注意,密码一定用双引号包括!
alter user xxx identified by "yyy";
[......]
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常用PromQL学习
1 根据服务、环境选择数据
xxx_total{application="$application", instance="$instance"}
2 同上,支持muti-val(多选)
xxx_total{application="$application", instance=~"$instance"}
3 按xxx_method分类汇总,P95耗时
histogram_quantile(0.95, sum(rate(xxx_bucket{application="$applica[......]
keepalived配置端口检测最简方案
在/etc/keepalived/keepalived.conf中配置如下:
vrrp_script chk_http_port {
script "/usr/bin/bash -c '</dev/tcp/127.0.0.1/8888'"
interval 2
weight -5
fall 2
rise 1
}
[......]