# 云盾（AliYunDun、AliYunDunMonitor）
https://help.aliyun.com/zh/security-center/user-guide/uninstall-the-security-center-agent#section-wfc-zqf-pgb
在主机资产页面该服务器基本信息页签的防御状态区域关闭「客户端自保护」和「恶意主机行为防御」
然后在 云安全中心控制台 -> 系统配置 > 功能设置 -> 客户端 -> 卸载，找到对应的主机完成卸载。
# 云助手（aliyun-assist）
https://help.aliyun.com/zh/ecs/user-guide/start-stop-or-uninstall-the-cloud-assistant-agent
/usr/local/share/assist-daemon/assist_daemon --stop
/usr/local/share/assist-daemon/assist_daemon --delete
ps x | grep aliyun-service
kill $PID
rm -rf /usr/local/share/assist-daemon
rm -rf /usr/local/share/aliyun-assist
/usr/local/share/assist-daemon/assist_daemon --delete
ps x | grep aliyun-service
kill $PID
rm -rf /usr/local/share/assist-daemon
rm -rf /usr/local/share/aliyun-assist
# 云监控（cloudmonitor）
https://help.aliyun.com/zh/cms/cloudmonitor-1-0/user-guide/install-and-uninstall-the-cloudmonitor-agent-for-cpp#section-hdw-doi-fv4
bash /usr/local/cloudmonitor/cloudmonitorCtl.sh stop
bash /usr/local/cloudmonitor/cloudmonitorCtl.sh uninstall
rm -rf /usr/local/cloudmonitor
bash /usr/local/cloudmonitor/cloudmonitorCtl.sh uninstall
rm -rf /usr/local/cloudmonitor
06-30 update
aliyun 的默认 ubuntu 发行版还自动启用了一些非常占内存的服务，可能会导致小内存实例 OOM，需要禁用：
systemctl stop tuned multipathd.service multipathd.socket fwupd fwupd-refresh fwupd-refresh.timer apt-daily.timer apt-daily-upgrade.timer
systemctl disable tuned multipathd.service multipathd.socket fwupd fwupd-refresh fwupd-refresh.timer apt-daily.timer apt-daily-upgrade.timer
systemctl disable tuned multipathd.service multipathd.socket fwupd fwupd-refresh fwupd-refresh.timer apt-daily.timer apt-daily-upgrade.timer