在给定的过程中，"supervisorctl tail"如何工作? [英] How does `supervisorctl tail` work, for a given process?

问题描述

supervisorctl tail从哪里获取某个进程的日志信息?如何获取完整的日志?

Where does supervisorctl tail take the log information of a certain process from? How do I get a full log?

推荐答案

从命令行帮助(supervisorctl help tail):

tail [-f] <name> [stdout|stderr] (default stdout)
Ex:
tail -f <name>          Continuous tail of named process stdout
                        Ctrl-C to exit.
tail -100 <name>        last 100 *bytes* of process stdout
tail <name> stderr      last 1600 *bytes* of process stderr

因此，默认情况下，tail命令将尾部输出到标准输出.如果需要获取完整的日志，请使用[program:x]的 stdout_logfile选项部分确定该文件的存储位置；还有一个stderr_logfile选项.

So by default, the tail command tails the process stdout. If you need to get the full log, the stdout_logfile option of the [program:x] section determines where that is stored; there is a stderr_logfile option as well.

如果未设置该选项或未将其设置为AUTO，则在进程启动时将创建一个日志文件，但是在主管重启时会清除该日志文件.该文件是在 [supervisord] childlogdir选项设置的目录中创建的(默认情况下是平台的 TMP目录)，并具有生成的文件名，格式为<program-name>-<stdout|stderr>---<supervisor-identifier>-<6-random-characters>.log，例如varnish-stdout---supervisor-AqY52e.log.

If that option is not set or set to AUTO, a logfile will be created when the process starts, but cleaned up whenever supervisord restarts. This file is created in the directory set by the [supervisord] childlogdir option (which is your platform's TMP directory by default), and have a generated filename of the form <program-name>-<stdout|stderr>---<supervisor-identifier>-<6-random-characters>.log, e.g. varnish-stdout---supervisor-AqY52e.log.

因此，如果要访问整个标准输出日志，则至少需要将childlogdir选项设置为固定目录，以免您不得不搜索正确的临时目录.

Thus, if you want to access the whole stdout log, you need to at the very least set the childlogdir option to a fixed directory to save you from having to search for the right temporary directory.

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