客户端秘钥
密钥保存在/etc/krb5.keytab这个文件中,请确保它的安全
或者
拷贝192.168.1.10 /tmp/client.keytab  到192.168.1.11 /tmp/client.keytab
cp  /tmp/client.keytab /etc/krb5.keytab

步骤四: 启动 NFS 加密服务,不要启动 NFS 服务器端程序,不然可能会挂载不上

[root@localhost ~]# systemctl start nfs-secure
[root@localhost ~]# systemctl status nfs-secure

步骤五:重新挂载/share

umount -f /share
mount -vvv -o sec=krb5p,vers=4.2 server.flagnw.net:/share /share

防火墙:88 udp/tcp 749 udp/tcp

标签:步骤,Kerberos,cat,centos7,nfs,kadmin,NFS,root,localhost
来源: https://www.cnblogs.com/dbstack/p/16481390.html