Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Update bootstrapping operational guide #967

Merged
merged 4 commits into from
Sep 28, 2018
Merged
Changes from 1 commit
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion docs/operational_guide/bootstrapping.md
Original file line number Diff line number Diff line change
Expand Up @@ -71,7 +71,7 @@ In this case, the `peers` bootstrapper running on node A will not be able to ful
└─────────────────────────┘ └───────────────────────┘ └──────────────────────┘
```

Note that a bootstrap consistency level of majority is the default value, but can be modified by changing the value of the key "m3db.client.bootstrap-consistency-level" in [etcd](https://coreos.com/etcd/) to one of: "none", "one", "unstrict_majority" (attempt to read from majority, but settle for less if any errors occur), "majority" (strict majority), and "all". For example, if an entire cluster with a replication factor of 3 was restarted simultaneously, all the nodes would get stuck in an infinite loop trying to peer bootstrap from each other and not achieving majority until an operator modified this value.
Note that a bootstrap consistency level of majority is the default value, but can be modified by changing the value of the key `m3db.client.bootstrap-consistency-level` in [etcd](https://coreos.com/etcd/) to one of: `none`, `one`, `unstrict_majority` (attempt to read from majority, but settle for less if any errors occur), `majority` (strict majority), and `all`. For example, if an entire cluster with a replication factor of 3 was restarted simultaneously, all the nodes would get stuck in an infinite loop trying to peer bootstrap from each other and not achieving majority until an operator modified this value. Note that this can happen even if all the shards were in the `Available` state because M3DB nodes will reject all read requests for a shard until they have bootstrapped that shard (which has to happen everytime the node is restarted.)
Copy link
Collaborator

@benraskin92 benraskin92 Sep 28, 2018

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

majority => majority (first line)

Copy link
Collaborator

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Pull out . at the end

Copy link
Contributor Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

done and done


**Note**: Any bootstrappers configuration that does not include the `peers` bootstrapper will be unable to handle dynamic placement changes of any kind.

Expand Down