ubuntu22.04.4锁定内核应对海光服务器升级内核无法启动问题

文章目录

• 一、场景
• 二、机器信息
• • 1.内核信息
  • 2.CPU信息
• 三、锁定内核
• 总结

ubuntu锁定内核的操作记录

一、场景

项目上来了几台海光的服务器，操作系统是ubuntu2204的，就尝试这安装服务，发现安装的时候内核会自动升级，升级之后新内核无法正常引导启动。进行锁内核的操作。

二、机器信息

1.内核信息

hostnamectl ：

 Static hostname: XXX Icon name: computer-server Chassis: server Machine ID: cd19257cdbca45849b97eabbb12b8de5 Boot ID: 4ded862beb7045c79d82c885114d4aabOperating System: Ubuntu 22.04.4 LTS Kernel: Linux 5.15.0-94-generic Architecture: x86-64 Hardware Vendor: Suma Hardware Model: R6240H0

2.CPU信息

lscpu:

Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Address sizes: 48 bits physical, 48 bits virtual Byte Order: Little EndianCPU(s):  64 On-line CPU(s) list: 0-63Vendor ID:  HygonGenuine Model name: Hygon C86 7380 32-core Processor CPU family: 24 Model:  2 Thread(s) per core: 2 Core(s) per socket: 32 Socket(s):  1 Stepping: 2 BogoMIPS: 4400.19 Flags:  fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid amd_dcm aperfmperf r apl pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb hw_pstate ssbd ibpb vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx smap clflushopt sha_ni xsaveopt xsavec xgetbv1 xsaves clzero irperf xsaveerptr arat npt lbrv svm_lock nrip_save tsc_scale vmc b_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif overflow_recov succor smca sme sev sev_esVirtualization features: Virtualization: AMD-V

三、锁定内核

编辑/etc/default/grub文件
修改前

GRUB_DEFAULT=0GRUB_TIMEOUT_STYLE=hiddenGRUB_TIMEOUT=0GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`GRUB_CMDLINE_LINUX_DEFAULT=\"\"GRUB_CMDLINE_LINUX=\"\"

修改GRUB_DEFAULT锁定当前内核

GRUB_DEFAULT=\"Advanced options for Ubuntu>Ubuntu, with Linux 5.15.0-94-generic\"GRUB_TIMEOUT_STYLE=hiddenGRUB_TIMEOUT=0GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`GRUB_CMDLINE_LINUX_DEFAULT=\"\"GRUB_CMDLINE_LINUX=\"\"

更新grub信息

update-grub

总结

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