dmc runs programs on other machines using ssh
usage:
$ cat mysql_master_hosts
10.0.0.1
10.0.0.2
10.0.0.3
$ cat mysql_master_hosts | dmc "grep DESCRIPTION /etc/lsb-release"
[10.0.0.1]$ grep DESCRIPTION /etc/lsb-release
DISTRIB_DESCRIPTION="Ubuntu 12.04.5 LTS"
[10.0.0.2]$ grep DESCRIPTION /etc/lsb-release
DISTRIB_DESCRIPTION="Ubuntu 12.04.5 LTS"
[10.0.0.3]$ grep DESCRIPTION /etc/lsb-release
DISTRIB_DESCRIPTION="Ubuntu 12.04.5 LTS"
$ dig master.pg.service.consul |grep -v '^;' |grep A
master.pg.service.consul. 10 IN A 10.0.0.1
master.pg.service.consul. 10 IN A 10.0.0.2
$ dmc -d master.pg.service.consul "grep DESCRIPTION /etc/lsb-release"
[10.0.0.1]$ grep DESCRIPTION /etc/lsb-release
DISTRIB_DESCRIPTION="Ubuntu 12.04.5 LTS"
[10.0.0.2]$ grep DESCRIPTION /etc/lsb-release
DISTRIB_DESCRIPTION="Ubuntu 12.04.5 LTS"
$ dmc -h
Usage of dmc:
-d="": dns name for multi-hosts
-hosts="": list of hosts
-p="": prefix for command echo
-v=false: verbose outputdmc runs all commands in parallel but prints the full output for each system as it becomes available, making it fast but also easy to read.