100 lines
3.3 KiB
Plaintext
100 lines
3.3 KiB
Plaintext
# This configuration file is taken from Debian.
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#
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# /etc/sysctl.conf - Configuration file for setting system variables
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# See sysctl.conf (5) for information.
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#
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#kernel.domainname = example.com
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# Uncomment the following to stop low-level messages on console
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kernel.printk = 4 4 1 7
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# Reboot X seconds after a kernel panic
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kernel.panic = 5
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##############################################################3
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# Functions previously found in netbase
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#
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# Uncomment the next two lines to enable Spoof protection (reverse-path filter)
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# Turn on Source Address Verification in all interfaces to
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# prevent some spoofing attacks
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net.ipv4.conf.default.rp_filter=1
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net.ipv4.conf.all.rp_filter=1
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# Uncomment the next line to enable TCP/IP SYN cookies
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#net.ipv4.tcp_syncookies=1
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# Uncomment the next line to enable packet forwarding for IPv4
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#net.ipv4.ip_forward=1
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# Uncomment the next line to enable packet forwarding for IPv6
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#net.ipv6.conf.all.forwarding=1
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###################################################################
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# Additional settings - these settings can improve the network
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# security of the host and prevent against some network attacks
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# including spoofing attacks and man in the middle attacks through
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# redirection. Some network environments, however, require that these
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# settings are disabled so review and enable them as needed.
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#
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# Ignore ICMP broadcasts
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#net.ipv4.icmp_echo_ignore_broadcasts = 1
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#
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# Ignore bogus ICMP errors
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#net.ipv4.icmp_ignore_bogus_error_responses = 1
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#
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# Do not accept ICMP redirects (prevent MITM attacks)
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#net.ipv4.conf.all.accept_redirects = 0
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#net.ipv6.conf.all.accept_redirects = 0
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# _or_
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# Accept ICMP redirects only for gateways listed in our default
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# gateway list (enabled by default)
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# net.ipv4.conf.all.secure_redirects = 1
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#
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# Do not send ICMP redirects (we are not a router)
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#net.ipv4.conf.all.send_redirects = 0
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#
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# Do not accept IP source route packets (we are not a router)
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#net.ipv4.conf.all.accept_source_route = 0
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#net.ipv6.conf.all.accept_source_route = 0
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#
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# Log Martian Packets
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#net.ipv4.conf.all.log_martians = 1
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#
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#kernel.shmmax = 141762560
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# WRL
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# set max socket memory ; default was 212992
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net.core.rmem_max=425984
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# WRS
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# The following kernel parameters help alleviate some RabbitMQ
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# connection issues. These values need to be set here to ensure sysinv-agent
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# remains connected to rabbitmq. Sysinv-agent starts before packstack and the
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# long default values allowed the connection to be lost for 2 hours.
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# Note the ipv4 vlaues are also applied to ipv6 connections.
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net.ipv4.tcp_keepalive_intvl = 1
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net.ipv4.tcp_keepalive_probes = 5
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net.ipv4.tcp_keepalive_time = 5
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# This controls the tcp connection retries.
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# The default results in a delay of ~15 minutes before dead connections
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# to the floating ip are detected after a swact.
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# Reduce this delay to 8 shortens this to ~100 seconds.
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net.ipv4.tcp_retries2 = 8
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# Reserve ports in the ephemeral port range:
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#
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# Incorporate the reserved keystone port (35357) from
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# /usr/lib/sysctl.d/openstack-keystone.conf
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#
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# Helm v2.13.1 hardcodes the following Tiller ports when installed in the
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# k8s cluster: 44134 (server), 44135 (probe), 44136 (trace). Reserve them
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# from the ephemeral port range. This will avoid potential port conflicts
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# that will cause the tiller pod to crash when the port is assigned to
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# another client/server
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net.ipv4.ip_local_reserved_ports=35357,44134-44136
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