replicant Unable to join cluster

我的意思是以前的 replicant 也是多多少少都有点 bug 的,没稳定。用起来也不好用。到时出问题也不没修,直接不用就行了。
最高的版本就是 v5.7.2:
breaking change 可以看这里

  • #13526 Removed the Core-replicant feature from the Open-Source Edition. Starting from release 5.8, all nodes running the Open-Source Edition will operate in the Core role. This change does not impact Enterprise Edition users, who will continue to have access to the Core-replicant functionality. Additionally, the obsolete cluster.core_nodes configuration parameter has been removed as it is no longer needed.
    相关的原因可以看这里

如果你非常想在 v5.7.2 上用 replicant 的话,也可以,

  1. replicant 如果没有连上 core 的同步数据的话,会一直在等待状态的(不开端口),你得先把 core 节点启动起来。
  2. 为了方便排查问题,建议先把节点发现改成 static,这样先排除 etcd 的问题。