ENSP -- vgmp and HRP protocol -- dual hot standby of firewall

1, Introduction of firewall hot standby Overview of dual hot standby Dual hot standby is to solve single point of failure and realize smooth transition of business (session table needs to be synchronized) The hot standby modes of Huawei firewall include: hot standby mode and load balancing mode ...

Posted by biannucci on Sun, 16 Feb 2020 04:19:09 -0800

MySQL highly available KeepAlived + Dual hosts

MySQL highly available KeepAlived dual hosts In the production environment, one MySQL host has a single point of failure, so we need to ensure the high availability of MySQL, that is, two MySQL servers. If one of the MySQL servers hangs up, the other can take over immediately.MySQL's high availability schemes are generally as follows: keepali ...

Posted by Joe Haley on Sat, 15 Feb 2020 21:49:04 -0800

kubernetes binary cluster deployment three -- load balancing scheduler deployment

Key points: 1. Experimental environment 2. Load balancing scheduler deployment 1, Experimental environment: Based on the previously deployed multi Master cluster architecture, deploy two scheduler servers (nginx is used here) to achieve load balancing: Deployment 1 of kubernetes binary cluster - deployment of etcd storage component and flan ...

Posted by micbox on Mon, 10 Feb 2020 00:30:53 -0800

Kubernetes cluster deployment -- binary cluster load balancing

Based on the previously deployed multi Master cluster architecture, deploy two scheduler servers (nginx is used here) to achieve load balancing:Again, the environment: role IP address master01 192.168.100.110 master02 192.168.100.109 Scheduler 1 (nginx01) 192.168.100.113 Scheduler 2 (nginx02 ...

Posted by edtlov on Sun, 09 Feb 2020 21:44:07 -0800

RHCE exam summary (continuously updated)

Environmental preparation 1. Configure YUM software warehouse server and desktop machine do the same operation!!!!   # // server: $ vim /etc/yum.repos.d/base.repo [rhce] name = EX300 gpgcheck = 0 baseurl = http://classroom.example.com/content/rhel7.0/x86_64/dvd/ ### Clear the previous software warehouse cache $ yum clean ...

Posted by iamyespee on Sun, 09 Feb 2020 03:55:34 -0800

frp + nginx deploy http intranet penetration service

frp + nginx deploy http intranet penetration service 1, Foreword frp is a high-performance reverse proxy application developed in Go language, which can be used for intranet penetration. It supports tcp, udp, http and https. A web service deployed on the local machine can be mapped to an external n ...

Posted by djlfreak on Fri, 07 Feb 2020 02:40:24 -0800

Simulate weak network environment using command line under Mac

For audio and video development, we often need to simulate the weak network environment and observe the performance of APP under the weak network, such as packet loss, delay, jitter, bandwidth restriction, etc. Mac system has a weak network tool APP, called Network Link Conditioner, which supports the visualization of the simulation and config ...

Posted by bugsuperstar37 on Sun, 02 Feb 2020 10:19:02 -0800

1. Simple Topology

1. Simple Topology Preparatory Knowledge Points Router principles: As the third layer device, the basic function of a router is to select routes according to the network layer address.After it judges the packets it receives based on the destination address, it sends them from the interface that can re ...

Posted by Chrysanthus on Sat, 01 Feb 2020 18:44:33 -0800

Solution of LVS Dr + preserved

Reference resources https://www.cnblogs.com/liaojiafa/p/6087276.html Four hosts are in a LAN. The ip of LVS_master is 192.168.1.196, LVS backup is 192.168.1.197, the ip of two web servers is 192.168.1.200192.168.1.201, and the virtual ip is 192.168.1.198. It can be seen from the keepalived configuration file. The experimenta ...

Posted by voitek on Fri, 31 Jan 2020 07:53:49 -0800

lvs cluster implements lvs Dr model and lvs NAT model

ipvsadm The ipvsadm command is the management tool of lvs Cluster in the application layer. We can use this ipvsadm to manage the configuration of lvs. In fact, it implements the cluster service management: add, delete, change, RS management of cluster service: add, delete, change and view the cluster status. Management cluster service: add, ch ...

Posted by frao_0 on Fri, 31 Jan 2020 02:54:13 -0800