fsconsul writes data to the filesystem by reading it from Consul's K/V store.
fsconsul allows configuration data to be placed on disk without a consuming application needing to know about the existence of Consul. This makes it especially easy to configure applications throughout all your environments: development, testing, production, etc. On any change, fsconsul will run the provided command, so you can perform any additional actions (restarting your application, for example) necessary.
fsconsul is a port of envconsul which in turn was inspired by envdir in its simplicity, name, and function.
To install fsconsul, clone this repo into your go workspace and do a go install.
fsconsul can be configured entirely by command-line switches, but for more complex cases, you may wish to provide the path to a config JSON file as the -configFile switch. The format of the JSON file is:
{
"consul" : {
"addr": "127.0.0.1:8500"
"dc": "dc1",
"token" : "my-reader-token"
},
"mappings" : [{
"onchange": "service restart app1",
"prefix": "/myteam/dev/app1/config/",
"path": "/etc/app1/",
"keystore": "/var/lib/encryption_keys"
},{
"onchange": "service restart app2",
"prefix": "/myteam/dev/app2/config/",
"path": "/etc/app2/",
"keystore": "/var/app2/encryption_keys"
}]
}
Run fsconsul to see the usage help:
$ fsconsul
Usage: fsconsul [options] prefix path onchange
Write files to the specified locations on the local system by reading K/Vs
from Consul's K/V store with the given prefixes and executing a program on
any change. Prefixes and paths must be pipe-delimited if provided as
command-line switches.
Options:
-addr="": consul HTTP API address with port
-configFile="": json file containing all configuration (if this is provided, all other config is ignored)
-dc="": consul datacenter, uses local if blank
-keystore="": directory of keys used for decryption
-once=false: run once and exit
-token="": token to use for ACL access
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