README Update: add introduce of MetaNode-configuration in README and …

…doc.

Signed-off-by: xuxihao <[email protected]>

README.md

@@ -88,11 +88,13 @@ $ tree -L 2
 
 Set parameters of the ChubaoFS cluster in `iplist`. 
 
-1. Set IP addresses in `[master]`, `[datanode]`, `[metanode]`, `[monitor]`, `[client]` field; 
+1. `[master]`, `[datanode]`, `[metanode]`, `[monitor]`, `[client]` modules define IP addresses of each role. 
 
-2. Set `datanode_disks` in  `#datanode config` field. Make sure the path exists on each DataNode and has at least 30GB of space.  
+2. `#datanode config` module defines parameters of DataNodes. `datanode_disks` defines `path` and `reserved space` separated by ":". The `path` is where the data store in, so make sure it exists and has at least 30GB of space; `reserved space` is the minimum free space(Bytes) reserved for the path.
 
-3. Unify the username and password of each node, and set the username and password in `[cfs:vars]` field.
+3. `[cfs:vars]` module defines parameters for SSH connection. So make sure the port, username and password for SSH connection is unified before start.
+
+4. `#metanode config` module defines parameters of MetaNodes. `metanode_totalMem` defines the maximum memory(Bytes) can be use by MetaNode process.
 
 ```yaml
 [master]
@@ -104,14 +106,20 @@ Set parameters of the ChubaoFS cluster in `iplist`.
 [cfs:vars]
 ansible_ssh_port=22
 ansible_ssh_user=root
-ansible_ssh_pass="uu"
+ansible_ssh_pass="password"
 ...
 #datanode config
 ...
 datanode_disks =  '"/data0:10737418240","/data1:10737418240"'
 ...
+#metanode config
+...
+metanode_totalMem = "28589934592"
+...
 ```
 
+For more configurations please refer to [documentation](https://chubaofs.readthedocs.io/en/latest/user-guide/master.html).
+
 Start the resources of ChubaoFS cluster with script `install.sh`. (make sure the Master is started first)
 
 ```

docs/source/user-guide/yum.rst

@@ -23,11 +23,13 @@ Yum tools to run a ChubaoFS cluster for CentOS 7+ is provided. The list of RPM p
 
 Set parameters of the ChubaoFS cluster in **iplist**.
 
-- Set IP addresses in **[master]**, **[datanode]** , **[metanode]** , **[monitor]** , **[client]** field;
+- **[master]**, **[datanode]** , **[metanode]** , **[monitor]** , **[client]** modules define IP addresses of each role.
 
-- Set **datanode_disks** in  **#datanode config** field. Make sure the path exists on each DataNode and has at least 30GB of space.
+- **#datanode config** module defines parameters of DataNodes. **datanode_disks** defines **path** and **reserved space** separated by ":". The **path** is where the data store in, so make sure it exists and has at least 30GB of space; **reserved space** is the minimum free space(Bytes) reserved for the path.
 
-- Unify the username and password of each node, and set the username and password in **[cfs:vars]** field.
+- **[cfs:vars]** module defines parameters for SSH connection. So make sure the port, username and password for SSH connection is unified before start.
+
+- **#metanode config** module defines parameters of MetaNodes. **metanode_totalMem** defines the maximum memory(Bytes) can be use by MetaNode process.
 
 .. code-block:: yaml
 
@@ -46,6 +48,12 @@ Set parameters of the ChubaoFS cluster in **iplist**.
     ...
     datanode_disks =  '"/data0:10737418240","/data1:10737418240"'
     ...
+    #metanode config
+    ...
+    metanode_totalMem = "28589934592"
+    ...
+
+For more configurations, please refer to :doc:`master`; :doc:`metanode`; :doc:`datanode`; :doc:`client`; :doc:`monitor`.
 
 Start the resources of ChubaoFS cluster with script **install.sh** . (make sure the Master is started first)