参数说明

gs_expand参数可以分为如下几类：

• 通用参数：
  • -t

    gs_expand命令参数类型。

    取值范围：managedn，dilatation，crashclean。

  • -X
    增加节点配置文件路径。

    说明：

    如果需要修改xml文件名称时，需要将修改后的xml文件分发到集群的其他主机上，且保证xml文件权限和修改名称前相同。

    取值范围：clusterconfig.xml的文件路径。

  • -m

    指定所要进行的操作。

    取值范围：

    add：增加集群DN。

    delete：删除集群DN。

    update: 更新standby DN或者passive DN的角色。

  • --role

    增加的DN实例的角色。

    更新的DN实例的角色。

    取值范围：standby，passive。

  • -i

    删除的DN实例名。多个DN实例名以逗号分隔。

    更新的DN实例名。多个DN实例名以逗号分隔。

  • -l

    指定日志文件及存放路径。

    默认值：$GAUSSLOG/om/gs_expand-YYYY-MM-DD_hhmmss.log

  • -?，--help

    显示帮助信息。

  • -V，--version

    显示版本号信息。

示例

• 增加standby DN。
  • 增加standby DN前需要先执行前置脚本，准备环境。以配置文件“clusterconfig_managedn.xml”为例。

    plat1:/opt/software/gaussdb/script #./gs_preinstall -U omm -G dbgrp  -X /opt/software/gaussdb/clusterconfig_managedn.xml --alarm-type=1  
    Parsing the configuration file.
    Successfully parsed the configuration file.
    Installing the tools on the local node.
    Successfully installed the tools on the local node.
    Are you sure you want to create trust for root (yes/no)? yes
    Please enter password for root.
    Password: 
    Creating SSH trust for the root permission user.
    Checking network information.
    All nodes in the network are Normal.
    Successfully checked network information.
    Creating SSH trust.
    Creating the local key file.
    Successfully created the local key files.
    Appending local ID to authorized_keys.
    Successfully appended local ID to authorized_keys.
    Updating the known_hosts file.
    Successfully updated the known_hosts file.
    Appending authorized_key on the remote node.
    Successfully appended authorized_key on all remote node.
    Checking common authentication file content.
    Successfully checked common authentication content.
    Distributing SSH trust file to all node.
    Successfully distributed SSH trust file to all node.
    Verifying SSH trust on all hosts.
    Successfully verified SSH trust on all hosts.
    Successfully created SSH trust.
    Successfully created SSH trust for the root permission user.
    Distributing package.
    Successfully distributed package.
    Are you sure you want to create the user[perfadm] and create trust for it (yes/no)? yes
    Installing the tools in the cluster.
    Successfully installed the tools in the cluster.
    Checking hostname mapping.
    Successfully checked hostname mapping.
    Creating SSH trust for [perfadm] user.
    Please enter password for current user[perfadm].
    Password: 
    Checking network information.
    All nodes in the network are Normal.
    Successfully checked network information.
    Creating SSH trust.
    Creating the local key file.
    Successfully created the local key files.
    Appending local ID to authorized_keys.
    Successfully appended local ID to authorized_keys.
    Updating the known_hosts file.
    Successfully updated the known_hosts file.
    Appending authorized_key on the remote node.
    Successfully appended authorized_key on all remote node.
    Checking common authentication file content.
    Successfully checked common authentication content.
    Distributing SSH trust file to all node.
    Successfully distributed SSH trust file to all node.
    Verifying SSH trust on all hosts.
    Successfully verified SSH trust on all hosts.
    Successfully created SSH trust.
    Successfully created SSH trust for [perfadm] user.
    Checking OS version.
    Successfully checked OS version.
    Creating cluster's path.
    Successfully created cluster's path.
    Setting SCTP service.
    Successfully set SCTP service.
    Set and check OS parameter.
    Setting OS parameters.
    Successfully set OS parameters.
    Warning: Installation environment contains some warning messages.
    Please get more details by "/opt/software/gaussdb/script/gs_checkos -i A -h plat1,plat2,plat3".
    Set and check OS parameter completed.
    Preparing CRON service.
    Successfully prepared CRON service.
    Preparing SSH service.
    Successfully prepared SSH service.
    Setting user environmental variables.
    Successfully set user environmental variables.
    Configuring alarms on the cluster nodes.
    Successfully configured alarms on the cluster nodes.
    Setting the dynamic link library.
    Successfully set the dynamic link library.
    Fixing server package owner.
    Successfully fixed server package owner.
    Create logrotate service.
    Successfully create logrotate service.
    Setting finish flag.
    Successfully set finish flag.
    Preinstallation succeeded.

  • 执行增加standby DN。

    omm@plat1:~> gs_expand -t managedn -m add --role=standby -X /opt/software/gaussdb/clusterconfig_managedn.xml
    Check cluster info.
    Check cluster info successfully.
    Compare config file.
    Compare config file successfully.
    Check cluster status.
    Cluster is OK.
    Backing up cluster configuration.
    Successfully backed up cluster configuration.
    Add Paxos Members in primary dn.
    Successfully add Paxos Members in primary dn.
    Install new instances.
    Install new instances successfully.
    Config standby DN of new instances.
    ..................74s
    Config standby DN of new instances successfully.
    Update zhba.conf.
    Successfully update zhba.conf.
    Update zpaxos datanode peer parameters.
    Successfully update zpaxos datanode peer parameters.
    Begin close cm update node info.
    Successfully close cm update node info.
    Update node info for the cluster.
    Successfully update node info for the cluster.
    Reload new json to etcd.
    Reload new json successfully.
    Begin open cm update node info.
    Successfully open cm update node info.
    Starting cluster.
    Successfully starting the cluster.
    Manage dn is completed

• 执行删除DB1_2、DB2_5。

  omm@plat1:~> gs_expand -t managedn -m delete -i DB1_2,DB2_5
  Check cluster info.
  Check cluster status.
  Cluster is OK.
  Backing up cluster configuration.
  Successfully backed up cluster configuration.
  Delete Paxos Members in primary dn.
  Successfully delete Paxos Members in primary dn.
  Update zpaxos datanode peer parameters.
  Successfully update zpaxos datanode peer parameters.
  Begin close cm update node info.
  Successfully close cm update node info.
  Update node info for the cluster.
  Successfully update node info for the cluster.
  Begin open cm update node info.
  Successfully open cm update node info.
  Reload new json to etcd.
  Reload new json successfully.
  Clean the deleted dn instances.
  Successfully clean the deleted dn instances.
  Manage dn is completed