Application to support consul leader election.
Acquires a consul session for a given key.
Exits with 0 if the local node successfully acquired the session or owns the session for the given key.
Exits with 1 if the local node is not able to acquire the session and not owner of the session for the given key.
Exits with 2 on error.
With -leader-tag and -not-leader-tag you can tag a service based on the leader election outcome.
-key
Name of the key, which will be used to do leader election. All nodes that are participating should agree on a given key to coordinate.
-key-value
Value of the key (-key). (Default: consul node name)
-session-name
Name of the session, which will be used to acquire the key (-key). (Default: -key)
-session-lock-delay
The session's lock-delay time in seconds. (Default: 1)
-health-check
Health checks, which will be used for the session. Can be used more than once. (serfHealth is set by default)
-leader-exit-code
Overwrite exit code if leader. (Default: 0)
-not-leader-exit-code
Overwrite exit code if not leader. (Default: 1)
-error-exit-code
Overwrite exit code for errors. (Default: 2)
-service-name
Name of the service you want to tag.
-leader-tag
Tag which will be set to -service-name if leader.
-not-leader-tag
Tag which will be set to -service-name if not leader.
Copyright 2017 ATVAG GmbH
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.