Programmer Group

1. Basic knowledge of Keepalived dual-machine warm-up Official keepalived website: www.keepalived.org/ Ke keepalived can also be used as a hot standby software in non-LVS environments. 1. Keepalived role Kekeepalived was originally designed as a powerful assistive tool for LVS, primarily to provide failover and health check functions - to dete ...

1.firewalld sharing Internet 1. Server operation (server with external network) 1. Turn on the firewall and join the startup [root@zeq ~]# systemctl start firewalld [root@zeq ~]# systemctl enable firewalld 2. Remove the rule that the default owner can access ssh [root@zeq ~]# firewall-cmd --remove-service=ssh --permanent 3. Add only allow 10.0. ...

Log service Modify the log service configuration and restart the log service; vim /etc/rsyslog.conf Edit the system log configuration to specify the included profile path and rules: $IncludeConfig /etc/rsyslog.d/*.conf Create a separate configuration file for haproxy; vim /etc/rsyslog.d/haproxy.conf Edit the configuration file as follows: ...

Absrtact: This article mainly studied how to install Tomcat server in Linux environment. Preparation Check Java environment variables Check whether the system is configured with Java environment variables: 1 [root@localhost ~]# java -version 2 java version "1.8.0_91" 3 Java(TM) SE Runtime Environment (build 1.8.0_91-b14) 4 Java HotSpot(TM) 64- ...

I. preliminary preparation 1.1 basic knowledge Heketi provides a RESTful management interface that can be used to manage the life cycle of a GlusterFS volume. Heketi will dynamically select bricks to build the required volumes in the cluster, so as to ensure that the copies of data will be distributed to different failure domains in the clust ...

Installation and Configuration of Nginx 0 Installation Slightly, download it on the official website.Note that Nginx is written in C and is not cross-platform. Different operating systems need to download different Nginx. Nginx Basic Commands under 1 Windows start-up start nginx Close ./nginx -s quit ./nginx -s stop see information ./nginx -V ...

CentOS 6.5 install Redis3.0 1. Install C compilation environment First, you need to install the C environment for compiling Redis, and execute the following commands at the command line: [root@itzhouq32 tools] yum install gcc-c++ 2. Upload redis3.0 to Linux 3. Unzip redis. I unzip it to / usr/local [root@itzhouq32 tools]# tar -xvf redis-3.0.0.t ...

iptables setting h323 dynamic open port 1. Insert h323 module In order to support the h323 protocol, the kernel needs to insert the NF conntrack, NF NAT, and h323 modules. modprobe nf_conntrack_h323 modprobe nf_nat_h323 2. Configure iptables rules h323 uses 1719, 1720 ports. But mainly use port 1720. The prototype of ip ...

About Keepalived Keepalived is originally designed for LVS, which is specially used to monitor the status of each service node in the cluster system. It detects the status of each service node according to the third, fourth and fifth layer switching mechanisms of the TCP/IP reference model. If a server node is abnormal, or the ...

As I said before A picture of the network architecture of microservices , through this article, you can understand the stand-alone installation process in FastDFS components. Stand alone architecture The following are the installation steps of FastDFS I. environmental preparation CentOS 7.X libfastcommon Version used: libfastcommon-1.0.41.tar. ...