CentOS7安装MariaDB的流程步骤 - 成就云开发者社区

安装前需要彻底清除你的服务器计算机上原来安装过的mysql、maraidb的文件，不然会出现各种问题。 CentOS7安装MariaDB的流程步骤如下：

执行安装命令: yum -y install mariadb*

注意事项（这一步不是必须的，出现时可以这样尝试着解决） *mariadb 错误 [Errno 5] [Errno 12] Cannot allocate memory *一般云服务器内存很低，可以设置一下

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	vi /etc/my.cnf
	[mysqld]
	innodb_buffer_pool_size=50M

开机自动启动MariaDB：systemctl enable mariadb

启动MariaDB：systemctl start mariadb

查看MariaDB状态：systemctl status mariadb

初次安装数据库，进行数据库配置：

mysql_secure_installation
提示： – 第一次操作直接回车 – 第二次Set root password?[Y/n] 输入Y – New password: 输入你的密码 – 确认密码
Success!

登录数据库：mysql -uroot -p

设置字符集（建议设置为：UTF-8）：

vim /etc/my.cnf

[mysqld]后面追加以下内容

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	init_connect='SET collation_connection = utf8_unicode_ci'
	init_connect='SET NAMES utf8'
	character-set-server=utf8
	collation-server=utf8_unicode_ci
	skip-character-set-client-handshake

修改文件：vim /etc/my.cnf.d/client.cnf

[client] 后面追加以下内容

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	default-character-set=utf8

修改文件：vim /etc/my.cnf.d/mysql-clients.cnf

[mysql] 后面追加以下内容

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	default-character-set=utf8

接着重启服务生效：systemctl restart mariadb

MYSQL客户端进入，查看字符集：

登录进入：
- show variables like "%character%";
- show variables like "%collation%";

如果要开放远程登录，得开放防火墙，允许3306访问：

firewall-cmd --permanent --zone=public --add-port=3306/tcp
firewall-cmd --reload

MYSQL客户端进入修改权限，允许远程登录：

【选择使用mysql数据库】use mysql;
select user,host from user;
【修改权限】update user set host='%' where host='localhost';
select user,host from user;
【刷新使得权限生效】flush privileges;

测试：在其他计算机远程登录

mysql -h域名 -uroot -p

good luck!

你可能遇到的错误：

CentOS 7 MariaDB Error “Failed to start mariadb.service: Unit not found.” [closed]
错误 [Errno 5] [Errno 12] Cannot allocate memory

解决办法都是：请检查你的计算机是否有残留的mysql或者mariadb版本的文件（特别是一些云服务器初始化时可能自带的相关版本）

以下是整个安装流程，供参考：

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[app]# yum -y install mariadb* Loaded plugins: fastestmirror Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast base | 3.6 kB 00:00:00 epel | 5.3 kB 00:00:00 extras | 2.9 kB 00:00:00 updates | 2.9 kB 00:00:00 (1/7): epel/x86_64/group_gz | 95 kB 00:00:00 (2/7): base/7/x86_64/group_gz | 165 kB 00:00:00 (3/7): epel/x86_64/updateinfo | 1.0 MB 00:00:00 (4/7): extras/7/x86_64/primary_db | 164 kB 00:00:00 (5/7): epel/x86_64/primary_db | 6.7 MB 00:00:00 (6/7): updates/7/x86_64/primary_db | 6.7 MB 00:00:00 (7/7): base/7/x86_64/primary_db | 6.0 MB 00:00:00 Determining fastest mirrors Resolving Dependencies --> Running transaction check ---> Package mariadb.x86_64 1:5.5.64-1.el7 will be installed ---> Package mariadb-bench.x86_64 1:5.5.64-1.el7 will be installed --> Processing Dependency: perl(GD) for package: 1:mariadb-bench-5.5.64-1.el7.x86_64 --> Processing Dependency: perl(Data::Dumper) for package: 1:mariadb-bench-5.5.64-1.el7.x86_64 --> Processing Dependency: perl(DBI) for package: 1:mariadb-bench-5.5.64-1.el7.x86_64 ---> Package mariadb-devel.x86_64 1:5.5.64-1.el7 will be installed ---> Package mariadb-embedded.x86_64 1:5.5.64-1.el7 will be installed --> Processing Dependency: libaio.so.1(LIBAIO_0.4)(64bit) for package: 1:mariadb-embedded-5.5.64-1.el7.x86_64 --> Processing Dependency: libaio.so.1(LIBAIO_0.1)(64bit) for package: 1:mariadb-embedded-5.5.64-1.el7.x86_64 --> Processing Dependency: libaio.so.1()(64bit) for package: 1:mariadb-embedded-5.5.64-1.el7.x86_64 ---> Package mariadb-embedded-devel.x86_64 1:5.5.64-1.el7 will be installed ---> Package mariadb-libs.x86_64 1:5.5.52-1.el7 will be updated ---> Package mariadb-libs.x86_64 1:5.5.64-1.el7 will be an update ---> Package mariadb-server.x86_64 1:5.5.64-1.el7 will be installed --> Processing Dependency: perl-DBD-MySQL for package: 1:mariadb-server-5.5.64-1.el7.x86_64 ---> Package mariadb-test.x86_64 1:5.5.64-1.el7 will be installed --> Processing Dependency: perl(Test::More) for package: 1:mariadb-test-5.5.64-1.el7.x86_64 --> Processing Dependency: perl(Env) for package: 1:mariadb-test-5.5.64-1.el7.x86_64 --> Running transaction check ---> Package libaio.x86_64 0:0.3.109-13.el7 will be installed ---> Package perl-DBD-MySQL.x86_64 0:4.023-6.el7 will be installed ---> Package perl-DBI.x86_64 0:1.627-4.el7 will be installed --> Processing Dependency: perl(RPC::PlServer) >= 0.2001 for package: perl-DBI-1.627-4.el7.x86_64 --> Processing Dependency: perl(RPC::PlClient) >= 0.2000 for package: perl-DBI-1.627-4.el7.x86_64 ---> Package perl-Data-Dumper.x86_64 0:2.145-3.el7 will be installed ---> Package perl-Env.noarch 0:1.04-2.el7 will be installed ---> Package perl-GD.x86_64 0:2.49-3.el7 will be installed --> Processing Dependency: gd >= 2.0.28 for package: perl-GD-2.49-3.el7.x86_64 --> Processing Dependency: libpng15.so.15()(64bit) for package: perl-GD-2.49-3.el7.x86_64 --> Processing Dependency: libjpeg.so.62()(64bit) for package: perl-GD-2.49-3.el7.x86_64 --> Processing Dependency: libgd.so.2()(64bit) for package: perl-GD-2.49-3.el7.x86_64 --> Processing Dependency: libfontconfig.so.1()(64bit) for package: perl-GD-2.49-3.el7.x86_64 --> Processing Dependency: libXpm.so.4()(64bit) for package: perl-GD-2.49-3.el7.x86_64 --> Processing Dependency: libX11.so.6()(64bit) for package: perl-GD-2.49-3.el7.x86_64 ---> Package perl-Test-Simple.noarch 0:0.98-243.el7 will be installed --> Processing Dependency: perl(Test::Harness) >= 2.03 for package: perl-Test-Simple-0.98-243.el7.noarch --> Running transaction check ---> Package fontconfig.x86_64 0:2.13.0-4.3.el7 will be installed --> Processing Dependency: freetype >= 2.8-7 for package: fontconfig-2.13.0-4.3.el7.x86_64 --> Processing Dependency: fontpackages-filesystem for package: fontconfig-2.13.0-4.3.el7.x86_64 --> Processing Dependency: dejavu-sans-fonts for package: fontconfig-2.13.0-4.3.el7.x86_64 ---> Package gd.x86_64 0:2.0.35-26.el7 will be installed ---> Package libX11.x86_64 0:1.6.7-2.el7 will be installed --> Processing Dependency: libX11-common >= 1.6.7-2.el7 for package: libX11-1.6.7-2.el7.x86_64 --> Processing Dependency: libxcb.so.1()(64bit) for package: libX11-1.6.7-2.el7.x86_64 ---> Package libXpm.x86_64 0:3.5.12-1.el7 will be installed ---> Package libjpeg-turbo.x86_64 0:1.2.90-8.el7 will be installed ---> Package libpng.x86_64 2:1.5.13-7.el7_2 will be installed ---> Package perl-PlRPC.noarch 0:0.2020-14.el7 will be installed --> Processing Dependency: perl(Net::Daemon) >= 0.13 for package: perl-PlRPC-0.2020-14.el7.noarch --> Processing Dependency: perl(Net::Daemon::Test) for package: perl-PlRPC-0.2020-14.el7.noarch --> Processing Dependency: perl(Net::Daemon::Log) for package: perl-PlRPC-0.2020-14.el7.noarch --> Processing Dependency: perl(Compress::Zlib) for package: perl-PlRPC-0.2020-14.el7.noarch ---> Package perl-Test-Harness.noarch 0:3.28-3.el7 will be installed --> Running transaction check ---> Package dejavu-sans-fonts.noarch 0:2.33-6.el7 will be installed --> Processing Dependency: dejavu-fonts-common = 2.33-6.el7 for package: dejavu-sans-fonts-2.33-6.el7.noarch ---> Package fontpackages-filesystem.noarch 0:1.44-8.el7 will be installed ---> Package freetype.x86_64 0:2.4.11-12.el7 will be updated ---> Package freetype.x86_64 0:2.8-14.el7 will be an update ---> Package libX11-common.noarch 0:1.6.7-2.el7 will be installed ---> Package libxcb.x86_64 0:1.13-1.el7 will be installed --> Processing Dependency: libXau.so.6()(64bit) for package: libxcb-1.13-1.el7.x86_64 ---> Package perl-IO-Compress.noarch 0:2.061-2.el7 will be installed --> Processing Dependency: perl(Compress::Raw::Zlib) >= 2.061 for package: perl-IO-Compress-2.061-2.el7.noarch --> Processing Dependency: perl(Compress::Raw::Bzip2) >= 2.061 for package: perl-IO-Compress-2.061-2.el7.noarch ---> Package perl-Net-Daemon.noarch 0:0.48-5.el7 will be installed --> Running transaction check ---> Package dejavu-fonts-common.noarch 0:2.33-6.el7 will be installed ---> Package libXau.x86_64 0:1.0.8-2.1.el7 will be installed ---> Package perl-Compress-Raw-Bzip2.x86_64 0:2.061-3.el7 will be installed ---> Package perl-Compress-Raw-Zlib.x86_64 1:2.061-4.el7 will be installed --> Finished Dependency Resolution Dependencies Resolved ======================================================================================================================== Package Arch Version Repository Size Installing: mariadb x86_64 mariadb-bench x86_64 mariadb-devel x86_64 mariadb-embedded x86_64 mariadb-embedded-devel x86_64 mariadb-server x86_64 mariadb-test x86_64 Updating: mariadb-libs x86_64 Installing for dependencies: dejavu-fonts-common noarch dejavu-sans-fonts noarch fontconfig x86_64 fontpackages-filesystem noarch gd x86_64 libX11 x86_64 libX11-common noarch libXau x86_64 libXpm x86_64 libaio x86_64 libjpeg-turbo x86_64 libpng x86_64 libxcb x86_64 perl-Compress-Raw-Bzip2 x86_64 perl-Compress-Raw-Zlib x86_64 perl-DBD-MySQL x86_64 perl-DBI x86_64 perl-Data-Dumper x86_64 perl-Env noarch perl-GD x86_64 perl-IO-Compress noarch perl-Net-Daemon noarch perl-PlRPC noarch perl-Test-Harness noarch perl-Test-Simple noarch Updating for dependencies: freetype x86_64 1:5.5.64-1.el7 base 8.7 M 1:5.5.64-1.el7 base 388 k 1:5.5.64-1.el7 base 755 k 1:5.5.64-1.el7 base 3.6 M 1:5.5.64-1.el7 base 7.4 M 1:5.5.64-1.el7 base 11 M 1:5.5.64-1.el7 base 8.1 M 1:5.5.64-1.el7 base 759 k 2.33-6.el7 base 64 k 2.33-6.el7 base 1.4 M 2.13.0-4.3.el7 base 254 k 1.44-8.el7 base 9.9 k 2.0.35-26.el7 base 146 k 1.6.7-2.el7 base 607 k 1.6.7-2.el7 base 164 k 1.0.8-2.1.el7 base 29 k 3.5.12-1.el7 base 55 k 0.3.109-13.el7 base 24 k 1.2.90-8.el7 base 135 k 2:1.5.13-7.el7_2 base 213 k 1.13-1.el7 base 214 k 2.061-3.el7 base 32 k 1:2.061-4.el7 base 57 k 4.023-6.el7 base 140 k 1.627-4.el7 base 802 k 2.145-3.el7 base 47 k 1.04-2.el7 base 16 k 2.49-3.el7 base 173 k 2.061-2.el7 base 260 k 0.48-5.el7 base 51 k 0.2020-14.el7 base 36 k 3.28-3.el7 base 302 k 0.98-243.el7 base 170 k 2.8-14.el7 base 380 k Transaction Summary Install 7 Packages (+25 Dependent packages) Upgrade 1 Package (+ 1 Dependent package) Total download size: 47 M Downloading packages: Delta RPMs disabled because /usr/bin/applydeltarpm not installed. (1/34): dejavu-fonts-common-2.33-6.el7.noarch.rpm | 64 kB 00:00:00 (2/34): fontconfig-2.13.0-4.3.el7.x86_64.rpm | 254 kB 00:00:00 (3/34): fontpackages-filesystem-1.44-8.el7.noarch.rpm | 9.9 kB 00:00:00 (4/34): freetype-2.8-14.el7.x86_64.rpm | 380 kB 00:00:00 (5/34): gd-2.0.35-26.el7.x86_64.rpm | 146 kB 00:00:00 (6/34): dejavu-sans-fonts-2.33-6.el7.noarch.rpm | 1.4 MB 00:00:00 (7/34): libX11-common-1.6.7-2.el7.noarch.rpm | 164 kB 00:00:00 (8/34): libX11-1.6.7-2.el7.x86_64.rpm | 607 kB 00:00:00 (9/34): libXau-1.0.8-2.1.el7.x86_64.rpm | 29 kB 00:00:00 (10/34): libXpm-3.5.12-1.el7.x86_64.rpm | 55 kB 00:00:00 (11/34): libaio-0.3.109-13.el7.x86_64.rpm | 24 kB 00:00:00 (12/34): libjpeg-turbo-1.2.90-8.el7.x86_64.rpm | 135 kB 00:00:00 (13/34): libpng-1.5.13-7.el7_2.x86_64.rpm | 213 kB 00:00:00 (14/34): libxcb-1.13-1.el7.x86_64.rpm | 214 kB 00:00:00 (15/34): mariadb-bench-5.5.64-1.el7.x86_64.rpm | 388 kB 00:00:00 (16/34): mariadb-devel-5.5.64-1.el7.x86_64.rpm | 755 kB 00:00:00 (17/34): mariadb-5.5.64-1.el7.x86_64.rpm | 8.7 MB 00:00:00 (18/34): mariadb-embedded-5.5.64-1.el7.x86_64.rpm | 3.6 MB 00:00:00 (19/34): mariadb-libs-5.5.64-1.el7.x86_64.rpm | 759 kB 00:00:00 (20/34): mariadb-server-5.5.64-1.el7.x86_64.rpm | 11 MB 00:00:00 (21/34): mariadb-test-5.5.64-1.el7.x86_64.rpm | 8.1 MB 00:00:00 (22/34): perl-Compress-Raw-Bzip2-2.061-3.el7.x86_64.rpm | 32 kB 00:00:00 (23/34): perl-Compress-Raw-Zlib-2.061-4.el7.x86_64.rpm | 57 kB 00:00:00 (24/34): perl-DBD-MySQL-4.023-6.el7.x86_64.rpm | 140 kB 00:00:00 (25/34): perl-DBI-1.627-4.el7.x86_64.rpm | 802 kB 00:00:00 (26/34): perl-Data-Dumper-2.145-3.el7.x86_64.rpm | 47 kB 00:00:00 (27/34): perl-Env-1.04-2.el7.noarch.rpm | 16 kB 00:00:00 (28/34): perl-GD-2.49-3.el7.x86_64.rpm | 173 kB 00:00:00 (29/34): perl-IO-Compress-2.061-2.el7.noarch.rpm | 260 kB 00:00:00 (30/34): perl-Net-Daemon-0.48-5.el7.noarch.rpm | 51 kB 00:00:00 (31/34): perl-PlRPC-0.2020-14.el7.noarch.rpm | 36 kB 00:00:00 (32/34): perl-Test-Harness-3.28-3.el7.noarch.rpm | 302 kB 00:00:00 (33/34): perl-Test-Simple-0.98-243.el7.noarch.rpm | 170 kB 00:00:00 (34/34): mariadb-embedded-devel-5.5.64-1.el7.x86_64.rpm | 7.4 MB 00:00:00 Total 35 MB/s | 47 MB 00:00:01 Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : perl-Data-Dumper-2.145-3.el7.x86_64 1/36 Updating : 1:mariadb-libs-5.5.64-1.el7.x86_64 2/36 Installing : 1:mariadb-5.5.64-1.el7.x86_64 3/36 Installing : libaio-0.3.109-13.el7.x86_64 4/36 Installing : 2:libpng-1.5.13-7.el7_2.x86_64 5/36 Updating : freetype-2.8-14.el7.x86_64 6/36 Installing : libjpeg-turbo-1.2.90-8.el7.x86_64 7/36 Installing : fontpackages-filesystem-1.44-8.el7.noarch 8/36 Installing : dejavu-fonts-common-2.33-6.el7.noarch 9/36 Installing : dejavu-sans-fonts-2.33-6.el7.noarch 10/36 Installing : fontconfig-2.13.0-4.3.el7.x86_64 11/36 Installing : 1:mariadb-embedded-5.5.64-1.el7.x86_64 12/36 Installing : 1:mariadb-devel-5.5.64-1.el7.x86_64 13/36 Installing : 1:perl-Compress-Raw-Zlib-2.061-4.el7.x86_64 14/36 Installing : libXau-1.0.8-2.1.el7.x86_64 15/36 Installing : libxcb-1.13-1.el7.x86_64 16/36 Installing : perl-Net-Daemon-0.48-5.el7.noarch 17/36 Installing : libX11-common-1.6.7-2.el7.noarch 18/36 Installing : libX11-1.6.7-2.el7.x86_64 19/36 Installing : libXpm-3.5.12-1.el7.x86_64 20/36 Installing : gd-2.0.35-26.el7.x86_64 21/36 Installing : perl-GD-2.49-3.el7.x86_64 22/36 Installing : perl-Test-Harness-3.28-3.el7.noarch 23/36 Installing : perl-Test-Simple-0.98-243.el7.noarch 24/36 Installing : perl-Env-1.04-2.el7.noarch 25/36 Installing : perl-Compress-Raw-Bzip2-2.061-3.el7.x86_64 26/36 Installing : perl-IO-Compress-2.061-2.el7.noarch 27/36 Installing : perl-PlRPC-0.2020-14.el7.noarch 28/36 Installing : perl-DBI-1.627-4.el7.x86_64 29/36 Installing : perl-DBD-MySQL-4.023-6.el7.x86_64 30/36 Installing : 1:mariadb-server-5.5.64-1.el7.x86_64 31/36 Installing : 1:mariadb-test-5.5.64-1.el7.x86_64 32/36 Installing : 1:mariadb-bench-5.5.64-1.el7.x86_64 33/36 Installing : 1:mariadb-embedded-devel-5.5.64-1.el7.x86_64 34/36 Cleanup : freetype-2.4.11-12.el7.x86_64 35/36 Cleanup : 1:mariadb-libs-5.5.52-1.el7.x86_64 36/36 Verifying : 1:mariadb-libs-5.5.64-1.el7.x86_64 1/36 Verifying : fontconfig-2.13.0-4.3.el7.x86_64 2/36 Verifying : perl-IO-Compress-2.061-2.el7.noarch 3/36 Verifying : 2:libpng-1.5.13-7.el7_2.x86_64 4/36 Verifying : freetype-2.8-14.el7.x86_64 5/36 Verifying : perl-Compress-Raw-Bzip2-2.061-3.el7.x86_64 6/36 Verifying : fontpackages-filesystem-1.44-8.el7.noarch 7/36 Verifying : perl-Env-1.04-2.el7.noarch 8/36 Verifying : 1:mariadb-embedded-5.5.64-1.el7.x86_64 9/36 Verifying : perl-GD-2.49-3.el7.x86_64 10/36 Verifying : 1:mariadb-devel-5.5.64-1.el7.x86_64 11/36 Verifying : perl-Test-Harness-3.28-3.el7.noarch 12/36 Verifying : 1:mariadb-5.5.64-1.el7.x86_64 13/36 Verifying : dejavu-fonts-common-2.33-6.el7.noarch 14/36 Verifying : libX11-1.6.7-2.el7.x86_64 15/36 Verifying : 1:mariadb-test-5.5.64-1.el7.x86_64 16/36 Verifying : libxcb-1.13-1.el7.x86_64 17/36 Verifying : perl-DBI-1.627-4.el7.x86_64 18/36 Verifying : libaio-0.3.109-13.el7.x86_64 19/36 Verifying : libX11-common-1.6.7-2.el7.noarch 20/36 Verifying : libXpm-3.5.12-1.el7.x86_64 21/36 Verifying : libjpeg-turbo-1.2.90-8.el7.x86_64 22/36 Verifying : perl-Data-Dumper-2.145-3.el7.x86_64 23/36 Verifying : 1:mariadb-bench-5.5.64-1.el7.x86_64 24/36 Verifying : dejavu-sans-fonts-2.33-6.el7.noarch 25/36 Verifying : perl-Test-Simple-0.98-243.el7.noarch 26/36 Verifying : gd-2.0.35-26.el7.x86_64 27/36 Verifying : perl-Net-Daemon-0.48-5.el7.noarch 28/36 Verifying : perl-PlRPC-0.2020-14.el7.noarch 29/36 Verifying : libXau-1.0.8-2.1.el7.x86_64 30/36 Verifying : 1:mariadb-embedded-devel-5.5.64-1.el7.x86_64 31/36 Verifying : perl-DBD-MySQL-4.023-6.el7.x86_64 32/36 Verifying : 1:mariadb-server-5.5.64-1.el7.x86_64 33/36 Verifying : 1:perl-Compress-Raw-Zlib-2.061-4.el7.x86_64 34/36 Verifying : 1:mariadb-libs-5.5.52-1.el7.x86_64 35/36 Verifying : freetype-2.4.11-12.el7.x86_64 36/36 Installed: mariadb.x86_64 1:5.5.64-1.el7 mariadb-bench.x86_64 1:5.5.64-1.el7 mariadb-devel.x86_64 1:5.5.64-1.el7 mariadb-embedded.x86_64 1:5.5.64-1.el7 mariadb-embedded-devel.x86_64 1:5.5.64-1.el7 mariadb-server.x86_64 1:5.5.64-1.el7 mariadb-test.x86_64 1:5.5.64-1.el7 Dependency Installed: dejavu-fonts-common.noarch 0:2.33-6.el7 dejavu-sans-fonts.noarch 0:2.33-6.el7 fontconfig.x86_64 0:2.13.0-4.3.el7 fontpackages-filesystem.noarch 0:1.44-8.el7 gd.x86_64 0:2.0.35-26.el7 libX11.x86_64 0:1.6.7-2.el7 libX11-common.noarch 0:1.6.7-2.el7 libXau.x86_64 0:1.0.8-2.1.el7 libXpm.x86_64 0:3.5.12-1.el7 libaio.x86_64 0:0.3.109-13.el7 libjpeg-turbo.x86_64 0:1.2.90-8.el7 libpng.x86_64 2:1.5.13-7.el7_2 libxcb.x86_64 0:1.13-1.el7 perl-Compress-Raw-Bzip2.x86_64 0:2.061-3.el7 perl-Compress-Raw-Zlib.x86_64 1:2.061-4.el7 perl-DBD-MySQL.x86_64 0:4.023-6.el7 perl-DBI.x86_64 0:1.627-4.el7 perl-Data-Dumper.x86_64 0:2.145-3.el7 perl-Env.noarch 0:1.04-2.el7 perl-GD.x86_64 0:2.49-3.el7 perl-IO-Compress.noarch 0:2.061-2.el7 perl-Net-Daemon.noarch 0:0.48-5.el7 perl-PlRPC.noarch 0:0.2020-14.el7 perl-Test-Harness.noarch 0:3.28-3.el7 perl-Test-Simple.noarch 0:0.98-243.el7 Updated: mariadb-libs.x86_64 1:5.5.64-1.el7 Dependency Updated: freetype.x86_64 0:2.8-14.el7 Complete! [ app]# systemctl enable mariadb Created symlink from /etc/systemd/system/multi-user.target.wants/mariadb.service to /usr/lib/systemd/system/mariadb.service. [ app]# systemctl start mariadb [ app]# systemctl status mariadb ● mariadb.service - MariaDB database server Loaded: loaded (/usr/lib/systemd/system/mariadb.service; enabled; vendor preset: disabled) Active: active (running) since Sun 2020-03-15 19:23:48 CST; 8s ago Process: 4279 ExecStartPost=/usr/libexec/mariadb-wait-ready $MAINPID (code=exited, status=0/SUCCESS) Process: 4192 ExecStartPre=/usr/libexec/mariadb-prepare-db-dir %n (code=exited, status=0/SUCCESS) Main PID: 4278 (mysqld_safe) CGroup: /system.slice/mariadb.service ├─4278 /bin/sh /usr/bin/mysqld_safe --basedir=/usr └─4442 /usr/libexec/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --... Mar 15 19:23:46 iZwz9edz6cpxxf0o19aqisZ mariadb-prepare-db-dir[4192]: MySQL manual for more instructions. Mar 15 19:23:46 iZwz9edz6cpxxf0o19aqisZ mariadb-prepare-db-dir[4192]: Please report any problems at http://mariadb....ra Mar 15 19:23:46 iZwz9edz6cpxxf0o19aqisZ mariadb-prepare-db-dir[4192]: The latest information about MariaDB is avail.../. Mar 15 19:23:46 iZwz9edz6cpxxf0o19aqisZ mariadb-prepare-db-dir[4192]: You can find additional information about the...t: Mar 15 19:23:46 iZwz9edz6cpxxf0o19aqisZ mariadb-prepare-db-dir[4192]: http://dev.mysql.com Mar 15 19:23:46 iZwz9edz6cpxxf0o19aqisZ mariadb-prepare-db-dir[4192]: Consider joining MariaDB's strong and vibrant...y: Mar 15 19:23:46 iZwz9edz6cpxxf0o19aqisZ mariadb-prepare-db-dir[4192]: https://mariadb.org/get-involved/ Mar 15 19:23:46 iZwz9edz6cpxxf0o19aqisZ mysqld_safe[4278]: 200315 19:23:46 mysqld_safe Logging to '/var/log/maria...og'. Mar 15 19:23:46 iZwz9edz6cpxxf0o19aqisZ mysqld_safe[4278]: 200315 19:23:46 mysqld_safe Starting mysqld daemon wit...ysql Mar 15 19:23:48 iZwz9edz6cpxxf0o19aqisZ systemd[1]: Started MariaDB database server. Hint: Some lines were ellipsized, use -l to show in full. [root@iZwz9edz6cpxxf0o19aqisZ app]# mysql_secure_installation NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY! In order to log into MariaDB to secure it, we'll need the current password for the root user. If you've just installed MariaDB, and you haven't set the root password yet, the password will be blank, so you should just press enter here. Enter current password for root (enter for none): ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES) Enter current password for root (enter for none): ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES) Enter current password for root (enter for none): OK, successfully used password, moving on... Setting the root password ensures that nobody can log into the MariaDB root user without the proper authorisation. Set root password? [Y/n] Y New password: Re-enter new password: Password updated successfully! Reloading privilege tables.. ... Success! By default, a MariaDB installation has an anonymous user, allowing anyone to log into MariaDB without having to have a user account created for them. This is intended only for testing, and to make the installation go a bit smoother. You should remove them before moving into a production environment. Remove anonymous users? [Y/n] n ... skipping. Normally, root should only be allowed to connect from 'localhost'. This ensures that someone cannot guess at the root password from the network. Disallow root login remotely? [Y/n] n ... skipping. By default, MariaDB comes with a database named 'test' that anyone can access. This is also intended only for testing, and should be removed before moving into a production environment. Remove test database and access to it? [Y/n] n ... skipping. Reloading the privilege tables will ensure that all changes made so far will take effect immediately. Reload privilege tables now? [Y/n] Y ... Success! Cleaning up... All done! If you've completed all of the above steps, your MariaDB installation should now be secure.

Thanks for using MariaDB!