首先下载Httpd-2.4.54.tar.gz数据包：
#cd /usr/local/src
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#wget https://downloads.apache.org/httpd/httpd-2.4.54.tar.gz
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解压缩数据包：
#tar xf httpd-2.4.54.tar.gz
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设置编译环境和选项：
#cd httpd-2.4.54
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#./configure
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注意：这里使用的是缺省目录项配置。如果对Linux不熟悉，请尽量使用缺省配置。
开始编译和安装：
#make
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#make install
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查看最终安装结果：
# find / -name "httpd*"
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/usr/local/apache2/conf/original/extra/httpd-manual.conf
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/usr/sbin/httpd
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/usr/lib/systemd/system/httpd.service
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/etc/httpd/conf/httpd.conf
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/var/log/httpd
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设置Httpd开机启动：
#vi /usr/lib/systemd/system/httpd.service
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[Unit]
Description=The Apache HTTP Server
After=network.target remote-fs.target nss-lookup.target
Documentation=man:httpd(8)
Documentation=man:apachectl(8)
[Service]
Type=notify
EnvironmentFile=/etc/sysconfig/httpd
ExecStart=/usr/sbin/httpd $OPTIONS -DFOREGROUND
ExecReload=/usr/sbin/httpd $OPTIONS -k graceful
ExecStop=/bin/kill -WINCH ${MAINPID}
# We want systemd to give httpd some time to finish gracefully, but still want
# it to kill httpd after TimeoutStopSec if something went wrong during the
# graceful stop. Normally, Systemd sends SIGTERM signal right after the
# ExecStop, which would kill httpd. We are sending useless SIGCONT here to give
# httpd time to finish.
KillSignal=SIGCONT
PrivateTmp=true
[Install]
WantedBy=multi-user.target
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#systemctl daemon reload
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#systemctl start httpd
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检查版本号：
#httpd -v
Server version: Apache/2.4.6 (CentOS)
Server built: Jan 27 2023 17:36:29
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至此，Httpd升级完成。
