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< h1 id = "sysctl-tuning" > Sysctl tuning< a class = "headerlink" href = "#sysctl-tuning" title = "Permanent link" > ¶< / a > < / h1 >
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< p > This example aims to demonstrate the use of an Init Container to adjust sysctl default values using < code > kubectl patch< / code > < / p >
< div class = "highlight" > < pre > < span > < / span > < code > < span class = "go" > kubectl patch deployment -n ingress-nginx nginx-ingress-controller \< / span >
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< span class = "go" > --patch=" $(curl https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/docs/examples/customization/sysctl/patch.json)" < / span >
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< / code > < / pre > < / div >
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< p > < strong > Changes:< / strong > < / p >
< ul >
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< li > Backlog Queue setting < code > net.core.somaxconn< / code > from < code > 128< / code > to < code > 32768< / code > < / li >
< li > Ephemeral Ports setting < code > net.ipv4.ip_local_port_range< / code > from < code > 32768 60999< / code > to < code > 1024 65000< / code > < / li >
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< / ul >
< p > In a < a href = "https://www.nginx.com/blog/tuning-nginx/" > post from the NGINX blog< / a > , it is possible to see an explanation for the changes.< / p >
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