CentOS6.5 System Service Details

CentOS6.5 System Service Details
CentOS 6.x has a lot more new features than the 5.x series, because the more services are enabled, the less secure the system is. Disable services that do not need to be enabled.
1. The following list shows the system services displayed in CentOS 6. x minimal desktop environment installation. The red font marks the list of services after the system is minimized using the official minimal ISO.Note: NetworkManager is used to automatically connect to the network, it is often used to enable and disable the useless abrt-ccpp function on Laptop to enable the disabled abrt-oops function to enable the disabled abrtd function to detect and manage the useless acpid Power Supply of servers, it is often used to enable custom server useless atd on Laptop to execute commands at a specified time turn off if crond is used, you can disable it auditd audit daemon turn on if selinux is used, you must enable the autofs file system to automatically load and unmount the file system, you can turn off avahi-daemon Local Network Service lookup to turn off useless bluetooth wireless communication to the server turn off useless certmonger turn off cpuspeed adjust cpu speed for power saving, frequently used to enable or disable useless crond scheduled task management on Laptop. enable or disable the cups generic unix Printing Service to disable useless dnsmas on the server. Disable the DNS cache service when qdns cache is disabled. Disable haldaemon hardware information collection after the firstboot system is installed. Enable ip6tablesipv6 firewall and disable ipv6 network, disable iptablesipv4 firewall enable ipv4 Firewall Service irqbalancecpu Server Load balancer enable custom multi-core cup requires kdump hardware change detection disable server useless lvm2-monitorlvm monitoring enable custom if you use LVM logical volume Management enable matahari-broker it is unclear to disable the service, it is not clear that I close matahari-host and close this service. It is not clear that I close matahari-network. It is not clear that I close matahari-service and close this service, it is not clear that I disable matahari-sysconfig and disable this service. I disable mdmonitor soft raid monitoring and enable custom messagebus to take charge of various systems. Enable message transfer between processes. if disabled, haldaemon fails to start. netconsole is disabled. When the netfs system is started, the Network File System is automatically mounted. If nfs is used, activate all network interfaces when the network system is started. enable basic network services. required! The nfs Network File System disables the nfs file service. If used, enable nfslocknfs and disable nfs services, when you use enable ntpdate automatic pair tool close oddjobd and D-BUS close portreserveRPC Service enable custom can close postfix replace sendmail mail server enable custom if no mail service, disable psacct Load detection disable enable quota_nld disable enable qpidd message communication disable rdisc Automatic Detection router disable restorecondselinux disable if selinux is enabled, you need to enable rpcbind to enable critical basic services. Both the nfs service and the desktop environment depend on this service! It is equivalent to the portmap service in CentOS 5.x. Enable or disable NFS-related services for rpcgssdNFS. enable or disable NFS-related services for rpcidmapdRPC name to UID/GID mapper, and disable NFS-related services for rpcsvcgssdNFS, optional. rsyslog provides system logon records to enable key system log services. required! Saslauthdsasl authentication service-related shutdown smartd hard disk Automatic Detection daemon shutdown spice-vdagentd enable sshdssh server, you can provide Secure shell login to enable SSH remote login service, required! Sssd disable sysstat enable a set of system monitoring tools, wdaemon disable wpa_supplicant disable ypbindnetwork information service client disable

2. System Service Management tools:
Chkconfig (available in all linux distributions) is easy to use as follows:
Usage: chkconfig -- list [name]
Chkconfig -- add <name>
Chkconfig -- del <name>
Chkconfig [-- level <levels>] <name> <on | off | reset | resetpriorities>
Ntsysv (exclusive to the Redhat release), runs directly to select whether the service is self-started.
3. view the system service instructions:
In CentOS, these system services are all Shell scripts. You can use the command parameters of rpm to view the description of the corresponding services. For more information about the mysqld service, see:
# Rpm-qi $ (rpm-qf/etc/init. d/mysqld)