log configuration environment options

Author: nekufa

Diff for: README.md

@@ -291,6 +291,15 @@ Default is 3600 (every 1 hour).
 
 Optional. When set to "true" Tarantool tries to continue if there is an error while reading a snapshot file or a write-ahead log file. Skips invalid records, reads as much data as possible, print a warning in console and start the database.
 
+### `TARANTOOL_LOG_FORMAT`
+
+Optional. There are two possible log formats - 'plain' (default) or 'json' (with more detail and with json labels).
+More details can be found in [log module reference](https://www.tarantool.io/en/doc/latest/reference/configuration/#confval-log_format)
+
+### `TARANTOOL_LOG_LEVEL`
+
+Optional. Default value is 5 (that means INFO). More details can be found in [logging log levels configuration](https://www.tarantool.io/en/doc/latest/reference/configuration/#cfg-logging-log-level)
+
 # Reporting problems and getting help
 
 You can report problems and request

Diff for: files/tarantool-entrypoint.lua

@@ -182,6 +182,8 @@ local function wrapper_cfg(override)
         file_cfg.TARANTOOL_SLAB_ALLOC_MAXIMAL = os.getenv('TARANTOOL_SLAB_ALLOC_MAXIMAL')
         file_cfg.TARANTOOL_PORT = os.getenv('TARANTOOL_PORT')
         file_cfg.TARANTOOL_FORCE_RECOVERY = os.getenv('TARANTOOL_FORCE_RECOVERY')
+        file_cfg.TARANTOOL_LOG_FORMAT = os.getenv('TARANTOOL_LOG_FORMAT')
+        file_cfg.TARANTOOL_LOG_LEVEL = os.getenv('TARANTOOL_LOG_LEVEL')
         file_cfg.TARANTOOL_WAL_MODE = os.getenv('TARANTOOL_WAL_MODE')
         file_cfg.TARANTOOL_REPLICATION_SOURCE = os.getenv('TARANTOOL_REPLICATION_SOURCE')
         file_cfg.TARANTOOL_REPLICATION = os.getenv('TARANTOOL_REPLICATION')
@@ -236,6 +238,8 @@ local function wrapper_cfg(override)
         override.wal_mode
 
     cfg.force_recovery = file_cfg.TARANTOOL_FORCE_RECOVERY == 'true'
+    cfg.log_format = file_cfg.TARANTOOL_LOG_FORMAT or 'plain'
+    cfg.log_level = tonumber(file_cfg.TARANTOOL_LOG_LEVEL) or 5
 
     cfg.wal_dir = override.wal_dir or '/var/lib/tarantool'
     cfg.vinyl_dir = override.vinyl_dir or '/var/lib/tarantool'

Diff for: files/tarantool_set_config.lua

@@ -87,6 +87,8 @@ local vars = {
     TARANTOOL_SLAB_ALLOC_MINIMAL=nop,
     TARANTOOL_PORT=nop,
     TARANTOOL_FORCE_RECOVERY=nop,
+    TARANTOOL_LOG_FORMAT=nop,
+    TARANTOOL_LOG_LEVEL=nop,
     TARANTOOL_WAL_MODE=nop,
     TARANTOOL_USER_NAME=update_credentials,
     TARANTOOL_USER_PASSWORD=update_credentials,