etcd v3.6.1 重磅发布！性能飙升+安全加固，云原生存储引擎迎来革命性升级

ETCD_VER=v3.6.1
DOWNLOAD_URL=https://storage.googleapis.com/etcd

# 清理旧版本并下载
rm -f /tmp/etcd-${ETCD_VER}-linux-amd64.tar.gz
curl -L ${DOWNLOAD_URL}/${ETCD_VER}/etcd-${ETCD_VER}-linux-amd64.tar.gz -o /tmp/etcd.tar.gz

# 解压并验证
tar xzvf /tmp/etcd.tar.gz -C /tmp --strip-components=1
/tmp/etcd --version  # 预期输出 v3.6.1

# 启动单节点集群
/tmp/etcd --data-dir=/tmp/etcd-data &

# 通过Homebrew一键安装
brew tap etcd-io/tap
brew install etcd

# 手动安装方案
curl -LO https://github.com/etcd-io/etcd/releases/download/v3.6.1/etcd-v3.6.1-darwin-amd64.zip
unzip etcd-*.zip && mv etcd-*/etcd* /usr/local/bin/

docker run -d \
  -p 2379:2379 \
  -p 2380:2380 \
  -v /etcd-data:/etcd-data \
  gcr.io/etcd-development/etcd:v3.6.1 \
  /usr/local/bin/etcd \
  --name infra0 \
  --data-dir=/etcd-data \
  --advertise-client-urls http://0.0.0.0:2379 \
  --listen-client-urls http://0.0.0.0:2379

# 写入加密数据
etcdctl --endpoints=localhost:2379 put api_key "s3cR3t#K3y!2025"

# 事务式读取
etcdctl get api_key --print-value-only

# 实时健康检测（新增QU指标）
etcdctl endpoint health --write-out=table

# 输出示例：
+----------------+--------+-------------+-------+
|    ENDPOINT    | HEALTH | RESPONSE MS |  QU   |
+----------------+--------+-------------+-------+
| 127.0.0.1:2379|   true |        1.2ms| 0.95  |
+----------------+--------+-------------+-------+

# 查看证书有效期（新增功能）
etcdctl cert check-expiry

# 自动续期操作
etcdctl cert rotate --ttl=8760h

# 节点顺序升级（推荐金丝雀发布）
for node in {3,2,1}; do
  ssh node$node "systemctl stop etcd"
  scp etcd-v3.6.1-linux-amd64.tar.gz node$node:/tmp/
  ssh node$node "tar xzvf /tmp/etcd.tar.gz -C /usr/bin/"
  ssh node$node "systemctl start etcd --enable-version-check"
done

// 新增内存回收算法核心逻辑
func (b *backend) runGarbageCollection() {
  threshold := b.cfg.MemoryThreshold 
  if memUsed > threshold {
    b.compactRev = b.scheduleCompact()
    b.diskFlush() // 新增异步刷盘
  }
}

# 调整防火墙规则
iptables -A INPUT -p tcp --dport  -j ACCEPT
sysctl -w net.core.somaxconn=4096

# 动态调整配额
etcdctl alarm disarm
etcdctl compact $(etcdctl endpoint status -w json | jq .[].header.revision)