73 lines
1.9 KiB
Plaintext
73 lines
1.9 KiB
Plaintext
cat << EOF > /etc/sysctl.conf
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#raw
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# Kernel sysctl configuration file for Red Hat Linux
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#
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# For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and
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# sysctl.conf(5) for more details.
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# Controls IP packet forwarding
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net.ipv4.ip_forward = 0
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# Controls source route verification
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net.ipv4.conf.default.rp_filter = 1
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# Do not accept source routing
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net.ipv4.conf.default.accept_source_route = 0
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# Controls the System Request debugging functionality of the kernel
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kernel.sysrq = 0
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# Controls whether core dumps will append the PID to the core filename.
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# Useful for debugging multi-threaded applications.
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kernel.core_uses_pid = 1
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# Controls the use of TCP syncookies
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net.ipv4.tcp_syncookies = 1
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# Controls the default maxmimum size of a mesage queue
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kernel.msgmnb = 65536
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# Controls the maximum size of a message, in bytes
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kernel.msgmax = 65536
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# Controls the maximum shared segment size, in bytes
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kernel.shmmax = 68719476736
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# Controls the maximum number of shared memory segments, in pages
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kernel.shmall = 4294967296
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# increase TCP max buffer size settable using setsockopt()
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net.core.rmem_max = 16777216
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net.core.wmem_max = 16777216
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# increase Linux autotuning TCP buffer limit
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net.ipv4.tcp_rmem = 4096 87380 16777216
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net.ipv4.tcp_wmem = 4096 65536 16777216
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# increase the length of the processor input queue
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net.core.netdev_max_backlog = 30000
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net.ipv4.tcp_max_syn_backlog = 4096
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# recommended default congestion control is htcp
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net.ipv4.tcp_congestion_control=htcp
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# recommended for hosts with jumbo frames enabled
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net.ipv4.tcp_mtu_probing=1
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# increase client parallel connections
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net.ipv4.ip_local_port_range = 15000 61000
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net.ipv4.tcp_fin_timeout=30
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# fast cycling of sockets in time_wait state and re-using them
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net.ipv4.tcp_tw_recycle = 1
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net.ipv4.tcp_tw_reuse = 1
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# increase the maximum number of requests queued to a listen socket
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net.core.somaxconn = 8192
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# avoid caching tcp network transfer statistics
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net.ipv4.route.flush=1
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#end raw
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EOF
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sysctl -p
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