linux sysctl参数配置详细介绍
<p><strong>linux sysctl参数配置</strong></p>
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步骤及实现：</p>
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<code class="bash functions">sudo</code> <code class="bash functions">vi</code> <code class="bash plain">/etc/sysctl</code><code class="bash plain">.conf</code>
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代码：</p>
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<code class="bash comments"># Kernel sysctl configuration file for Red Hat Linux</code>
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<code class="bash comments">#</code>
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<code class="bash comments"># For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and</code>
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<code class="bash comments"># sysctl.conf(5) for more details.</code>
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<code class="bash comments"># Controls the System Request debugging functionality of the kernel</code>
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<code class="bash plain">kernel.sysrq = 1</code>
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<code class="bash comments"># Controls whether core dumps will append the PID to the core filename</code>
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<code class="bash comments"># Useful for debugging multi-threaded applications</code>
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<code class="bash plain">kernel.core_uses_pid = 1</code>
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<code class="bash comments"># Controls the maximum size of a message, in bytes</code>
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<code class="bash plain">kernel.msgmnb = 65536</code>
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<code class="bash comments"># Controls the default maxmimum size of a mesage queue</code>
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<code class="bash plain">kernel.msgmax = 65536</code>
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<code class="bash comments"># Controls the maximum shared segment size, in bytes</code>
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<code class="bash plain">kernel.shmmax = 68719476736</code>
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<code class="bash comments"># Controls the maximum number of shared memory segments, in pages</code>
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<code class="bash plain">kernel.shmall = 4294967296</code>
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<code class="bash comments"># Controls IP packet forwarding</code>
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<code class="bash plain">net.ipv4.ip_forward = 0</code>
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<code class="bash comments"># Controls source route verification</code>
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<code class="bash plain">net.ipv4.conf.default.rp_filter = 1</code>
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<code class="bash comments"># Do not accept source routing</code>
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<code class="bash plain">net.ipv4.conf.default.accept_source_route = 0</code>
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<code class="bash comments"># Controls the use of TCP syncookies</code>
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<code class="bash plain">net.ipv4.tcp_syncookies = 1</code>
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<code class="bash plain">net.core.somaxconn = 10240</code>
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<code class="bash plain">net.ipv4.tcp_tw_reuse = 1</code>
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<code class="bash plain">net.ipv4.tcp_tw_recycle = 1</code>
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<code class="bash plain">net.ipv4.tcp_fin_timeout = 30</code>
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<code class="bash plain">net.ipv4.tcp_keepalive_time = 300</code>
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<code class="bash plain">net.ipv4.tcp_synack_retries = 3</code>
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<code class="bash plain">net.ipv4.tcp_syn_retries = 3</code>
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<code class="bash plain">net.core.rmem_max = 16777216</code>
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<code class="bash plain">net.core.wmem_max = 16777216</code>
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<code class="bash plain">net.ipv4.tcp_rmem = 4096 87380 16777216</code>
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<code class="bash plain">net.ipv4.tcp_wmem = 4096 65536 16777216</code>
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<code class="bash plain">net.ipv4.tcp_no_metrics_save = 0</code>
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<code class="bash plain">net.core.netdev_max_backlog = 2500</code>
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<code class="bash plain">net.ipv4.tcp_max_syn_backlog = 4196</code>
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<code class="bash plain">net.ipv6.conf.all.disable_ipv6 = 1</code>
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<code class="bash plain">net.ipv6.conf.default.disable_ipv6 = 1</code>
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<code class="bash spaces"> </code>
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<code class="bash plain">xen.independent_wallclock = 1</code>
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重启,使修改生效</p>
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<code class="bash functions">sudo</code> <code class="bash plain">sysctl -p </code>
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感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！</p>
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原文链接：http://asflex.iteye.com/blog/1969873</p>
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