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Explain node liveness #4475

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awoods187 opened this issue Mar 8, 2019 · 4 comments · Fixed by #6322
Closed

Explain node liveness #4475

awoods187 opened this issue Mar 8, 2019 · 4 comments · Fixed by #6322
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@rmloveland
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O-product T-missing-info

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@awoods187
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Explain the causes of node liveness, how to diagnose that its the problem, and what to do as a result.
@awoods187
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this needs to go wherever we store frequent problems for people to debug

@jseldess
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@awoods187, can you please provide more details about the specific problem or resources to look at?

@awoods187
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Node liveness is a frequent problem users encounter. See:
A customer experienced an outage due to node liveness
Another customer experienced a dead node due to node liveness
General node liveness problems

Node liveness is often a symptom of other problems. We should have a page that people can search for when they get node liveness errors that says that they are symptoms, here are some common causes, and what information they should collect and share with us for support when needed.

@rmloveland rmloveland assigned rmloveland and unassigned rmloveland Jan 10, 2020
@rmloveland
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Related to (but really a subset of) #6319 .

rmloveland added a commit that referenced this issue Jan 10, 2020
@rmloveland
Update cluster troubleshooting with node liveness
6438d1b 
Fixes #4475.

Summary of changes:

- Add new 'Node liveness' section to the 'Troubleshoot cluster setup'
  page, including:

  - What it is

  - How the system checks for it

  - Causes of common problems with node liveness (overloaded disk /
    busted network connectivity)
@rmloveland rmloveland mentioned this issue Jan 10, 2020
Merged
@rmloveland rmloveland mentioned this issue Jan 10, 2020
Closed
rmloveland added a commit that referenced this issue Jan 22, 2020
@rmloveland
Update cluster troubleshooting with node liveness
af03b4e 
Fixes #4475.

Summary of changes:

- Add new 'Node liveness' section to the 'Troubleshoot cluster setup'
  page, including:

  - What it is

  - Common causes of problems with it (overloaded disk / busted network
    connectivity)

  - Several places to check for it in the Admin UI
rmloveland added a commit that referenced this issue Feb 5, 2020
@rmloveland
Update cluster troubleshooting with node liveness
a054377 
Fixes #4475.

Summary of changes:

- Add new 'Node liveness' section to the 'Troubleshoot cluster setup'
  page, including:

  - What it is

  - Common causes of problems with it (overloaded disk / busted network
    connectivity)

  - Several places to check for it in the Admin UI, including expected
    values for a healthy cluster
rmloveland added a commit that referenced this issue Feb 12, 2020
@rmloveland
Update cluster troubleshooting with node liveness
3944e4f 
Fixes #4475.

Summary of changes (applies to 19.2 and 20.1 docs):

- Add new 'Node liveness' section to the 'Troubleshoot cluster setup'
  page, including:

  - What node liveness is

  - Common causes of problems (overloaded disk / busted network
    connectivity)

  - Several places to check for it in the Admin UI, including expected
    values for a healthy cluster
rmloveland added a commit that referenced this issue Feb 12, 2020
@rmloveland
Update cluster troubleshooting with node liveness
6c56997 
Fixes #4475.

Summary of changes (applies to 19.2 and 20.1 docs):

- Add new 'Node liveness' section to the 'Troubleshoot cluster setup'
  page, including:

  - What node liveness is

  - Common causes of problems (overloaded disk / busted network
    connectivity)

  - Several places to check for it in the Admin UI, including expected
    values for a healthy cluster
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Update cluster troubleshooting with node liveness cockroachdb/docs
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@rmloveland @jseldess @awoods187