add comment for exchange (#1953)

docs-2.0/nebula-exchange/use-exchange/ex-ug-export-from-nebula.md

@@ -77,7 +77,8 @@ As the data source, NebulaGraph stores the [basketballplayer dataset](https://do
       address:{
         graph:["127.0.0.1:9669"]
 
-        # the address of any of the meta services
+        # the address of any of the meta services.
+        # if your NebulaGraph server is in virtual network like k8s, please config the leader address of meta.
         meta:["127.0.0.1:9559"]
       }
       user: root

docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-clickhouse.md

@@ -109,6 +109,8 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # If there are multiple addresses, the format is "ip1:port","ip2:port","ip3:port".
       # Addresses are separated by commas.
       graph:["127.0.0.1:9669"]
+      # the address of any of the meta services.
+      # if your NebulaGraph server is in virtual network like k8s, please config the leader address of meta.
       meta:["127.0.0.1:9559"]
     }
     # The account entered must have write permission for the NebulaGraph space.

docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-csv.md

@@ -127,6 +127,8 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # If there are multiple addresses, the format is "ip1:port","ip2:port","ip3:port".
       # Addresses are separated by commas.
       graph:["127.0.0.1:9669"]
+      # the address of any of the meta services.
+      # if your NebulaGraph server is in virtual network like k8s, please config the leader address of meta.
       meta:["127.0.0.1:9559"]
     }
 

docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-hbase.md

@@ -147,6 +147,8 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # If there are multiple addresses, the format is "ip1:port","ip2:port","ip3:port".
       # Addresses are separated by commas.
       graph:["127.0.0.1:9669"]
+      # the address of any of the meta services.
+      # if your NebulaGraph server is in virtual network like k8s, please config the leader address of meta.
       meta:["127.0.0.1:9559"]
     }
     # The account entered must have write permission for the NebulaGraph space.

docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-hive.md

@@ -188,6 +188,8 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # If there are multiple addresses, the format is "ip1:port","ip2:port","ip3:port".
       # Addresses are separated by commas.
       graph:["127.0.0.1:9669"]
+      # the address of any of the meta services.
+      # if your NebulaGraph server is in virtual network like k8s, please config the leader address of meta.
       meta:["127.0.0.1:9559"]
     }
     # The account entered must have write permission for the NebulaGraph space.

docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-jdbc.md

@@ -149,6 +149,8 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # If there are multiple addresses, the format is "ip1:port","ip2:port","ip3:port".
       # Addresses are separated by commas.
       graph:["127.0.0.1:9669"]
+      # the address of any of the meta services.
+      # if your NebulaGraph server is in virtual network like k8s, please config the leader address of meta.
       meta:["127.0.0.1:9559"]
     }
     # The account entered must have write permission for the NebulaGraph space.

docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-json.md

@@ -155,6 +155,8 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # If there are multiple addresses, the format is "ip1:port","ip2:port","ip3:port".
       # Addresses are separated by commas.
       graph:["127.0.0.1:9669"]
+      # the address of any of the meta services.
+      # if your NebulaGraph server is in virtual network like k8s, please config the leader address of meta.
       meta:["127.0.0.1:9559"]
     }
 

docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-kafka.md

@@ -106,6 +106,8 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # If there are multiple addresses, the format is "ip1:port","ip2:port","ip3:port".
       # Addresses are separated by commas.
       graph:["127.0.0.1:9669"]
+      # the address of any of the meta services.
+      # if your NebulaGraph server is in virtual network like k8s, please config the leader address of meta.
       meta:["127.0.0.1:9559"]
     }
     # The account entered must have write permission for the NebulaGraph space.

docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-maxcompute.md

@@ -109,6 +109,8 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # If there are multiple addresses, the format is "ip1:port","ip2:port","ip3:port".
       # Addresses are separated by commas.
       graph:["127.0.0.1:9669"]
+      # the address of any of the meta services.
+      # if your NebulaGraph server is in virtual network like k8s, please config the leader address of meta.
       meta:["127.0.0.1:9559"]
     }
     # The account entered must have write permission for the NebulaGraph space.

docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-mysql.md

@@ -149,6 +149,8 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # If there are multiple addresses, the format is "ip1:port","ip2:port","ip3:port".
       # Addresses are separated by commas.
       graph:["127.0.0.1:9669"]
+      # the address of any of the meta services.
+      # if your NebulaGraph server is in virtual network like k8s, please config the leader address of meta.
       meta:["127.0.0.1:9559"]
     }
     # The account entered must have write permission for the NebulaGraph space.

docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-neo4j.md

@@ -136,6 +136,8 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
   nebula: {
     address:{
       graph:["127.0.0.1:9669"]
+      # the address of any of the meta services.
+      # if your NebulaGraph server is in virtual network like k8s, please config the leader address of meta.
       meta:["127.0.0.1:9559"]
     }
     user: root

docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-oracle.md

@@ -151,6 +151,8 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # If there are multiple addresses, the format is "ip1:port","ip2:port","ip3:port".
       # Addresses are separated by commas.
       graph:["127.0.0.1:9669"]
+      # the address of any of the meta services.
+      # if your NebulaGraph server is in virtual network like k8s, please config the leader address of meta.
       meta:["127.0.0.1:9559"]
     }
     # The account entered must have write permission for the NebulaGraph space.

docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-orc.md

@@ -123,6 +123,8 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # If there are multiple addresses, the format is "ip1:port","ip2:port","ip3:port".
       # Addresses are separated by commas.
       graph:["127.0.0.1:9669"]
+      # the address of any of the meta services.
+      # if your NebulaGraph server is in virtual network like k8s, please config the leader address of meta.
       meta:["127.0.0.1:9559"]
     }
 

docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-parquet.md

@@ -123,6 +123,8 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # If there are multiple addresses, the format is "ip1:port","ip2:port","ip3:port".
       # Addresses are separated by commas.
       graph:["127.0.0.1:9669"]
+      # the address of any of the meta services.
+      # if your NebulaGraph server is in virtual network like k8s, please config the leader address of meta.
       meta:["127.0.0.1:9559"]
     }
 

docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-pulsar.md

@@ -102,6 +102,8 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # If there are multiple addresses, the format is "ip1:port","ip2:port","ip3:port".
       # Addresses are separated by commas.
       graph:["127.0.0.1:9669"]
+      # the address of any of the meta services.
+      # if your NebulaGraph server is in virtual network like k8s, please config the leader address of meta.
       meta:["127.0.0.1:9559"]
     }
 

docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-sst.md

@@ -191,6 +191,8 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
   nebula: {
     address:{
       graph:["127.0.0.1:9669"]
+      # the address of any of the meta services.
+      # if your NebulaGraph server is in virtual network like k8s, please config the leader address of meta.
       meta:["127.0.0.1:9559"]
     }
     user: root