OpenLDAP+freeradius+samba+802.1x实现无线和有线网络认证+动态vlan下发——openLDAP篇(三)

简介: OpenLDAP+freeradius+samba+802.1x实现无线和有线网络认证+动态vlan下发——openLDAP篇

9.配置KeepAlived高可用


9.1.安装keepalived。


[root@ldap-master (18:51:24)~]# yum -y install keepalived[root@ldap-slave (18:51:25)~]# yum -y install keepalived


9.2.证书设置


由于我们要设置一个vip地址(250),为了让访问ldap的服务感知不到ldap的切换,我们要把访问ldap服务的程序中ldap的地址改为这个vip地址,所以在客户端申请证书时,就会出现问题(因为我们之前的证书是147和150的证书)。所以,我们需要把ldap的证书认证模式改为never模式,实现即使证书不能认证,还会使用https加密通信。但是为了让客户端使证书有效,我们需要使用vip地址(250)的证书。


9.2.1备份之前的证书


ldap-master:


[root@ldap-master (18:55:51)~]# cd /etc/openldap/certs/[root@ldap-master (19:04:21)/etc/openldap/certs]# [root@ldap-master (19:04:21)/etc/openldap/certs]# lscacert.pem  key3.db          openldapcert147.crt  password
cert8.db    openldap147.csr  openldapkey147.pem   secmod.db
[root@ldap-master (19:04:22)/etc/openldap/certs]# mkdir cert147[root@ldap-master (19:04:33)/etc/openldap/certs]# lscacert.pem  cert8.db  openldap147.csr      openldapkey147.pem  secmod.db
cert147     key3.db   openldapcert147.crt  password
[root@ldap-master (19:04:34)/etc/openldap/certs]# mv openldap* cert147/[root@ldap-master (19:05:13)/etc/openldap/certs]# lscacert.pem  cert147  cert8.db  key3.db  password  secmod.db


9.2.2重新生成新的证书


ldap-master


[root@ldap-master (19:05:14)/etc/openldap/certs]# (umask 077;openssl genrsa -out openldapkey250.pem 2048)Generating RSA private key, 2048 bit long modulus
....+++
....+++
e is 65537 (0x10001)
[root@ldap-master (19:09:49)/etc/openldap/certs]# openssl req -new -key openldapkey250.pem -out openldap250.csr -days 3650 -subj "/C=CN/ST=BeiJing/L=BeiJing/O=test.net.cn/OU=internet/CN=192.168.2.250"[root@ldap-master (19:10:08)/etc/openldap/certs]# scp openldap250.csr root@192.168.2.148:/rootroot@192.168.2.148's password: 
openldap250.csr                                               100% 1021   830.6KB/s   00:00


CA服务器


[root@CA (18:59:01)~]# cd /etc/pki/CA[root@CA (19:11:28)/etc/pki/CA]# openssl ca -in /root/openldap250.csr -out /etc/pki/CA/certs/openldapcert250.crt -days 3650Using configuration from /etc/pki/tls/openssl.cnf
Check that the request matches the signature
Signature ok
Certificate Details:
        Serial Number: 4 (0x4)
        Validity
            Not Before: Dec 14 11:11:52 2019 GMT
            Not After : Dec 11 11:11:52 2029 GMT
        Subject:
            countryName               = CN
            stateOrProvinceName       = BeiJing
            organizationName          = test.net.cn
            organizationalUnitName    = internet
            commonName                = 192.168.2.250
        X509v3 extensions:
            X509v3 Basic Constraints: 
                CA:FALSE
            Netscape Comment: 
                OpenSSL Generated Certificate
            X509v3 Subject Key Identifier: 
                1E:54:A8:73:58:01:6D:70:B4:15:A1:2B:00:D9:32:EC:F3:44:42:5B
            X509v3 Authority Key Identifier: 
                keyid:B5:68:D1:D2:61:0B:13:E1:4B:6D:C2:2A:AE:31:39:97:72:F5:80:B9
Certificate is to be certified until Dec 11 11:11:52 2029 GMT (3650 days)
Sign the certificate? [y/n]:y1 out of 1 certificate requests certified, commit? [y/n]y
Write out database with 1 new entries
Data Base Updated
[root@CA (19:11:56)/etc/pki/CA]# [root@CA (19:11:56)/etc/pki/CA]# scp certs/openldapcert250.crt root@192.168.2.147:/rootroot@192.168.2.147's password: 
openldapcert250.crt                                           100% 4528     2.6MB/s   00:00


ldap-master


[root@ldap-master (19:11:00)/etc/openldap/certs]# cp /root/openldapopenldapadmin.crt    openldapcert130.crt  openldapcert147.crt  openldapcert250.crt
[root@ldap-master (19:11:00)/etc/openldap/certs]# cp /root/openldapcert250.crt ./[root@ldap-master (19:14:11)/etc/openldap/certs]# lscacert.pem  cert8.db  openldap250.csr      openldapkey250.pem  secmod.db
cert147     key3.db   openldapcert250.crt  password
[root@ldap-master (19:14:16)/etc/openldap/certs]# chown -R ldap.ldap /etc/openldap/certs[root@ldap-master (19:14:35)/etc/openldap/certs]# chmod -R 0400 /etc/openldap/certs/openldap*[root@ldap-master (19:14:42)/etc/openldap/certs]#


生成证书后,重新编辑slapd.ldif,修改证书文件的名称


olcTLSCertificateFile: /etc/openldap/certs/openldapcert250.crt
olcTLSCertificateKeyFile: /etc/openldap/certs/openldapkey250.pem


重新生成配置文件


[root@ldap-master (19:24:30)/etc/openldap]# sh config_init.sh _#################### 100.00% eta   none elapsed            none fast!         Closing DB...


ldap-slave证书设置

直接使用slapd-master的证书就可以

传输之前先备份

先备份原来的证书

ldap-slave


[root@ldap-slave (18:56:14)~]# cd /etc/openldap/certs/[root@ldap-slave (19:07:20)/etc/openldap/certs]# lscacert.pem  key3.db          openldapcert150.crt  password
cert8.db    openldap150.csr  openldapkey150.pem   secmod.db
[root@ldap-slave (19:07:21)/etc/openldap/certs]# mkdir certs150[root@ldap-slave (19:07:31)/etc/openldap/certs]# mv openldap* certs150/[root@ldap-slave (19:07:39)/etc/openldap/certs]# lscacert.pem  cert8.db  certs150  key3.db  password  secmod.db
[root@ldap-slave (19:07:42)/etc/openldap/certs]#


ldap-master


[root@ldap-master (19:18:55)/etc/openldap/certs]# scp openldap* root@192.168.2.150:/etc/openldap/certs/root@192.168.2.150's password: 
openldap250.csr                                               100% 1021   925.5KB/s   00:00    
openldapcert250.crt                                           100% 4528     3.1MB/s   00:00    
openldapkey250.pem                                            100% 1675   736.4KB/s   00:00


ldap-slave

这时就可以使用ldap-master申请的证书了。


[root@ldap-slave (19:07:42)/etc/openldap/certs]# lscacert.pem  certs150  openldap250.csr      openldapkey250.pem  secmod.db
cert8.db    key3.db   openldapcert250.crt  password
[root@ldap-slave (19:21:28)/etc/openldap/certs]# chown -R ldap.ldap /etc/openldap/certs


然后同样需要修改一下slapd.ldif文件中证书的名称


[root@ldap-slave (19:21:54)/etc/openldap/certs]# grep 250 ../slapd.ldif olcTLSCertificateFile: /etc/openldap/certs/openldapcert250.crt
olcTLSCertificateKeyFile: /etc/openldap/certs/openldapkey250.pem


也需要重新生成配置文件


[root@ldap-slave (19:26:25)/etc/openldap]# sh config_init.sh _#################### 100.00% eta   none elapsed            none fast!         Closing DB...
[root@ldap-slave (19:26:27)/etc/openldap]#


测试证书


640.jpg


这时会显示证书有问题


640.png


测试ldap-slave。


640.png


此时两个ldap节点的证书都已经设置好了,接下来我们就需要设置keepalived了。


9.3设置keepalived。


ldap-master


备份原来的keepalived.conf,并生成新的keepalived.conf配置文件。


[root@ldap-master (20:03:30)/etc/keepalived]# mv keepalived.conf{,.bak}[root@ldap-master (20:08:47)/etc/keepalived]# cat keepalived.conf! Configuration File for keepalived
global_defs {
   notification_email {
     acassen@firewall.loc
     failover@firewall.loc
     sysadmin@firewall.loc
   }   #notification_email_from Alexandre.Cassen@firewall.loc
   #smtp_server 192.168.200.1
   #smtp_connect_timeout 30
   router_id ldapA
   vrrp_skip_check_adv_addr   #vrrp_strict
   vrrp_garp_interval 0
   vrrp_gna_interval 0}
vrrp_script check_ldap_server_status {
    script "/etc/keepalived/check-ldap-server.sh"
    interval 3
    weight -5}
vrrp_instance VI_1 {
    state MASTER
    interface eth0
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {        192.168.2.250
    }
    notify_master "/etc/keepalived/to_master.sh"
    notify_backup "/etc/keepalived/to_master.sh"
    notify_stop "/etc/keepalived/to_stop.sh"
    track_script {
        check_ldap_server_status
    }
}
里面的脚本
[root@ldap-master (20:13:02)/etc/keepalived]# cat check-ldap-server.sh #!/bin/bashldapPid=$(ps -ef |grep slapd|grep -v grep|awk '{print $2}' |grep -v PID)if [ "$ldapPid" == "" ]; then
   systemctl stop keepalived   echo "slapd stop"
   exit 1else
   exit 0fi[root@ldap-master (20:15:03)/etc/keepalived]# cat to_master.sh #!/bin/bashsystemctl start slapd
[root@ldap-master (20:15:10)/etc/keepalived]# cat to_stop.sh #!/bin/bashsystemctl stop slapd
[root@ldap-master (20:15:14)/etc/keepalived]# 添加可执行权限
[root@ldap-master (20:15:14)/etc/keepalived]# lscheck-ldap-server.sh  keepalived.conf  keepalived.conf.bak  to_master.sh  to_stop.sh
[root@ldap-master (20:16:05)/etc/keepalived]# chmod +x to_* check-ldap-server.sh [root@ldap-master (20:16:30)/etc/keepalived]# lltotal 20-rwxr-xr-x 1 root root  193 Dec 14 20:12 check-ldap-server.sh
-rw-r--r-- 1 root root  954 Dec 14 20:08 keepalived.conf
-rw-r--r-- 1 root root 3598 Aug 13 04:37 keepalived.conf.bak
-rwxr-xr-x 1 root root   34 Dec 14 20:12 to_master.sh
-rwxr-xr-x 1 root root   33 Dec 14 20:13 to_stop.sh
[root@ldap-master (20:16:31)/etc/keepalived]# 将脚本文件复制到ldap-slave中
[root@ldap-master (20:16:31)/etc/keepalived]# scp check-ldap-server.sh to_* root@192.168.2.150:/etc/keepalived/root@192.168.2.150's password: 
check-ldap-server.sh                                          100%  193   163.7KB/s   00:00    
to_master.sh                                                  100%   34    21.3KB/s   00:00    
to_stop.sh                                                    100%   33    24.4KB/s   00:00    
[root@ldap-master (20:17:31)/etc/keepalived]#


ldap-slave


[root@ldap-slave (20:10:40)/etc/keepalived]# cat keepalived.conf! Configuration File for keepalived
global_defs {
   notification_email {
     acassen@firewall.loc
     failover@firewall.loc
     sysadmin@firewall.loc
   }   #notification_email_from Alexandre.Cassen@firewall.loc
   #smtp_server 192.168.200.1
   #smtp_connect_timeout 30
   router_id ldapB
   vrrp_skip_check_adv_addr   #vrrp_strict
   vrrp_garp_interval 0
   vrrp_gna_interval 0}
vrrp_script check_ldap_server_status {
    script "/etc/keepalived/check-ldap-server.sh"
    interval 3
    weight -5}
vrrp_instance VI_1 {
    state BACKUP
    interface eth0
    virtual_router_id 51
    priority 98
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {        192.168.2.250
    }
    notify_master "/etc/keepalived/to_master.sh"
    notify_backup "/etc/keepalived/to_master.sh"
    notify_stop "/etc/keepalived/to_stop.sh"
    track_script {
        check_ldap_server_status
    }
}
[root@ldap-slave (20:18:47)/etc/keepalived]# lscheck-ldap-server.sh  keepalived.conf  keepalived.conf.bak  to_master.sh  to_stop.sh
[root@ldap-slave (20:18:49)/etc/keepalived]#


启动keepalived


[root@ldap-master (20:18:41)/etc/keepalived]# systemctl start keepalived[root@ldap-master (20:20:53)/etc/keepalived]# ip a1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:e8:05:aa brd ff:ff:ff:ff:ff:ff
    inet 192.168.2.147/24 brd 192.168.2.255 scope global dynamic eth0
       valid_lft 1610sec preferred_lft 1610sec
    inet 192.168.2.250/32 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fee8:5aa/64 scope link 
       valid_lft forever preferred_lft forever


设置为开机自启动。


[root@ldap-master (20:20:56)/etc/keepalived]# systemctl enable keepalivedCreated symlink from /etc/systemd/system/multi-user.target.wants/keepalived.service to /usr/lib/systemd/system/keepalived.service.
[root@ldap-slave (20:46:03)/etc/keepalived]# systemctl enable keepalivedCreated symlink from /etc/systemd/system/multi-user.target.wants/keepalived.service to /usr/lib/systemd/system/keepalived.service.


ldap-slave


[root@ldap-slave (20:18:49)/etc/keepalived]# systemctl start keepalived[root@ldap-slave (20:25:14)/etc/keepalived]# ip a1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:77:ca:56 brd ff:ff:ff:ff:ff:ff
    inet 192.168.2.150/24 brd 192.168.2.255 scope global dynamic eth0
       valid_lft 1462sec preferred_lft 1462sec
    inet6 fe80::20c:29ff:fe77:ca56/64 scope link 
       valid_lft forever preferred_lft forever


测试

ldap-master主机停止slapd服务,可以看见250地址消失了。


[root@ldap-master (20:21:31)/etc/keepalived]# systemctl stop slapd[root@ldap-master (20:25:55)/etc/keepalived]# ip a1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:e8:05:aa brd ff:ff:ff:ff:ff:ff
    inet 192.168.2.147/24 brd 192.168.2.255 scope global dynamic eth0
       valid_lft 1308sec preferred_lft 1308sec
    inet6 fe80::20c:29ff:fee8:5aa/64 scope link 
       valid_lft forever preferred_lft forever
[root@ldap-master (20:25:58)/etc/keepalived]# 此时keepalived已经自己停止了
[root@ldap-master (20:25:58)/etc/keepalived]# systemctl status keepalived● keepalived.service - LVS and VRRP High Availability Monitor
   Loaded: loaded (/usr/lib/systemd/system/keepalived.service; enabled; vendor preset: disabled)
   Active: inactive (dead) since Sat 2019-12-14 20:25:57 CST; 3min 5s ago
 Main PID: 8342 (code=exited, status=0/SUCCESS)
   CGroup: /system.slice/keepalived.service
Dec 14 20:21:00 ldap-master.test.net.cn Keepalived_vrrp[8344]: VRRP_Instance(VI_1) Sending...
Dec 14 20:21:00 ldap-master.test.net.cn Keepalived_vrrp[8344]: Sending gratuitous ARP on e...
Dec 14 20:21:00 ldap-master.test.net.cn Keepalived_vrrp[8344]: Sending gratuitous ARP on e...
Dec 14 20:21:00 ldap-master.test.net.cn Keepalived_vrrp[8344]: Sending gratuitous ARP on e...
Dec 14 20:21:00 ldap-master.test.net.cn Keepalived_vrrp[8344]: Sending gratuitous ARP on e...
Dec 14 20:25:56 ldap-master.test.net.cn Keepalived[8342]: Stopping
Dec 14 20:25:56 ldap-master.test.net.cn systemd[1]: Stopping LVS and VRRP High Availabil.....
Dec 14 20:25:56 ldap-master.test.net.cn Keepalived_vrrp[8344]: VRRP_Instance(VI_1) sent 0 ...
Dec 14 20:25:56 ldap-master.test.net.cn Keepalived_vrrp[8344]: VRRP_Instance(VI_1) removin...
Dec 14 20:25:57 ldap-master.test.net.cn systemd[1]: Stopped LVS and VRRP High Availabili...r.
Hint: Some lines were ellipsized, use -l to show in full.
[root@ldap-master (20:29:03)/etc/keepalived]#


同时查看ldap-slave主机

可以发现250地址漂移到ldap-slave主机上了。


[root@ldap-slave (20:26:01)/etc/keepalived]# ip a1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:77:ca:56 brd ff:ff:ff:ff:ff:ff
    inet 192.168.2.150/24 brd 192.168.2.255 scope global dynamic eth0
       valid_lft 1341sec preferred_lft 1341sec
    inet 192.168.2.250/32 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fe77:ca56/64 scope link 
       valid_lft forever preferred_lft forever


恢复主节点的keepalived


[root@ldap-master (20:29:03)/etc/keepalived]# systemctl start slapd[root@ldap-master (20:30:55)/etc/keepalived]# systemctl start keepalived[root@ldap-master (20:31:03)/etc/keepalived]# systemctl status keepalived● keepalived.service - LVS and VRRP High Availability Monitor
   Loaded: loaded (/usr/lib/systemd/system/keepalived.service; enabled; vendor preset: disabled)
   Active: active (running) since Sat 2019-12-14 20:31:03 CST; 21s ago
  Process: 9341 ExecStart=/usr/sbin/keepalived $KEEPALIVED_OPTIONS (code=exited, status=0/SUCCESS)
 Main PID: 9342 (keepalived)
   CGroup: /system.slice/keepalived.service
           ├─9342 /usr/sbin/keepalived -D
           ├─9343 /usr/sbin/keepalived -D
           └─9344 /usr/sbin/keepalived -D
Dec 14 20:31:04 ldap-master.test.net.cn Keepalived_vrrp[9344]: Sending gratuitous ARP on e...
Dec 14 20:31:04 ldap-master.test.net.cn Keepalived_vrrp[9344]: Sending gratuitous ARP on e...
Dec 14 20:31:04 ldap-master.test.net.cn Keepalived_vrrp[9344]: Sending gratuitous ARP on e...
Dec 14 20:31:04 ldap-master.test.net.cn Keepalived_vrrp[9344]: Opening script file /etc/ke...
Dec 14 20:31:09 ldap-master.test.net.cn Keepalived_vrrp[9344]: Sending gratuitous ARP on e...
Dec 14 20:31:09 ldap-master.test.net.cn Keepalived_vrrp[9344]: VRRP_Instance(VI_1) Sending...
Dec 14 20:31:09 ldap-master.test.net.cn Keepalived_vrrp[9344]: Sending gratuitous ARP on e...
Dec 14 20:31:09 ldap-master.test.net.cn Keepalived_vrrp[9344]: Sending gratuitous ARP on e...
Dec 14 20:31:09 ldap-master.test.net.cn Keepalived_vrrp[9344]: Sending gratuitous ARP on e...
Dec 14 20:31:09 ldap-master.test.net.cn Keepalived_vrrp[9344]: Sending gratuitous ARP on e...
Hint: Some lines were ellipsized, use -l to show in full.
可以看见250地址漂移回来了
[root@ldap-master (20:31:24)/etc/keepalived]# ip a1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:e8:05:aa brd ff:ff:ff:ff:ff:ff
    inet 192.168.2.147/24 brd 192.168.2.255 scope global dynamic eth0
       valid_lft 1662sec preferred_lft 1662sec
    inet 192.168.2.250/32 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fee8:5aa/64 scope link 
       valid_lft forever preferred_lft forever
ldap-slave节点上的250地址也消失了
[root@ldap-slave (20:27:42)/etc/keepalived]# ip a1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:77:ca:56 brd ff:ff:ff:ff:ff:ff
    inet 192.168.2.150/24 brd 192.168.2.255 scope global dynamic eth0
       valid_lft 1748sec preferred_lft 1748sec
    inet6 fe80::20c:29ff:fe77:ca56/64 scope link 
       valid_lft forever preferred_lft forever


使用客户端测试


640.png


连接测试


连接250时并没有弹出证书提醒。


640.png


注意

如果节点出现问题,先启动slapd服务,再启动keepalived服务。


六.创建openLDAP的组织架构。


根据每个公司的组织架构去创建对应的openldap组织架构;


这里我们使用测试的组织架构


640.png

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