galera-log-explainer

README

galera-log-explainer

Filter, aggregate and summarize multiple galera logs together.

Features

• List events in chronological order from any number of nodes
• List key points of information from logs (sst, view changes, general errors, maintenance operations)
• Translate advanced Galera information to a easily readable counterpart
• Filter on dates with --since, --until
• Filter on type of events
• Aggregates rotated logs together, even when there are logs from multiple nodes

Get the latest cluster changes on a local server

galera-log-explainer list --all --since 2023-01-05T03:24:26.000000Z /var/log/mysql/*.log

Or gather every log files and compile them

galera-log-explainer list --all *.log

Find out information about nodes, using any type of info

galera-log-explainer whois '218469b2' mysql.log 
{
	"input": "218469b2",
	"IPs": [
		"172.17.0.3"
	],
	"nodeNames": [
		"galera-node2"
	],
	"hostname": "",
	"nodeUUIDs:": [
		"218469b2",
		"259b78a0",
		"fa81213d",
	]
}

You can find information from UUIDs, IPs, node names

galera-log-explainer whois '172.17.0.3' mysql.log 

galera-log-explainer whois 'galera-node2' mysql.log 

Automatically translate every information (IP, UUID) from a log

galera-log-explainer sed some/log.log another/one.log to_translate.log < to_translate.log  | less

cat to_translate.log | galera-log-explainer sed some/log.log another/one.log to_translate.log | less

Or get the raw sed command to do it yourself

galera-log-explainer sed some/log.log another/one.log to_translate.log

Usage:

$ galera-log-explainer --help
Usage: galera-log-explainer <command>

An utility to transform Galera logs in a readable version

Flags:
  -h, --help               Show context-sensitive help.
      --no-color
      --since=SINCE        Only list events after this date, you can copy-paste a date from mysql
                           error log
      --until=UNTIL        Only list events before this date, you can copy-paste a date from mysql
                           error log
      --verbosity=1        0: Info, 1: Detailed, 2: DebugMySQL (every mysql info the tool used), 3:
                           Debug (internal tool debug)
      --pxc-operator       Analyze logs from Percona PXC operator. Off by default because it
                           negatively impacts performance for non-k8s setups
      --exclude-regexes=EXCLUDE-REGEXES,...
                           Remove regexes from analysis. List regexes using 'galera-log-explainer
                           regex-list'
      --grep-cmd="grep"    'grep' command path. Could need to be set to 'ggrep' for darwin systems
      --grep-args="-P"     'grep' arguments. perl regexp (-P) is necessary. -o will break the tool

Commands:
  list <paths> ...

  whois <search> <paths> ...

  sed <paths> ...

  ctx <paths> ...

  regex-list

Run "galera-log-explainer <command> --help" for more information on a command.

Compatibility

• Percona XtraDB Cluster: 5.5 to 8.0
• MariaDB Galera Cluster: 10.0 to 10.6
• Galera logs from K8s pods