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systemd: lie about process name using sh -c exec idiom
How to avoid /usr/bin/env being marked in systemd logs as the executablesystemd: default value for environment variableMake systemd reload only single openvpn process and not the whole groupHow to fix unit attribution of last lines of systemd logging before exit?systemd unit files - conditional argumentsStarting services in a specific order on Red Hat?Failure to start custom service using systemdWhy x0vncserver is not starting at boot?Why is systemd stopping service immediately after it is started?Systemd irregular timing issueInstruct to execute an unit after completing another unit successfully
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I'm using the sh -c exec idiom in an ExecStart statement (in a service unit file) to interpolate some shell commands. For example:
ExecStart=/bin/sh -ec "exec /usr/bin/foo $(/usr/bin/foo-config)"
It works great. However, when I look at the journal for this service, the process name is sh instead of foo. Is there a way to lie about the process name using this idiom?
systemd systemd-journald
edited Sep 23 '17 at 19:51
sourcejedi
25.7k445113
asked Jun 13 '16 at 17:51
mwpmwp
1868
add a comment |
I'm using the sh -c exec idiom in an ExecStart statement (in a service unit file) to interpolate some shell commands. For example:
ExecStart=/bin/sh -ec "exec /usr/bin/foo $(/usr/bin/foo-config)"
It works great. However, when I look at the journal for this service, the process name is sh instead of foo. Is there a way to lie about the process name using this idiom?
systemd systemd-journald
edited Sep 23 '17 at 19:51
sourcejedi
25.7k445113
asked Jun 13 '16 at 17:51
mwpmwp
1868
Try adding something directly after the command argument, e.g.sh -ec "exec whatever" desired-name. It will be set as$0for the shell. Not sure if it will carry through to where you want it but it's a good bet.
– Wildcard
Jun 13 '16 at 17:58
@Wildcard: Unfortunately, that did not work.
– mwp
Jun 13 '16 at 18:11
add a comment |
I'm using the sh -c exec idiom in an ExecStart statement (in a service unit file) to interpolate some shell commands. For example:
ExecStart=/bin/sh -ec "exec /usr/bin/foo $(/usr/bin/foo-config)"
It works great. However, when I look at the journal for this service, the process name is sh instead of foo. Is there a way to lie about the process name using this idiom?
systemd systemd-journald
edited Sep 23 '17 at 19:51
sourcejedi
25.7k445113
asked Jun 13 '16 at 17:51
mwpmwp
1868
I'm using the sh -c exec idiom in an ExecStart statement (in a service unit file) to interpolate some shell commands. For example:
ExecStart=/bin/sh -ec "exec /usr/bin/foo $(/usr/bin/foo-config)"
It works great. However, when I look at the journal for this service, the process name is sh instead of foo. Is there a way to lie about the process name using this idiom?
systemd systemd-journald
systemd systemd-journald
edited Sep 23 '17 at 19:51
sourcejedi
25.7k445113
asked Jun 13 '16 at 17:51
mwpmwp
1868
edited Sep 23 '17 at 19:51
sourcejedi
25.7k445113
asked Jun 13 '16 at 17:51
mwpmwp
1868
edited Sep 23 '17 at 19:51
sourcejedi
25.7k445113
edited Sep 23 '17 at 19:51
sourcejedi
25.7k445113
edited Sep 23 '17 at 19:51
sourcejedi
25.7k445113
25.7k445113
asked Jun 13 '16 at 17:51
mwpmwp
1868
asked Jun 13 '16 at 17:51
mwpmwp
1868
asked Jun 13 '16 at 17:51
mwpmwp
1868
1868
Try adding something directly after the command argument, e.g.sh -ec "exec whatever" desired-name. It will be set as$0for the shell. Not sure if it will carry through to where you want it but it's a good bet.
– Wildcard
Jun 13 '16 at 17:58
@Wildcard: Unfortunately, that did not work.
– mwp
Jun 13 '16 at 18:11
add a comment |
Try adding something directly after the command argument, e.g.sh -ec "exec whatever" desired-name. It will be set as$0for the shell. Not sure if it will carry through to where you want it but it's a good bet.
– Wildcard
Jun 13 '16 at 17:58
@Wildcard: Unfortunately, that did not work.
– mwp
Jun 13 '16 at 18:11
Try adding something directly after the command argument, e.g.
sh -ec "exec whatever" desired-name. It will be set as $0 for the shell. Not sure if it will carry through to where you want it but it's a good bet.– Wildcard
Jun 13 '16 at 17:58
Try adding something directly after the command argument, e.g.
sh -ec "exec whatever" desired-name. It will be set as $0 for the shell. Not sure if it will carry through to where you want it but it's a good bet.– Wildcard
Jun 13 '16 at 17:58
@Wildcard: Unfortunately, that did not work.
– mwp
Jun 13 '16 at 18:11
@Wildcard: Unfortunately, that did not work.
– mwp
Jun 13 '16 at 18:11
add a comment |
2 Answers
2
active
oldest
votes
Ah, this turned out to be much easier than I thought it would be. Found an answer here: https://unix.stackexchange.com/a/229525/11995!
SyslogIdentifier=foo
edited Mar 27 at 15:36
Peter Hansen
1054
answered Jun 13 '16 at 18:31
mwpmwp
1868
add a comment |
Have you considered using an environment file or variable to do your last-minute configuration instead of a command? Something like (untested):
Environment= ARGS=--whatever
EnvironmentFile=-/etc/foo/foo.config
ExecStart=/usr/bin/foo $ARGS
That seems more in line with the 'systemd way'.
answered Jun 13 '16 at 18:05
Lee-ManLee-Man
24715
I agree that this approach would be better; unfortunately, I'm trying to wrap something that works a certain way, and I don't have much control over it. Specifically, foo-config does some critical parsing of the config file to generate command-line arguments. This parsing needs to happen at run time to capture any subsequent changes to the config file. Is there a way to do something likeEnvironment=ARGS=$(/usr/bin/foo-config)?
– mwp
Jun 13 '16 at 18:15
In that case (still not sure I agree), you might want to create your own shell script with the same name, e.g. /usr/local/bin/foo. This script could call foo-config and then ultimately /usr/bin/foo? (Again, not tested.)
– Lee-Man
Jun 13 '16 at 18:18
add a comment |
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2 Answers
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active
oldest
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2 Answers
2
active
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Ah, this turned out to be much easier than I thought it would be. Found an answer here: https://unix.stackexchange.com/a/229525/11995!
SyslogIdentifier=foo
edited Mar 27 at 15:36
Peter Hansen
1054
answered Jun 13 '16 at 18:31
mwpmwp
1868
add a comment |
Ah, this turned out to be much easier than I thought it would be. Found an answer here: https://unix.stackexchange.com/a/229525/11995!
SyslogIdentifier=foo
edited Mar 27 at 15:36
Peter Hansen
1054
answered Jun 13 '16 at 18:31
mwpmwp
1868
add a comment |
Ah, this turned out to be much easier than I thought it would be. Found an answer here: https://unix.stackexchange.com/a/229525/11995!
SyslogIdentifier=foo
edited Mar 27 at 15:36
Peter Hansen
1054
answered Jun 13 '16 at 18:31
mwpmwp
1868
Ah, this turned out to be much easier than I thought it would be. Found an answer here: https://unix.stackexchange.com/a/229525/11995!
SyslogIdentifier=foo
edited Mar 27 at 15:36
Peter Hansen
1054
answered Jun 13 '16 at 18:31
mwpmwp
1868
edited Mar 27 at 15:36
Peter Hansen
1054
edited Mar 27 at 15:36
Peter Hansen
1054
edited Mar 27 at 15:36
Peter Hansen
1054
1054
answered Jun 13 '16 at 18:31
mwpmwp
1868
answered Jun 13 '16 at 18:31
mwpmwp
1868
answered Jun 13 '16 at 18:31
mwpmwp
1868
1868
add a comment |
add a comment |
Have you considered using an environment file or variable to do your last-minute configuration instead of a command? Something like (untested):
Environment= ARGS=--whatever
EnvironmentFile=-/etc/foo/foo.config
ExecStart=/usr/bin/foo $ARGS
That seems more in line with the 'systemd way'.
answered Jun 13 '16 at 18:05
Lee-ManLee-Man
24715
I agree that this approach would be better; unfortunately, I'm trying to wrap something that works a certain way, and I don't have much control over it. Specifically, foo-config does some critical parsing of the config file to generate command-line arguments. This parsing needs to happen at run time to capture any subsequent changes to the config file. Is there a way to do something likeEnvironment=ARGS=$(/usr/bin/foo-config)?
– mwp
Jun 13 '16 at 18:15
In that case (still not sure I agree), you might want to create your own shell script with the same name, e.g. /usr/local/bin/foo. This script could call foo-config and then ultimately /usr/bin/foo? (Again, not tested.)
– Lee-Man
Jun 13 '16 at 18:18
add a comment |
Have you considered using an environment file or variable to do your last-minute configuration instead of a command? Something like (untested):
Environment= ARGS=--whatever
EnvironmentFile=-/etc/foo/foo.config
ExecStart=/usr/bin/foo $ARGS
That seems more in line with the 'systemd way'.
answered Jun 13 '16 at 18:05
Lee-ManLee-Man
24715
I agree that this approach would be better; unfortunately, I'm trying to wrap something that works a certain way, and I don't have much control over it. Specifically, foo-config does some critical parsing of the config file to generate command-line arguments. This parsing needs to happen at run time to capture any subsequent changes to the config file. Is there a way to do something likeEnvironment=ARGS=$(/usr/bin/foo-config)?
– mwp
Jun 13 '16 at 18:15
In that case (still not sure I agree), you might want to create your own shell script with the same name, e.g. /usr/local/bin/foo. This script could call foo-config and then ultimately /usr/bin/foo? (Again, not tested.)
– Lee-Man
Jun 13 '16 at 18:18
add a comment |
Have you considered using an environment file or variable to do your last-minute configuration instead of a command? Something like (untested):
Environment= ARGS=--whatever
EnvironmentFile=-/etc/foo/foo.config
ExecStart=/usr/bin/foo $ARGS
That seems more in line with the 'systemd way'.
answered Jun 13 '16 at 18:05
Lee-ManLee-Man
24715
Have you considered using an environment file or variable to do your last-minute configuration instead of a command? Something like (untested):
Environment= ARGS=--whatever
EnvironmentFile=-/etc/foo/foo.config
ExecStart=/usr/bin/foo $ARGS
That seems more in line with the 'systemd way'.
answered Jun 13 '16 at 18:05
Lee-ManLee-Man
24715
answered Jun 13 '16 at 18:05
Lee-ManLee-Man
24715
answered Jun 13 '16 at 18:05
Lee-ManLee-Man
24715
answered Jun 13 '16 at 18:05
Lee-ManLee-Man
24715
24715
I agree that this approach would be better; unfortunately, I'm trying to wrap something that works a certain way, and I don't have much control over it. Specifically, foo-config does some critical parsing of the config file to generate command-line arguments. This parsing needs to happen at run time to capture any subsequent changes to the config file. Is there a way to do something likeEnvironment=ARGS=$(/usr/bin/foo-config)?
– mwp
Jun 13 '16 at 18:15
In that case (still not sure I agree), you might want to create your own shell script with the same name, e.g. /usr/local/bin/foo. This script could call foo-config and then ultimately /usr/bin/foo? (Again, not tested.)
– Lee-Man
Jun 13 '16 at 18:18
add a comment |
I agree that this approach would be better; unfortunately, I'm trying to wrap something that works a certain way, and I don't have much control over it. Specifically, foo-config does some critical parsing of the config file to generate command-line arguments. This parsing needs to happen at run time to capture any subsequent changes to the config file. Is there a way to do something likeEnvironment=ARGS=$(/usr/bin/foo-config)?
– mwp
Jun 13 '16 at 18:15
In that case (still not sure I agree), you might want to create your own shell script with the same name, e.g. /usr/local/bin/foo. This script could call foo-config and then ultimately /usr/bin/foo? (Again, not tested.)
– Lee-Man
Jun 13 '16 at 18:18
I agree that this approach would be better; unfortunately, I'm trying to wrap something that works a certain way, and I don't have much control over it. Specifically, foo-config does some critical parsing of the config file to generate command-line arguments. This parsing needs to happen at run time to capture any subsequent changes to the config file. Is there a way to do something like
Environment=ARGS=$(/usr/bin/foo-config)?– mwp
Jun 13 '16 at 18:15
I agree that this approach would be better; unfortunately, I'm trying to wrap something that works a certain way, and I don't have much control over it. Specifically, foo-config does some critical parsing of the config file to generate command-line arguments. This parsing needs to happen at run time to capture any subsequent changes to the config file. Is there a way to do something like
Environment=ARGS=$(/usr/bin/foo-config)?– mwp
Jun 13 '16 at 18:15
In that case (still not sure I agree), you might want to create your own shell script with the same name, e.g. /usr/local/bin/foo. This script could call foo-config and then ultimately /usr/bin/foo? (Again, not tested.)
– Lee-Man
Jun 13 '16 at 18:18
In that case (still not sure I agree), you might want to create your own shell script with the same name, e.g. /usr/local/bin/foo. This script could call foo-config and then ultimately /usr/bin/foo? (Again, not tested.)
– Lee-Man
Jun 13 '16 at 18:18
add a comment |
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-systemd, systemd-journald
Try adding something directly after the command argument, e.g.
sh -ec "exec whatever" desired-name. It will be set as$0for the shell. Not sure if it will carry through to where you want it but it's a good bet.– Wildcard
Jun 13 '16 at 17:58
@Wildcard: Unfortunately, that did not work.
– mwp
Jun 13 '16 at 18:11