# Failed to start mysql when adding node2 to my percona xtradb cluster 5.7

**URL:** <https://forums.percona.com/t/failed-to-start-mysql-when-adding-node2-to-my-percona-xtradb-cluster-5-7/21093>\
**Category:** Percona XtraDB Cluster 5.x\
**Created:** [March 31, 2023, 8:40am UTC](https://forums.percona.com/t/failed-to-start-mysql-when-adding-node2-to-my-percona-xtradb-cluster-5-7/21093 "2023-03-31T08:40:04Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Aldrin\_John\_Lagrimas](https://avatars.discourse-cdn.com/v4/letter/a/5f8ce5/32.png) [@Aldrin\_John\_Lagrimas](https://forums.percona.com/u/Aldrin_John_Lagrimas)\
**Post date:** [March 31, 2023, 8:40am UTC](https://forums.percona.com/t/failed-to-start-mysql-when-adding-node2-to-my-percona-xtradb-cluster-5-7/21093/1 "2023-03-31T08:40:05Z")

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Here is the error code

2023-03-31T08:37:20.941593Z 0 [Warning] WSREP: error while trying to listen ‘tcp://0.0.0.0:4567?socket.non\_blocking=1’, asio error ‘bind: Address already in use’  
2023-03-31T08:37:20.941822Z 0 [ERROR] WSREP: failed to open gcomm backend connection: 98: error while trying to listen ‘tcp://0.0.0.0:4567?socket.non\_blocking=1’, asio error ‘bind: Address already in use’: 98 (Address already in use)  
at gcomm/src/asio\_tcp.cpp:listen():937  
2023-03-31T08:37:20.942025Z 0 [ERROR] WSREP: gcs/src/gcs\_core.cpp:gcs\_core\_open():208: Failed to open backend connection: -98 (Address already in use)  
2023-03-31T08:37:20.942213Z 0 [Note] WSREP: gcomm: terminating thread  
2023-03-31T08:37:20.942476Z 0 [Note] WSREP: gcomm: joining thread  
2023-03-31T08:37:20.942733Z 0 [ERROR] WSREP: gcs/src/gcs.cpp:gcs\_open():1577: Failed to open channel ‘pxc-cluster’ at ‘gcomm://10.16.47.28,10.16.49.86’: -98 (Address already in use)  
2023-03-31T08:37:20.942937Z 0 [ERROR] WSREP: gcs connect failed: Address already in use  
2023-03-31T08:37:20.943123Z 0 [ERROR] WSREP: Provider/Node (gcomm://10.16.47.28,10.16.49.86) failed to establish connection with cluster (reason: 7)  
2023-03-31T08:37:20.943283Z 0 [ERROR] Aborting

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<div class="post-metadata">

**Author:** ![ljfreke](https://avatars.discourse-cdn.com/v4/letter/l/7ba0ec/32.png) [@ljfreke](https://forums.percona.com/u/ljfreke)\
**Post date:** [March 31, 2023, 9:57am UTC](https://forums.percona.com/t/failed-to-start-mysql-when-adding-node2-to-my-percona-xtradb-cluster-5-7/21093/2 "2023-03-31T09:57:27Z")

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Something is already listening on port 4567 on your machine which is stopping Galera from binding to that port. Are you trying to run more than one node on a single server/OS?

You can try and track down the process that is currently listening on port 4567 by running

```auto
netstat -lnp | grep 4567

```

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<div class="post-metadata">

**Author:** ![Leonardo\_Figueroa](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/leonardo_figueroa/32/8187_2.png) [@Leonardo\_Figueroa](https://forums.percona.com/u/Leonardo_Figueroa)\
**Post date:** [April 6, 2023, 5:26pm UTC](https://forums.percona.com/t/failed-to-start-mysql-when-adding-node2-to-my-percona-xtradb-cluster-5-7/21093/3 "2023-04-06T17:26:15Z")

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It would be either the port is in use by another process, or that the node is already running and you’re trying to start it again