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Merge pull request #17891 from splunk/splunk-logger-support-for-tag-env-labels

Allow configurable metadata for Splunk log driver
This commit is contained in:
Alexander Morozov 2015-11-16 10:11:27 -08:00
commit a3065fa48f
3 changed files with 45 additions and 21 deletions

View file

@ -337,7 +337,7 @@ __docker_log_driver_options() {
local journald_options="env labels"
local json_file_options="env labels max-file max-size"
local syslog_options="syslog-address syslog-facility tag"
local splunk_options="splunk-caname splunk-capath splunk-index splunk-insecureskipverify splunk-source splunk-sourcetype splunk-token splunk-url"
local splunk_options="env labels splunk-caname splunk-capath splunk-index splunk-insecureskipverify splunk-source splunk-sourcetype splunk-token splunk-url tag"
local all_options="$fluentd_options $gelf_options $journald_options $json_file_options $syslog_options $splunk_options"

View file

@ -16,6 +16,7 @@ import (
"github.com/Sirupsen/logrus"
"github.com/docker/docker/daemon/logger"
"github.com/docker/docker/daemon/logger/loggerutils"
"github.com/docker/docker/pkg/urlutil"
)
@ -29,6 +30,9 @@ const (
splunkCAPathKey = "splunk-capath"
splunkCANameKey = "splunk-caname"
splunkInsecureSkipVerifyKey = "splunk-insecureskipverify"
envKey = "env"
labelsKey = "labels"
tagKey = "tag"
)
type splunkLogger struct {
@ -50,9 +54,10 @@ type splunkMessage struct {
}
type splunkMessageEvent struct {
Line string `json:"line"`
ContainerID string `json:"containerId"`
Source string `json:"source"`
Line string `json:"line"`
Source string `json:"source"`
Tag string `json:"tag,omitempty"`
Attrs map[string]string `json:"attrs,omitempty"`
}
func init() {
@ -126,6 +131,13 @@ func New(ctx logger.Context) (logger.Logger, error) {
nullMessage.SourceType = ctx.Config[splunkSourceTypeKey]
nullMessage.Index = ctx.Config[splunkIndexKey]
tag, err := loggerutils.ParseLogTag(ctx, "{{.ID}}")
if err != nil {
return nil, err
}
nullMessage.Event.Tag = tag
nullMessage.Event.Attrs = ctx.ExtraAttributes(nil)
logger := &splunkLogger{
client: client,
transport: transport,
@ -146,11 +158,8 @@ func (l *splunkLogger) Log(msg *logger.Message) error {
// Construct message as a copy of nullMessage
message := *l.nullMessage
message.Time = fmt.Sprintf("%f", float64(msg.Timestamp.UnixNano())/1000000000)
message.Event = splunkMessageEvent{
Line: string(msg.Line),
ContainerID: msg.ContainerID,
Source: msg.Source,
}
message.Event.Line = string(msg.Line)
message.Event.Source = msg.Source
jsonEvent, err := json.Marshal(&message)
if err != nil {
@ -201,6 +210,9 @@ func ValidateLogOpt(cfg map[string]string) error {
case splunkCAPathKey:
case splunkCANameKey:
case splunkInsecureSkipVerifyKey:
case envKey:
case labelsKey:
case tagKey:
default:
return fmt.Errorf("unknown log opt '%s' for %s log driver", key, driverName)
}

View file

@ -32,16 +32,22 @@ You can set the logging driver for a specific container by using the
You can use the `--log-opt NAME=VALUE` flag to specify these additional Splunk
logging driver options:
- `splunk-token` required, Splunk HTTP Event Collector token
- `splunk-url` required, path to your Splunk Enterprise or Splunk Cloud instance
(including port and schema used by HTTP Event Collector) `https://your_splunk_instance:8088`
- `splunk-source` optional, event source
- `splunk-sourcetype` optional, event source type
- `splunk-index` optional, event index
- `splunk-capath` optional, path to root certificate
- `splunk-caname` optional, name to use for validating server
certificate; by default the hostname of the `splunk-url` will be used
- `splunk-insecureskipverify` optional, ignore server certificate validation
| Option | Required | Description |
|-----------------------------|----------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `splunk-token` | required | Splunk HTTP Event Collector token. |
| `splunk-url` | required | Path to your Splunk Enterprise or Splunk Cloud instance (including port and schema used by HTTP Event Collector) `https://your_splunk_instance:8088`. |
| `splunk-source` | optional | Event source. |
| `splunk-sourcetype` | optional | Event source type. |
| `splunk-index` | optional | Event index. |
| `splunk-capath` | optional | Path to root certificate. |
| `splunk-caname` | optional | Name to use for validating server certificate; by default the hostname of the `splunk-url` will be used. |
| `splunk-insecureskipverify` | optional | Ignore server certificate validation. |
| `tag` | optional | Specify tag for message, which interpret some markup. Default value is `{{.ID}}` (12 characters of the container ID). Refer to the [log tag option documentation](log_tags.md) for customizing the log tag format. |
| `labels` | optional | Comma-separated list of keys of labels, which should be included in message, if these labels are specified for container. |
| `env` | optional | Comma-separated list of keys of environment variables, which should be included in message, if these variables are specified for container. |
If there is collision between `label` and `env` keys, the value of the `env` takes precedence.
Both options add additional fields to the attributes of a logging message.
Below is an example of the logging option specified for the Splunk Enterprise
instance. The instance is installed locally on the same machine on which the
@ -51,6 +57,12 @@ The `SplunkServerDefaultCert` is automatically generated by Splunk certificates.
docker run --log-driver=splunk \
--log-opt splunk-token=176FCEBF-4CF5-4EDF-91BC-703796522D20 \
--log-opt splunk-url=https://localhost:8088 \
--log-opt splunk-capath=/opt/splunk/etc/auth/cacert.pem \
--log-opt splunk-url=https://splunkhost:8088 \
--log-opt splunk-capath=/path/to/cert/cacert.pem \
--log-opt splunk-caname=SplunkServerDefaultCert
--log-opt tag="{{.Name}}/{{.FullID}}"
--log-opt labels=location
--log-opt env=TEST
--env "TEST=false"
--label location=west
your/application