# [UI_MASTERSHIP_EVENT](https://apps.juniper.net/syslog-explorer/?msg=UI_MASTERSHIP_EVENT)

## SYSLOG Details
- **Message**: <variable>mastership-event</variable> <variable>card-name</variable> mastership by '<variable>username</variable>'
- **Help**: Component mastership changed at user request
- **Description**: Some redundant routing platform components use a master/standby system in which the master component is active and the standby is inactive but ready to assume mastership. The indicated user performed the indicated operation to modify component mastership.
- **Type**: Event: This message reports an event, not an error
- **Severity**: warning
- **Cause**: -
- **Action**: -
- **Attributes**: mastership-event
card-name
username
- **Facility**: ANY

## Found this message in the following releases:
- [Junos OS 26.2R1](https://apps.juniper.net/syslog-explorer/?msg=UI_MASTERSHIP_EVENT&sw=Junos%20OS&rel=26.2R1)
- [Junos OS 25.4R1](https://apps.juniper.net/syslog-explorer/?msg=UI_MASTERSHIP_EVENT&sw=Junos%20OS&rel=25.4R1)
- [Junos OS 25.2R2](https://apps.juniper.net/syslog-explorer/?msg=UI_MASTERSHIP_EVENT&sw=Junos%20OS&rel=25.2R2)
- [Junos OS 25.2R1](https://apps.juniper.net/syslog-explorer/?msg=UI_MASTERSHIP_EVENT&sw=Junos%20OS&rel=25.2R1)
- [Junos OS 24.4R2](https://apps.juniper.net/syslog-explorer/?msg=UI_MASTERSHIP_EVENT&sw=Junos%20OS&rel=24.4R2)
- [Junos OS 24.4R1](https://apps.juniper.net/syslog-explorer/?msg=UI_MASTERSHIP_EVENT&sw=Junos%20OS&rel=24.4R1)
- [Junos OS 24.2R2](https://apps.juniper.net/syslog-explorer/?msg=UI_MASTERSHIP_EVENT&sw=Junos%20OS&rel=24.2R2)
- [Junos OS 24.2R1](https://apps.juniper.net/syslog-explorer/?msg=UI_MASTERSHIP_EVENT&sw=Junos%20OS&rel=24.2R1)
- [Junos OS 23.4R2](https://apps.juniper.net/syslog-explorer/?msg=UI_MASTERSHIP_EVENT&sw=Junos%20OS&rel=23.4R2)
- [Junos OS 23.4R1](https://apps.juniper.net/syslog-explorer/?msg=UI_MASTERSHIP_EVENT&sw=Junos%20OS&rel=23.4R1)
- [Junos OS 23.2R2](https://apps.juniper.net/syslog-explorer/?msg=UI_MASTERSHIP_EVENT&sw=Junos%20OS&rel=23.2R2)
- [Junos OS 23.2R1](https://apps.juniper.net/syslog-explorer/?msg=UI_MASTERSHIP_EVENT&sw=Junos%20OS&rel=23.2R1)
- [Junos OS 22.4R3](https://apps.juniper.net/syslog-explorer/?msg=UI_MASTERSHIP_EVENT&sw=Junos%20OS&rel=22.4R3)
- [Junos OS 22.4R2](https://apps.juniper.net/syslog-explorer/?msg=UI_MASTERSHIP_EVENT&sw=Junos%20OS&rel=22.4R2)
- [Junos OS 22.4R1](https://apps.juniper.net/syslog-explorer/?msg=UI_MASTERSHIP_EVENT&sw=Junos%20OS&rel=22.4R1)
- [Junos OS 22.2R3](https://apps.juniper.net/syslog-explorer/?msg=UI_MASTERSHIP_EVENT&sw=Junos%20OS&rel=22.2R3)
- [Junos OS 22.2R2](https://apps.juniper.net/syslog-explorer/?msg=UI_MASTERSHIP_EVENT&sw=Junos%20OS&rel=22.2R2)
- [Junos OS 22.2R1](https://apps.juniper.net/syslog-explorer/?msg=UI_MASTERSHIP_EVENT&sw=Junos%20OS&rel=22.2R1)