Kickstart %traceback scripts

ks.cfg

# Can have multiple %traceback per kickstart
# Bash example:
%traceback
#
# traceback/common: custom traceback handler
#

echo "wann.net traceback handler firing"
ls -l /tmp/anaconda-tb*
echo "hello world!"

%end

# Python example:
%traceback --interpreter=/usr/bin/python
#!/usr/bin/env python
#
# Finds and parses any traceback files from anaconda in tmp, passes the error
# and stack to scribe category
#

import glob
import json

from pyanaconda.scribe_logger import scribe_log, scribe_traceback

# Find our traceback files. If we have anaconda-tb-all.log, prefer it.
# We should only ever have this one plus a alternative?
tracebacks = glob.glob('/tmp/anaconda-tb*')

if '/tmp/anaconda-tb-all.log' in tracebacks:
  tb_file = '/tmp/anaconda-tb-all.log'
else:
  tb_file = tracebacks.pop()

buffering = False
tldr = ''
errors = []

with open(tb_file, 'r') as f:
    for line in f:

        if 'Traceback' in line:
            buffering = True
            continue

        if buffering:
            # Error messages always start on left column ?
            if line.startswith('  '):
                errors.append(line.rstrip())
            else:
                tldr = line.strip()
                break

# for err in errors:
#    print 'err: ' + err
#
# print 'tldr: ' + tldr

scribe_traceback(tldr, errors)

%end

pretty print traceback to scribe

{
 "timestamp": 1453120100,
 "hostname": "raptor2.wann.net",
 "type": "traceback",
 "stack": [
   "  File \"str_eval\", line 3, in f1453120096",
   "  File \"str_eval\", line 5, in <module>",
   "  File \"/usr/lib64/python2.7/site-packages/pyanaconda/exception.py\", line 346, in raise_exception",
   "    eval(compile(code, \"str_eval\", \"exec\"))",
   "  File \"/usr/lib64/python2.7/threading.py\", line 764, in run",
   "    self.__target(*self.__args, **self.__kwargs)",
   "  File \"/usr/lib64/python2.7/site-packages/pyanaconda/threads.py\", line 227, in run",
   "    threading.Thread.run(self, *args, **kwargs)"
 ],
 "error": "RuntimeError: NOTABUG: testing exception handling"
 }

{"timestamp": 1453120100, "message": "All kickstart %%traceback script(s) have been run", "hostname": "raptor2.wann.net", "type": "log"}

scribe category output

[root@basic08 ~]# tail -F /var/scribe/anaconda/anaconda_current

{"timestamp": 1453120072, "message": "Setting up the installation environment", "hostname": "raptor2.wann.net", "type": "log"}
{"timestamp": 1453120075, "message": "Created disklabel on /dev/sda", "hostname": "raptor2.wann.net", "type": "log"}
{"timestamp": 1453120076, "message": "Created xfs on /dev/sda1", "hostname": "raptor2.wann.net", "type": "log"}
{"timestamp": 1453120081, "message": "Created xfs on /dev/sda3", "hostname": "raptor2.wann.net", "type": "log"}
{"timestamp": 1453120082, "message": "Created swap on /dev/sda2", "hostname": "raptor2.wann.net", "type": "log"}
{"timestamp": 1453120083, "message": "Starting package installation process", "hostname": "raptor2.wann.net", "type": "log"}

# shoot anaconda in the head with 'killall -USR1 anaconda', watch our traceback from python traceback show up here...

{"timestamp": 1453120100, "message": "Running kickstart %%traceback script(s)", "hostname": "raptor2.wann.net", "type": "log"}
{"hostname": "raptor2.wann.net", "timestamp": 1453120100, "message": "%traceback fired"}\n
{"timestamp": 1453120100, "hostname": "raptor2.wann.net", "type": "traceback", "stack": ["  File \"str_eval\", line 3, in f1453120096", "  File \"str_eval\", line 5, in <module>", "  File \"/usr/lib64/python2.7/site-packages/pyanaconda/exception.py\", line 346, in raise_exception", "    eval(compile(code, \"str_eval\", \"exec\"))", "  File \"/usr/lib64/python2.7/threading.py\", line 764, in run", "    self.__target(*self.__args, **self.__kwargs)", "  File \"/usr/lib64/python2.7/site-packages/pyanaconda/threads.py\", line 227, in run", "    threading.Thread.run(self, *args, **kwargs)"], "error": "RuntimeError: NOTABUG: testing exception handling"}
{"timestamp": 1453120100, "message": "All kickstart %%traceback script(s) have been run", "hostname": "raptor2.wann.net", "type": "log"}


{"timestamp": 1453120476, "message": "Installing boot loader", "hostname": "raptor2.wann.net", "type": "log"}
{"timestamp": 1453120476, "message": "Performing post-installation setup tasks", "hostname": "raptor2.wann.net", "type": "log"}