Linux7 系统最小化服务启动服务：
    autovt@.service
    crond.service
    getty@.service
    irqbalance.service
    kdump.service
    auditd.service
    microcode.service
    rsyslog.service
    sshd.service
    sysstat.service
    systemd-readahead-collect.service
    systemd-readahead-drop.service
    systemd-readahead-replay.service
    NetworkManager.service
    tuned.service
    lvm2-lvmetad.socket
    lvm2-lvmpolld.socket
    default.target
    华为云平台服务：
    cloud-init-local.service
    cloud-init.service
    cloud-init.target
    cloud-final.service
    vm-agent.service