I'm attempting to update the /var/lib/kubelet/config.yaml as well as the /etc/kubernetes/manifests/kube-apiserver.yaml manifest to mitigate the SWEET32 vulnerability. From reading the documents and various other pages it appears that updating the files with tls cipher suite list should correct the issue however whenever I make the change on the api-server.yaml file the api-server container never comes up after a kubelet restart.

How should this update be done? via yaml file editing or is there a command line config?

config.yaml has the following appended to the file:

tlsCipherSuites: ["TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256","TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256","TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305","TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384","TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305","TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384","TLS_RSA_WITH_AES_256_GCM_SHA384","TLS_RSA_WITH_AES_128_GCM_SHA256"]

The kube-apiserver.yaml file is updated with: spec: containers:

command:

    - --tls-cipher-suites=TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA256,TLS_RSA_WITH_AES_128_GCM_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_256_GCM_SHA384