Johnny's Odyssey

Definition

source: https://www.tecmint.com/20-netstat-commands-for-linux-network-management/

netstat(network statistics) is a command line tool for monitoring connections both incoming and outgoing as well as viewing routing tables, interface statistics, etc.

Install a new MIT KDC

Install the KDC server

1. Install a new version of the KDC server

   1	yum install -y krb5-server krb5-libs krb5-workstation

options:
-c: create the archive
-x: extract the archive
-f: create or extract with the specific archive filename
-t: displays or lists files in an archived file
-v: display info
-z: using gzip

-C: extract files into a specific directory, not the current directory

1. Install MySQL server (not MySQL package)

   1	yum -y install mysql-server

2. Start and launch MySQL

   1 2 3

   service mysqld start mysql -uroot -p

CentOS6

1. Show the list of services that start on boot.

   1	chkconfig --list

2. Add a service to auto-start on boot.

   1 2	chkconfig --add service_name chkconfig service_name on

When you are using markdown code block, you may meet a strange circumstance that disorder within code blocks. Just like the image below.

System Requirements

At first, we need to think about the setups of VMs. So, I list a table for VMs below.

It is really a great determination for me to give up a comfortable and easy environment where I can complete all tasks successfully. Now, I had been to Shanghai for almost one month. And I need to study new development technology and make new friends in this unfamiliar city where I will be surrounded by loneliness.

check specific container’s ip address:

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docker inspect -f '{{range.NetworkSettings.Networks}}{{.IPAddress}}{{end}}' your_container_name_or_id

check all containers’ ip address:

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docker inspect -f '{{.Name}} - {{range.NetworkSettings.Networks}}{{.IPAddress}}{{end}}' $(docker ps -aq)