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Create troubleshoot.md (#3585)

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Wang Jie 2017-06-21 02:21:12 +08:00 committed by Misty Stanley-Jones
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commit 4801b38ba9
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swarm/swarm_at_scale/troubleshoot.md
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@ -1,12 +1,12 @@
---
advisory: swarm-standalone
hide_from_sitemap: true
description: Try Swarm at scale
keywords: docker, swarm, scale, voting, application, certificates
redirect_from:
- /swarm/swarm_at_scale/05-troubleshoot/
title: Troubleshoot the application
---
---
advisory: swarm-standalone
hide_from_sitemap: true
description: Try Swarm at scale
keywords: docker, swarm, scale, voting, application, certificates
redirect_from:
- /swarm/swarm_at_scale/05-troubleshoot/
title: Troubleshoot the application
---
It's a fact of life that things fail. With this in mind, it's important to
understand what happens when failures occur and how to mitigate them. The
@ -26,7 +26,7 @@ following sections cover different failure scenarios:
In it's current configuration, the Swarm cluster only has single manager
container running on a single node. If the container exits or the node fails,
you will not be able to administer the cluster until you either; fix it, or
you will not be able to administer the cluster until you either fix it, or
replace it.
If the failure is the Swarm manager container unexpectedly exiting, Docker will
@ -90,9 +90,9 @@ server containers running". In this scenario, if the number of web containers
drops below 10, the tool will attempt to start more.
In our simple voting-app example, the front-end is scalable and serviced by a
load balancer. In the event that on the of the two web containers fails (or the
node that is hosting it), the load balancer will stop routing requests to it and
send all requests the surviving web container. This solution is highly scalable
load balancer. In the event that one of the two web containers fails (or the
node that is hosting it fails), the load balancer will stop routing requests to it and
send all requests to the surviving web container. This solution is highly scalable
meaning you can have up to *n* web containers behind the load balancer.
## Interlock load balancer failures
@ -134,7 +134,7 @@ infrastructure. You should also consider deploying more.
## Redis failures
If the a `redis` container fails, it's partnered `voting-app` container will
If the `redis` container fails, its partnered `voting-app` container will
not function correctly. The best solution in this instance might be to configure
health monitoring that verifies the ability to write to each Redis instance. If
an unhealthy `redis` instance is encountered, remove the `voting-app` and