執行命令yum -y list java*
查看可安裝java版本。java
Failed to set locale, defaulting to C
Loaded plugins: fastestmirror
base | 3.6 kB 00:00:00
extras | 3.4 kB 00:00:00
updates | 3.4 kB 00:00:00
(1/4): base/7/x86_64/group_gz | 166 kB 00:00:00
(2/4): extras/7/x86_64/primary_db | 201 kB 00:00:00
(3/4): updates/7/x86_64/primary_db | 5.0 MB 00:00:00
(4/4): base/7/x86_64/primary_db | 6.0 MB 00:00:00
Determining fastest mirrors
* base: ftpmirror.your.org
* extras: mirror.fileplanet.com
* updates: centos.mirror.constant.com
Available Packages
java-1.6.0-openjdk.x86_64 1:1.6.0.41-1.13.13.1.el7_3 base
java-1.6.0-openjdk-demo.x86_64 1:1.6.0.41-1.13.13.1.el7_3 base
java-1.6.0-openjdk-devel.x86_64 1:1.6.0.41-1.13.13.1.el7_3 base
java-1.6.0-openjdk-javadoc.x86_64 1:1.6.0.41-1.13.13.1.el7_3 base
java-1.6.0-openjdk-src.x86_64 1:1.6.0.41-1.13.13.1.el7_3 base
java-1.7.0-openjdk.x86_64 1:1.7.0.221-2.6.18.0.el7_6 updates
java-1.7.0-openjdk-accessibility.x86_64 1:1.7.0.221-2.6.18.0.el7_6 updates
java-1.7.0-openjdk-demo.x86_64 1:1.7.0.221-2.6.18.0.el7_6 updates
java-1.7.0-openjdk-devel.x86_64 1:1.7.0.221-2.6.18.0.el7_6 updates
java-1.7.0-openjdk-headless.x86_64 1:1.7.0.221-2.6.18.0.el7_6 updates
java-1.7.0-openjdk-javadoc.noarch 1:1.7.0.221-2.6.18.0.el7_6 updates
java-1.7.0-openjdk-src.x86_64 1:1.7.0.221-2.6.18.0.el7_6 updates
java-1.8.0-openjdk.i686 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk.x86_64 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-accessibility.i686 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-accessibility.x86_64 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-accessibility-debug.i686 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-accessibility-debug.x86_64 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-debug.i686 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-debug.x86_64 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-demo.i686 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-demo.x86_64 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-demo-debug.i686 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-demo-debug.x86_64 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-devel.i686 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-devel.x86_64 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-devel-debug.i686 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-devel-debug.x86_64 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-headless.i686 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-headless.x86_64 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-headless-debug.i686 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-headless-debug.x86_64 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-javadoc.noarch 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-javadoc-debug.noarch 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-javadoc-zip.noarch 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-javadoc-zip-debug.noarch 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-src.i686 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-src.x86_64 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-src-debug.i686 1:1.8.0.212.b04-0.el7_6 updates
java-1.8.0-openjdk-src-debug.x86_64 1:1.8.0.212.b04-0.el7_6 updates
java-11-openjdk.i686 1:11.0.3.7-0.el7_6 updates
java-11-openjdk.x86_64 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-debug.i686 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-debug.x86_64 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-demo.i686 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-demo.x86_64 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-demo-debug.i686 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-demo-debug.x86_64 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-devel.i686 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-devel.x86_64 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-devel-debug.i686 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-devel-debug.x86_64 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-headless.i686 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-headless.x86_64 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-headless-debug.i686 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-headless-debug.x86_64 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-javadoc.i686 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-javadoc.x86_64 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-javadoc-debug.i686 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-javadoc-debug.x86_64 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-javadoc-zip.i686 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-javadoc-zip.x86_64 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-javadoc-zip-debug.i686 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-javadoc-zip-debug.x86_64 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-jmods.i686 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-jmods.x86_64 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-jmods-debug.i686 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-jmods-debug.x86_64 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-src.i686 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-src.x86_64 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-src-debug.i686 1:11.0.3.7-0.el7_6 updates
java-11-openjdk-src-debug.x86_64 1:11.0.3.7-0.el7_6 updates
java-atk-wrapper.i686 0.30.4-5.el7 base
java-atk-wrapper.x86_64 0.30.4-5.el7 base
java_cup.noarch 1:0.11a-16.el7 base
java_cup-javadoc.noarch 1:0.11a-16.el7 base
java_cup-manual.noarch 1:0.11a-16.el7 base
javacc.noarch 5.0-10.el7 base
javacc-demo.noarch 5.0-10.el7 base
javacc-javadoc.noarch 5.0-10.el7 base
javacc-manual.noarch 5.0-10.el7 base
javacc-maven-plugin.noarch 2.6-17.el7 base
javacc-maven-plugin-javadoc.noarch 2.6-17.el7 base
javamail.noarch 1.4.6-8.el7 base
javamail-javadoc.noarch 1.4.6-8.el7 base
javapackages-tools.noarch 3.4.1-11.el7 base
javassist.noarch 3.16.1-10.el7 base
javassist-javadoc.noarch 3.16.1-10.el7 base
複製代碼
選擇一個java版本進行安裝,這裏咱們但願安裝java1.8,由於咱們的機器是64位的,因此選擇安裝java-1.8.0-openjdk-devel.x86_64
。node
執行命令mysql
$ yum install -y java-1.8.0-openjdk-devel.x86_64
複製代碼
執行完後會看見控制檯刷出不少輸出。linux
Dependency Updated:
chkconfig.x86_64 0:1.7.4-1.el7 glib2.x86_64 0:2.56.1-2.el7 nspr.x86_64 0:4.19.0-1.el7_5
nss.x86_64 0:3.36.0-7.1.el7_6 nss-softokn.x86_64 0:3.36.0-5.el7_5 nss-softokn-freebl.x86_64 0:3.36.0-5.el7_5
nss-sysinit.x86_64 0:3.36.0-7.1.el7_6 nss-tools.x86_64 0:3.36.0-7.1.el7_6 nss-util.x86_64 0:3.36.0-1.1.el7_6
ntsysv.x86_64 0:1.7.4-1.el7
Complete!
複製代碼
看到上面的提示,就表示已經安裝完成了。git
檢查時候安裝成功,查看Java版本(Java被安裝在/usr/lib/jvm目錄下面)
spring
java -version
複製代碼
安裝前,咱們能夠檢測系統是否自帶安裝 MySQL:sql
rpm -qa | grep mysql
複製代碼
若是你係統有安裝,那能夠選擇進行卸載:shell
rpm -e mysql  // 普通刪除模式
rpm -e --nodeps mysql  // 強力刪除模式,若是使用上面命令刪除時,提示有依賴的其它文件,則用該命令能夠對其進行強力刪除
複製代碼
安裝 MySQL:數據庫
接下來咱們在 Centos7 系統下使用 yum 命令安裝 MySQL,須要注意的是 CentOS 7 版本中 MySQL數據庫已從默認的程序列表中移除,因此在安裝前咱們須要先去官網下載 Yum 資源包,下載地址爲:dev.mysql.com/downloads/r…centos
$ wget http://repo.mysql.com/mysql80-community-release-el7-3.noarch.rpm
$ rpm -ivh mysql80-community-release-el7-3.noarch.rpm
$ yum update
$ yum install mysql-server
複製代碼
安裝完成!
Installed:
mysql-community-server.x86_64 0:8.0.16-2.el7
Dependency Installed:
mysql-community-client.x86_64 0:8.0.16-2.el7 net-tools.x86_64 0:2.0-0.24.20131004git.el7
numactl-libs.x86_64 0:2.0.9-7.el7
Complete!
複製代碼
權限設置:
$ chown mysql:mysql -R /var/lib/mysql 複製代碼
初始化 MySQL:
$ mysqld --initialize 複製代碼
啓動 MySQL:
$ systemctl start mysqld 複製代碼
查看 MySQL 運行狀態:
$ systemctl status mysqld 複製代碼
在成功安裝 MySQL 後,一些基礎表會表初始化,在服務器啓動後,你能夠經過簡單的測試來驗證 MySQL 是否工做正常。
使用 mysqladmin 工具來獲取服務器狀態:
使用 mysqladmin 命令倆檢查服務器的版本, 在 linux 上該二進制文件位於 /usr/bin 目錄,在 Windows 上該二進制文件位於C:\mysql\bin 。
$ mysqladmin --version 複製代碼
linux上該命令將輸出如下結果,該結果基於你的系統信息:
$ mysqladmin Ver 8.23 Distrib 5.0.9-0, for redhat-linux-gnu on i386 複製代碼
若是以上命令執行後未輸出任何信息,說明你的MySql未安裝成功。
Mysql安裝成功後,默認的root用戶密碼爲空,你可使用如下命令來建立root用戶的密碼:
$ mysqladmin -u root password 'new_password'; 複製代碼
在root權限下mysqladmin -u root password <new_possword>;
以及mysql
出現
Access denied for user 'root'@'localhost' (using password: NO)
複製代碼
解決辦法:
查詢初始密碼:
$ cat /var/log/mysqld.log | grep password 複製代碼
出現:
2019-05-16T04:59:55.675274Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: BT?lm5c+Q+hw
複製代碼
其中BT?lm5c+Q+hw
就是初始密碼
使用初始密碼登陸
$ mysql -u root -p 複製代碼
修改密碼:
ALTER USER 'root'@'localhost' IDENTIFIED BY 'new_password'; 複製代碼
如今你能夠修改以後的密碼經過如下命令來鏈接到Mysql服務器:
$ mysql -u root -p Enter password:******* 複製代碼
以root權限登陸數據庫
$ mysql -u root -p 複製代碼
切換到mysql的系統數據庫
mysql> use mysql;
mysql> update user set host='%' where user='root';
複製代碼
查詢修改狀況
mysql> select host,user from user;
複製代碼
賦予任何主機訪問數據的權限
mysql> FLUSH PRIVILEGES # 刷新權限
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%'WITH GRANT OPTION;
mysql> FLUSH PRIVILEGES
複製代碼
若是想myuser用戶使用mypassword密碼從任何主機鏈接到mysql服務器的話。
mysql> GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%'IDENTIFIED BY 'mypassword' WITH GRANT OPTION;
複製代碼
若是你想容許用戶myuser
從ip爲192.168.1.6
的主機鏈接到mysql服務器,並使用mypassword
做爲密碼
mysql> GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'192.168.1.3'IDENTIFIED BY 'mypassword' WITH GRANT OPTION;
複製代碼
#登陸mysql mysql -u username -p #退出mysql quit #啓動mysql systemctl start mysqld.service #結束 systemctl stop mysqld.service #重啓 systemctl restart mysqld.service #開機自啓 systemctl enable mysqld.service #查看mysql版本 select version(); 複製代碼
使用IDEA和maven一鍵打包生成jar包
)使用nohup
不掛斷地運行命令。使用&
讓程序在後臺運行
$ nohup java -jar spring-boot-api-project-seed-1.0.jar & 複製代碼
使用上述方式系統會自動將控制檯日誌信息寫入nohup.out
文件中。 若是想寫入本身定義的文件請使用
$ nohup java -jar spring-boot-api-project-seed-1.0.jar > log.txt &
複製代碼
$ ps -ef 複製代碼
根據運行的目錄,找到PID,例如圖中的734
。而後使用
$ kill -9 734 複製代碼
殺死該進程。