本篇文章给大家谈谈centos搭建服务器，以及centosntp服务器搭建对应的知识点，希望对各位有所帮助，不要忘了收藏本站喔。
本文目录一览：
二、Centos7-FTP服务器的搭建
ftpname为你为该ftp创建的用户名，/data/KodServer/data/User/tomas/home 为登录进去后的位置
（备注：用cat etc/passwd可以查看当前系统用户）
①、查看ftp的状态：sestatus -b | grep ftp
②、在结果中可以看到： tftp_home_dir off
③、将状态改为on：setsebool -P tftp_home_dir on
④、重启vsftp服务：systemctl restart vsftpd.service
问题：Failed to restart vsftpd.service: Unit not found.
把ftp用户写进去，如果没有这个文件的话就可以复制当前目录下user_list那个文件，然后清空添加用户名即可。
然后就可以使用ftp工具从外部访问了
Centos 搭建dhcp服务器
dhcp是动态主机配置协议，使用udp协议，主要使用udp67和udp 68号端口
1.client端会发送dhcp discover广播包
2.dhcp服务器会回应dhcp offer广播包
3.client端会发送dhcp request广播包
4.dhcp服务器发送dhcp ack广播包
[root@mini ~]# rpm -qa dhcp
[root@mini ~]# cat /etc/centos-release
CentOS release 6.9 (Final)
[root@mini ~]# uname -r
2.6.32-696.el6.i686
[root@mini ~]# uname -m
i686
[root@mini ~]# yum install -y dhcp
[root@mini ~]# rpm -qa dhcp
dhcp-4.1.1-53.P1.el6.centos.1.i686
[root@mini ~]# rpm -qc dhcp
/etc/dhcp/dhcpd.conf
/etc/dhcp/dhcpd6.conf
/etc/openldap/schema/dhcp.schema
/etc/portreserve/dhcpd
/etc/sysconfig/dhcpd
/etc/sysconfig/dhcpd6
/etc/sysconfig/dhcrelay
/etc/sysconfig/dhcrelay6
/var/lib/dhcpd/dhcpd.leases
/var/lib/dhcpd/dhcpd6.leases
[root@mini ~]# cat /etc/dhcp/dhcpd.conf
#
# DHCP Server Configuration file.
# see /usr/share/doc/dhcp*/dhcpd.conf.sample
# see 'man 5 dhcpd.conf'
#
查询dhcp sample文件(dhcpd.conf.sample文件为dhcp配置文件模板)
# rpm -ql dhcp
配置完成后的文件
[root@mini ~]# cat /etc/dhcp/dhcpd.conf
#
# DHCP Server Configuration file.
# see /usr/share/doc/dhcp*/dhcpd.conf.sample
# see 'man 5 dhcpd.conf'
#
# A slightly different configuration for an internal subnet.
subnet 172.16.1.0 netmask 255.255.255.0 {
range 172.16.1.10 172.16.1.30;
option domain-name-servers mini.localdomain;
option domain-name "mini.localdomain";
option routers 172.16.1.1;
option broadcast-address 172.16.1.1;
default-lease-time 600;
max-lease-time 7200;
}
查看配置是否正确
[root@mini ~]# /etc/init.d/dhcpd configtest
Syntax: OK
DHCP启动失败，并查询到如下报错信息(/var/log/messages)
Nov 6 06:37:24 mini dhcpd: No subnet declaration for eth0 (192.168.28.139).
Nov 6 06:37:24 mini dhcpd: ** Ignoring requests on eth0. If this is not what
Nov 6 06:37:24 mini dhcpd: you want, please write a subnet declaration
Nov 6 06:37:24 mini dhcpd: in your dhcpd.conf file for the network segment
Nov 6 06:37:24 mini dhcpd: to which interface eth0 is attached. **
Nov 6 06:37:24 mini dhcpd:
Nov 6 06:37:24 mini dhcpd:
Nov 6 06:37:24 mini dhcpd: Not configured to listen on any interfaces!
Nov 6 06:37:24 mini dhcpd:
Nov 6 06:37:24 mini dhcpd: This version of ISC DHCP is based on the release available
Nov 6 06:37:24 mini dhcpd: on . Features have been added and other changes
Nov 6 06:37:24 mini dhcpd: have been made to the base software release in order to make
Nov 6 06:37:24 mini dhcpd: it work better with this distribution.
Nov 6 06:37:24 mini dhcpd:
Nov 6 06:37:24 mini dhcpd: Please report for this software via the CentOS Bugs Database:
Nov 6 06:37:24 mini dhcpd:
Nov 6 06:37:24 mini dhcpd:
Nov 6 06:37:24 mini dhcpd: exiting.
解决办法:
这是因为DHCP程序发现没有“Not configured to listen on any interfaces”，只需要配置相应的IP到目标网卡中便可以解决这个问题。
[root@mini ~]# ifconfig eth1 172.16.1.1/24
[root@mini ~]# /etc/init.d/dhcpd start
Nov 6 06:43:11 mini dhcpd: Internet Systems Consortium DHCP Server 4.1.1-P1
Nov 6 06:43:11 mini dhcpd: Copyright 2004-2010 Internet Systems Consortium.
Nov 6 06:43:11 mini dhcpd: All rights reserved.
Nov 6 06:43:11 mini dhcpd: For info, please visit
Nov 6 06:43:11 mini dhcpd: Not searching LDAP since ldap-server, ldap-port and ldap-base-dn were not specified in the config file
Nov 6 06:43:11 mini dhcpd: Wrote 0 leases to leases file.
Nov 6 06:43:11 mini dhcpd: Listening on LPF/eth1/00:0c:29:c5:2b:7e/172.16.1.0/24
Nov 6 06:43:11 mini dhcpd: Sending on LPF/eth1/00:0c:29:c5:2b:7e/172.16.1.0/24
Nov 6 06:43:11 mini dhcpd:
Nov 6 06:43:11 mini dhcpd: No subnet declaration for eth0 (192.168.28.139).
Nov 6 06:43:11 mini dhcpd: ** Ignoring requests on eth0. If this is not what
Nov 6 06:43:11 mini dhcpd: you want, please write a subnet declaration
Nov 6 06:43:11 mini dhcpd: in your dhcpd.conf file for the network segment
Nov 6 06:43:11 mini dhcpd: to which interface eth0 is attached. **
Nov 6 06:43:11 mini dhcpd:
Nov 6 06:43:11 mini dhcpd: Sending on Socket/fallback/fallback-net
[root@mini ~]# cat /var/lib/dhcpd/dhcpd.leases
注意：如果Linux开启了防火墙，那么需要对UDP 67和UDP 68放行。或者直接将放火墙关闭
CentOS7文件服务器的搭建
安装
yum -y install vsftpd
安装后修改配置
vi /etc/vsftpd/vsftpd.conf
不允许匿名操作
开启用户管理列表
在文件最后面新增allow_writeable_chroot=YES，允许已登录用户进行上传
编辑用户管理列表
vi /etc/vsftpd/chroot_list
添加ftpuser用户
mkdir -p /home/ftp
创建ftp的根路径
useradd -d /home/ftptest -s /sbin/nologin ftpuser
新增用户并配置为ftpuser用户的主文件夹
usermod -aG ftp ftpuser
将ftpuser用户放置在ftp用户组中
chown ftpuser /home/ftp
修改ftp文件的所属
passwd ftpuser
修改ftpuser用户密码
vi /etc/selinux/config
如图配置
firewall-cmd --permanent --zone=public --add-service=ftp
开启ftp服务
firewall-cmd --reload
重加载firewall
systemctl start vsftpd
重启
systemctl status vsftpd
查看firewall状态
输入ftpuser的账号密码
文件服务器ftp文件夹根目录
Centos7搭建DNS服务器
Centos7搭建DNS服务器 ，位Web服务器提供域名解析
1.关闭防火墙
systemctl stop firewalld
2.配置IP地址 启动网络服务
vim /etc/sysconfig/network-scripts/ifcfg-ens33
systemctl start network
ifconfig
3.挂载系统镜像
mount /dev/cdrom /mnt/
4.编辑yum环境
rm -rf /etc/yum.repos.d/*
vim /etc/yum.repos.d/yum.repo
5.使用yum安装bind软件包
yum -y install bind
5.1 查看是否将bind软件包安装成功
rpm -qa bind
5.2 编辑dns配置文件
vim /etc/named.conf
named-checkconf /etc/named.conf
vim /var/named/huizhong.com.zone
named-checkzone huizhong.com /var/named/huizhong.com.zone
vim /var/named/huizhong.com.zone
named-checkzone huizhong.com /var/named/huizhong.com.zone
6.启动dns服务
systemctl start named
6.1查看dns运行状态
systemctl status named
6.3 查看dns网络连接情况
netstat -anpt | grep named
netstat -anpu | grep named
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