Add tip: approx with runit supervision

[grml-tips.git] / grml_tips

diff --git a/grml_tips b/grml_tips
index 66f46a5..f8db64c 100644 (file)
--- a/grml_tips
+++ b/grml_tips
@@ -1311,6 +1311,10 @@ product ID when loading the usbserial module. Usage example:
 Bus 004 Device 008: ID 1199:6813 Sierra Wireless, Inc.
 
 # modprobe usbserial vendor=0x1199 product=0x6813
+
+To get a list of available providers execute:
+
+# gcom -s -d /dev/ttyUSB0 /usr/share/doc/gcom/examples/operator
 -- 
 hdparm - get/set hard disk parameters
 
@@ -3002,3 +3006,42 @@ Hints:
   - Do not use interface names without ending 0 (otherwise startup fails).
   - Only chooss unique names for interfaces.
 -- 
+Find dangling symlinks using zsh:
+
+% ls **/*(-@)
+-- 
+approx with runit supervision
+
+# apt-get install approx runit
+
+Add user approxlog for the logging daemon
+# adduser --system --home /nonexistent --no-create-home approxlog
+
+Create config directory
+# mkdir /etc/sv/approx
+
+Use /var/run/sv.approx as supervise directories
+# ln -s /var/run/sv.approx /etc/sv/approx/supervise
+
+# cat /etc/sv/approx/run
+# #!/bin/sh
+echo 'approx starting'
+exec approx -f 2>&1
+
+You normally do not need a logging service for approx, because it loggs
+to syslog too. So just for completion.
+# mkdir -p /etc/sv/approx/log
+# ln -s /var/run/sv.approx.log /etc/sv/approx/log/supervise
+# cat /etc/sv/approx/log/run
+#!/bin/sh
+set -e
+LOG="/var/log/approx"
+test -d "$LOG" || mkdir -p -m2750 "$LOG" && chown approxlog:adm "$LOG"
+exec chpst -uapproxlog svlogd -tt -v "$LOG"
+
+Now activate the new approx service (will be started within 5s)
+# ln -s /etc/sv/approx/ /var/service/
+
+Make the runit managed approx available with init-script interface.
+# dpkg-divert --local --rename /etc/init.d/approx
+# ln -s /usr/bin/sv /etc/init.d/approx