# sysstat-install.sh
yum install sysstat -y
systemctl enable --now sysstat
 
mkdir -p /etc/systemd/system/sysstat-collect.timer.d

# 每10s触发一次采集
tee /etc/systemd/system/sysstat-collect.timer.d/override.conf > /dev/null <<'EOF'
[Timer]
OnCalendar=*:*:00/10
AccuracySec=1s
EOF

# 保存三天的记录
sed -i 's/^HISTORY=[0-9]*/HISTORY=3/' /etc/sysconfig/sysstat

systemctl daemon-reload
systemctl restart sysstat-collect.timer

echo "-----OK OK OK----"
echo "-----view today sysstat----"
echo "sar -u -f /var/log/sa/sa$(date +%d)"

# 赋予执行权限
chmod +x sysstat-install.sh

# 执行安装和配置脚本
./sysstat-install.sh

# 查看今日的性能趋势变化
sar -u -f /var/log/sa/sa$(date +%d)