1. 准备升级至v5.6.1之前的操作

• 5.6.1授权新增字段控制器数量，若证书没有此字段会导致控制器进入运维状态，需要在升级前申请新的证书(需要配置控制器数量)导入数据库

  导入操作如下所示（密码以xxx为例）

  /usr/bin/mysql -uroot -pxxx -e "insert into deepflow.license(status,name,value) values(0,'filename',x'`hexdump -v -e '1/1 "%02x"' xxxxxxxxxxxxxxxxxxxxx.LIC`')"
  

• 确认patch——5.6.0/02-20200529-12483中以下命令已执行

  需执行语句
  mysql -uroot -p -D deepflow -e "ALTER TABLE alarm_policy ADD COLUMN target_line_full TEXT;"
  确认方法：以下语句执行结果中包含target_line_full字段
  mysql -uroot -p -D deepflow -e "show create table alarm_policy"
  

• 由于数据库版本升级，deepflow rpm依赖于mysql，因此必须先在主备控制器分别执行以下命令卸载mysql后重新安装软件，并恢复nodegroup，然后才能执行升级命令

  # 挂载镜像/同步源
  rsync -acqrz --delete [控制器主机名]:/media/{yum,pip,docker-image} /usr/local/deepflow/
  yum clean all
  # 修改pip源
  sed -i '/prefix/d' /etc/pip.conf
  
  # 备份nodegroup
  mv /usr/local/deepflow/saltstack/nodegroup /usr/local/deepflow/saltstack/nodegroup.bak
  # 备份pillar
  mv /usr/local/deepflow/saltstack/pillar /usr/local/deepflow/saltstack/pillar.bak
  # 卸载mysql
  yum erase -y mysql-community-client mysql-community-common mysql-community-devel mysql-community-libs mysql-community-libs-compat mysql-community-server mysql57-community-release
  # 重新安装
  yum --disablerepo=* --enablerepo=deepflow install -y acl-controller alarm analysis cleaner cloud-agent deepflow-database deepflow-saltstack df-web-service diagnose exchange fauths fpermit fuser genesis manager metering mntnct postman talker trisolaris
  # 恢复nodegroup
  mv /usr/local/deepflow/saltstack/nodegroup.bak /usr/local/deepflow/saltstack/nodegroup
  # 恢复pillar
  rm -rf /usr/local/deepflow/saltstack/pillar
  mv /usr/local/deepflow/saltstack/pillar.bak /usr/local/deepflow/saltstack/pillar