251156eb68
This will allow to fine TUNE SOA settings sent by Consul in DNS responses, for instance to be able to control negative ttl. Will fix: https://github.com/hashicorp/consul/issues/4713 # Example Override all settings: * min_ttl: 0 => 60s * retry: 600 (10m) => 300s (5 minutes), * expire: 86400 (24h) => 43200 (12h) * refresh: 3600 (1h) => 1800 (30 minutes) ``` consul agent -dev -hcl 'dns_config={soa={min_ttl=60,retry=300,expire=43200,refresh=1800}}' ``` Result: ``` dig +multiline @localhost -p 8600 service.consul ; <<>> DiG 9.12.1 <<>> +multiline @localhost -p 8600 service.consul ; (2 servers found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 36557 ;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;service.consul. IN A ;; AUTHORITY SECTION: consul. 0 IN SOA ns.consul. hostmaster.consul. ( 1537959133 ; serial 1800 ; refresh (30 minutes) 300 ; retry (5 minutes) 43200 ; expire (12 hours) 60 ; minimum (1 minute) ) ;; Query time: 4 msec ;; SERVER: 127.0.0.1#8600(127.0.0.1) ;; WHEN: Wed Sep 26 12:52:13 CEST 2018 ;; MSG SIZE rcvd: 93 ```
Consul 
- Website: https://www.consul.io
- Chat: Gitter
- Mailing list: Google Groups
Consul is a tool for service discovery and configuration. Consul is distributed, highly available, and extremely scalable.
Consul provides several key features:
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Service Discovery - Consul makes it simple for services to register themselves and to discover other services via a DNS or HTTP interface. External services such as SaaS providers can be registered as well.
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Health Checking - Health Checking enables Consul to quickly alert operators about any issues in a cluster. The integration with service discovery prevents routing traffic to unhealthy hosts and enables service level circuit breakers.
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Key/Value Storage - A flexible key/value store enables storing dynamic configuration, feature flagging, coordination, leader election and more. The simple HTTP API makes it easy to use anywhere.
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Multi-Datacenter - Consul is built to be datacenter aware, and can support any number of regions without complex configuration.
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Service Segmentation - Consul Connect enables secure service-to-service communication with automatic TLS encryption and identity-based authorization.
Consul runs on Linux, Mac OS X, FreeBSD, Solaris, and Windows. A commercial version called Consul Enterprise is also available.
Please note: We take Consul's security and our users' trust very seriously. If you believe you have found a security issue in Consul, please responsibly disclose by contacting us at security@hashicorp.com.
Quick Start
An extensive quick start is viewable on the Consul website:
https://www.consul.io/intro/getting-started/install.html
Documentation
Full, comprehensive documentation is viewable on the Consul website:
Contributing
Thank you for your interest in contributing! Please refer to CONTRIBUTING.md for guidance.