Programming VIP

Application scenario Why use it? What's the advantage? This should be put at the beginning to say that only when you know what it is and what it is suitable for, can you better integrate it with your own projects. Where to use it and where to learn it? Learning it doesn't mean learning it doesn't mean we won't. We should usually consider more s ...

0 personal information Zhang yingzi 201821121038 Calculation 1812 1 purpose of the experiment Learn more about memory management through programming. 2 experiment content On the server, we use Vim to write a program: simulate a memory management algorithm, test the result, and explain the running result. 3. Experiment report 　　 Three po ...

Use Prometheus and Grafana to monitor MySQL server performance.Use two exporter s:Node? Exporter: server system data collectionmysqld_exporter: MySQL server data collectionMonitoring architecture: Prometheus installation configurationInstallation mode binary installation, see here for details CentOS7 deployment PrometheusVersion: current late ...

18.11 LVS DR mode construction preparation Three machines have public IP. Scheduler (director) IP: 192.168.230.135 real server1(real1) IP: 192.168.230.130 real server2(real2) IP: 192.168.230.145 VIP: 192.168.230.200 Start building Configure director [root@cham002 ~]# vim /usr/local/sbin/lvs_dr.sh #! /bin/bash echo 1 > /proc/s ...

1.find command Command format: find directory condition value 1.find -name find /etc/ -name passwd ##Find the file named passwd under / etc 2.find -user -group -a -o -not find /mnt -group root find /mnt -user westos find /mnt -group root -user student ##and find /mnt -group root -a -user student ##Both c ...

Nginx parsing PHP related configuration configuration file vim /usr/local/nginx/conf/vhost/test.com.conf ......... location ~ \.php$ { include fastcgi_params; //fastcgi_pass 127.0.0.1:9000 fastcgi_pass unix:/tmp/php-fcgi.sock; //There are two listening formats of fastcgi ﹐ pass, ...

for loop General format: for var in item1 item2 ... itemN do command1 command2 ... commandN done Write in one line: for var in item1 item2 ... itemN; do command1; command2... done; eg: Requirement: sum the numbers from 1 to 100. [root@dl-001 sbin]# vim sum.sh #!/bin/bash sum=0 for i in `seq ...

1. Questions: Hechuang technology has registered the domain name www.mvsc.com for the enterprise website and deployed two Nginx website servers. In order to improve the response speed of this site when serving users in different regions, hechuang technology purchased CDN cache service from bluenews. According to the needs of cache distribution, ...

1. Use route command to add //Routes added to hosts [root@localhost ~]# route add -host 8.8.8.8 dev ens3 [root@localhost ~]# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 172.25.8.250 0.0.0.0 UG 100 0 0 ens3 8.8.8.8 0.0.0.0 ...

(1) Auxiliary dns Set slave Select a machine as auxiliary dns machine Operation on auxiliary machine 1. yum install bind -y 2.vim /etc/named.conf listen-on port 53 { any; }; allow-query { any; }; dnssec-validation no; 3.vim /etc/named.rfc1912.zones zone "westos.com" IN { type slave; masters ...