In Linux, sysctl allows an administrator to modify kernel parameters at runtime. You can modify interface-level network sysctls using the tuning Container Network Interface (CNI) meta plug-in. The tuning CNI meta plug-in operates in a chain with a main CNI plug-in as illustrated.
The main CNI plug-in assigns the interface and passes this to the tuning CNI meta plug-in at runtime. You can change some sysctls and several interface attributes (promiscuous mode, all-multicast mode, MTU, and MAC address) in the network namespace by using the tuning CNI meta plug-in. In the tuning CNI meta plug-in configuration, the interface name is represented by the IFNAME token, and is replaced with the actual name of the interface at runtime.
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Note
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In {product-title}, the tuning CNI meta plug-in only supports changing interface-level network sysctls. |