[TS-3364] Add command line config validation support to traffic_server

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.3.0
• Fix Version/s: 5.3.0
• Component/s: Configuration
• Assignee: Sudheer Vinukonda
• Reporter: Sudheer Vinukonda
• Created: 03/Feb/15 21:49
• Updated: 13/May/15 20:36
• Resolved: 21/Mar/15 01:51

Description

Currently, traffic_server fails to initialize when it encounters fatal errors in loading the config files during start up. During dynamic reloading of config files (e.g. via traffic_line), traffic_server rejects new config and falls back to existing/old config (however, if there was a traffic_server crash/restart subsequently, that can again result into failing to initialize).

This jira proposes to make the behavior of traffic_server when it encounters such fatal errors configurable via a new setting proxy.config.ignore_fatal_errors with the below options:

0 : All errors are fatal, do not load/reload
1 : Ignore a bad config line, continue with the rest
2 : Ignore a bad config line, stop parsing the file further
..

Based on concerns expressed, it has been agreed to not change the traffic_server's behavior to loading with fatal config. Instead, this jira will be used to add a command line option to traffic_server to load and validate the config.