Ubuntu Linux上的NTP
首先，我们将使用NTP配置系统以使用正确的日期和时间。
在Linux控制台上，使用以下命令设置正确的时区
# dpkg-reconfigure tzdata
# apt-get update
# apt-get install ntpdate
# ntpdate pool.ntp.brNtpdate命令用于使用server：pool.ntp.br设置正确的日期和时间
# apt-get install ntp查看系统时间是否显示正确的时间
#date如果系统时间是正确的时间，继续下一步
Ubuntu Linux上的MariaDB
安装数据库前先更改源
# vim /etc/apt/sources.list
# 阿里源
deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse# 清华源deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiversedeb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiversedeb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiversedeb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiversedeb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiversedeb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiversedeb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiversedeb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiversedeb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiversedeb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
# 中科大源
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse更新源，然后开始安装数据库服务
# apt-get update
# apt-get install software-properties-common
# apt-key adv --recv-keys --keyserver hkp://keyserver.ubuntu.com:80 0xF1656F24C74CD1D8
# add-apt-repository 'deb [arch=amd64,i386] http://nyc2.mirrors.digitalocean.com/mariadb/repo/10.2/ubuntu artful main'
# apt-get update
# apt-get install mariadb-server mariadb-client安装向导将要求您提供root用户的密码。
完成安装后，使用以下命令访问MariaDB数据库服务器。
要访问数据库服务器，请输入MariaDB服务器安装向导上设置的密码，使用SQL命令创建名为itop的数据库，使用SQL命令创建名为itop的数据库用户，为名为itop的数据库提供名为itop的sql用户权限。
# mysql -u root -p
CREATE DATABASE itop CHARACTER SET UTF8 COLLATE UTF8_BIN;
CREATE USER 'itop'@'%' IDENTIFIED BY 'itop123';
GRANT ALL PRIVILEGES ON itop.* TO 'itop'@'%';
quit;在Linux上安装Apache（php7.4）
# apt-get install apache2 php7.4 php7.4-cli libapache2-mod-php7.4
# apt-get install php7.4-mysql php7.4-mcrypt php7.4-ldap php7.4-soap php7.4-json
# apt-get install php7.4-xml php7.4-gd php7.4-zip graphviz查看php状态
#systemctl status apache2.service在Ubuntu上安装iTOP(3.0以上)
下载iTop-3.0.2
#apt-get install unzip software-properties-common
# wget https://sourceforge.net/projects/itop/files/itop/3.0.2-1/iTop-3.0.2-1-9957.zip
# unzip iTop-3.0.2-1-9957.zip将所有iTOP文件移动到Apache安装的根目录。
为所有移动的文件设置正确的文件权限。
mkdir /var/www/html/itop
# mv /downloads/web/* /var/www/html/itop/
# cd /var/www/html/itop
# mkdir conf data env-production env-production-build log
# chown www-data.www-data /var/www/html/itop/* -R
# chown www-data.www-data /var/www/html/itop -R重启php;
打开浏览器并输入Web服务器的IP地址加/ itop。
在我们的示例中，在浏览器中输入了以下URL：
•http：//192.168.20.114/itop
应显示iTOP Web安装界面。操作步骤如下：
