1、邮件服务器 使用[email protected]给[email protected]用户发一封邮件,内容为you jump,i jump.
两台虚拟机:rhel7、rhel8.2
两台虚拟机均需要做的操作:
(1)安装包、分别创建rose、jack用户:
[[email protected] ~]# yum install postfix -y
[[email protected] ~]# yum install dovecot -y
[[email protected] ~]# yum install cyrus-sasl* -y
(2)配置文件内容:
[[email protected] ~]# vim /etc/postfix/main.cf
myhostname = mail.qq(163).com
mydomain = qq(163).com
myorigin = $mydomain
inet_interfaces = all
mydestination = $myhostname, $mydomain
mynetworks = 192.168.38.0/24
relay_domains = $mydestination
开启SASL认证:
broken_sasl_auth_clients = yes
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination
[[email protected] ~]# vim /etc/dovecot/dovecot.conf
protocols = imap pop3 lmtp
login_trusted_networks = 192.168.38.0/24
[[email protected] ~]# vim /etc/dovecot/conf.d/10-mail.conf
mail_location = mbox:~/mail:INBOX=/var/mail/%u
(3)重启服务、关闭防火墙、设置权限
[[email protected] ~]# systemctl restart postfix
[[email protected] ~]# systemctl restart dovecot
[[email protected] ~]# systemctl restart saslauthd
[[email protected] ~]# systemctl stop firewalld
[[email protected] ~]# setenforce 0
[[email protected] ~]# chmod 0600 /var/mail/*
(4)配置DNS服务器(将192.168.38.129做为DNS服务器)
[[email protected] ~]# yum install bind -y
[[email protected] ~]# vim /etc/named.conf
[[email protected] ~]# vim /var/named/named.qq.com
[[email protected] ~]# vim /var/named/named.163.com
[[email protected] ~]# systemctl restart
修改两台虚拟机的DNS服务器的ip地址为自己搭建的DNS服务器地址
[[email protected] ~]# vim /etc/resolv.conf
测试结果:
2、请按下列要求创建一个新的逻辑卷: 创建一个名为 datastore 的卷组vg,卷组的PE尺寸为 16 MiB; 逻辑卷lv的名字为 database ,所属卷组为 datastore,该逻辑卷由 50 个 PE 组成; 将新建的逻辑卷格式化为 xfs 文件系统,要求系统启动时,该逻辑卷能被自动挂载到; /mnt/database 目录。
(1)创建一个名为 datastore 的卷组vg,卷组的PE尺寸为 16 MiB;
[[email protected] ~]# vgcreate -s 16M datastore /dev/sdb1 /dev/sdb5 /dev/sdc5
(2)逻辑卷lv的名字为 database ,所属卷组为 datastore,该逻辑卷由 50 个 PE 组成;
[[email protected] ~]# lvcreate -l 50 -n database datastore
(3)将新建的逻辑卷格式化为 xfs 文件系统,要求系统启动时,该逻辑卷能被自动挂载到; /mnt/database 目录。