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Reset - Mysql - password-ubuntu

Reset MySQL root password in ubuntu edit config file by sudo gedit /etc/mysql/mysql.conf.d/mysqld.cnf in [mysqld] section, below ‘skip-external-locking’ add line skip-grant-tables restart MySQL sudo systemctl restart mysql enter mysql mysql -u root -p switch to mysql database use mysql; change root password to ‘passwd’： UPDATE mysql.user SET authentication_string=password('passwd') WHERE User='root' AND Host ='localhost'; update plugin field： UPDATE user SET plugin="mysql_native_password"; （plugin field is used to authenticate user, if it is empty, server will use built-in method)

Set - Env - JDK - Maven - ubuntu

Set env for JDK and Maven ubuntu Edit /etc/profile sudo vi /etc/profile add below lines to the bottom #set maven env export M2_HOME=/usr/local/apache-maven-3.6.1 export CLASSPATH=$CLASSPATH:$M2_HOME/lib export PATH=$PATH:$M2_HOME/bin #set Java environment export JAVA_HOME=/usr/lib/jdk1.8.0_191 export JRE_HOME=$JAVA_HOME/jre export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH activate the changes source /etc/profile /etc/profile Edit bashrc sudo vi ~/.bashrc add below lines in the front #set maven env export M2_HOME=/usr/local/apache-maven-3.

k8s - CentOS7 - Installation

kubernetes installation on Centos7 介绍下环境，4个节点的情况如下： 节点名 IP OS 安装软件 Master 10.211.55.6 Centos7 kubeadm，kubelet，kubectl，docker Node1 10.211.55.7 Centos7 kubeadm，kubelet，kubectl，docker Node2 10.211.55.8 Centos7 kubeadm，kubelet，kubectl，docker Node3 10.211.55.9 Centos7 kubeadm，kubelet，kubectl，docker 其中kubeadm,kubectl,kubelet的版本为v1.10.0，docker的版本为1.13.1。 一.各节点前期的准备工作： 1.关闭并停用防火墙 ​ systemctl stop firewalld.service ​ systemctl disable firewalld.service 2.永久关闭SELinux ​ vim /etc/selinux/config ​ SELINUX=disabled 3.同步集群系统时间 ​ yum -y install ntp ​ *ntpdate 0.*asia.pool.ntp.org 4.重启机器 ​ reboot