MySQL Cluster Manager 9.1 Release Notes
collect logs [cluster_name]
This command collects log files and other related files from all
hosts. When the name of a cluster
(cluster_name) is supplied with the
command, it collects all the log files
(.log) as well as the configuration files
(.ini, .cnf), error
files (.err), and trace files
(.trace.log.*) used by all processes belonging to the cluster,
and also all the agent log files. If
cluster_name is omitted, only the
agent log files are collected.
When an mcmd agent receives the
collect logs command from the
mcm agent it is connected with, it sets up a
TCP server socket using port 0 by default, and lets the
operating system assign the actual port number. All agents in
the site are then instructed to perform the copying, and each of
them spawns a TCP client, which connects to the TCP server
socket set up earlier to copy the files over.
To assign a specific port manually for file copying, use the
--copy-port option when starting
mcmd. Default value for the option is 0. The
collect logs command times out
if, in 30 seconds, no connections can be established by any of
the clients or no incoming connections are detected by the TCP
server.
Warning
If a firewall or other networking issues prohibit the TCP
clients to connect to the TCP server socket, the
collect logs command will
never complete.
The collected files are put under the MySQL Cluster Manager data repository
(mcm_data in the parent directory of the
MySQL Cluster Manager installation directory) by default, or specified by the
option --data-folder) inside a
folder named collected_files, under which
the files are organized under a hierarchy that looks like the
following:
/mcm_data_repository/collected-files/
|── timestamp/
| ├── mcmd/
| | ├── mcmd#/
| | ├── mcmd.log
| | └── mcmd_timestamp.log
| | └── ...
| ├── cluster_name/
| ├── node#_nodetype/
| | ├── log files (.log)
| | ├── configuration files (.ini, .cnf)
| | ├── error files (.err)
| | └── trace files (.trace.log.*)
| ├── node#_nodetype/
| | ├── log files (.log)
| | ├── configuration files (.ini, .cnf)
| | ├── error files (.err)
| | └── trace files (.trace.log.*)
| ├── node#_nodetype/
| | └── ...
| └── other/
| ├── utilities files (.err, .out)
| └── ...
|
├── timestamp/
| ├── mcmd/
| | ├── mcmd#/
| | ├── mcmd.log
| | ├── mcmd_timestamp.log
| | └── ...
| ├── cluster_name/
| | ├── node#_nodetype/
...For example, the error log for the mysqld node of node number 146 is found at:
/opt/mcm_data/collected-files/2021-07-31T07:44:05Z/51_mysqld/mysqld_146_out.err