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nerv's Issues

回复早上面试

Q:如果我加入,最想做的是啥?
A:容器,想更加深入学习容器相关知识

MySQL scale out & scale in

基于MySQL LB 拓扑 实现scale out|in

scale out :nerv-cli topo scaleout -i {topoId} -h {host_node_name},{new_ip_list}
scale in or dynamic out:nerv-cli topo scale -i {topoId} -h {host_node_name},{counts}

MySQL Load Balance

拓扑如下:
+------------+ +------------+
| lvs master | | lvs backup |
+------------+ +------------+

+--------------+ +--------------+
| mysql proxy | | mysql proxy | ...... N台
+--------------+ +--------------+

+--------------+ +--------------+
| mysql | | mysql | ...... N台,每2台主备
+--------------+ +--------------+

MySQL HA

例如 缩容: 首先,给10台mysql安装缩容软件,配置好,跑起来。然后观察各mysql的复制进度,到一定程度(进度大致匹配,延迟小于某个阈值),锁住LVS(或者通知上层Route) 这样应用不会有流量写到各mysql, 然后等待各mysql的复制完毕,停止复制,通知LVS更改IP列表(原来10台可用的mysql地址改成缩容后的一台或两台)。缩容结束。

addFile failed

The tree component lost the focus after a file, so the activeNodes is empty.

const parent = this.tree.treeModel.activeNodes[0].parent.data;

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