cockroach debug zip command connects to your cluster and gathers information from each active node into a single file (inactive nodes are not included):
- Log files
- Cluster events
- Schema change events
- Node liveness
- Gossip data
- Stack traces
- Range lists
- A list of databases and tables
- Cluster Settings
- Heap profiles
- Problem ranges
Additionally, you can run the
debug merge-logs command to merge the collected logs in one file, making it easier to parse them to locate an issue with your cluster.
The file produced by
cockroach debug zip can contain highly sensitive, unanonymized information, such as usernames, hashed passwords, and possibly your table's data. You should share this data only with Cockroach Labs developers and only after determining the most secure method of delivery.
There are two scenarios in which
debug zip is useful:
To collect all of your nodes' logs, which you can then parse to locate issues. It's important to note, though, that
debug zipcan only access logs from active nodes. See more information on this page.
If you experience severe or difficult-to-reproduce issues with your cluster, Cockroach Labs might ask you to send us your cluster's debugging information using
cockroach debug zip.
Collecting log files
When you issue the
debug zip command, the node that receives the request connects to each other node in the cluster. Once it's connected, the node requests the content of all log files stored on the node, the location of which is determined by the
--log-dir value when you started the node.
debug zip relies on CockroachDB's distributed architecture, this means that nodes not currently connected to the cluster cannot respond to the request, so their log files are not included.
After receiving the log files from all of the active nodes, the requesting node aggregates the files and writes them to an archive file you specify.
You can locate logs in the unarchived file's
debug/nodes/[node dir]/logs directories.
cockroach debug command has a few subcommands, users are expected to use only the
debug subcommands are useful only to CockroachDB's developers and contributors.
$ cockroach debug zip [ZIP file destination] [flags]
It's important to understand that the
[flags] here are used to connect to CockroachDB nodes. This means the values you use in those flags must connect to an active node. If no nodes are live, you must start at least one node.
debug zip subcommand supports the following general-use, client connection, and logging flags.
||The path to the certificate directory. The directory must contain valid certificates if running in secure mode.
||The server host to connect to. This can be the address of any node in the cluster.
||Run in insecure mode. If this flag is not set, the
||The server port to connect to.
||A connection URL to use instead of the other arguments.
Default: no URL
By default, the
debug zip command logs errors it experiences to
stderr. Note that these are errors executing
debug zip; these are not errors that the logs collected by
debug zip contain.
If you need to troubleshoot this command's behavior, you can also change its logging behavior.
Generate a debug zip file
# Generate the debug zip file for an insecure cluster: $ cockroach debug zip ./cockroach-data/logs/debug.zip --insecure
# Generate the debug zip file for a secure cluster: $ cockroach debug zip ./cockroach-data/logs/debug.zip
# Generate the debug zip file from a remote machine: $ cockroach debug zip ./crdb-debug.zip --host=126.96.36.199