由于不是时常关心几日前才发现PHP7.4已经出到7.4.1了，但是苦于当时身边没有密钥无法升级。
今天终于可以接触到密钥连接上SSH了，可是却发现yum update不能如同使用7.3.x时一样更新各种小版本了。此刻我都怀疑是不是我之前安装到PHP7.4的姿势不正确时找到了解决办法。
说来惭愧由于对Linux的知识仅限于皮毛，在此之前都以为只要把.repo文件对应的目录就可以了，因为在安装MariaDB时都是这样添加就可以且安装新的PHP版本也只要指定对应版本。可是没想到在这是想更新下小版本时却老是不能更新了。
根据这次的问题我都怀疑之前PHP 7.4.0RC4一直不能yum update的原因可能和本次是一样的。在这次不能更新时我又又怀疑了remi源，不过这次立刻就去源的网站看到了在当日就同步更新了，遂怀疑是vestaCP的问题。。。。。。（最好才发现是自己的问题。。。。。。）
本来准备放弃的了，但是功夫不负有心人无意间在remi的页面找到了解决办法
（如果提示yum-config-manager: command not found需要通过安装yum -y install yum-utils）
yum-config-manager --enable remi-php74 yum update
yum-config-manager --enable remi-php74：
Loaded plugins: fastestmirror =============================== repo: remi-php74 =============================== [remi-php74] async = True bandwidth = 0 base_persistdir = /var/lib/yum/repos/x86_64/7 baseurl = cache = 0 cachedir = /var/cache/yum/x86_64/7/remi-php74 check_config_file_age = True compare_providers_priority = 80 cost = 1000 deltarpm_metadata_percentage = 100 deltarpm_percentage = enabled = 1 enablegroups = True exclude = failovermethod = priority ftp_disable_epsv = False gpgcadir = /var/lib/yum/repos/x86_64/7/remi-php74/gpgcadir gpgcakey = gpgcheck = True gpgdir = /var/lib/yum/repos/x86_64/7/remi-php74/gpgdir gpgkey = file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi hdrdir = /var/cache/yum/x86_64/7/remi-php74/headers http_caching = all includepkgs = ip_resolve = keepalive = True keepcache = False mddownloadpolicy = sqlite mdpolicy = group:small mediaid = metadata_expire = 21600 metadata_expire_filter = read-only:present metalink = minrate = 0 mirrorlist = http://cdn.remirepo.net/enterprise/7/php74/mirror mirrorlist_expire = 86400 name = Remi's PHP 7.4 RPM repository for Enterprise Linux 7 - x86_64 old_base_cache_dir = password = persistdir = /var/lib/yum/repos/x86_64/7/remi-php74 pkgdir = /var/cache/yum/x86_64/7/remi-php74/packages proxy = False proxy_dict = proxy_password = proxy_username = repo_gpgcheck = False retries = 10 skip_if_unavailable = False ssl_check_cert_permissions = True sslcacert = sslclientcert = sslclientkey = sslverify = True throttle = 0 timeout = 30.0 ui_id = remi-php74 ui_repoid_vars = releasever, basearch username =
然后再yum update终于看到了希望的PHP7.4.1。
通过此次操作，我又学习到了一个命令，于是我通过yum repolist查看列表并且使用yum-config-manager --disable “仓库名"将旧的PHP版本的仓库给禁用就不需要像以前一样删除文件还导致yum update时报一些错误了。
在没有启用前可以看到remi-php74没有在列表里面，启用后可以发现出现了相关仓库了。
启用前：
repo id repo name status base/7/x86_64 CentOS-7 10,097 epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_6 13,509 extras/7/x86_64 CentOS-7 307 mariadb MariaDB 94 nginx/x86_64 nginx repo 170 remi Remi's RPM repository for Enterprise Linux 7 5,991 remi-debuginfo/x86_64 Remi's RPM repository for Enterprise Linux 7 2,766 remi-php55 Remi's PHP 5.5 RPM repository for Enterprise 435 remi-php55-debuginfo/x86_64 Remi's PHP 5.5 RPM repository for Enterprise 310 remi-php56 Remi's PHP 5.6 RPM repository for Enterprise 440 remi-php56-debuginfo/x86_64 Remi's PHP 5.6 RPM repository for Enterprise 313 remi-safe Safe Remi's RPM repository for Enterprise Lin 3,669 remi-test Remi's test RPM repository for Enterprise Lin 1,450 remi-test-debuginfo/x86_64 Remi's test RPM repository for Enterprise Lin 647 updates/7/x86_64 CentOS-7 1,012 vesta/x86_64 Vesta - cmmnt 32 repolist: 41,242
启用后：
repo id repo name status base/7/x86_64 CentOS-7 10,097 epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 13,509 extras/7/x86_64 CentOS-7 307 mariadb MariaDB 94 nginx/x86_64 nginx repo 170 remi Remi's RPM repository for Enterprise Linux 7 - 5,991 remi-debuginfo/x86_64 Remi's RPM repository for Enterprise Linux 7 - 2,766 remi-php74 Remi's PHP 7.4 RPM repository for Enterprise L 300 remi-safe Safe Remi's RPM repository for Enterprise Linu 3,669 remi-test Remi's test RPM repository for Enterprise Linu 1,450 remi-test-debuginfo/x86_64 Remi's test RPM repository for Enterprise Linu 647 updates/7/x86_64 CentOS-7 1,012 vesta/x86_64 Vesta - cmmnt 32 repolist: 40,044
现在我在由于要不要启用remi-php74-debuginfo/x86_64（虽然我目前不知道有没有这个仓库的说）
参考：
PHP version 7.2.26, 7.3.13 and 7.4.1 ：
https://blog.remirepo.net/post/2019/12/18/PHP-version-7.2.26-7.3.13-and-7.4.1
yum仓库详细解读：
https://www.cnblogs.com/aubin/p/7289207.html
ChiuYut
2020年1月16日