Kernel parameter changes | Release Notes | SUSE Linux Enterprise Server 15 SP3

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Applies to SUSE Linux Enterprise Server 15 SP3

A Kernel parameter changes #

Warning

This list of changes may not be exhaustive.

A.1 During 15 SP3 #

These Linux kernel parameters have been changed during SLES 15 SP3.

Setting	Previous value	New value	Package	More details
`sysctl_net_ipv6_conf_lo_accept_redirects`	0	1	`wicked-0.6.68-150300.4.5.1`	Bug 1181163
`sysctl_net_ipv6_conf_lo_use_tempaddr`	1	-1	`wicked-0.6.68-150300.4.5.1`	Bug 1181163

A.2 Since 15 SP2 #

These Linux kernel parameters have been changed since SLES 15 SP2.

Setting	Previous value	New value	Package	More details
`sysctl_fs_file-max`	490215	9223372036854775807		Bug 1180823
`sysctl_fs_suid_dumpable`	0	2	systemd 246	Bug 1183339
`sysctl_kernel_cap_last_cap`	37	39		Bug 1183339
`sysctl_kernel_core_pattern`	\|/usr/lib/systemd/systemd-coredump %P %u %g %s %t %c %e	\|/usr/lib/systemd/systemd-coredump %P %u %g %s %t %c %h		Bug 1183450
`sysctl_kernel_core_pipe_limit`	0	16		Bug 1183450
`sysctl_kernel_printk_devkmsg`	ratelimit	on	systemd 248	Bug 1183339
`sysctl_kernel_suid_dumpable`	0	2	systemd 246	Bug 1183450
`sysctl_kernel_usermodehelper_bset`	63	255		Bug 1183339
`sysctl_kernel_usermodehelper_inheritable`	63	255		Bug 1183339
`sysctl_net_core_bpf_jit_kallsyms`	0	1		Bug 1183339
`sysctl_net_ipv4_ping_group_range`	1 0	0 2147483647 ^[a]
`sysctl_net_ipv4_tcp_available_ulp`	''	espintcp		Bug 1181745
`sysctl_net_ipv4_tcp_mem`	22689 30255 45378	22683 30246 45366 ^[b]		Bug 1183339
`sysctl_net_ipv4_udp_mem`	45381 60510 90762	45369 60492 90738		Bug 1183339
`sysctl_fs_epoll_max_user_watches`	410398	410275 ^[b]		Bug 1183339
`sysctl_kernel_threads-max`	15650	15655 ^[b]		Bug 1183339
`sysctl_user_max_cgroup_namespaces`	7827	7825 ^[b]		Bug 1183339
`sysctl_user_max_ipc_namespaces`	7827	7825 ^[b]		Bug 1183339
`sysctl_user_max_mnt_namespaces`	7827	7825 ^[b]		Bug 1183339
`sysctl_user_max_net_namespaces`	7827	7825 ^[b]		Bug 1183339
`sysctl_user_max_pid_namespaces`	7827	7825 ^[b]		Bug 1183339
`sysctl_user_max_time_namespaces`	7827	7825 ^[b]		Bug 1183339
`sysctl_user_max_user_namespaces`	7827	7825 ^[b]		Bug 1183339
`sysctl_user_max_uts_namespaces`	7827	7825 ^[b]		Bug 1183339
^[a]Also see Section 5.8.3, “All users can now create ICMP Echo sockets”. ^[b]All `sysctl` parameters based on the total amount of memory or available memory can vary between service packs or even maintenance updates. Small variations are to be expected. Either the accounting might have changed for the former, or more early allocations are necessary for the latter.

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