利用obd扩容，先部署一个只有observer的集群，然后修改老集群的配置，再启动老集群。
https://www.oceanbase.com/docs/community/observer-cn/V3.1.4/10000000000450209
这里对新部署的集群的observer状态有没有压根要求呢？
扩容的步骤不对；
就是同一个页面，我只是想问问图中红框内如果是running呢？
$ obd cluster display obtest1
Get local repositories and plugins ok
Open ssh connection ok
Cluster status check ok
Connect to observer ok
Wait for observer init ok
+------------------------------------------------+
| observer |
+--------------+---------+------+-------+--------+
| ip | version | port | zone | status |
+--------------+---------+------+-------+--------+
| 10.11.18.114 | 3.1.4 | 2881 | zone4 | active |
+--------------+---------+------+-------+--------+
obclient [(none)]> alter system add server '10.11.18.114:2882' zone 'zone4';
ERROR 4179 (HY000): add non-empty server not allowed
果然不可以！！！！！！
$ obd cluster display obtest1
Deploy "obtest1" is stopped
See https://open.oceanbase.com/docs/obd-cn/V1.4.0/10000000000436999 .
obclient [(none)]> alter system add server '10.11.18.114:2882' zone 'zone4';
ERROR 4012 (HY000): RPC send error
$ obd cluster destroy obtest1
Get local repositories ok
Search plugins ok
Open ssh connection ok
Cluster status check ok
observer work dir cleaning ok
obtest1 destroyed
$ obd cluster deploy obtest1 -c obtest1.yaml -f
oceanbase-ce-3.1.4 already installed.
+-------------------------------------------------------------------------------------------+
| Packages |
+--------------+---------+-----------------------+------------------------------------------+
| Repository | Version | Release | Md5 |
+--------------+---------+-----------------------+------------------------------------------+
| oceanbase-ce | 3.1.4 | 10000092022071511.el7 | c5cd94f4f190317b6a883c58a26460a506205ce6 |
+--------------+---------+-----------------------+------------------------------------------+
Repository integrity check ok
Parameter check ok
Open ssh connection ok
Initializes observer work home ok
Remote oceanbase-ce-3.1.4-10000092022071511.el7-c5cd94f4f190317b6a883c58a26460a506205ce6 repository install ok
Remote oceanbase-ce-3.1.4-10000092022071511.el7-c5cd94f4f190317b6a883c58a26460a506205ce6 repository lib check !!
Try to get lib-repository
oceanbase-ce-libs-3.1.4 already installed.
Remote oceanbase-ce-libs-3.1.4-10000092022071511.el7-6d5437b0cad486b55963f89b8ef3769af7995350 repository install ok
Remote oceanbase-ce-3.1.4-10000092022071511.el7-c5cd94f4f190317b6a883c58a26460a506205ce6 repository lib check ok
obtest1 deployed
$ obd cluster display obtest1
Deploy "obtest1" is deployed
See https://open.oceanbase.com/docs/obd-cn/V1.4.0/10000000000436999 .
$
$ obd cluster list
+--------------------------------------------------------------+
| Cluster List |
+---------+----------------------------------+-----------------+
| Name | Configuration Path | Status (Cached) |
+---------+----------------------------------+-----------------+
| obtest | /home/admin/.obd/cluster/obtest | running |
| obtest1 | /home/admin/.obd/cluster/obtest1 | deployed |
+---------+----------------------------------+-----------------+
obclient [(none)]> alter system add server ‘10.11.18.114:2882’ zone ‘zone4’ ;
ERROR 4018 (HY000): Entry not exist
按文档来的，但是最终还是报错！
如果是running ，就相当于再重新启动了一个集群。就成了两个集群了。
已经解决，新添加zone 还是有点复杂。