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How to make journalctl recognize user-defined fields?
How to combine output of several journals by journalctl?How do you use systemd's journalctl patternsHow to display syslog priority level in systemd's journalctlsystemd's journalctl: how to filter by message?Is there a way to make journalctl show logs from “the last time foo.service ran”?journalctl: how to display colors in its output?How to allow a user to use journalctl to see user-specific systemd service logs?How do view older journalctl logs (after a rotation maybe?)Arch Linux journalctl: how to increase logging size?Why there is no journalctl in my centos 6.6 box and how to install/enable it?
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Journalctl's manual says:
New fields may freely be defined by applications, but a few fields
have special meaning.
However I don't see a way to actually introduce my own field that journalctl would recognize and allow filter on.
I tried many variations of the following to no avail:
echo 'FOO=12' | systemd-cat -t TestFields -p warning
journalctl doesn't see FOO field that I'm trying to add:
# journalctl -f -t TestFields
-- Logs begin at Wed 2018-11-28 16:08:31 UTC. --
Nov 28 16:29:10 2f79ab2701c9 TestFields[105]: FOO=12
in json format:
# journalctl -f -t TestFields -o json-pretty
"__CURSOR" : "s=95d756f74cc14c25b5d6a6c86e2d3dd4;i=31b;b=c2286470c74849db84c4a2b458276561;m=4686eb5305;t=57bbc10de8aab;x=8ea14ded83dc4684",
"__REALTIME_TIMESTAMP" : "1543422550641323",
"__MONOTONIC_TIMESTAMP" : "302911279877",
"_BOOT_ID" : "c2286470c74849db84c4a2b458276561",
"_UID" : "0",
"_GID" : "0",
"_MACHINE_ID" : "70406ad7f5774a17a5f1cbbaf5f4455e",
"_HOSTNAME" : "2f79ab2701c9",
"PRIORITY" : "4",
"_CAP_EFFECTIVE" : "3fffffffff",
"_SYSTEMD_CGROUP" : "0",
"_TRANSPORT" : "stdout",
"_COMM" : "cat",
"_EXE" : "/usr/bin/cat",
"_CMDLINE" : "/bin/cat",
"_STREAM_ID" : "7bf67dfa7ff846429fea8092f40a34f7",
"SYSLOG_IDENTIFIER" : "TestFields",
"MESSAGE" : "FOO=12",
"_PID" : "105"
and finally filtering yields no result:
# journalctl FOO=12 -t TestFields
-- No entries --
for comparison:
# journalctl _PID=105 -t TestFields
-- Logs begin at Wed 2018-11-28 16:08:31 UTC, end at Wed 2018-11-28 16:29:10 UTC. --
Nov 28 16:29:10 2f79ab2701c9 TestFields[105]: FOO=12
systemd journalctl
asked Nov 28 '18 at 16:37
AlexAlex
1105 bronze badges
add a comment |
Journalctl's manual says:
New fields may freely be defined by applications, but a few fields
have special meaning.
However I don't see a way to actually introduce my own field that journalctl would recognize and allow filter on.
I tried many variations of the following to no avail:
echo 'FOO=12' | systemd-cat -t TestFields -p warning
journalctl doesn't see FOO field that I'm trying to add:
# journalctl -f -t TestFields
-- Logs begin at Wed 2018-11-28 16:08:31 UTC. --
Nov 28 16:29:10 2f79ab2701c9 TestFields[105]: FOO=12
in json format:
# journalctl -f -t TestFields -o json-pretty
"__CURSOR" : "s=95d756f74cc14c25b5d6a6c86e2d3dd4;i=31b;b=c2286470c74849db84c4a2b458276561;m=4686eb5305;t=57bbc10de8aab;x=8ea14ded83dc4684",
"__REALTIME_TIMESTAMP" : "1543422550641323",
"__MONOTONIC_TIMESTAMP" : "302911279877",
"_BOOT_ID" : "c2286470c74849db84c4a2b458276561",
"_UID" : "0",
"_GID" : "0",
"_MACHINE_ID" : "70406ad7f5774a17a5f1cbbaf5f4455e",
"_HOSTNAME" : "2f79ab2701c9",
"PRIORITY" : "4",
"_CAP_EFFECTIVE" : "3fffffffff",
"_SYSTEMD_CGROUP" : "0",
"_TRANSPORT" : "stdout",
"_COMM" : "cat",
"_EXE" : "/usr/bin/cat",
"_CMDLINE" : "/bin/cat",
"_STREAM_ID" : "7bf67dfa7ff846429fea8092f40a34f7",
"SYSLOG_IDENTIFIER" : "TestFields",
"MESSAGE" : "FOO=12",
"_PID" : "105"
and finally filtering yields no result:
# journalctl FOO=12 -t TestFields
-- No entries --
for comparison:
# journalctl _PID=105 -t TestFields
-- Logs begin at Wed 2018-11-28 16:08:31 UTC, end at Wed 2018-11-28 16:29:10 UTC. --
Nov 28 16:29:10 2f79ab2701c9 TestFields[105]: FOO=12
systemd journalctl
asked Nov 28 '18 at 16:37
AlexAlex
1105 bronze badges
add a comment |
Journalctl's manual says:
New fields may freely be defined by applications, but a few fields
have special meaning.
However I don't see a way to actually introduce my own field that journalctl would recognize and allow filter on.
I tried many variations of the following to no avail:
echo 'FOO=12' | systemd-cat -t TestFields -p warning
journalctl doesn't see FOO field that I'm trying to add:
# journalctl -f -t TestFields
-- Logs begin at Wed 2018-11-28 16:08:31 UTC. --
Nov 28 16:29:10 2f79ab2701c9 TestFields[105]: FOO=12
in json format:
# journalctl -f -t TestFields -o json-pretty
"__CURSOR" : "s=95d756f74cc14c25b5d6a6c86e2d3dd4;i=31b;b=c2286470c74849db84c4a2b458276561;m=4686eb5305;t=57bbc10de8aab;x=8ea14ded83dc4684",
"__REALTIME_TIMESTAMP" : "1543422550641323",
"__MONOTONIC_TIMESTAMP" : "302911279877",
"_BOOT_ID" : "c2286470c74849db84c4a2b458276561",
"_UID" : "0",
"_GID" : "0",
"_MACHINE_ID" : "70406ad7f5774a17a5f1cbbaf5f4455e",
"_HOSTNAME" : "2f79ab2701c9",
"PRIORITY" : "4",
"_CAP_EFFECTIVE" : "3fffffffff",
"_SYSTEMD_CGROUP" : "0",
"_TRANSPORT" : "stdout",
"_COMM" : "cat",
"_EXE" : "/usr/bin/cat",
"_CMDLINE" : "/bin/cat",
"_STREAM_ID" : "7bf67dfa7ff846429fea8092f40a34f7",
"SYSLOG_IDENTIFIER" : "TestFields",
"MESSAGE" : "FOO=12",
"_PID" : "105"
and finally filtering yields no result:
# journalctl FOO=12 -t TestFields
-- No entries --
for comparison:
# journalctl _PID=105 -t TestFields
-- Logs begin at Wed 2018-11-28 16:08:31 UTC, end at Wed 2018-11-28 16:29:10 UTC. --
Nov 28 16:29:10 2f79ab2701c9 TestFields[105]: FOO=12
systemd journalctl
asked Nov 28 '18 at 16:37
AlexAlex
1105 bronze badges
Journalctl's manual says:
New fields may freely be defined by applications, but a few fields
have special meaning.
However I don't see a way to actually introduce my own field that journalctl would recognize and allow filter on.
I tried many variations of the following to no avail:
echo 'FOO=12' | systemd-cat -t TestFields -p warning
journalctl doesn't see FOO field that I'm trying to add:
# journalctl -f -t TestFields
-- Logs begin at Wed 2018-11-28 16:08:31 UTC. --
Nov 28 16:29:10 2f79ab2701c9 TestFields[105]: FOO=12
in json format:
# journalctl -f -t TestFields -o json-pretty
"__CURSOR" : "s=95d756f74cc14c25b5d6a6c86e2d3dd4;i=31b;b=c2286470c74849db84c4a2b458276561;m=4686eb5305;t=57bbc10de8aab;x=8ea14ded83dc4684",
"__REALTIME_TIMESTAMP" : "1543422550641323",
"__MONOTONIC_TIMESTAMP" : "302911279877",
"_BOOT_ID" : "c2286470c74849db84c4a2b458276561",
"_UID" : "0",
"_GID" : "0",
"_MACHINE_ID" : "70406ad7f5774a17a5f1cbbaf5f4455e",
"_HOSTNAME" : "2f79ab2701c9",
"PRIORITY" : "4",
"_CAP_EFFECTIVE" : "3fffffffff",
"_SYSTEMD_CGROUP" : "0",
"_TRANSPORT" : "stdout",
"_COMM" : "cat",
"_EXE" : "/usr/bin/cat",
"_CMDLINE" : "/bin/cat",
"_STREAM_ID" : "7bf67dfa7ff846429fea8092f40a34f7",
"SYSLOG_IDENTIFIER" : "TestFields",
"MESSAGE" : "FOO=12",
"_PID" : "105"
and finally filtering yields no result:
# journalctl FOO=12 -t TestFields
-- No entries --
for comparison:
# journalctl _PID=105 -t TestFields
-- Logs begin at Wed 2018-11-28 16:08:31 UTC, end at Wed 2018-11-28 16:29:10 UTC. --
Nov 28 16:29:10 2f79ab2701c9 TestFields[105]: FOO=12
systemd journalctl
systemd journalctl
asked Nov 28 '18 at 16:37
AlexAlex
1105 bronze badges
asked Nov 28 '18 at 16:37
AlexAlex
1105 bronze badges
asked Nov 28 '18 at 16:37
AlexAlex
1105 bronze badges
asked Nov 28 '18 at 16:37
AlexAlex
1105 bronze badges
asked Nov 28 '18 at 16:37
AlexAlex
1105 bronze badges
1105 bronze badges
add a comment |
add a comment |
1 Answer
1
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votes
In case someone is exploring this path, the answer is no, you can't do that. Consider using structured logs where you can add whatever fields you want.
answered Jun 9 at 2:27
AlexAlex
1105 bronze badges
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
In case someone is exploring this path, the answer is no, you can't do that. Consider using structured logs where you can add whatever fields you want.
answered Jun 9 at 2:27
AlexAlex
1105 bronze badges
add a comment |
In case someone is exploring this path, the answer is no, you can't do that. Consider using structured logs where you can add whatever fields you want.
answered Jun 9 at 2:27
AlexAlex
1105 bronze badges
add a comment |
In case someone is exploring this path, the answer is no, you can't do that. Consider using structured logs where you can add whatever fields you want.
answered Jun 9 at 2:27
AlexAlex
1105 bronze badges
In case someone is exploring this path, the answer is no, you can't do that. Consider using structured logs where you can add whatever fields you want.
answered Jun 9 at 2:27
AlexAlex
1105 bronze badges
answered Jun 9 at 2:27
AlexAlex
1105 bronze badges
answered Jun 9 at 2:27
AlexAlex
1105 bronze badges
answered Jun 9 at 2:27
AlexAlex
1105 bronze badges
1105 bronze badges
add a comment |
add a comment |
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