安裝前需要徹底清除你的服務(wù)器計算機上原來安裝過的mysql、maraidb的文件，不然會出現(xiàn)各種問題。
CentOS7安裝MariaDB的流程步驟如下：

====================================================

• 執(zhí)行安裝命令: yum -y install mariadb*

  • 注意事項（這一步不是必須的，出現(xiàn)時可以這樣嘗試著解決）
    *mariadb 錯誤 [Errno 5] [Errno 12] Cannot allocate memory
    *一般云服務(wù)器內(nèi)存很低，可以設(shè)置一下 vi /etc/my.cnf[mysqld]innodb_buffer_pool_size=50M

• 開機自動啟動MariaDB：systemctl enable mariadb

• 啟動MariaDB：systemctl start mariadb

• 查看MariaDB狀態(tài)：systemctl status mariadb

• 初次安裝數(shù)據(jù)庫，進(jìn)行數(shù)據(jù)庫配置：

  • mysql_secure_installation
  • 提示：
    – 第一次操作直接回車
    – 第二次Set root password?[Y/n] 輸入Y
    – New password: 輸入你的密碼
    – 確認(rèn)密碼
  • Success!

• 登錄數(shù)據(jù)庫：mysql -uroot -p

• 設(shè)置字符集（建議設(shè)置為：UTF-8）：

  • vim /etc/my.cnf
  • [mysqld]后面追加以下內(nèi)容 init_connect='SET collation_connection = utf8_unicode_ci'init_connect='SET NAMES utf8'character-set-server=utf8collation-server=utf8_unicode_ciskip-character-set-client-handshake

• 修改文件：vim /etc/my.cnf.d/client.cnf

  • [client] 后面追加以下內(nèi)容 default-character-set=utf8

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

  • [mysql] 后面追加以下內(nèi)容 default-character-set=utf8

• 接著重啟服務(wù)生效：systemctl restart mariadb

• MYSQL客戶端進(jìn)入，查看字符集：

  • 登錄進(jìn)入：
    • show variables like "%character%";
    • show variables like "%collation%";

• 如果要開放遠(yuǎn)程登錄，得開放防火墻，允許3306訪問：

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

• MYSQL客戶端進(jìn)入修改權(quán)限，允許遠(yuǎn)程登錄：

  • 【選擇使用mysql數(shù)據(jù)庫】use mysql;
  • select user,host from user;
  • 【修改權(quán)限】update user set host='%' where host='localhost';
  • select user,host from user;
  • 【刷新使得權(quán)限生效】flush privileges;

• 測試：在其他計算機遠(yuǎn)程登錄

  • mysql -h域名 -uroot -p

good luck!

---

你可能遇到的錯誤：

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

解決辦法都是： 請檢查你的計算機是否有殘留的mysql或者mariadb版本的文件（特別是一些云服務(wù)器初始化時可能自帶的相關(guān)版本）

---

以下是整個安裝流程，供參考：

[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 ResolutionDependencies Resolved========================================================================================================================Package Arch Version Repository Size ======================================================================================================================== Installing:mariadb x86_64 1:5.5.64-1.el7 base 8.7 Mmariadb-bench x86_64 1:5.5.64-1.el7 base 388 kmariadb-devel x86_64 1:5.5.64-1.el7 base 755 kmariadb-embedded x86_64 1:5.5.64-1.el7 base 3.6 Mmariadb-embedded-devel x86_64 1:5.5.64-1.el7 base 7.4 Mmariadb-server x86_64 1:5.5.64-1.el7 base 11 Mmariadb-test x86_64 1:5.5.64-1.el7 base 8.1 M Updating:mariadb-libs x86_64 1:5.5.64-1.el7 base 759 k Installing for dependencies:dejavu-fonts-common noarch 2.33-6.el7 base 64 kdejavu-sans-fonts noarch 2.33-6.el7 base 1.4 Mfontconfig x86_64 2.13.0-4.3.el7 base 254 kfontpackages-filesystem noarch 1.44-8.el7 base 9.9 kgd x86_64 2.0.35-26.el7 base 146 klibX11 x86_64 1.6.7-2.el7 base 607 klibX11-common noarch 1.6.7-2.el7 base 164 klibXau x86_64 1.0.8-2.1.el7 base 29 klibXpm x86_64 3.5.12-1.el7 base 55 klibaio x86_64 0.3.109-13.el7 base 24 klibjpeg-turbo x86_64 1.2.90-8.el7 base 135 klibpng x86_64 2:1.5.13-7.el7_2 base 213 klibxcb x86_64 1.13-1.el7 base 214 kperl-Compress-Raw-Bzip2 x86_64 2.061-3.el7 base 32 kperl-Compress-Raw-Zlib x86_64 1:2.061-4.el7 base 57 kperl-DBD-MySQL x86_64 4.023-6.el7 base 140 kperl-DBI x86_64 1.627-4.el7 base 802 kperl-Data-Dumper x86_64 2.145-3.el7 base 47 kperl-Env noarch 1.04-2.el7 base 16 kperl-GD x86_64 2.49-3.el7 base 173 kperl-IO-Compress noarch 2.061-2.el7 base 260 kperl-Net-Daemon noarch 0.48-5.el7 base 51 kperl-PlRPC noarch 0.2020-14.el7 base 36 kperl-Test-Harness noarch 3.28-3.el7 base 302 kperl-Test-Simple noarch 0.98-243.el7 base 170 k Updating for dependencies:freetype x86_64 2.8-14.el7 base 380 kTransaction 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 transactionInstalling : 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 serverLoaded: loaded (/usr/lib/systemd/system/mariadb.service; enabled; vendor preset: disabled)Active: active (running) since Sun 2020-03-15 19:23:48 CST; 8s agoProcess: 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_installationNOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDBSERVERS 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!

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