79RHCSA-RHCE笔记

RHCSA..............................................................................................2要求............................................................................................2准备............................................................................................3逻辑卷的缩小..................................................................................7创建用户组....................................................................................8用户组..........................................................................................8crotab计划任务..............................................................................9升级内核.......................................................................................9ldap服务....................................................................................10同步NTP服务..............................................................................12web配置.....................................................................................13ftp服务......................................................................................14find查找.....................................................................................15字符串查找..................................................................................15用户组继承..................................................................................16swap分区...................................................................................16VG格式化...................................................................................17磁盘配额.....................................................................................18RHCE..............................................................................................22准备..........................................................................................22selinux.......................................................................................26IP转发.......................................................................................27禁用crontab................................................................................27ftp服务......................................................................................27mail的收发..................................................................................28mail的别名..................................................................................31黑色为主要的配置，粉色为可忽略的配置，蓝色为注释的内容RHCSA要求配置yum服务器,导入GPGKEY,网段172.24.20.*,rpm–import/etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-releaseDNS,gateway:172.24.20.254,虚机名:station.domain*.example.com,实体机:host.domain*.example.com172.24.20.250/24服务器:server1.domain*.example.com,实体机:ldap服务器:kernel虚机:硬盘8G,内存1G,swap:512/vda1/vda2/vda3/boot/vgvol-lv0/home/vgroup/4GSwap512M512-200M装机：分区自定义boot分区：500M物理卷：18G在物理卷里面建立卷组：lvm，vol0/root,14G/home,500Mswap,2GFormat软件自定义准备考试中，如果有人连接你的机器，kill1.[root@desktop74~]#watch-n.1w/last//查看是否有人来连接你的机器//[root@desktop74~]#psaux|grepsshd//查看连接你机器的用户的pid//[root@desktop74~]#kill-9pid2.[root@desktop74~]#ipaddshow//查看你的网络接口是否正常,如果/etc/sysconfig/network-scripts/ifcfg-eth0中的NM_CONTEOLLED=yes,而获取地址的方式是dhcp的话，那么你的网络是无法启动的3.当你启动网络服务的时候，机器显示找不到设备3.1eth0的MAC跳到eth1去了，把eth0的配置文件mv到eth1,把文件里面的MAC地址注释掉，把eth0，down；eth1，up重启服务，在服务还有问题的情况之下，start_udev3.2打开/etc/udev/rules.d/70-persistent-net.rules的配置文件，把eth1的配置注释，使用ifconfig查看eth的MAC，并将其复制到eth0的接口上面去；把eth1的接口down，eth0的接口up，重启服务，start_udev4.设置网络#vim/etc/sysconfig/network-scripts/ifcfg-eth0DEVICE=”eth0”BOOTPROTO=”none”DNS1=”172.24.254.254”GATEWAY=”172.24.254.254”HWADDR=”52:54:00:00:00:03”IPADDR=”172.24.100.3”NETMASK=”255.255.0.0”NM_CONTROLLED=”no”ONBOOT=”yes”#/etc/init.d/networkrestart#vim/etc/resolv.confsearchexample.comnameserver172.24.254.254#vim/etc/rc.local#echo-en“searchexample.com\nnameserver172.24.254.254”/etc/resolv.conf#dig-taxfrexample.com|grepserver74#vim/etc/sysconfig/networkNETWORKING=yesHOSTNAME=server74.example.com#/etc/init.d/networkrestart#hostnameserver74.example.com#hostnameserver74.example.com5repodata：rpm包生成的一个数据库的索引，解析包的依赖，并进行匹配。baseurl：是一个地址指向配置yum仓库：（仓库的名字里面不能出现空格）#vim/etc/yum.repos.d/server.repo#[server]#name=x86#baseurl==1#gpgcheck=1需要导公钥rpm—import/etc/pki/rpm-gpg/*不需要导公钥--nogpgcheck6.排错的顺序网络---防火墙---服务---