Changes to the text on specifying name server list.
Project: http://git-wip-us.apache.org/repos/asf/incubator-rocketmq-site/repo Commit: http://git-wip-us.apache.org/repos/asf/incubator-rocketmq-site/commit/c706e003 Tree: http://git-wip-us.apache.org/repos/asf/incubator-rocketmq-site/tree/c706e003 Diff: http://git-wip-us.apache.org/repos/asf/incubator-rocketmq-site/diff/c706e003 Branch: refs/heads/asf-site Commit: c706e003dd8dc8b4a222bbfc4b25efca502e4527 Parents: b66d708 Author: shtykh_roman <rsht...@yahoo.com> Authored: Fri Feb 10 15:57:35 2017 +0900 Committer: Zhanhui Li <lizhan...@apache.org> Committed: Fri Feb 10 16:07:44 2017 +0800 ---------------------------------------------------------------------- ...-methods-to-feed-name-server-address-list.md | 23 ++++++++++---------- 1 file changed, 11 insertions(+), 12 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/incubator-rocketmq-site/blob/c706e003/_posts/2017-02-10-four-methods-to-feed-name-server-address-list.md ---------------------------------------------------------------------- diff --git a/_posts/2017-02-10-four-methods-to-feed-name-server-address-list.md b/_posts/2017-02-10-four-methods-to-feed-name-server-address-list.md index 70984c9..aa27066 100644 --- a/_posts/2017-02-10-four-methods-to-feed-name-server-address-list.md +++ b/_posts/2017-02-10-four-methods-to-feed-name-server-address-list.md @@ -7,15 +7,15 @@ tags: - Name Server --- -Apache RocketMQ is a distributed system that each components should be properly coordinated to work smoothly. Name -servers are designed to take much of this responsibility through managing topic route information. +In Apache RocketMQ, name servers are designed to coordinate each component of the distributed system +and take much of the responsibility for managing topic route information. -The management, roughly speaking, consists two parts. The first one is that brokers report to name servers on meta data -of themselves and topics they have. The second is serving clients, including producer, consumer and command line - executables these meta data. +The management, roughly speaking, consists two parts +- Brokers send their meta data to name servers and report on topics they have. +- Name servers are serving clients, including producers, consumers and command line clients with the freshest routing information. -As a result, before launching brokers and clients, we need to feed name server address list to them. Apache RocketMQ -provides four methods to achieve this goal. +Therefore, before launching brokers and clients, we need to tell them how to reach name servers by feeding them with a name server address list. +In Apache RocketMQ, this can be done in four ways. 1. Programmatic Way @@ -50,8 +50,7 @@ provides four methods to achieve this goal. 3. Environment Variable - A third method is via environment variable: you can export `NAMESRV_ADDR` environment variable. Brokers and clients - will examine and use its value if set. + You can export `NAMESRV_ADDR` environment variable. Brokers and clients will examine and use its value if set. 4. HTTP Endpoint @@ -67,12 +66,12 @@ provides four methods to achieve this goal. You may override `jmenv.tbsite.net` by this java option: `rocketmq.namesrv.domain`, You may also override `nsaddr` part by this java option: `rocketmq.namesrv.domain.subgroup` - This method is recommended because it gives you maximum flexibility, aka, you can dynamically add or + This method is recommended because it gives you maximum flexibility -- you can dynamically add or remove name server node without necessity of rebooting your brokers and clients according to your name servers' system load. * Priority - Methods introduced first take precedence over the latter, namely, - Programmatic Way > Java Options > Environment Variable > HTTP Endpoint \ No newline at end of file + Methods introduced first take precedence over the latter, namely, <br> + `Programmatic Way > Java Options > Environment Variable > HTTP Endpoint` \ No newline at end of file
