(10) Haproxy + preserved build Mycat cluster to achieve high availability

We can use haproxy + preserved with two Mycat to build a Mycat cluster to achieve high availability. HAProxy It realizes the cluster high availability and load balancing of MyCat, The high availability of HAProxy itself can be achieved through Keepalived.   Node description node ...

Posted on Sun, 07 Jun 2020 03:12:10 -0700 by Clarkeez

Linux Advanced_Details of DNS Services and BIND

It's not easy to succeed. Double your efforts! 1 Name Resolution Introduction and DNS 1.1 How DNS services work 1.2 DNS Query Type 1.3 Name Server 1.4 Parse Type 1.5 Complete Query Request Processes 2 DNS service related concepts and technologies 2.1 Type of DNS Server 2.2 Area Transport 2.3 Parsi ...

Posted on Sat, 06 Jun 2020 21:31:22 -0700 by beboni

Nagios monitoring server of three swordsmen

Blog directory 1, Nagios 1. Nagios introduction 2. Main functions of Nagios 3. The role of Nagios 4. Nagios common monitoring status 5. The principle of Nagios 2, Install LAMP environment 3, Install Nagios 1. Install Nagios components 2. Configure Apache to support Nagios 3. Configure SendMail messages 4, Nagios monitoring Linux client 1. Ins ...

Posted on Wed, 03 Jun 2020 21:28:04 -0700 by hostseller

Virtual management of kvm network

1. Linux Bridge Bridge Management Multiple virtual machines are added to a bridge. Virtual machines can communicate with each other, and at the same time, all virtual machines can connect to the external network.   The bridge management of kvm can be done by brctl command [root@localhost ~]# brctl .... ...

Posted on Sun, 31 May 2020 19:05:17 -0700 by pointsplat

CDH6.3.2 enable Kerberos authentication

Tags (space separated): building big data platform 1: How to install and configure KDC service 2: How to enable Kerberos through CDH 3: How to log in to Kerberos and access Hadoop related services 1: How to install and configure KDC service 1.1 system environment 1. Operating system: CentOS7.5x64 2.CDH6.3.2 3. Use root user fo ...

Posted on Sat, 30 May 2020 08:55:47 -0700 by radhoo

nfs network file system

]>NFS (Network File System), which is one of the file systems supported by FreeBSD, allows computers in the network to share resources through the TCP/IP network. In the application of NFS, the client application of local NFS can read and write files on the remote NFS server transparently, just like accessing local f ...

Posted on Thu, 28 May 2020 08:41:51 -0700 by proxydude

The sixth experiment report of operating system -- using semaphore to solve the problem of philosophers' meal

0 personal information Zhang yingzi 201821121038 Calculation 1812 1 purpose of the experiment Learn more about semaphores by programming. 2 experiment content On the server, we use Vim to write a program: use semaphore to solve any classical PV problem, test the result, and explain the running result. 3. Experiment report 3.1 choosing phi ...

Posted on Thu, 28 May 2020 00:52:24 -0700 by gbuck

Mysql_5.7 binary compile free installation

Mysql_5.7 and Mysql_5.6 large difference Mysql_5.7 installation steps 1. In the / usr/local/src directory, download the MySQL 64 bit package and extract it [root@dl-001 src]# wget http://mirrors.sohu.com/mysql/MySQL-5.7/mysql-5.7.17-linux-glibc2.5-x86_64.tar.gz [root@dl-001 src]# tar zxvf mysql-5.7.17-linux-glibc ...

Posted on Sun, 24 May 2020 08:07:19 -0700 by JWitness

shadowsocks-manager

Prepare to install postfix in preparation for using the smtp service 1) setsid ss-manager -m aes-256-cfb -u --manager-address 127.0.0.1:4000 2) $ mkdir ~/.ssmgr $ vim ~/.ssmgr/ss.yml 3)ss.yml type: s empty: false shadowsocks: address: 127.0.0.1:4000 manager: address: 0.0.0.0:6 ...

Posted on Sun, 17 May 2020 10:09:07 -0700 by herve

Using Mitutoyo cloud free server to build FastDFS basic service practice

FastDFS primary building The free server of Sanfeng cloud is used as the learning environment Here is a small list for Sanfeng cloud. Their free products are especially suitable for students like me preparation Start building Install dependencies Make the generated url accessible It has to be explained Write ...

Posted on Sun, 17 May 2020 01:08:21 -0700 by TheCase