第六周

第六周

1、自建yum仓库，分别为网络源和本地源

[root@repo-server ~]# cat /etc/yum.repos.d/baseOS.repo
[base]
name=BaseOS
baseurl=file:///misc/cd/BaseOS
        https://mirrors.aliyun.com/centos/8/BaseOS/x86_64/os/
gpgcheck=0
[AppStream]
name=AppStream
baseurl=file:///misc/cd/AppStream
        https://mirrors.aliyun.com/centos/8/AppStream/x86_64/os/
gpgcheck=0
[root@repo-server ~]# 

2、编译安装http2.4，实现可以正常访问，并将编译步骤和结果提交。

• 从官网下载软件包到本地目录/usr/local/src

wget -P /usr/local/src https://ftp.wayne.edu/apache//httpd/httpd-2.4.46

• 由于是最小化安装，编译是缺少必要的包，需要安装

  dnf -y install apr-devel apr-util-devel
  yum -y install pcre-devel
  dnf install -y  openssl-devel

• 选择安装目录在/apps/httpd,配置文件目录/etc/httpd,启用ssl.(查看configure的选项，可以运行 ./configure --help)

./configure --prefix=/apps/httpd --sysconfdir=/etc/httpd --enable-ssl

配置成功后显示

configure: summary of build options:
Server Version: 2.4.46
Install prefix: /apps/httpd
C compiler:     gcc
CFLAGS:           -pthread  
CPPFLAGS:        -DLINUX -D_REENTRANT -D_GNU_SOURCE  
LDFLAGS:           
LIBS:             
C preprocessor: gcc -E

[root@centos8 httpd-2.4.46] \$echo \$?
0
[root@centos8 httpd-2.4.46]$ 

• 开始编译，-j选择是选择多个线程

 make -j 4 && make install

有报错gcc: error: /usr/lib/rpm/redhat/redhat-hardened-ld: No such file or directory

//查询缺少的文件属于哪个包文件
[root@centos8 httpd-2.4.46]$yum provides /usr/lib/rpm/redhat/redhat-hardened-ld
Last metadata expiration check: 0:25:46 ago on Sun 03 Jan 2021 10:06:35 AM CST.
redhat-rpm-config-120-1.el8.noarch : CentOS specific rpm configuration files
Repo        : MyAppStream
Matched from:
Filename    : /usr/lib/rpm/redhat/redhat-hardened-ld
//安装缺少的包
[root@centos8 httpd-2.4.46]$yum -y install redhat-rpm-config-120-1.el8.noarch
//继续安装
 [root@centos8 httpd-2.4.46]make -j 4 && make install

• 根据INSTALL文件提示，要运行PREFIX/bin/apachectl start，安装完成。

   $ ./configure --prefix=PREFIX
       $ make
       $ make install
       $ PREFIX/bin/apachectl start
  
[root@centos8 bin]$./apachectl start
[root@centos8 bin]$ss -ntl
  State      Recv-Q       Send-Q              Local Address:Port             Peer Address:Port      
  LISTEN     0            128                       0.0.0.0:22                    0.0.0.0:*         
  LISTEN     0            128                             *:80                          *:*         
  LISTEN     0            128                          [::]:22                       [::]:*         
  [root@centos8 bin]$curl http://localhost
It works!

3、利用sed 取出ifconfig命令中本机的IPv4地址

[root@centos8 data]$ifconfig eth0 |sed -En '2s/(^ *inet )([0-9.]*)( .*$)/\2/p'
10.0.0.8

4、删除/etc/fstab文件中所有以#开头，后面至少跟一个空白字符的行的行首的#和空白字符

[root@centos8 data]$cat /etc/fstab|sed -E 's/(^# )(.*)/\2/'

#
/etc/fstab
Created by anaconda on Tue Oct 27 17:54:45 2020
#
Accessible filesystems, by reference, are maintained under '/dev/disk/'.
See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info.
#
After editing this file, run 'systemctl daemon-reload' to update systemd
units generated from this file.
#
UUID=c970ffb7-8e3a-4b64-8014-c21e125be6d5 /                       xfs     defaults        0 0
UUID=81f38a9b-5532-4606-9147-44ab13b72f13 /boot                   ext4    defaults        1 2
UUID=b2c38bd9-642f-4660-8115-d50f51450d3a /data                   xfs     defaults        0 0
UUID=498e6700-939f-4a48-8f6a-6f7708c7a902 swap                    swap    defaults        0 0

5、处理/etc/fstab路径,使用sed命令取出其目录名和基名

root@centos8 data]$echo '/etc/fstab'|sed -E 's@(^/.*/)([^/]+/?)@\2@'
fstab
[root@centos8 data]$echo '/etc/fstab'|sed -E 's@(^/.*/)([^/]+/?)@\1@'
/etc/