Centos service details

 
 
NetworkManager
Automatically switch between multiple network connections. If your computer has Wireless WiFi and multiple network connection types of Ethernet, you can choose to enable it.
After it is enabled, it overwrites/etc/resolv. conf and adds the DNS to the/etc/sysconfig/network-scripts/ifcfg-xxx file:
Dns1 = A. B. C. d
Dn22 = E. F. G. H
 
Networkmanagerdispatcher
 
Acpid
Acpid (Advanced Configuration and Power Interface) is a new power management standard to replace the traditional APM power management standard. Generally, the laptop needs to be powered on for management.
 
Anacron
Automatically run the task daemon. Red Hat Linux tool with four automated tasks: Cron, anacron, at, and BATC. When your Linux server is not running all day long, this anacron will help you execute the work that has not been executed within the time set by "crontab.
 
Apmd
Advanced Power Management
 
ATD
Automatically run the task daemon.
 
Auditd
Audit information, write the message to the console and audit_warn email alias. Used to store system review records generated by the kernel. These records will be used by some programs. Especially for SELinux users.
 
Autofs
Automatic Installation of the management process automount, associated with NFS, depends on NIS
 
Avahi-daemon
 
The specific implementation of zeroconf configuration is useful for local network services without DNS. It is similar to mdns and can be disable.
 
Avahi-dnsconfd
Avahi-dnsconfd connects to a running avahi-daemon and runs the script/etc/avahi/dnsconf. Action for each unicast DNS server that is announced on the local LAN.

This is useful for processing ing unicast DNS servers in a DHCP-like fashion with mdns.
 
Bluetooth
Bluetooth
 
Capi is only useful for users who use ISDN devices.
 
Conman
 
Console Management
 
Cpuspeed
Monitor the idle percentage of the system to reduce or speed up the CPU clock speed and voltage so as to minimize the energy consumption when the system is idle, while maximizing the system execution speed when the system is busy.
 
Crond
Automatically scheduled tasks
 
Cups
Cups (Common Unix Printing System) is a general Unix print daemon process that provides the Third Generation printing function for Linux.
 
Dhcdbd
DHCP
 
Dnsmasq
Cache external DNS records
 
Dund
Bluetooth Dial-Up Network
 
Firstboot
The User Configuration Wizard after installation is used to set the system for the first time.
 
GPM
The general purpose mouse daemon provides mouse support for Linux programs such as MC (midnight Commander) in text mode. It also supports the copy and paste operations and pop-up menus on the console.
 
Haldaemon
Hardware Monitoring System
 
Hidd
Bluetooth h. I. D. Server
 
Maid
HP Linux Imaging and printing (nnmi IP)
 
Ibmasm this package is used to help with IBM advance system management PCI
Adapter, also known as Rsa I communication. If you are using rsa ii, download
After the corresponding software package, you need to manually uninstall ibmasm.
 
Ip6tables
IPv6 tables firewall daemon.
 
IPMI
 
Iptables
Iptables firewall daemon.
 
IRDA
Infrared port daemon.
 
Irqbalance
The server Load balancer daemon that balances system interrupt requests in multiple system processor environments. If you only install one CPU, you do not need to load this daemon.
 
Kdump
Initialize the kdump script
 
Kudzu
The hardware automatic detection program automatically checks whether the hardware has changed and adds or deletes the hardware accordingly. If you do not want to add new hardware, you can close the startup service to speed up the system startup time.
 
ISCSI, iscsid
ISCSI is a SCSI instruction set that is developed by IBM and used by hardware devices on the upper layer of the IP protocol. This instruction set can run on an IP network.
SCSI protocol, enabling it to select routes on high-speed Gigabit Ethernet, for example. ISCSI is a new storage technology that combines existing SCSI interfaces with the Ethernet
The combination of Ethernet technology allows servers to exchange data with storage devices using IP networks.
 
ISDN
You only need to use ISDN to access the Internet.
 
Kudzu
This Service performs hardware detection and configuration. If you change the hardware or need to detect hardware changes, enable it. However, most desktops and servers can be shut down and started only when needed.
 
Lircd
Enables infrared controls through lirc.
 
Lm_sensors
This service can detect the value of the sensor device on the motherboard or the status of specific hardware (usually used in laptops ). You can use it to view the real-time status of your computer and understand its health status. It is in
Gkrellm users are popular. View lm_sensors
Home page for more information. We recommend that you disable it for no special reason.
 
Lvm2-monitor
Monitors logical volumes of the mirror type.
 
Mcstrans
Mainly used for SELinux
 
Mdmonitor
This service is used to monitor software raid or LVM
. It is not a critical service. You can disable it.
 
Mdmpd
This service is used to monitor multi-path
Device (this type of storage device can be accessed by more than one controller or method ). It should be disabled.
 
Messagebus
Event monitoring service sends broadcast information to all users when necessary, such as the server will be restarted.
 
Microcode-CTL
It can encode and send new microcodes to the kernel to update the Intel ia32 series processor daemon.
 
Multipathd
Manage device-mapper multipath Devices
 
Netconsole
Initializes network console logging
 
Netfs
Network filesystem mounter. This process installs and uninstalls NFS, Samba, and NCP network file systems.
 
Netplugd
Nic daemon process. This service monitors the network interface and closes or starts it based on the signal. It is mainly used for laptops that are not frequently connected.
It is used to monitor network interfaces and execute specified commands when the interface status changes. We recommend that you keep the default off status.
 
Network
Activate/disable script programs with configured network interfaces
 
NFS
This is for Unix/Linux/BSD
Standard file sharing methods for operating systems. Disable it unless you want to share data in this way.
 
Nfslock
NFS is a popular protocol for sharing files through TCP/IP networks. This daemon provides the NFS file locking function.
 
Nscd
Password and group Lookup service, which is used to slow down services such as N. I .s/Y. P. NIST, LDAP, and Hesiod. This service is designed to provide longer service interruptions. NIS, NIS +, LDAP, or Hesiod service password control
 
Ntpd
The service automatically updates the system time over the Internet. If you can maintain a permanent internet connection, we recommend that you enable it,
 
Oddjobd
Oddjobd provides a group of privileged operations for privileged applications to complete their actions.
 
Pand
Bluetooth personal Region network, used for network-based home region Bluetooth Technology
 
Pcscd
The Service supports Smart Cards (the same size as small chips embedded in credit cards and identification cards) and smart card readers. If you do not have a card reader device, disable it.
 
Portmap
This daemon is used to support RPC connections. RPC is used for NFS, NIS, and other services.
This service is complementary to NFS (file sharing) and NIS (verification. Unless you use NFS or NIS
Service. Otherwise, disable it.
 
Psacct
Process audit daemon
 
Rdisc
The default route can be used by the rdisc and rdisc daemon.
 
Readahed_early
Readahead_later
This service provides performance by pre-loading specific applications to the memory. If you want the program to start faster, enable it.
 
Restrorecond
Used to monitor SELinux and reload the correct file context (File
Contexts ). It is not necessary, but it is strongly recommended to enable it if you use SELinux.
 
Rpcgssd
Rpcidmapd
Rpcsvcgssd
Used for NFS V4. Disable NFS V4 unless you need it or use it.
 
Saslauthd
Use the SASL authentication daemon.
 
Sendmail
Unless you manage an email server or you want to transmit or support a shared IMAP or pop3 in the LAN
Service. Most people do not need an email transmission proxy. If you use a webpage (Hotmail/Yahoo/Gmail) or a mail sending and receiving program (such as Thunderbird, kmail, Evolution
And so on. You should close it.
 
Setroubleshoot
SELinux troubleshooting
 
Smartd
The smart disk monitoring service is used to monitor and predict disk failures or disk problems (prerequisite: the disk must support smart ). Most desktop users do not need this service, but we recommend that you enable it, especially for servers.
 
Sshd
SSH allows other users to log on to your system and execute programs. The user can be a network or remote user. Enabling it has potential security risks. If you do not need to log on from another machine or remotely, disable it.
 
Syslog
System Logs
 
Winbind
Starts and stops the samba winbind daemon
 
Wpa_supplicant
Wireless Device Support
 
XFS
X Window server daemon provides a font set for local and remote X servers.
 
Xinetd
It is a special service. You can start multiple services based on the requests received by a specific port. For example: Typical
The telnet program is connected to port 23. If a Telent request is sent by xinetd on port 23
Detected, xinetd will start telnetd
Service to respond to this request. You can enable it for ease of use. Run chkconfig -- list and check
The output related to xinetd can be used to know which services are managed by xinetd.
 
Ypbind
Activate the ypbind service process for the NIS (Network Information System) client.
 
Yum-updatesd
The RPM operating system automatically upgrades and software package management daemon.