linux7自动启动服务,centos 7 开机启动服务项优化

1.

使用 systemctl list-unit-files 可以查看启动项

systemctl list-unit-files | grep enable 过滤查看启动项如下

abrt-ccpp.service                                enabled abrt为auto bug report的缩写 用于bug报告 关闭

abrt-oops.service                                enabled ----------------------

abrt-vmcore.service                              enabled ----------------------

abrt-xorg.service                                enabled ----------------------

abrtd.service                                      enabled   ----------------------

auditd.service                                   enabled 安全审计 保留

[email protected]                               enabled 登陆相关 保留

crond.service                                          enabled 定时任务 保留

dbus-org.freedesktop.NetworkManager.service    enabled 桌面网卡管理 关闭

dbus-org.freedesktop.nm-dispatcher.service         enabled ----------------------

[email protected]                                enabled tty控制台相关 保留

irqbalance.service                          enabled 优化系统中断分配 保留

kdump.service                                enabled 内核崩溃信息捕获 自定

microcode.service                        enabled 处理器稳定性增强 保留

NetworkManager-dispatcher.service              enabled 网卡守护进程 关闭

NetworkManager.service                        enabled ----------------------

postfix.service                            enabled 邮件服务 关闭

rsyslog.service                              enabled 日志服务 保留

snmpd.service                                enabled snmp监控 数据抓取 保留

sshd.service                                  enabled ssh登陆 保留

systemd-readahead-collect.service             enabled 内核调用--预读取 保留

systemd-readahead-drop.service                enabled ----------------------

systemd-readahead-replay.service              enabled ----------------------

tuned.service                                     enabled

default.target                                 enabled 默认启动项 multi-user.target的软连接 保留

multi-user.target                             enabled 启动用户命令环境 保留

remote-fs.target                               enabled 集合远程文件挂载点 自定

runlevel2.target                              enabled 运行级别 用于兼容6的SysV 保留

runlevel3.target                              enabled ----------------------

runlevel4.target                              enabled ----------------------

关闭一下开机启动服务

systemctl disable abrt-ccpp.service

systemctl disable abrt-oops.service

systemctl disable abrt-vmcore.service

systemctl disable abrt-xorg.service

systemctl disable abrtd.service

systemctl disable accounts-daemon.service

systemctl disable atd.service

systemctl disable auditd.service

systemctl disable [email protected]

systemctl disable avahi-daemon.service

systemctl disable bluetooth.service

systemctl disable cups.service

systemctl disable dbus-org.bluez.service

systemctl disable dbus-org.fedoraproject.FirewallD1.service

systemctl disable dbus-org.freedesktop.Avahi.service

systemctl disable dbus-org.freedesktop.ModemManager1.service

systemctl disable dbus-org.freedesktop.NetworkManager.service

systemctl disable dbus-org.freedesktop.nm-dispatcher.service

systemctl disable display-manager.service

systemctl disable dmraid-activation.service

systemctl disable firewalld.service

systemctl disable gdm.service

systemctl disable irqbalance.service

systemctl disable iscsi.service

systemctl disable ksm.service

systemctl disable ksmtuned.service

systemctl disable libstoragemgmt.service

systemctl disable libvirtd.service

systemctl disable lvm2-monitor.service

systemctl disable mcelog.service

systemctl disable mdmonitor.service

systemctl disable microcode.service

systemctl disable ModemManager.service

systemctl disable multipathd.service

systemctl disable NetworkManager-dispatcher.service

systemctl disable NetworkManager.service

systemctl disable postfix.service

systemctl disable qemu-guest-agent.service

systemctl disable rngd.service

systemctl disable rtkit-daemon.service

systemctl disable smartd.service

systemctl disable spice-vdagentd.service

systemctl disable systemd-readahead-collect.service

systemctl disable systemd-readahead-drop.service

systemctl disable systemd-readahead-replay.service

systemctl disable tuned.service

systemctl disable vgauthd.service

systemctl disable vmtoolsd.service

2.systemctl 用法：

显示服务状态：systemctl status docker.service

列出服务层级和依赖关系：systemctl list-dependencies docker.service

启动服务：systemctl start docker.service

关闭服务：systemctl stop docker.service

重启服务：systemctl restart docker.service

设置服务自启动：systemctl enable docker.service

禁止服务自启动：systemctl disable docker.service

查看服务是否自启动：systemctl is-enabled docker.service

列出系统所有服务的启动情况：systemctl list-units --type=service

列出所有自启动服务：systemctl list-unit-files|grep enabled

对应的旧指令(chkconfig、service)

显示服务状态：service docker status

列出服务层级和依赖关系：systemctl list-dependencies docker.service

启动服务：service docker start 关闭服务：service docker stop 重启服务：service docker restart 设置服务自启动：chkconfig --level 3 docker on 禁止服务自启动：chkconfig --level 3 docker off 查看服务是否自启动：chkconfig --list docker 列出系统所有服务的启动情况：chkconfig --list