南大通用GBase 8a整个集群从ipv4更换到ipv6的工具使用样例

发表于 作者 laozizhu

GBase 8a支持ipv4和ipv6的ip地址，如果从ipv4更换到ipv6时，必须手工逐个节点的修改替换，或者自行编写个工具来执行。本文介绍一个新的GBase 提供的ip地址更换工具，可以自动将集群所有节点的ip从ipv4更改到ipv6。

本文测试时尚不是最终发布版本，如有变动会更新本文档。

本文测试的是8.6.2Build43,未包含95。

注意

如果系统存在event或者故障节点，请先修复，集群必须处于完全正常状态。

如果有未完成的重分布，也请先完成，之后删掉无用的分布策略distribuition。

在替换IP前，停掉业务，包括外部定时任务，数据库内定时任务。

建议整个集群重启一次，操作步骤参考 GBase 8a从V8升级到V9的REDOLOG的刷新处理，虽然替换功能本身会刷REDOLOG。

环境

2节点ipv4集群，8.6.2Build43R35.5版本。两台服务器已经配置了ipv6地址并生效。

[root@rh6-1 gcreplaceip]# gcadmin
CLUSTER STATE:  ACTIVE
CLUSTER MODE:   NORMAL

=================================================================
|             GBASE COORDINATOR CLUSTER INFORMATION             |
=================================================================
|   NodeName   |     IpAddress     |gcware |gcluster |DataState |
-----------------------------------------------------------------
| coordinator1 |    10.0.2.201     | OPEN  |  OPEN   |    0     |
-----------------------------------------------------------------
| coordinator2 |    10.0.2.202     | OPEN  |  OPEN   |    0     |
-----------------------------------------------------------------
=============================================================
|              GBASE DATA CLUSTER INFORMATION               |
=============================================================
|NodeName |     IpAddress     |gnode |syncserver |DataState |
-------------------------------------------------------------
|  node1  |    10.0.2.201     | OPEN |   OPEN    |    0     |
-------------------------------------------------------------
|  node2  |    10.0.2.202     | OPEN |   OPEN    |    0     |
-------------------------------------------------------------

新的ipv6地址分别为2001::201和2001::202, 本文只是测试目的，请根据实际要求更换IPV6。

201节点

[gbase@rh6-1 gcreplaceip]$ ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 08:00:27:30:04:2F
          inet addr:10.0.2.201  Bcast:10.0.2.255  Mask:255.255.255.0
          inet6 addr: 2001::201/64 Scope:Global
          inet6 addr: fe80::a00:27ff:fe30:42f/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:11982 errors:0 dropped:0 overruns:0 frame:0
          TX packets:17348 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1445641 (1.3 MiB)  TX bytes:2323338 (2.2 MiB)

202节点

[root@rh6-2 ~]# ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 08:00:27:C6:0F:AE
          inet addr:10.0.2.202  Bcast:10.0.2.255  Mask:255.255.255.0
          inet6 addr: 2001::202/64 Scope:Global
          inet6 addr: fe80::a00:27ff:fec6:fae/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:15815 errors:0 dropped:0 overruns:0 frame:0
          TX packets:10777 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:2182245 (2.0 MiB)  TX bytes:1309792 (1.2 MiB)

替换工具

[root@rh6-1 gcreplaceip]# ll
total 104
-rw-r--r-- 1 root root 44016 Aug 19 10:48 gcReplaceIp.py
-rw-r--r-- 1 root root   206 Aug 23 10:11 hostReplaceIp.json
-rw-r--r-- 1 root root    17 Aug 19 10:48 README.md
-rw-r--r-- 1 root root 28472 Aug 19 10:48 ReplaceIpFuns.py
-rw-r--r-- 1 root root   276 Aug 23 10:11 replaceip.options
-rw-r--r-- 1 root root  8648 Aug 19 10:48 rmt.py
-rw-r--r-- 1 root root  2596 Aug 19 10:48 SSHThread.py
-rw-r--r-- 1 root root  1812 Aug 19 10:48 使用说明.txt

替换程序

gcReplaceIp.py
[gbase@rh6-1 gcreplaceip]$ ./gcReplaceIp.py --help
Usage: gcReplaceIp.py [options]

Options:
  -h, --help            show this help message and exit
  --silent=SILENTCONFIG
                        use the supplied properties file for a 'silent'
                        ipreplace
  --passwordInputMode=PASSWORDINPUTMODE
                        get password method[file,pwdsame,pwddiff],
                        file:    get from config file,default
                        pwdsame:   nodes have the same user passwd
                        pwddiff:   nodes have different user passwds
[gbase@rh6-1 gcreplaceip]

配置文件

replaceip.options

与安装配置文件格式相同，包括现有集群的IP和密码等信息，增加了IP替换的配置文件的参数

[root@rh6-1 gcreplaceip]# cat replaceip.options
installPrefix= /opt
coordinateHost = 10.0.2.201,10.0.2.202
dataHost = 10.0.2.201,10.0.2.202
#gcwareHost = 192.168.7.210
dbaUser = gbase
dbaGroup = gbase
dbaPwd = 'gbase1234'
rootPwd = '111111'
version = V862
#rootPwdFile = rootPwd.json
hostReplaceIpFile = hostReplaceIp.json

hostReplaceIp.json

IP替换规则

[root@rh6-1 gcreplaceip]# cat hostReplaceIp.json
{
    "HOSTREPLACEIP":[
        {
            "OLDIP":"10.0.2.201",
            "NEWIP":"2001::201"
        },
        {
            "OLDIP":"10.0.2.202",
            "NEWIP":"2001::202"
        }
    ]
}

运行样例

要在dbaUser下运行。最终集群成功从ipv4替换到了ipv6地址。

[root@rh6-1 gcreplaceip]# chmod a+x *.py
[root@rh6-1 gcreplaceip]# chown -R gbase:gbase *
[root@rh6-1 gcreplaceip]# su gbase
[gbase@rh6-1 gcreplaceip]$ ./gcReplaceIp.py --silent=replaceip.options
*********************************************************************************
                     Welcome to use GBase products
*********************************************************************************
modify gcware file on 10.0.2.201 successfully.
modify gcware file on 10.0.2.202 successfully.
Starting all gcluster nodes...
sys.exit
[gbase@rh6-1 gcreplaceip]$ gcadmin
CLUSTER STATE:  ACTIVE
CLUSTER MODE:   NORMAL

=========================================================
|         GBASE COORDINATOR CLUSTER INFORMATION         |
=========================================================
|   NodeName   | IpAddress |gcware |gcluster |DataState |
---------------------------------------------------------
| coordinator1 | 2001::201 | OPEN  |  OPEN   |    0     |
---------------------------------------------------------
| coordinator2 | 2001::202 | OPEN  |  OPEN   |    0     |
---------------------------------------------------------
=====================================================
|          GBASE DATA CLUSTER INFORMATION           |
=====================================================
|NodeName | IpAddress |gnode |syncserver |DataState |
-----------------------------------------------------
|  node1  | 2001::201 | OPEN |   OPEN    |    0     |
-----------------------------------------------------
|  node2  | 2001::202 | OPEN |   OPEN    |    0     |
-----------------------------------------------------
[gbase@rh6-1 gcreplaceip]$

执行日志

[root@rh6-1 gcreplaceip]# cat gcReplaceIp.log
2022-08-23 10:12:36,004-DEBUG chmod 766 /home/gbase/gcreplaceip/gcReplaceIp.log
2022-08-23 10:12:54,044-DEBUG chmod 766 /home/gbase/gcreplaceip/gcReplaceIp.log
2022-08-23 10:12:57,069-INFO coordinateHost ?: ['10.0.2.201', '10.0.2.202']
2022-08-23 10:12:57,069-INFO dataHost ?: ['10.0.2.201', '10.0.2.202']
2022-08-23 10:12:57,069-DEBUG stop all gcluster nodes...
2022-08-23 10:13:06,829-INFO 10.0.2.201: stop service successfully.
2022-08-23 10:13:07,480-INFO 10.0.2.202: stop service successfully.
2022-08-23 10:13:08,411-INFO bakeup file on v862 version...
2022-08-23 10:13:14,433-DEBUG modify corosync file...
2022-08-23 10:13:19,820-INFO modify gcware file on 10.0.2.201 successfully.
2022-08-23 10:13:20,271-INFO modify gcware file on 10.0.2.202 successfully.
2022-08-23 10:13:20,813-DEBUG Starting all gcluster nodes...
2022-08-23 10:13:39,273-INFO start service successfull on host 10.0.2.201.
2022-08-23 10:13:39,837-INFO start service successfull on host 10.0.2.202.
2022-08-23 10:35:37,482-DEBUG chmod 766 /home/gbase/gcreplaceip/gcReplaceIp.log
[root@rh6-1 gcreplaceip]#

回退

更换前，所有重要的文件都备份在/home/gbase目录下，一般类似如下的样子、

/home/gbase/gcluster_backup_20220823093037.tar.bz2

里面就是所有文件，

[root@rh6-1 ip]# ll
total 20
drwxr-xr-x 6 root root 4096 Aug 24 15:37 etc
drwxr-xr-x 3 root root 4096 Aug 24 15:37 home
drwxr-xr-x 4 root root 4096 Aug 24 15:37 opt
drwxr-xr-x 7 root root 4096 Aug 24 15:37 usr
drwxr-xr-x 4 root root 4096 Aug 24 15:37 var

可以直接解压，然后覆盖即可。 也可以直接解压到根目录，直接覆盖。

注意每个节点都要做。用安装程序的restore.py也可以。

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