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[root@ftp binlogstreamer]# ./binlogstreamer -cfg=binlogstreamer.cfg
2019-04-26 18:47:31 [binlogstreamer] NOTICE Binlogstreamer started
2019-04-26 18:47:31 [binlogstreamer] NOTICE Loading configuration from binlogstreamer.cfg
2019-04-26 18:47:31 [binlogstreamer] NOTICE Configuration loaded successfully
2019-04-26 18:47:31 [binlogstreamer] NOTICE Checking remote binary logs
2019-04-26 18:47:31 [binlogstreamer] NOTICE Checking locally existing binlogs
2019-04-26 18:47:31 [binlogstreamer] NOTICE Starting binlog streaming from 10.9.168.55
2019-04-26 18:47:31 [binlogstreamer] NOTICE First binlog: mysql-bin.000029
panic: exit status 127

goroutine 23 [running]:
main.streamBinlogs(0xc4200c6af0, 0xc4200984e0, 0x3, 0x4)
/root/binlogstreamer/binlogstreamer.go:108 +0x56e
created by main.main
/root/binlogstreamer/binlogstreamer.go:51 +0x22c

[root@ftp binlogstreamer]# cat binlogstreamer.cfg
mysqlhost = 10.9.168.55
mysqlport = 38375
mysqluser = root
mysqlpass = root
mysqldb = mysql
binlogdir = /server/binlog_backup
mysqlbinlog = /server/mysql_data/mysql38375/data/
keep_days = 0 # if zero, no binlogs will be cleaned up

There is a need for cleaning binlogs older than x days

There would be great if I'd add some meaningful logging here