docs: add backend configuration to metasrv doc (#1134)

Co-authored-by: Yiran <cuiyiran3@gmail.com>
GreptimeTeam · Aug 22, 2024 · 804708b · 804708b
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diff --git a/docs/user-guide/operations/configuration.md b/docs/user-guide/operations/configuration.md
@@ -557,7 +557,7 @@ data_home = "/tmp/metasrv/"
 bind_addr = "127.0.0.1:3002"
 # The communication server address for frontend and datanode to connect to metasrv,  "127.0.0.1:3002" by default for localhost.
 server_addr = "127.0.0.1:3002"
-# Etcd server addresses, "127.0.0.1:2379" by default.
+# Store server address, "127.0.0.1:2379" by default with etcd store.
 store_addr = "127.0.0.1:2379"
 # Datanode selector type.
 # - "lease_based" (default value).
@@ -571,6 +571,8 @@ use_memory_store = false
 ## - Using Remote WAL
 ## - Using shared storage (e.g., s3).
 enable_region_failover = false
+# The datastore for meta server.
+backend = "EtcdStore"
 
 ## Procedure storage options.
 [procedure]

diff --git a/...h/docusaurus-plugin-content-docs/current/user-guide/operations/configuration.md b/...h/docusaurus-plugin-content-docs/current/user-guide/operations/configuration.md
@@ -546,7 +546,7 @@ data_home = "/tmp/metasrv/"
 bind_addr = "127.0.0.1:3002"
 # frontend 和 datanode 连接到 metasrv 的通信服务器地址，本地默认为 "127.0.0.1:3002"。
 server_addr = "127.0.0.1:3002"
-# Etcd 服务器地址，默认为 "127.0.0.1:2379"。
+# metasrv 存储端服务器地址，默认为 "127.0.0.1:2379"。
 store_addr = "127.0.0.1:2379"
 # Datanode 选择器类型。
 # - "lease_based" (默认值)
@@ -560,6 +560,8 @@ use_memory_store = false
 ## - 使用 Remote WAL
 ## - 使用共享存储（例如 s3）。
 enable_region_failover = false
+# metasrv 的数据库类型.
+backend = "EtcdStore"
 
 ## Procedure 选项
 [procedure]