红帽全球峰会16.3. 禁用 kdump 服务
您可以在 Red Hat Enterprise Linux 系统上停止 kdump.service，并禁止该服务启动。
先决条件
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满足
kdump配置和目标的要求。详情请查看支持的 kdump 配置和目标。
流程
要在当前会话中停止
kdump服务：systemctl stop kdump.service
# systemctl stop kdump.serviceCopy to Clipboard Copied! Toggle word wrap Toggle overflow 要禁用
kdump服务：systemctl disable kdump.service
# systemctl disable kdump.serviceCopy to Clipboard Copied! Toggle word wrap Toggle overflow
警告
您必须将 kptr_restrict=1 设置为默认。当将 kptr_restrict 设置为(1)作为默认值时，kdumpctl 服务会加载崩溃内核，而无论是否启用了内核地址空间布局(KASLR)。
如果 kptr_restrict 没有设置为 1，且 KASLR 被启用了，则 /proc/kore 文件的内容被生成为全零。kdumpctl 服务无法访问 /proc/kcore 文件，并加载崩溃内核。kexec-kdump-howto.txt 文件会显示一条警告信息，其建议您设置 kptr_restrict=1。验证 sysctl.conf 文件中的以下内容，以确保 kdumpctl 服务加载崩溃内核：
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sysctl.conf文件中的内核kptr_restrict=1。
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