reduce config items (#978)

Signed-off-by: lucklove <gnu.crazier@gmail.com>

Author: lucklove

conf/pd.yml

@@ -5,27 +5,11 @@ global:
   # lease: 3
   # tso-save-interval: "3s"
 
-  # namespace-classifier: "table"
-
-  # enable-prevote: true
-
 security:
-  # Path of file that contains list of trusted SSL CAs. if set, following four settings shouldn't be empty
-  # cacert-path: ""
-  # Path of file that contains X509 certificate in PEM format.
-  # cert-path: ""
-  # Path of file that contains X509 key in PEM format.
-  # key-path: ""
 
 log:
   #level: "info"
 
-  # log format, one of json, text, console
-  # format: "text"
-
-  # disable automatic timestamps in output
-  # disable-timestamp: false
-
   # file logging
   file:
     # max log file size in MB
@@ -38,7 +22,7 @@ log:
     # log-rotate: true
 
 metric:
-
+    
 schedule:
   # max-merge-region-size: 20
   # max-merge-region-keys: 200000

conf/tidb.yml

@@ -7,16 +7,9 @@ global:
   # The socket file to use for connection.
   # socket: ""
 
-  # Run ddl worker on this tidb-server.
-  # run-ddl: true
-
   # Schema lease duration, very dangerous to change only if you know what you do.
   # lease: "45s"
 
-  # When create table, split a separated region for it. It is recommended to
-  # turn off this option if there will be a large number of tables created.
-  # split-table: true
-
   # The limit of concurrent executed sessions.
   # token-limit: 1000
 
@@ -27,12 +20,6 @@ global:
   # Set the memory quota for a query in bytes. Default: 32GB
   # mem-quota-query: 34359738368
 
-  # Enable coprocessor streaming.
-  # enable-streaming: false
-
-  # Set system variable 'lower_case_table_names'
-  # lower-case-table-names: 2
-
   # Make "kill query" behavior compatible with MySQL. It's not recommend to
   # turn on this option when TiDB server is behind a proxy.
   # compatible-kill-query: false
@@ -44,57 +31,25 @@ log:
   # Log level: debug, info, warn, error, fatal.
   # level: "info"
 
-  # Log format, one of json, text, console.
-  # format: "text"
-
-  # Disable automatic timestamps in output
-  # disable-timestamp: false
-
   # Queries with execution time greater than this value will be logged. (Milliseconds)
   # slow-threshold: 300
 
   # Queries with internal result greater than this value will be logged.
   # expensive-threshold: 10000
 
-  # Maximum query length recorded in log.
-  # query-log-max-len: 2048
-
-  # File logging.
-  file:
-    # Max log file size in MB. (upper limit to 4096MB).
-    # max-size: 300
-
-    # Max log file keep days. No clean up by default.
-    # max-days: 0
-
-    # Maximum number of old log files to retain. No clean up by default.
-    # max-backups: 0
-
-    # Rotate log by day
-    # log-rotate: true
-
-security:
-  # Path of file that contains list of trusted SSL CAs for connection with mysql client.
-  # ssl-ca: ""
-
-  # Path of file that contains X509 certificate in PEM format for connection with mysql client.
-  # ssl-cert: ""
-
-  # Path of file that contains X509 key in PEM format for connection with mysql client.
-  # ssl-key: ""
-
-  # Path of file that contains list of trusted SSL CAs for connection with cluster components.
-  # cluster-ssl-ca: ""
+status:
+  # TiDB status host.
+  # status-host = "0.0.0.0"
 
-  # Path of file that contains X509 certificate in PEM format for connection with cluster components.
-  # cluster-ssl-cert: ""
+  # Prometheus pushgateway address, leaves it empty will disable prometheus push.
+  # TiDB status port.
+  # status-port = 10080
 
-  # Path of file that contains X509 key in PEM format for connection with cluster components.
-  # cluster-ssl-key: ""
+  # Prometheus pushgateway address, leaves it empty will disable prometheus push.
+  # metrics-addr = ""
 
-status:
-  # If enable status report HTTP service.
-  # report-status: true
+  # Prometheus client push interval in second, set \"0\" to disable prometheus push.
+  # metrics-interval = 15
 
 performance:
   # Max CPUs to use, 0 use number of CPUs in the machine.
@@ -106,39 +61,10 @@ performance:
   # StmtCountLimit limits the max count of statement inside a transaction.
   # stmt-count-limit: 5000
 
-  # Set keep alive option for tcp connection.
-  # tcp-keep-alive: true
-
-  # Whether support cartesian product.
-  # cross-join: true
-
   # Stats lease duration, which influences the time of analyze and stats load.
   # stats-lease: "3s"
 
-  # Run auto analyze worker on this tidb-server.
-  # run-auto-analyze: true
-
-  # Probability to use the query feedback to update stats, 0 or 1 for always false/true.
-  # feedback-probability: 0.05
-
-  # The max number of query feedback that cache in memory.
-  # query-feedback-limit: 1024
-
-  # Pseudo stats will be used if the ratio between the modify count and
-  # row count in statistics of a table is greater than it.
-  # pseudo-estimate-ratio: 0.8
-
-  # Force the priority of all statements in a specified priority.
-  # The value could be "NO_PRIORITY", "LOW_PRIORITY", "HIGH_PRIORITY" or "DELAYED".
-  # force-priority: "NO_PRIORITY"
-
 proxy_protocol:
-  # PROXY protocol acceptable client networks.
-  # Empty string means disable PROXY protocol, * means all networks.
-  # networks: ""
-
-  # PROXY protocol header read timeout, unit is second
-  # header-timeout: 5
 
 prepared_plan_cache:
   # enabled: false
@@ -224,10 +150,6 @@ tikv_client:
   # batch-wait-size: 8
 
 txn_local_latches:
-  # Enable local latches for transactions. Enable it when
-  # there are lots of conflicts between transactions.
-  # enabled: false
-  # capacity: 2048000
 
 binlog:
   # WriteTimeout specifies how long it will wait for writing binlog to pump.