TMA-ROS1-2.2.1.1

Ensure time synchronization is in use

中级别 1自动化ros

说明

System time should be synchronized between all systems in an environment. This is typically done by establishing an authoritative time server or set of servers and having all systems synchronize their clocks to them. The audit requires systemd-timesyncd enabled or the chrony or ntp package installed (host-based VM time sync must be verified manually). Host-level control from the CIS ROS Melodic benchmark (Ubuntu 18.04 robot hosts); run as root.

检查方式

审计方法: Shell 命令

shell

s=$(systemctl is-enabled systemd-timesyncd 2>/dev/null)
[ "$s" = enabled ] && { echo compliant; exit 0; }
command -v dpkg-query >/dev/null 2>&1 || exit 1
for p in chrony ntp; do s=$(dpkg-query -W -f='${Status}' "$p" 2>/dev/null); case "$s" in *' installed') echo compliant; exit 0 ;; esac; done
echo 'no time synchronization (systemd-timesyncd, chrony or ntp) in use'

预期输出: compliant

修复方式

修复方法: 操作指南或基础设施补丁

On systems where host based time synchronization is not available, configure systemd- timesyncd. If "full featured" and/or encrypted time synchronization is required, install chrony or NTP. To install chrony: # atp install chrony To install ntp: # apt install ntp On virtual systems where host based time synchronization is available consult your virtualization software documentation and setup host based synchronization.

属性

操作系统: 任意
标签: rosros1melodicservices
参考: CIS ROS Melodic Benchmark v1.0.0 - 2.2.1.1 Ensure time synchronization is in use

检查本机

请在您有权审计的机器上运行此命令。扫描为只读操作。

shell

tmaegis scan --target ros