Shulou(Shulou.com)06/01 Report--

Pt-stalk

Collect on-site data when a problem occurs

Triggered under certain conditions, some monitoring data are collected to facilitate the analysis of the problem. Root permission is required to run this feature. It can be used as a real-time acquisition function, or you can set trigger conditions.

Pt-stalk-disk-pct-free 20-collect-tcpdump-function status-variable Threads_connected-threshold 20-iterations 2000-daemonize-user=root-password=energy@db

Default log storage: / var/log/pt-stalk.log

Pid default storage: / run/pt-stalk.pid

Default storage of record files: / var/lib/pt-stalk

-- disk-pct-free 20: if the remaining space is less than 20%, data is no longer collected

-- collect-tcpdump: call tcpdump to collect network packet information

-- function status-- variable Threads_connected-- threshold 20:MySQL status value Threads_connected exceeding 20:00 triggers data collection

-- iterations 2000: this parameter specifies that pt-stalk will exit after collecting 2000 fault sites

-- daemonize: runs in the background

Tail-f / var/log/pt-stalk.log

Pt-sift analyzes the output of pt-stalk

Find the file analysis prefixed with 2018'07'04'10'03'51 in the default directory

Display only disk information

Pt-sift / var/lib/pt-stalk/2018_07_04_10_03_51

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