Centos7.3 Install Nginx, MySQL, JDK, and Tomcat on the Cloud server

You are advised to save the installation software to the /usr/local directory

Tomcat

./start.sh  / / start
./shutdown.sh / / stop
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JDK

• The installation of the JDK is familiar with, download will not say more, version or choose 1.8. For configuration of the post-installation environment, please refer to my article: blog.csdn.net/qq_41684621…

Nginx

yum -y install gcc gcc-c++
wget http:/ / nginx.org/download/nginx-1.10.1.tar.gz
yum  -y install pcre-devel openssl-devel
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./configure --prefix=/usr/local/nginx
yum -y install gcc gcc-c++ autoconf automake make    // Install c compiler
make && make install
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./nginx			/ / start
./nginx -s stop	/ / stop
./nginx -s reload	// Overload configuration
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MySQL

Download the mysql repo source

wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm 
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Install mysql – community – release – el7-5. Noarch. RPM package

rpm -ivh mysql-community-release-el7-5.noarch.rpm
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Look at the

ls -1 /etc/yum.repos.d/mysql-community*
/etc/yum.repos.d/mysql-community.repo
/etc/yum.repos.d/mysql-community-source.repo
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Repo: /etc/yum. Repos. D /mysql-community. Repo: /etc/yum.

Mysql installation

yum install mysql-server
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Log in and change the password Use the default password to log in

mysql -uroot -p
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ERROR 2002 (HY000): Can “t connect to local MySQL server through socket ‘/ var/lib/MySQL/MySQL. The sock’ (2), the reason is that the/var/lib/MySQL access problems. Mysql > change the owner of /var/lib/mysql to the current user:

chown -R openscanner:openscanner /var/lib/mysql
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If chown: is invalid user :openscanner :openscanner error is reported, change the command, and use ll to view the directory permission list

chown root /var/lib/mysql/
ll
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The attached: ① Change the file owner (chown) [root@linux ~]# chown account name File or directory ② Change the user group of the file by running the command CHGRP [root@linux ~]# CHGRP group name File or directory ③ Change the directory permission. By default, only the current level is changed. If the subdirectory is also recursive, you need to add R parameter Chown -r: to recurse, along with all files and directories in the subdirectory

Then, restart the service:

systemctl mysqld restart
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Next login to reset password:

mysql -u root -p
mysql > use mysql;
mysql > update user set password = 'New password' where user='root';
mysql > exit;
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If you cannot log in to the mysql server, perform the following operations: Start the mysql server and check its running status.

systemctl start mysqld		// Start the mysql service
service mysqld status	// Check the status of mysql
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Method one:

grep 'temporary password' /var/log/mysqld.log
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After running it, I get a temporary password. In this case, my Centos7.3 does not respond, so I try the second method

Method 2:

1. MySQL > alter table logon;

 vim /etc/my.cnf
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Add a sentence to the [mysqld] paragraph:

skip-grant-tables
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2. Restart mysql

systemctl mysql restart
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3. MySQL > alter user root password

 mysql> use mysql; 
 Database changed 
 mysql> update user set password = 'New password' where user = 'root'; 
 Query OK, 0 rows affected (0.00 sec) 
 Rows matched: 5 Changed: 0 Warnings: 0 
 mysql> flush privileges; 
 Query OK, 0 rows affected (0.01 sec) 
 mysql> quit
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4. Change MySQL login Settings to no password

vim /etc/my.cnf
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Comment out skip-grant-tables in [mysqld]

# skip-grant-tables
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Save and exit vim 5. Restart mysql

sytemctl mysql restart
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If the password is set, the user does not need to log in to the mysql server again. In this case, the user needs to restart the server:

reboot
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If you need to remotely log in to mysql on a local Navicat server, you can refer to my article: blog.csdn.net/qq_41684621…