解决 Mesos 领导大师 [英] Resolving the Mesos Leading Master
问题描述
我们使用 Mesos 在集群上运行作业.我们使用 haproxy 来指向，例如，mesos.seanmcl.com 指向 Mesos Master.
We're using Mesos to run jobs on a cluster. We're using haproxy to point, e.g., mesos.seanmcl.com to a Mesos Master.
如果 Master 恰好不是领导者，UI 将在 延迟 后将浏览器重定向到领导者，以便您可以看到正在运行的作业.由于各种原因(UI 速度、避免端口被防火墙阻止)，我真的很想以编程方式发现带有领导者的主机.我不知道如何做到这一点.
If that Master happens to not be the leader, the UI will redirect the browser, after a delay, to the leader so you can see the running jobs. For various reasons (UI speed, avoiding ports blocked by a firewall), I'd really like to programmatically discover the host with the leader. I can not figure out how to do this.
我搜索了 Mesos 的 Zookeeper 文件，但只找到了少量主机信息，例如 IP 地址.有没有什么办法，通过Mesos CLI、Zookeeper CLI等找到Mesos Leadership Master?
I grepped around in the Zookeeper files for Mesos, but only found small bits of host information like the IP address. Is there any way, via Mesos CLI, Zookeeper CLI, etc. to find the Mesos Leading Master?
推荐答案
您可以使用 Mesos 本身使用的方法来确定 Leading Master 使用 Zookeeper 通讯.
You can use the approach used by Mesos itself to determine the Leading Master using Zookeeper communications.
这个想法是使用 Zookeeper 通信中的成员标签来确定 Leading Master，缓存它并将其用于后续请求.检查以下链接的实现:
The idea is to use the membership labels in Zookeeper communications to determine the Leading Master, cache it and use it for the subsequent requests. Check the following links for the implementation:
这是使用 CLI 的示例代码:
Here's an example code using CLI:
或者，您可以使用 Mesos-CLI 中的命令 resolve 返回 host/port对于当前的 Leading Master，它使用位于 Mesos 核心中的 Mesos-Resolve 代码:
Alternatively you can use the command resolve in Mesos-CLI which returns the host/port for the current Leading Master which uses Mesos-Resolve code located in the Mesos core:
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