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apiserver_restart.go
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apiserver_restart.go
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package k8s
import (
"github.com/cybozu-go/cke"
"github.com/cybozu-go/cke/op"
"github.com/cybozu-go/cke/op/common"
)
type apiServerRestartOp struct {
nodes []*cke.Node
cps []*cke.Node
serviceSubnet string
domain string
params cke.APIServerParams
step int
files *common.FilesBuilder
}
// APIServerRestartOp returns an Operator to restart kube-apiserver
func APIServerRestartOp(nodes, cps []*cke.Node, serviceSubnet, domain string, params cke.APIServerParams) cke.Operator {
return &apiServerRestartOp{
nodes: nodes,
cps: cps,
serviceSubnet: serviceSubnet,
domain: domain,
params: params,
files: common.NewFilesBuilder(nodes),
}
}
func (o *apiServerRestartOp) Name() string {
return "kube-apiserver-restart"
}
func (o *apiServerRestartOp) NextCommand() cke.Commander {
switch o.step {
case 0:
o.step++
return common.ImagePullCommand(o.nodes, cke.HyperkubeImage)
case 1:
o.step++
return prepareAPIServerFilesCommand{o.files, o.serviceSubnet, o.domain, o.params}
case 2:
o.step++
return o.files
case 3:
if len(o.nodes) == 0 {
return nil
}
// apiserver need to be restarted one by one
node := o.nodes[0]
o.nodes = o.nodes[1:]
opts := []string{
"--mount", "type=tmpfs,dst=/run/kubernetes",
}
return common.RunContainerCommand([]*cke.Node{node},
op.KubeAPIServerContainerName, cke.HyperkubeImage,
common.WithOpts(opts),
common.WithParams(APIServerParams(o.cps, node.Address, o.serviceSubnet, o.params.AuditLogEnabled, o.params.AuditLogPolicy)),
common.WithExtra(o.params.ServiceParams),
common.WithRestart())
}
panic("unreachable")
}
func (o *apiServerRestartOp) Targets() []string {
ips := make([]string, len(o.nodes))
for i, n := range o.nodes {
ips[i] = n.Address
}
return ips
}