Unit MySQL appears in MySQL Solution of service could not be found

Image download 、 Domain name resolution 、 Time synchronization please click Alibaba cloud open source image station

Preface

Appear this kind of bug

Unit mysql.service could not be found

because bug I fixed it , Here is a quote from netizens bug Screenshot

1. principle

The reason for using the command line service mysqld status appear Unit mysql.service could not be found Of bug

Here's why ：

installed mysql after

Found in init.d There is no mysql Service for

So use service mysqld status, Because it can't find mysql perhaps mysqld Service for

According to the above principle

The scheme can be given as follows ：

• If not installed mysql, Reinstall mysql, Look at the init.d Is there a mysql Service for
• If installed mysql, stay init.d There is still no such thing in mysql Service for , Then through global search mysql Service for （ It may have been loaded elsewhere ）, And then copy it to init.d Then you can

2. Solution

2.1 No installation mysql

According to the results given above

Can pass apt-get install install mysql

Or by yum install install mysql

Use specific commands according to your computer operating system

Or directly through wegt The command of directly one click download rpm And install rpm My bag

Find the bag you want through the official website

mysql Official Website Package

• wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm, The version is relatively low You can also use the following , Higher version number wget http://repo.mysql.com/mysql80-community-release-sles12.rpm

• rpm -ivh mysql-community-release-el7-5.noarch.rpm

• apt-get install mysql-server

Newly installed package You can check whether there is mysql My bag

Add boot auto start

Distinguish good yes mysqld still mysql

Use command systemctl enable mysql

Look at the mysql The state of

Use command service mysql status

2.2 Installed mysql

If installed mysql Then there is this bug

Enter... On the command line find / -name mysqld perhaps find / -name mysql

find mysql Service path of

Copy its services to init.d Under the document

Use command cp File path /etc/init.d/mysqld

After the start mysql that will do

If you're looking for mysql When the package path of

It is found that this kind of bug

It is suggested to use method 1 directly , Download a new mysql

3. summary

Generally just installed mysql There will be such bug, You need to reset some passwords and users

Link to the original text ：https://blog.csdn.net/weixin_47872288/article/details/122285209