https://blog.csdn.net/chrisy521/article/details/127651855?spm=1001.2014.3001.5501
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感谢阿福老师，打call 
安装时报错，我是用的3.1.4的配置文件（安装3.1.4是可以成功的），报错如下：
observer.log:
配置文件如下：
## Only need to configure when remote login is required
#user:
# username: admin
# password: admin
# key_file: your ssh-key file path if need
# port: your ssh port, default 22
# timeout: ssh connection timeout (second), default 30
oceanbase-ce:
servers:
- name: server1
# Please don't use hostname, only IP can be supported
ip: 192.168.31.201
- name: server2
ip: 192.168.31.202
- name: server3
ip: 192.168.31.203
global:
# Please set devname as the network adaptor's name whose ip is in the setting of severs.
# if set severs as "127.0.0.1", please set devname as "lo"
# if current ip is 192.168.1.10, and the ip's network adaptor's name is "eth0", please use "eth0"
devname: ens160
cluster_id: 1
# please set memory limit to a suitable value which is matching resource.
memory_limit: 6G # The maximum running memory for an observer
system_memory: 3G # The reserved system memory. system_memory is reserved for general tenants. The default value is 30G.
stack_size: 512K
cpu_count: 16
cache_wash_threshold: 1G
__min_full_resource_pool_memory: 268435456
workers_per_cpu_quota: 10
schema_history_expire_time: 1d
# The value of net_thread_count had better be same as cpu's core number.
net_thread_count: 4
major_freeze_duty_time: Disable
minor_freeze_times: 10
enable_separate_sys_clog: 0
enable_merge_by_turn: FALSE
datafile_disk_percentage: 20 # The percentage of the data_dir space to the total disk space. This value takes effect only when datafile_size is 0. The default value is 90.
syslog_level: INFO # System log level. The default value is INFO.
enable_syslog_wf: false # Print system logs whose levels are higher than WARNING to a separate log file. The default value is true.
enable_syslog_recycle: true # Enable auto system log recycling or not. The default value is false.
max_syslog_file_count: 4 # The maximum number of reserved log files before enabling auto recycling. The default value is 0.
# observer cluster name, consistent with obproxy's cluster_name
appname: obcluster
# root_password: # root user password, can be empty
server1:
mysql_port: 2881 # External port for OceanBase Database. The default value is 2881. DO NOT change this value after the cluster is started.
rpc_port: 2882 # Internal port for OceanBase Database. The default value is 2882. DO NOT change this value after the cluster is started.
# The working directory for OceanBase Database. OceanBase Database is started under this directory. This is a required field.
home_path: /home/admin/observer
# The directory for data storage. The default value is $home_path/store.
# data_dir: /data
# The directory for clog, ilog, and slog. The default value is the same as the data_dir value.
# redo_dir: /redo
zone: zone1
server2:
mysql_port: 2881 # External port for OceanBase Database. The default value is 2881. DO NOT change this value after the cluster is started.
rpc_port: 2882 # Internal port for OceanBase Database. The default value is 2882. DO NOT change this value after the cluster is started.
# The working directory for OceanBase Database. OceanBase Database is started under this directory. This is a required field.
home_path: /home/admin/observer
# The directory for data storage. The default value is $home_path/store.
# data_dir: /data
# The directory for clog, ilog, and slog. The default value is the same as the data_dir value.
# redo_dir: /redo
zone: zone2
server3:
mysql_port: 2881 # External port for OceanBase Database. The default value is 2881. DO NOT change this value after the cluster is started.
rpc_port: 2882 # Internal port for OceanBase Database. The default value is 2882. DO NOT change this value after the cluster is started.
# The working directory for OceanBase Database. OceanBase Database is started under this directory. This is a required field.
home_path: /home/admin/observer
# The directory for data storage. The default value is $home_path/store.
# data_dir: /data
# The directory for clog, ilog, and slog. The default value is the same as the data_dir value.
# redo_dir: /redo
zone: zone3
看打印的信息OB版本已经是4.0.0.0。说明这是个在线部署，由于yaml里没有指定版本，OBD自动去镜像源获取了最新版本。如果依旧想要使用3.1.4，可以在yaml加上version: 3.1.4（参考https://github.com/oceanbase/obdeploy/tree/master/example/oceanbase-3.x）
也可以换用https://github.com/oceanbase/obdeploy/tree/master/example 的配置，直接使用OB 4.0
感谢阿福老师！
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今晚试了一下，使用 3.1.4 的配置文件和 obd 是可以的，自动检测到最新版本的 observer obproxy 和 lib 然后安装成功了。您可以再多尝试一下。
268435456 这个值设的太小了，调大点就行了，内部执行的时候也是调不到这么低的
mysql> alter system __min_full_resource_pool_memory = 268435456;
ERROR 4147 (HY000): Invalid config
mysql>
mysql> alter system __min_full_resource_pool_memory = 2147483648;
Query OK, 0 rows affected (0.03 sec)
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