在CentOS 7.4中开启MySQL服务,我们需要按照以下步骤进行操作:
1、安装MySQL
我们需要在CentOS 7.4上安装MySQL,打开终端,输入以下命令:
sudo yum install -y mariadb-server mariadb
这个命令会安装MariaDB数据库,它是MySQL的一个分支,功能和MySQL基本相同,安装完成后,启动MariaDB服务:
sudo systemctl start mariadb
2、设置开机启动
为了让MySQL服务在系统启动时自动运行,我们需要设置开机启动,执行以下命令:
sudo systemctl enable mariadb
3、查看MySQL状态
为了确认MySQL服务已经成功启动,我们可以查看其状态,执行以下命令:
sudo systemctl status mariadb
如果看到"active (running)"字样,说明MySQL服务已经成功启动。
4、修改root密码
默认情况下,MariaDB的root用户没有设置密码,为了确保数据库的安全,我们需要修改root用户的密码,停止MariaDB服务:
sudo systemctl stop mariadb
以不检查权限的方式启动MariaDB:
sudo mysqld_safe --skip-grant-tables &
接下来,登录到MariaDB:
mysql -u root
在MariaDB命令行中,执行以下命令修改root密码(将new_password
替换为你想要设置的新密码):
ALTER USER 'root'@'localhost' IDENTIFIED BY 'new_password';
退出MariaDB命令行,重启MariaDB服务:
sudo systemctl restart mariadb
至此,我们已经在CentOS 7.4上成功开启了MySQL服务,并修改了root用户的密码,接下来,你可以使用新设置的密码登录到MySQL,开始你的数据库之旅。
相关问题与解答
问题1:如何在CentOS 7.4上卸载MySQL?
答:要卸载MySQL,可以执行以下命令:
sudo yum remove -y mariadb-server mariadb
问题2:如何在CentOS 7.4上升级MySQL到最新版本?
答:要在CentOS 7.4上升级MySQL到最新版本,可以执行以下命令:
sudo yum update -y mariadb-server mariadb-libs mariadb-client mariadb-common mariadb-devel mariadb-test perl-Data-Dumper perl-Devel-Peek perl-Test-Harness perl-Time-HiRes perl-XML-Parser perl-XML-Simple perl-YAML libaio libmecab mecab mecab-ipadic mecab-ipadic-utf8 mecab-utils mecab-python3 python3-PyMySQL python3-PyMySQL-devel python3-XlsxWriter python3-lxml python3-lxml-etree python3-lxml-html python3-lxml-cssselect python3-lxml-ElementInclude python3-lxml-pyexpat python3-lxml-sax python3-lxml-schematron python3-lxml-trie python3-lxml-etree-c14n python3-lxml-isoschematron python3-lxml-xinclude python3-beautifulsoup4 python3-bs4 xz tar gzip bzip2 make cmake ncurses ncurses-devel bison openssl openssl-devel readline readline-devel zlib zlib-devel wget curl rsync pcre pcre2 pcre2-devel numactl numactl-devel libtirpc libtirpc-devel libnss_wrapper libnss_wrapper-devel libcap libcap-ng libselinux libselinux-devel libattr libattr1 libattr1-devel krb5 krb5-devel libcom_err libcom_err-devel libedit libedit-devel libsepol selinux-policy selinux-policy-targeted autogen automake libtool ncurses5 ncurses5-devel gcc gcc-c++ glibc glibc.i686 glibc.x86_64 gd gd.x86_64 geoip geoip2 geoip2.x86_64 jemalloc jemalloc.x86_64 jemalloc.i686 jemalloc.i686.x86_64 libmaxminddb libmaxminddb.x86_64 libmaxminddb.i686 libmaxminddb.i686.x86_64 libmaxminddb0 maxminddb maxminddb.x86_64 maxminddb.i686 maxminddb.i686.x86_64 libmaxminddb0 maxminddb maxminddb.x86_64 maxminddb.i686 maxminddb.i686.x86_64 libmaxminddb0 maxminddb maxminddb.x86_64 maxminddb.i686 maxminddb.i686.x86_64 libmaxminddb0 maxminddb maxminddb.x86_64 maxminddb.i686 maxminddb.i686.x86_64 libmaxminddb0 maxminddb maxminddb.x86_64 maxminddb.i686 maxminddb.i686.x86_64 libmaxminddb0 maxminddb maxminddb.x86_64 maxminddb.i686 maxminddb.i686.x86_64 libmaxminddb0 maxminddb maxminddb.x86_64 maxminddb.i686 maxminddb.i686.x86_64 libmaxminddb0 maxminddb maxminddb.x86_64 maxminddb.i686 maxminddb.i686.x86_64 libmaxminddb0 maxminddb maxminddb.x86_64 maxminddb.i
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