-
Notifications
You must be signed in to change notification settings - Fork 2.2k
/
agent.go
292 lines (284 loc) · 9.29 KB
/
agent.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
package cmds
import (
"os"
"path/filepath"
"github.com/k3s-io/k3s/pkg/version"
"github.com/pkg/errors"
"github.com/urfave/cli"
)
type Agent struct {
Token string
TokenFile string
ClusterSecret string
ServerURL string
APIAddressCh chan []string
DisableLoadBalancer bool
DisableServiceLB bool
ETCDAgent bool
LBServerPort int
ResolvConf string
DataDir string
NodeIP cli.StringSlice
NodeExternalIP cli.StringSlice
NodeName string
PauseImage string
Snapshotter string
Docker bool
ContainerRuntimeEndpoint string
NoFlannel bool
FlannelIface string
FlannelConf string
FlannelCniConfFile string
Debug bool
Rootless bool
RootlessAlreadyUnshared bool
WithNodeID bool
EnableSELinux bool
ProtectKernelDefaults bool
ClusterReset bool
PrivateRegistry string
SystemDefaultRegistry string
AirgapExtraRegistry cli.StringSlice
ExtraKubeletArgs cli.StringSlice
ExtraKubeProxyArgs cli.StringSlice
Labels cli.StringSlice
Taints cli.StringSlice
ImageCredProvBinDir string
ImageCredProvConfig string
AgentReady chan<- struct{}
AgentShared
}
type AgentShared struct {
NodeIP string
}
var (
appName = filepath.Base(os.Args[0])
AgentConfig Agent
AgentTokenFlag = cli.StringFlag{
Name: "token,t",
Usage: "(cluster) Token to use for authentication",
EnvVar: version.ProgramUpper + "_TOKEN",
Destination: &AgentConfig.Token,
}
NodeIPFlag = cli.StringSliceFlag{
Name: "node-ip,i",
Usage: "(agent/networking) IPv4/IPv6 addresses to advertise for node",
Value: &AgentConfig.NodeIP,
}
NodeExternalIPFlag = cli.StringSliceFlag{
Name: "node-external-ip",
Usage: "(agent/networking) IPv4/IPv6 external IP addresses to advertise for node",
Value: &AgentConfig.NodeExternalIP,
}
NodeNameFlag = cli.StringFlag{
Name: "node-name",
Usage: "(agent/node) Node name",
EnvVar: version.ProgramUpper + "_NODE_NAME",
Destination: &AgentConfig.NodeName,
}
WithNodeIDFlag = cli.BoolFlag{
Name: "with-node-id",
Usage: "(agent/node) Append id to node name",
Destination: &AgentConfig.WithNodeID,
}
DockerFlag = cli.BoolFlag{
Name: "docker",
Usage: "(agent/runtime) Use docker instead of containerd",
Destination: &AgentConfig.Docker,
}
CRIEndpointFlag = cli.StringFlag{
Name: "container-runtime-endpoint",
Usage: "(agent/runtime) Disable embedded containerd and use alternative CRI implementation",
Destination: &AgentConfig.ContainerRuntimeEndpoint,
}
PrivateRegistryFlag = cli.StringFlag{
Name: "private-registry",
Usage: "(agent/runtime) Private registry configuration file",
Destination: &AgentConfig.PrivateRegistry,
Value: "/etc/rancher/" + version.Program + "/registries.yaml",
}
AirgapExtraRegistryFlag = cli.StringSliceFlag{
Name: "airgap-extra-registry",
Usage: "(agent/runtime) Additional registry to tag airgap images as being sourced from",
Value: &AgentConfig.AirgapExtraRegistry,
Hidden: true,
}
PauseImageFlag = cli.StringFlag{
Name: "pause-image",
Usage: "(agent/runtime) Customized pause image for containerd or docker sandbox",
Destination: &AgentConfig.PauseImage,
Value: DefaultPauseImage,
}
SnapshotterFlag = cli.StringFlag{
Name: "snapshotter",
Usage: "(agent/runtime) Override default containerd snapshotter",
Destination: &AgentConfig.Snapshotter,
Value: DefaultSnapshotter,
}
FlannelFlag = cli.BoolFlag{
Name: "no-flannel",
Usage: "(deprecated) use --flannel-backend=none",
Destination: &AgentConfig.NoFlannel,
}
FlannelIfaceFlag = cli.StringFlag{
Name: "flannel-iface",
Usage: "(agent/networking) Override default flannel interface",
Destination: &AgentConfig.FlannelIface,
}
FlannelConfFlag = cli.StringFlag{
Name: "flannel-conf",
Usage: "(agent/networking) Override default flannel config file",
Destination: &AgentConfig.FlannelConf,
}
FlannelCniConfFileFlag = cli.StringFlag{
Name: "flannel-cni-conf",
Usage: "(agent/networking) Override default flannel cni config file",
Destination: &AgentConfig.FlannelCniConfFile,
}
ResolvConfFlag = cli.StringFlag{
Name: "resolv-conf",
Usage: "(agent/networking) Kubelet resolv.conf file",
EnvVar: version.ProgramUpper + "_RESOLV_CONF",
Destination: &AgentConfig.ResolvConf,
}
ExtraKubeletArgs = cli.StringSliceFlag{
Name: "kubelet-arg",
Usage: "(agent/flags) Customized flag for kubelet process",
Value: &AgentConfig.ExtraKubeletArgs,
}
ExtraKubeProxyArgs = cli.StringSliceFlag{
Name: "kube-proxy-arg",
Usage: "(agent/flags) Customized flag for kube-proxy process",
Value: &AgentConfig.ExtraKubeProxyArgs,
}
NodeTaints = cli.StringSliceFlag{
Name: "node-taint",
Usage: "(agent/node) Registering kubelet with set of taints",
Value: &AgentConfig.Taints,
}
NodeLabels = cli.StringSliceFlag{
Name: "node-label",
Usage: "(agent/node) Registering and starting kubelet with set of labels",
Value: &AgentConfig.Labels,
}
ImageCredProvBinDirFlag = cli.StringFlag{
Name: "image-credential-provider-bin-dir",
Usage: "(agent/node) The path to the directory where credential provider plugin binaries are located",
Destination: &AgentConfig.ImageCredProvBinDir,
Value: "/var/lib/rancher/credentialprovider/bin",
}
ImageCredProvConfigFlag = cli.StringFlag{
Name: "image-credential-provider-config",
Usage: "(agent/node) The path to the credential provider plugin config file",
Destination: &AgentConfig.ImageCredProvConfig,
Value: "/var/lib/rancher/credentialprovider/config.yaml",
}
DisableSELinuxFlag = cli.BoolTFlag{
Name: "disable-selinux",
Usage: "(deprecated) Use --selinux to explicitly enable SELinux",
Hidden: true,
}
ProtectKernelDefaultsFlag = cli.BoolFlag{
Name: "protect-kernel-defaults",
Usage: "(agent/node) Kernel tuning behavior. If set, error if kernel tunables are different than kubelet defaults.",
Destination: &AgentConfig.ProtectKernelDefaults,
}
SELinuxFlag = cli.BoolFlag{
Name: "selinux",
Usage: "(agent/node) Enable SELinux in containerd",
Hidden: false,
Destination: &AgentConfig.EnableSELinux,
EnvVar: version.ProgramUpper + "_SELINUX",
}
LBServerPortFlag = cli.IntFlag{
Name: "lb-server-port",
Usage: "(agent/node) Local port for supervisor client load-balancer. If the supervisor and apiserver are not colocated an additional port 1 less than this port will also be used for the apiserver client load-balancer.",
Hidden: false,
Destination: &AgentConfig.LBServerPort,
EnvVar: version.ProgramUpper + "_LB_SERVER_PORT",
Value: 6444,
}
)
func CheckSELinuxFlags(ctx *cli.Context) error {
disable, enable := DisableSELinuxFlag.Name, SELinuxFlag.Name
switch {
case ctx.IsSet(disable) && ctx.IsSet(enable):
return errors.Errorf("--%s is deprecated in favor of --%s to affirmatively enable it in containerd", disable, enable)
case ctx.IsSet(disable):
AgentConfig.EnableSELinux = !ctx.Bool(disable)
}
return nil
}
func NewAgentCommand(action func(ctx *cli.Context) error) cli.Command {
return cli.Command{
Name: "agent",
Usage: "Run node agent",
UsageText: appName + " agent [OPTIONS]",
Before: CheckSELinuxFlags,
Action: action,
Flags: []cli.Flag{
ConfigFlag,
DebugFlag,
VLevel,
VModule,
LogFile,
AlsoLogToStderr,
AgentTokenFlag,
cli.StringFlag{
Name: "token-file",
Usage: "(cluster) Token file to use for authentication",
EnvVar: version.ProgramUpper + "_TOKEN_FILE",
Destination: &AgentConfig.TokenFile,
},
cli.StringFlag{
Name: "server,s",
Usage: "(cluster) Server to connect to",
EnvVar: version.ProgramUpper + "_URL",
Destination: &AgentConfig.ServerURL,
},
cli.StringFlag{
Name: "data-dir,d",
Usage: "(agent/data) Folder to hold state",
Destination: &AgentConfig.DataDir,
Value: "/var/lib/rancher/" + version.Program + "",
},
NodeNameFlag,
WithNodeIDFlag,
NodeLabels,
NodeTaints,
ImageCredProvBinDirFlag,
ImageCredProvConfigFlag,
DockerFlag,
CRIEndpointFlag,
PauseImageFlag,
SnapshotterFlag,
PrivateRegistryFlag,
AirgapExtraRegistryFlag,
NodeIPFlag,
NodeExternalIPFlag,
ResolvConfFlag,
FlannelIfaceFlag,
FlannelConfFlag,
FlannelCniConfFileFlag,
ExtraKubeletArgs,
ExtraKubeProxyArgs,
ProtectKernelDefaultsFlag,
cli.BoolFlag{
Name: "rootless",
Usage: "(experimental) Run rootless",
Destination: &AgentConfig.Rootless,
},
&SELinuxFlag,
LBServerPortFlag,
// Deprecated/hidden below
&DisableSELinuxFlag,
FlannelFlag,
cli.StringFlag{
Name: "cluster-secret",
Usage: "(deprecated) use --token",
Destination: &AgentConfig.ClusterSecret,
EnvVar: version.ProgramUpper + "_CLUSTER_SECRET",
},
},
}
}