你好，
今天早上我收到一些用户警告说我们的 discourse 安装似乎宕机了，但当我检查时它又恢复正常了。我的监控堆栈显示有多个“离线”行为，但当我通过 launcher logs app 查看日志时，它们似乎没有带时间戳（
），而且可能只显示最近的日志，并没有区分日志来源，因为 discourse 安装包含多个组件（nginx、redis、psql 等）。
有没有办法获得更准确的日志，或者更好的是，以某种方式暴露它们，以便我可以使用 loki / promtail 捕获它们？
所有图表都显示“过去 5 天”，因为我只在那个时候添加了此监控。这是我在监控中看到的内容：
容器正常运行时间：
来自 discourse-prometheus 插件，有很多“空洞”，我猜是因为 discourse 没有响应的时候，这与我今天早上收到用户通知的时间相符：
放大最后 6 小时以澄清这不是一个“小”窗口，当然绝对不能被用户接受：
使用 ./launcher logs app 获取的日志
root@vmi1229594:/var/discourse# ./launcher logs app
x86_64 arch detected.
run-parts: executing /etc/runit/1.d/00-ensure-links
run-parts: executing /etc/runit/1.d/00-fix-var-logs
run-parts: executing /etc/runit/1.d/01-cleanup-web-pids
run-parts: executing /etc/runit/1.d/anacron
run-parts: executing /etc/runit/1.d/cleanup-pids
Cleaning stale PID files
run-parts: executing /etc/runit/1.d/copy-env
Started runsvdir, PID is 41
ok: run: redis: (pid 53) 0s
ok: run: postgres: (pid 55) 0s
supervisor pid: 51 unicorn pid: 87
Shutting Down
run-parts: executing /etc/runit/3.d/01-nginx
ok: down: nginx: 0s, normally up
run-parts: executing /etc/runit/3.d/02-unicorn
(51) exiting
ok: down: unicorn: 1s, normally up
run-parts: executing /etc/runit/3.d/10-redis
ok: down: redis: 0s, normally up
run-parts: executing /etc/runit/3.d/99-postgres
ok: down: postgres: 0s, normally up
ok: down: nginx: 5s, normally up
ok: down: postgres: 0s, normally up
ok: down: redis: 3s, normally up
ok: down: unicorn: 5s, normally up
ok: down: cron: 1s, normally up
ok: down: rsyslog: 1s, normally up
run-parts: executing /etc/runit/1.d/00-ensure-links
run-parts: executing /etc/runit/1.d/00-fix-var-logs
run-parts: executing /etc/runit/1.d/01-cleanup-web-pids
run-parts: executing /etc/runit/1.d/anacron
run-parts: executing /etc/runit/1.d/cleanup-pids
Cleaning stale PID files
run-parts: executing /etc/runit/1.d/copy-env
Started runsvdir, PID is 35
ok: run: redis: (pid 49) 0s
ok: run: postgres: (pid 48) 0s
supervisor pid: 43 unicorn pid: 81
(43) Reopening logs
(43) Reopening logs
Shutting Down
run-parts: executing /etc/runit/3.d/01-nginx
ok: down: nginx: 0s, normally up
run-parts: executing /etc/runit/3.d/02-unicorn
(43) exiting
ok: down: unicorn: 0s, normally up
run-parts: executing /etc/runit/3.d/10-redis
ok: down: redis: 0s, normally up
run-parts: executing /etc/runit/3.d/99-postgres
timeout: run: postgres: (pid 48) 34983s, want down, got TERM
run-parts: /etc/runit/3.d/99-postgres exited with return code 1
ok: down: nginx: 10s, normally up
ok: down: redis: 8s, normally up
ok: down: unicorn: 10s, normally up
ok: down: cron: 0s, normally up
ok: down: rsyslog: 0s, normally up
kill: run: postgres: (pid 48) 34991s, want down, got TERM
run-parts: executing /etc/runit/1.d/00-ensure-links
run-parts: executing /etc/runit/1.d/00-fix-var-logs
run-parts: executing /etc/runit/1.d/01-cleanup-web-pids
run-parts: executing /etc/runit/1.d/anacron
run-parts: executing /etc/runit/1.d/cleanup-pids
Cleaning stale PID files
run-parts: executing /etc/runit/1.d/copy-env
Started runsvdir, PID is 35
fail: redis: runsv not running
ok: run: redis: (pid 53) 1s
ok: run: postgres: (pid 48) 1s
supervisor pid: 79 unicorn pid: 83
(79) Reopening logs
Shutting Down
run-parts: executing /etc/runit/3.d/01-nginx
ok: down: nginx: 0s, normally up
run-parts: executing /etc/runit/3.d/02-unicorn
(79) exiting
ok: down: unicorn: 0s, normally up
run-parts: executing /etc/runit/3.d/10-redis
ok: down: redis: 0s, normally up
run-parts: executing /etc/runit/3.d/99-postgres
ok: down: postgres: 0s, normally up
ok: down: nginx: 5s, normally up
ok: down: postgres: 0s, normally up
ok: down: redis: 3s, normally up
ok: down: unicorn: 5s, normally up
ok: down: cron: 1s, normally up
ok: down: rsyslog: 1s, normally up
run-parts: executing /etc/runit/1.d/00-ensure-links
run-parts: executing /etc/runit/1.d/00-fix-var-logs
run-parts: executing /etc/runit/1.d/01-cleanup-web-pids
run-parts: executing /etc/runit/1.d/anacron
run-parts: executing /etc/runit/1.d/cleanup-pids
Cleaning stale PID files
run-parts: executing /etc/runit/1.d/copy-env
Started runsvdir, PID is 34
ok: run: redis: (pid 49) 0s
ok: run: postgres: (pid 44) 0s
supervisor pid: 41 unicorn pid: 80
(41) Reopening logs
(41) Reopening logs
(41) Reopening logs
(41) Reopening logs
(41) Reopening logs
