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.

Parameter	Value in 15 SP2	Value in 15 SP3	Caused by package
`sysctl_net_ipv6_conf_lo_accept_redirects`	0	1	`wicked-0.6.68-150300.4.5.1.x86_64.rpm`
`sysctl_net_ipv6_conf_lo_use_tempaddr`	1	-1	`wicked-0.6.68-150300.4.5.1.x86_64.rpm`
`sysctl_net_ipv4_udp_mem`	44800:46000 60000:61000 90000:91500	45000:47000 60000:62000 90000:93000	`systemd-234-24.105.1.x86_64.rpm`

A.2 Since 15 SP2 #

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

Parameter	Value in 15 SP2	Value in 15 SP3
`sysctl_fs_file-max`	490215	9223372036854775807
`sysctl_fs_suid_dumpable`	0	2
`sysctl_kernel_cap_last_cap`	37	39
`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
`sysctl_kernel_core_pipe_limit`	0	16
`sysctl_kernel_printk_devkmsg`	ratelimit	on
`sysctl_kernel_suid_dumpable`	0	2
`sysctl_kernel_usermodehelper_bset`	63	255
`sysctl_kernel_usermodehelper_inheritable`	63	255
`sysctl_net_core_bpf_jit_kallsyms`	0	1
`sysctl_net_ipv4_ping_group_range`	1 0	0 2147483647 ^[a]
`sysctl_net_ipv4_tcp_available_ulp`	''	espintcp
`sysctl_net_ipv4_tcp_mem`	22689 30255 45378	22683 30246 45366 ^[b]
`sysctl_fs_epoll_max_user_watches`	410398	410275 ^[b]
`sysctl_kernel_threads-max`	15650	15655 ^[b]
`sysctl_user_max_cgroup_namespaces`	7827	7825 ^[b]
`sysctl_user_max_ipc_namespaces`	7827	7825 ^[b]
`sysctl_user_max_mnt_namespaces`	7827	7825 ^[b]
`sysctl_user_max_net_namespaces`	7827	7825 ^[b]
`sysctl_user_max_pid_namespaces`	7827	7825 ^[b]
`sysctl_user_max_time_namespaces`	7827	7825 ^[b]
`sysctl_user_max_user_namespaces`	7827	7825 ^[b]
`sysctl_user_max_uts_namespaces`	7827	7825 ^[b]
^[a]Also see Section 5.8.1, “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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