Programmer Think

Beats Introduction to Beats: Lightweight data collector: Beats platform integrates a variety of single purpose data collectors. They come from hundreds or thousands of machines The device and system send data to Logstash or Elasticsearch.Beats series: full category collector to handle all data types. ① Filebeat: log file ② Metricbeat: ind ...

colony Cluster overview What is a cluster A group of computers interconnected through a high-speed network and managed in a single system modeMany servers come together to provide the same service, which looks like a server to the clientRelatively high benefits in performance, reliability and flexibility can be obtained at a lower costTa ...

RH358 manage DHCP and IP address assignment – configure IPv6 address assignment This chapter describes how to configure DHCP to allocate IPv6 addresses. Although it is still a bit weak, it can be used for understanding and learning. 1. Overview of IPv6 address automatic configuration IPv6 has many ways to configure network int ...

introduce When performing an NFS mount, you may see the device busy. In this case, you must force the uninstall in an appropriate way. View mounted partitions Using df -h to view partitions # df -h Filesystem Size Used Avail Use% Mounted on /dev/vda1 20G 3G 18G 7% / devtmpfs 236M 0 236M 0% /dev tmpfs 245M 0 245M 0% /dev/shm tm ...

preface File upload is an old topic. When the file is relatively small, you can directly convert the file into a byte stream and upload it to the server. However, when the file is relatively large, it is not a good way to upload it in an ordinary way. After all, few people will tolerate it. When the file is uploaded to half of the interrupt, I ...

Web Server Setup Introduction to Web Services The process by which a server interacts with a browser using the HTTP protocol The browser determines the URL of the web pageBrowser requests IP address resolved by domain name serverThe browser requests a TCP link from the host's port 80The server confirms the connection request and the proc ...

Computer network -- Cisco Packet Tracer experiment This experiment is based on Chess song teaching network complete There are 15 experiments in this part, which need to be completed by Cisco packet tracker software. Please first understand the concepts of VLSM, CIDR, RIP, OSPF, VLAN, STP, NAT and DHCP to enable network planning and configur ...

Main references: NIO learning documentation This great God writes very well and is easy to understand!!!!!!!! 1, NIO and IO contrast memory IONIOFlow orientedCache orientedBlocking IOnon-blocking IO selector Stream oriented and cache oriented Flow oriented Java IO is stream oriented, which means you read one or more bytes from a stream at a ...

How to use Linux Netlink 1, Netlink user mode construction process 1. Create a netlink based on a custom port_ Test socket. #define NETLINK_TEST 99 skfd = socket(AF_NETLINK, SOCK_RAW, NETLINK_TEST); //Create a socket using user defined protocol NETLINK_TEST. if (skfd == -1) { perror("create socket error\n"); return -1; } 2. Initialize s ...

Email sending process E-mail is a kind of information transmission behavior that uses the network to transmit information to remote servers. We usually use "account @ host name" for e-mail. However, due to "malicious mail" and "spam flooding", we are not allowed to directly use the host's ip address to send mail. ...