collect logs [
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
.err), and trace files
(.trace.log.*) used by all processes belonging to the cluster,
and also all the agent log files.
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, 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.
If a firewall or other networking issues prohibit the TCP
clients to connect to the TCP server socket, the
command will never complete.
The collected files are put under the MySQL Cluster Manager data repository
/opt/mcm_data/ by default, or specified by
inside a folder named
under which the files are organized under a hierarchy of
timestamps [for the file collections] and then host names; below
the host name level, the file organization mimics that on the
host. For example, the agent log for the host
tonfisk, collected on 2014-07-31 at
07:44:05, is found at:
cluster_name is omitted, only the
agent log files are collected.