github.com/alibaba/sealer@v0.8.6-0.20220430115802-37a2bdaa8173/pkg/runtime/upgrade.go (about)

     1  // Copyright © 2021 Alibaba Group Holding Ltd.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package runtime
    16  
    17  import (
    18  	"fmt"
    19  	"path/filepath"
    20  	"strings"
    21  )
    22  
    23  const (
    24  	chmodCmd       = `chmod +x %s/*`
    25  	mvCmd          = `mv %s/* /usr/bin`
    26  	getNodeNameCmd = `$(uname -n | tr '[A-Z]' '[a-z]')`
    27  	drainCmd       = `kubectl drain ` + getNodeNameCmd + ` --ignore-daemonsets`
    28  	upgradeCmd     = `kubeadm upgrade %s`
    29  	restartCmd     = `systemctl daemon-reload && systemctl restart kubelet`
    30  	uncordonCmd    = `kubectl uncordon ` + getNodeNameCmd
    31  )
    32  
    33  func (k *KubeadmRuntime) upgrade() error {
    34  	var err error
    35  	binpath := filepath.Join(k.getRootfs(), `bin`)
    36  
    37  	err = k.upgradeFirstMaster(k.GetMaster0IP(), binpath, k.getKubeVersion())
    38  	if err != nil {
    39  		return err
    40  	}
    41  	err = k.upgradeOtherMasters(k.GetMasterIPList()[1:], binpath, k.getKubeVersion())
    42  	if err != nil {
    43  		return err
    44  	}
    45  	err = k.upgradeNodes(k.GetNodeIPList(), binpath)
    46  	if err != nil {
    47  		return err
    48  	}
    49  	return nil
    50  }
    51  
    52  func (k *KubeadmRuntime) upgradeFirstMaster(IP string, binpath, version string) error {
    53  	var drain string
    54  	//if version >= 1.20.x,add flag `--delete-emptydir-data`
    55  	if VersionCompare(version, V1200) {
    56  		drain = fmt.Sprintf("%s %s", drainCmd, "--delete-emptydir-data")
    57  	} else {
    58  		drain = fmt.Sprintf("%s %s", drainCmd, "--delete-local-data")
    59  	}
    60  
    61  	var firstMasterCmds = []string{
    62  		fmt.Sprintf(chmodCmd, binpath),
    63  		fmt.Sprintf(mvCmd, binpath),
    64  		drain,
    65  		fmt.Sprintf(upgradeCmd, strings.Join([]string{`apply`, version, `-y`}, " ")),
    66  		restartCmd,
    67  		uncordonCmd,
    68  	}
    69  	ssh, err := k.getHostSSHClient(IP)
    70  	if err != nil {
    71  		return fmt.Errorf("upgrade master0 failed %v", err)
    72  	}
    73  	return ssh.CmdAsync(IP, firstMasterCmds...)
    74  }
    75  
    76  func (k *KubeadmRuntime) upgradeOtherMasters(IPs []string, binpath, version string) error {
    77  	var drain string
    78  	//if version >= 1.20.x,add flag `--delete-emptydir-data`
    79  	if VersionCompare(version, V1200) {
    80  		drain = fmt.Sprintf("%s %s", drainCmd, "--delete-emptydir-data")
    81  	} else {
    82  		drain = fmt.Sprintf("%s %s", drainCmd, "--delete-local-data")
    83  	}
    84  
    85  	var otherMasterCmds = []string{
    86  		fmt.Sprintf(chmodCmd, binpath),
    87  		fmt.Sprintf(mvCmd, binpath),
    88  		drain,
    89  		fmt.Sprintf(upgradeCmd, `node`),
    90  		restartCmd,
    91  		uncordonCmd,
    92  	}
    93  	var err error
    94  	for _, ip := range IPs {
    95  		ssh, err := k.getHostSSHClient(ip)
    96  		if err != nil {
    97  			return fmt.Errorf("upgrade other masters failed: %v", err)
    98  		}
    99  		err = ssh.CmdAsync(ip, otherMasterCmds...)
   100  		if err != nil {
   101  			return err
   102  		}
   103  	}
   104  	return err
   105  }
   106  
   107  func (k *KubeadmRuntime) upgradeNodes(IPs []string, binpath string) error {
   108  	var nodeCmds = []string{
   109  		fmt.Sprintf(chmodCmd, binpath),
   110  		fmt.Sprintf(mvCmd, binpath),
   111  		fmt.Sprintf(upgradeCmd, `node`),
   112  		restartCmd,
   113  	}
   114  	var err error
   115  	for _, ip := range IPs {
   116  		ssh, err := k.getHostSSHClient(ip)
   117  		if err != nil {
   118  			return fmt.Errorf("upgrade node failed: %v", err)
   119  		}
   120  		err = ssh.CmdAsync(ip, nodeCmds...)
   121  		if err != nil {
   122  			return err
   123  		}
   124  	}
   125  	return err
   126  }