Advantages and disadvantages of Linux server monitoring

This article describes the advantages and disadvantages of three Linux server monitoring technologies, including SNMP proxy (client), SSH, and private proxy (client) installation. The powerful functions and beautiful interfaces of the linux system make many enterprises use the linux system as the server. below are three types of introduction...
This article describes the advantages and disadvantages of three Linux server monitoring technologies, including SNMP proxy (client), SSH, and private proxy (client) installation. The powerful functions and beautiful interfaces of linux make many enterprises use linux as servers. The following describes the advantages and disadvantages of the three Linux server monitoring technologies. Linux Server Monitoring Technology 1. as an international network management protocol, the SNMP proxy (client) method www.2cto.com SNMP (SimpleNetworkManagementProtocol) is widely used in the management of various vswitches, routers, and other network devices, more and more servers are being monitored. The advantage of using SNMP to monitor servers is that, once an SNMPAgent is deployed on a common server, any software that can implement the SNMP protocol can monitor it, in addition, the user name and password of the monitored server are not required for monitoring through this method, so it is safer. The disadvantage is that many servers do not install SNMPAgent by default. if you want to use this method for monitoring, you need to install and deploy all servers. In addition, the parameter indicators monitored by this method are relatively fixed and not in-depth, if the user has special requirements that cannot be met (most users do not have the ability to perform secondary development on the user), the SNMP protocol is implemented through UDP, it is difficult to guarantee the reliability when the network condition is poor. Linux server monitoring technology 2. SSH is the same in principle. software logs on to the server through the corresponding client protocol to execute commands, and then parse the results for monitoring. It has the advantage that the server usually has the corresponding server software installed by default, so it is easier to monitor and do not need to install other software, but it needs to know the corresponding user name and password of the server, this is not easy for many users to accept. In addition, in the actual environment, the user names and passwords of many servers are often changed due to security reasons, which brings great trouble to the monitoring software, it is inconvenient to change the password, especially when the number of servers being monitored is large, and the parameters that can be monitored are also limited by permissions and commands, many customers may not be able to obtain the monitoring metrics they are concerned about. In addition, its unrestricted remote control capabilities also make users uneasy. Linux server monitoring technology 3. install the private proxy (client) method www.2cto.com. this method is implemented by installing lightweight agent software on the monitored machine, it has the advantage that the monitoring indicators are in-depth and targeted. compared with SNMP, it can almost meet any monitoring needs of the customer, and because it does not need to know the user name and password of the monitored server, so the security is also good. Most private proxies use private protocols and are implemented in TCP mode, which guarantees the reliability. The disadvantage is that the deployment is relatively troublesome. the agent software needs to be installed one by one at first. However, once the installation is complete, if new monitoring functions are developed later, the agent software can be automatically upgraded from the server, this makes up for the inconvenience caused by deployment. To sum up, various monitoring methods have their own advantages and disadvantages and need to be used in the actual environment according to the actual situation. However, from the perspective of the major development trend, SNMP and private proxy should be the main methods. Conclusion: We hope that the advantages and disadvantages of the Linux server monitoring technology described in this article will be helpful to readers. more knowledge about linux systems remains to be explored and learned by readers.