|
| 1 | +package openshiftkubeapiserver |
| 2 | + |
| 3 | +import ( |
| 4 | + "fmt" |
| 5 | + "net" |
| 6 | + "sort" |
| 7 | + |
| 8 | + "io/ioutil" |
| 9 | + |
| 10 | + "bytes" |
| 11 | + |
| 12 | + configapi "github.com/openshift/origin/pkg/cmd/server/apis/config" |
| 13 | + configapilatest "github.com/openshift/origin/pkg/cmd/server/apis/config/latest" |
| 14 | + originadmission "github.com/openshift/origin/pkg/cmd/server/origin/admission" |
| 15 | + "k8s.io/apimachinery/pkg/runtime" |
| 16 | +) |
| 17 | + |
| 18 | +func ConfigToFlags(kubeAPIServerConfig *configapi.MasterConfig) ([]string, error) { |
| 19 | + args := map[string][]string{} |
| 20 | + for key, slice := range kubeAPIServerConfig.KubernetesMasterConfig.APIServerArguments { |
| 21 | + for _, val := range slice { |
| 22 | + args[key] = append(args[key], val) |
| 23 | + } |
| 24 | + } |
| 25 | + |
| 26 | + host, portString, err := net.SplitHostPort(kubeAPIServerConfig.ServingInfo.BindAddress) |
| 27 | + if err != nil { |
| 28 | + return nil, err |
| 29 | + } |
| 30 | + |
| 31 | + // these flags are overridden by a patch |
| 32 | + // admission-control |
| 33 | + // authentication-token-webhook-cache-ttl |
| 34 | + // authentication-token-webhook-config-file |
| 35 | + // authorization-mode |
| 36 | + // authorization-policy-file |
| 37 | + // authorization-webhook-cache-authorized-ttl |
| 38 | + // authorization-webhook-cache-unauthorized-ttl |
| 39 | + // authorization-webhook-config-file |
| 40 | + // basic-auth-file |
| 41 | + // enable-aggregator-routing |
| 42 | + // enable-bootstrap-token-auth |
| 43 | + // oidc-client-id |
| 44 | + // oidc-groups-claim |
| 45 | + // oidc-groups-prefix |
| 46 | + // oidc-issuer-url |
| 47 | + // oidc-required-claim |
| 48 | + // oidc-signing-algs |
| 49 | + // oidc-username-claim |
| 50 | + // oidc-username-prefix |
| 51 | + // service-account-lookup |
| 52 | + // token-auth-file |
| 53 | + |
| 54 | + // alsologtostderr - don't know whether to change it |
| 55 | + // apiserver-count - ignored, hopefully we don't have to fix via patch |
| 56 | + // cert-dir - ignored because we set certs |
| 57 | + |
| 58 | + // these flags were never supported via config |
| 59 | + // cloud-config |
| 60 | + // cloud-provider |
| 61 | + // cloud-provider-gce-lb-src-cidrs |
| 62 | + // contention-profiling |
| 63 | + // default-not-ready-toleration-seconds |
| 64 | + // default-unreachable-toleration-seconds |
| 65 | + // default-watch-cache-size |
| 66 | + // delete-collection-workers |
| 67 | + // deserialization-cache-size |
| 68 | + // enable-garbage-collector |
| 69 | + // etcd-compaction-interval |
| 70 | + // etcd-count-metric-poll-period |
| 71 | + // etcd-servers-overrides |
| 72 | + // experimental-encryption-provider-config |
| 73 | + // feature-gates |
| 74 | + // http2-max-streams-per-connection |
| 75 | + // insecure-bind-address |
| 76 | + // kubelet-timeout |
| 77 | + // log-backtrace-at |
| 78 | + // log-dir |
| 79 | + // log-flush-frequency |
| 80 | + // logtostderr |
| 81 | + // master-service-namespace |
| 82 | + // max-connection-bytes-per-sec |
| 83 | + // profiling |
| 84 | + // request-timeout |
| 85 | + // runtime-config |
| 86 | + // service-account-api-audiences |
| 87 | + // service-account-issuer |
| 88 | + // service-account-key-file |
| 89 | + // service-account-max-token-expiration |
| 90 | + // service-account-signing-key-file |
| 91 | + // stderrthreshold |
| 92 | + // storage-versions |
| 93 | + // target-ram-mb |
| 94 | + // v |
| 95 | + // version |
| 96 | + // vmodule |
| 97 | + // watch-cache |
| 98 | + // watch-cache-sizes |
| 99 | + |
| 100 | + // TODO, we need to set these in order to enable the right admission plugins in each of the servers |
| 101 | + // TODO this is needed for a viable cluster up |
| 102 | + admissionFlags, err := admissionFlags(kubeAPIServerConfig) |
| 103 | + if err != nil { |
| 104 | + return nil, err |
| 105 | + } |
| 106 | + for flag, value := range admissionFlags { |
| 107 | + setIfUnset(args, flag, value...) |
| 108 | + } |
| 109 | + setIfUnset(args, "allow-privileged", "true") |
| 110 | + setIfUnset(args, "anonymous-auth", "false") |
| 111 | + setIfUnset(args, "authorization-mode", "RBAC", "Node") // overridden later, but this runs the poststarthook for bootstrapping RBAC |
| 112 | + for flag, value := range auditFlags(kubeAPIServerConfig) { |
| 113 | + setIfUnset(args, flag, value...) |
| 114 | + } |
| 115 | + setIfUnset(args, "bind-address", host) |
| 116 | + setIfUnset(args, "client-ca-file", kubeAPIServerConfig.ServingInfo.ClientCA) |
| 117 | + setIfUnset(args, "cors-allowed-origins", kubeAPIServerConfig.CORSAllowedOrigins...) |
| 118 | + setIfUnset(args, "enable-logs-handler", "false") |
| 119 | + setIfUnset(args, "enable-swagger-ui", "true") |
| 120 | + setIfUnset(args, "endpoint-reconciler-type", "lease") |
| 121 | + setIfUnset(args, "etcd-cafile", kubeAPIServerConfig.EtcdClientInfo.CA) |
| 122 | + setIfUnset(args, "etcd-certfile", kubeAPIServerConfig.EtcdClientInfo.ClientCert.CertFile) |
| 123 | + setIfUnset(args, "etcd-keyfile", kubeAPIServerConfig.EtcdClientInfo.ClientCert.KeyFile) |
| 124 | + setIfUnset(args, "etcd-prefix", kubeAPIServerConfig.EtcdStorageConfig.KubernetesStoragePrefix) |
| 125 | + setIfUnset(args, "etcd-servers", kubeAPIServerConfig.EtcdClientInfo.URLs...) |
| 126 | + setIfUnset(args, "insecure-port", "0") |
| 127 | + setIfUnset(args, "kubelet-certificate-authority", kubeAPIServerConfig.KubeletClientInfo.CA) |
| 128 | + setIfUnset(args, "kubelet-client-certificate", kubeAPIServerConfig.KubeletClientInfo.ClientCert.CertFile) |
| 129 | + setIfUnset(args, "kubelet-client-key", kubeAPIServerConfig.KubeletClientInfo.ClientCert.KeyFile) |
| 130 | + setIfUnset(args, "kubelet-https", "true") |
| 131 | + setIfUnset(args, "kubelet-preferred-address-types", "Hostname", "InternalIP", "ExternalIP") |
| 132 | + setIfUnset(args, "kubelet-read-only-port", "0") |
| 133 | + setIfUnset(args, "kubernetes-service-node-port", "0") |
| 134 | + setIfUnset(args, "max-mutating-requests-inflight", fmt.Sprintf("%d", kubeAPIServerConfig.ServingInfo.MaxRequestsInFlight/2)) |
| 135 | + setIfUnset(args, "max-requests-inflight", fmt.Sprintf("%d", kubeAPIServerConfig.ServingInfo.MaxRequestsInFlight)) |
| 136 | + setIfUnset(args, "min-request-timeout", fmt.Sprintf("%d", kubeAPIServerConfig.ServingInfo.RequestTimeoutSeconds)) |
| 137 | + setIfUnset(args, "proxy-client-cert-file", kubeAPIServerConfig.AggregatorConfig.ProxyClientInfo.CertFile) |
| 138 | + setIfUnset(args, "proxy-client-key-file", kubeAPIServerConfig.AggregatorConfig.ProxyClientInfo.KeyFile) |
| 139 | + setIfUnset(args, "requestheader-allowed-names", kubeAPIServerConfig.AuthConfig.RequestHeader.ClientCommonNames...) |
| 140 | + setIfUnset(args, "requestheader-client-ca-file", kubeAPIServerConfig.AuthConfig.RequestHeader.ClientCA) |
| 141 | + setIfUnset(args, "requestheader-extra-headers-prefix", kubeAPIServerConfig.AuthConfig.RequestHeader.ExtraHeaderPrefixes...) |
| 142 | + setIfUnset(args, "requestheader-group-headers", kubeAPIServerConfig.AuthConfig.RequestHeader.GroupHeaders...) |
| 143 | + setIfUnset(args, "requestheader-username-headers", kubeAPIServerConfig.AuthConfig.RequestHeader.UsernameHeaders...) |
| 144 | + setIfUnset(args, "secure-port", portString) |
| 145 | + setIfUnset(args, "service-cluster-ip-range", kubeAPIServerConfig.KubernetesMasterConfig.ServicesSubnet) |
| 146 | + setIfUnset(args, "service-node-port-range", kubeAPIServerConfig.KubernetesMasterConfig.ServicesNodePortRange) |
| 147 | + setIfUnset(args, "storage-backend", "etcd3") |
| 148 | + setIfUnset(args, "storage-media-type", "application/vnd.kubernetes.protobuf") |
| 149 | + setIfUnset(args, "tls-cert-file", kubeAPIServerConfig.ServingInfo.ServerCert.CertFile) |
| 150 | + setIfUnset(args, "tls-cipher-suites", kubeAPIServerConfig.ServingInfo.CipherSuites...) |
| 151 | + setIfUnset(args, "tls-min-version", kubeAPIServerConfig.ServingInfo.MinTLSVersion) |
| 152 | + setIfUnset(args, "tls-private-key-file", kubeAPIServerConfig.ServingInfo.ServerCert.KeyFile) |
| 153 | + // TODO re-enable SNI for cluster up |
| 154 | + // tls-sni-cert-key |
| 155 | + setIfUnset(args, "secure-port", portString) |
| 156 | + |
| 157 | + var keys []string |
| 158 | + for key := range args { |
| 159 | + keys = append(keys, key) |
| 160 | + } |
| 161 | + sort.Strings(keys) |
| 162 | + |
| 163 | + var arguments []string |
| 164 | + for _, key := range keys { |
| 165 | + for _, token := range args[key] { |
| 166 | + arguments = append(arguments, fmt.Sprintf("--%s=%v", key, token)) |
| 167 | + } |
| 168 | + } |
| 169 | + return arguments, nil |
| 170 | +} |
| 171 | + |
| 172 | +// currently for cluster up, audit is just broken. |
| 173 | +// TODO fix this |
| 174 | +func auditFlags(kubeAPIServerConfig *configapi.MasterConfig) map[string][]string { |
| 175 | + args := map[string][]string{} |
| 176 | + for key, slice := range kubeAPIServerConfig.KubernetesMasterConfig.APIServerArguments { |
| 177 | + for _, val := range slice { |
| 178 | + args[key] = append(args[key], val) |
| 179 | + } |
| 180 | + } |
| 181 | + |
| 182 | + return args |
| 183 | +} |
| 184 | + |
| 185 | +func setIfUnset(cmdLineArgs map[string][]string, key string, value ...string) { |
| 186 | + if _, ok := cmdLineArgs[key]; !ok { |
| 187 | + cmdLineArgs[key] = value |
| 188 | + } |
| 189 | +} |
| 190 | + |
| 191 | +func admissionFlags(kubeAPIServerConfig *configapi.MasterConfig) (map[string][]string, error) { |
| 192 | + args := map[string][]string{} |
| 193 | + |
| 194 | + forceOn := []string{} |
| 195 | + forceOff := []string{} |
| 196 | + pluginConfig := map[string]configapi.AdmissionPluginConfig{} |
| 197 | + for pluginName, config := range kubeAPIServerConfig.AdmissionConfig.DeepCopy().PluginConfig { |
| 198 | + if len(config.Location) > 0 { |
| 199 | + content, err := ioutil.ReadFile(config.Location) |
| 200 | + if err != nil { |
| 201 | + return nil, err |
| 202 | + } |
| 203 | + // if the config isn't a DefaultAdmissionConfig, then assume we're enabled (we were called after all) |
| 204 | + // if the config *is* a DefaultAdmissionConfig and it explicitly said |
| 205 | + obj, err := configapilatest.ReadYAML(bytes.NewBuffer(content)) |
| 206 | + // if we can't read it, let the plugin deal with it |
| 207 | + // if nothing was there, let the plugin deal with it |
| 208 | + if err != nil || obj == nil { |
| 209 | + forceOn = append(forceOn, pluginName) |
| 210 | + config.Location = "" |
| 211 | + config.Configuration = &runtime.Unknown{Raw: content} |
| 212 | + pluginConfig[pluginName] = *config |
| 213 | + continue |
| 214 | + } |
| 215 | + |
| 216 | + if defaultConfig, ok := obj.(*configapi.DefaultAdmissionConfig); !ok { |
| 217 | + forceOn = append(forceOn, pluginName) |
| 218 | + config.Location = "" |
| 219 | + config.Configuration = &runtime.Unknown{Raw: content} |
| 220 | + pluginConfig[pluginName] = *config |
| 221 | + continue |
| 222 | + |
| 223 | + } else if defaultConfig.Disable { |
| 224 | + forceOff = append(forceOff, pluginName) |
| 225 | + continue |
| 226 | + } else { |
| 227 | + forceOn = append(forceOn, pluginName) |
| 228 | + continue |
| 229 | + } |
| 230 | + |
| 231 | + continue |
| 232 | + } |
| 233 | + // if it wasn't a DefaultAdmissionConfig object, let the plugin deal with it |
| 234 | + if defaultConfig, ok := config.Configuration.(*configapi.DefaultAdmissionConfig); !ok { |
| 235 | + forceOn = append(forceOn, pluginName) |
| 236 | + pluginConfig[pluginName] = *config |
| 237 | + continue |
| 238 | + |
| 239 | + } else if defaultConfig.Disable { |
| 240 | + forceOff = append(forceOff, pluginName) |
| 241 | + continue |
| 242 | + } else { |
| 243 | + forceOn = append(forceOn, pluginName) |
| 244 | + continue |
| 245 | + } |
| 246 | + |
| 247 | + } |
| 248 | + upstreamAdmissionConfig, err := originadmission.ConvertOpenshiftAdmissionConfigToKubeAdmissionConfig(pluginConfig) |
| 249 | + if err != nil { |
| 250 | + return nil, err |
| 251 | + } |
| 252 | + configBytes, err := configapilatest.WriteYAML(upstreamAdmissionConfig) |
| 253 | + if err != nil { |
| 254 | + return nil, err |
| 255 | + } |
| 256 | + |
| 257 | + tempFile, err := ioutil.TempFile("", "kubeapiserver-admission-config.yaml") |
| 258 | + if err != nil { |
| 259 | + return nil, err |
| 260 | + } |
| 261 | + if _, err := tempFile.Write(configBytes); err != nil { |
| 262 | + return nil, err |
| 263 | + } |
| 264 | + tempFile.Close() |
| 265 | + |
| 266 | + setIfUnset(args, "admission-control-config-file", tempFile.Name()) |
| 267 | + setIfUnset(args, "disable-admission-plugins", forceOff...) |
| 268 | + setIfUnset(args, "enable-admission-plugins", forceOn...) |
| 269 | + |
| 270 | + return args, nil |
| 271 | +} |
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