Automated cherry pick of #3276: Use iptables-wrapper in Antrea container #3308
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Instead of iptables directly. Antrea uses a Ubuntu 20.04 base container image, for which the default iptables mode is "legacy". This may not match the iptables mode for the Node OS, which in turn can create issues: * Other K8s components (kubelet, kube-proxy) will create rules using the default iptables mode for the Node. Assumptions about evaluation order between these rules and the Antrea rules may break. * The required kernel module for the "legacy" mode (ip_tables) may not be available on the Node. The iptables-wrapper is meant to address these issues: https://github.com/kubernetes-sigs/iptables-wrappers. We install it in the Antrea container image. The first time Antrea invokes iptables, the wrapper will determine the underlying iptables mode (for the Node OS) and adjust the iptables symlinks in the container. Fixes antrea-io#3243 Fixes antrea-io#3274 Signed-off-by: Antonin Bas <abas@vmware.com>
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Codecov Report
@@ Coverage Diff @@
## release-1.5 #3308 +/- ##
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- Coverage 59.49% 52.73% -6.76%
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Files 331 462 +131
Lines 28463 54617 +26154
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+ Hits 16934 28803 +11869
- Misses 9651 23333 +13682
- Partials 1878 2481 +603
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tnqn
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Feb 14, 2022
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/test-all |
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Cherry pick of #3276 on release-1.5.
#3276: Use iptables-wrapper in Antrea container
For details on the cherry pick process, see the cherry pick requests page.