Hello Spike,
The error message is telling us something has gone wrong, but it's not
very specific.
It is helpful is to look at the output from the 'print' command from the
hand-editted file
# augtool print /files/etc/krb5.conf
/files/etc/krb5.conf
/files/etc/krb5.conf/libdefaults
/files/etc/krb5.conf/libdefaults/default_tgs_enctypes[1] =
"arcfour-hmac-md5"
/files/etc/krb5.conf/libdefaults/default_tgs_enctypes[2] =
"aes128-cts-hmac-sha1-96"
/files/etc/krb5.conf/libdefaults/default_tgs_enctypes[3] =
"aes256-cts-hmac-sha1-96"
/files/etc/krb5.conf/libdefaults/#eol[1]
/files/etc/krb5.conf/libdefaults/default_tkt_enctypes[1] =
"arcfour-hmac-md5"
/files/etc/krb5.conf/libdefaults/default_tkt_enctypes[2] =
"aes128-cts-hmac-sha1-96"
/files/etc/krb5.conf/libdefaults/default_tkt_enctypes[3] =
"aes256-cts-hmac-sha1-96"
/files/etc/krb5.conf/libdefaults/#eol[2]
/files/etc/krb5.conf/libdefaults/default_realm = "AMER.DELL.COM"
/files/etc/krb5.conf/libdefaults/ticket_lifetime = "36000"
/files/etc/krb5.conf/libdefaults/forwardable = "true"
/files/etc/krb5.conf/domain_realm
/files/etc/krb5.conf/domain_realm/auspslpltinf1.us.dell.com =
"AMER.DELL.COM"
Adding the lines #eol[] to the augtool script resolves this issue:
load-file /etc/krb5.conf
defnode libdefaults /files/etc/krb5.conf/libdefaults
set $libdefaults/default_tgs_enctypes[1] 'arcfour-hmac-md5'
set $libdefaults/default_tgs_enctypes[2] 'aes128-cts-hmac-sha1-96'
set $libdefaults/default_tgs_enctypes[3] 'aes256-cts-hmac-sha1-96'
set $libdefaults/#eol[1]
set $libdefaults/default_tkt_enctypes[1] 'arcfour-hmac-md5'
set $libdefaults/default_tkt_enctypes[2] 'aes128-cts-hmac-sha1-96'
set $libdefaults/default_tkt_enctypes[3] 'aes256-cts-hmac-sha1-96'
set $libdefaults/#eol[2]
save
Regards,
George Hansper
On 23/2/21 7:21 am, Spike White wrote:
In summary, here's a simple augtool file:
set /augeas/load/Krb5/incl "/etc/krb5.conf"
set /augeas/load/Krb5/lens "Krb5.lns"
load
defnode libdefaults /files/etc/krb5.conf/libdefaults
set $libdefaults/default_tgs_enctypes[1] 'arcfour-hmac-md5'
set $libdefaults/default_tgs_enctypes[2] 'aes128-cts-hmac-sha1-96'
set $libdefaults/default_tgs_enctypes[3] 'aes256-cts-hmac-sha1-96'
set $libdefaults/default_tkt_enctypes[1] 'arcfour-hmac-md5'
set $libdefaults/default_tkt_enctypes[2] 'aes128-cts-hmac-sha1-96'
set $libdefaults/default_tkt_enctypes[3] 'aes256-cts-hmac-sha1-96'
save
print /augeas//error
Here's a simple /etc/krb5.conf file:
[libdefaults]
default_realm = AMER.DELL.COM <http://AMER.DELL.COM>
ticket_lifetime = 36000
forwardable = true
[domain_realm]
auspslpltinf1.us.dell.com <http://auspslpltinf1.us.dell.com> =
AMER.DELL.COM <http://AMER.DELL.COM>
Here's the augtool invocation:
augtool --noautoload -f krb5.aug
Here's the error:
[root@auspslpltinf1 tmp]# augtool --noautoload -f krb5.aug
error: Failed to execute command
saving failed (run 'print /augeas//error' for details)
/augeas/files/etc/krb5.conf/error = "put_failed"
/augeas/files/etc/krb5.conf/error/path =
"/files/etc/krb5.conf/libdefaults"
/augeas/files/etc/krb5.conf/error/lens =
"/usr/share/augeas/lenses/dist/inifile.aug:353.27-354.17:"
/augeas/files/etc/krb5.conf/error/message = "Failed to match \n ({
/[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Gg][Ss]_[Ee][Nn][Cc][Tt][Yy][Pp][Ee](([Ss][.0-9A-Z_a-z-]|[.0-9A-RT-Z_a-rt-z-])[.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Gg][Ss]_[Ee][Nn][Cc][Tt][Yy][Pp]([.0-9A-DF-Z_a-df-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Gg][Ss]_[Ee][Nn][Cc][Tt][Yy]([.0-9A-OQ-Z_a-oq-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Gg][Ss]_[Ee][Nn][Cc][Tt]([.0-9A-XZ_a-xz-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Gg][Ss]_[Ee][Nn][Cc]([.0-9A-SU-Z_a-su-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Gg][Ss]_[Ee][Nn]([.0-9ABD-Z_abd-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Gg][Ss]_[Ee]([.0-9A-MO-Z_a-mo-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Gg][Ss]_([.0-9A-DF-Z_a-df-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Gg][Ss]([.0-9A-Za-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Kk][Tt]_[Ee][Nn][Cc][Tt][Yy][Pp][Ee](([Ss][.0-9A-Z_a-z-]|[.0-9A-RT-Z_a-rt-z-])[.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Kk][Tt]_[Ee][Nn][Cc][Tt][Yy][Pp]([.0-9A-DF-Z_a-df-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Kk][Tt]_[Ee][Nn][Cc][Tt][Yy]([.0-9A-OQ-Z_a-oq-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Kk][Tt]_[Ee][Nn][Cc][Tt]([.0-9A-XZ_a-xz-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Kk][Tt]_[Ee][Nn][Cc]([.0-9A-SU-Z_a-su-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Kk][Tt]_[Ee][Nn]([.0-9ABD-Z_abd-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Kk][Tt]_[Ee]([.0-9A-MO-Z_a-mo-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Kk][Tt]_([.0-9A-DF-Z_a-df-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Kk][Tt]([.0-9A-Za-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Kk]([.0-9A-SU-Z_a-su-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt][Gg]([.0-9A-RT-Z_a-rt-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_[Tt]([.0-9A-FH-JL-Z_a-fh-jl-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]_([.0-9A-SU-Z_a-su-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll][Tt]([.0-9A-Za-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu][Ll]([.0-9A-SU-Z_a-su-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa][Uu]([.0-9A-KM-Z_a-km-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff][Aa]([.0-9A-TV-Z_a-tv-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee][Ff]([.0-9B-Z_b-z-][.0-9A-Z_a-z-]*|)|[Dd][Ee]([.0-9A-EG-Z_a-eg-z-][.0-9A-Z_a-z-]*|)|[Pp][Ee][Rr][Mm][Ii][Tt][Tt][Ee][Dd]_[Ee][Nn][Cc][Tt][Yy][Pp][Ee](([Ss][.0-9A-Z_a-z-]|[.0-9A-RT-Z_a-rt-z-])[.0-9A-Z_a-z-]*|)|[Pp][Ee][Rr][Mm][Ii][Tt][Tt][Ee][Dd]_[Ee][Nn][Cc][Tt][Yy][Pp]([.0-9A-DF-Z_a-df-z-][.0-9A-Z_a-z-]*|)|[Pp][Ee][Rr][Mm][Ii][Tt][Tt][Ee][Dd]_[Ee][Nn][Cc][Tt][Yy]([.0-9A-OQ-Z_a-oq-z-][.0-9A-Z_a-z-]*|)|[Pp][Ee][Rr][Mm][Ii][Tt][Tt][Ee][Dd]_[Ee][Nn][Cc][Tt]([.0-9A-XZ_a-xz-][.0-9A-Z_a-z-]*|)|[Pp][Ee][Rr][Mm][Ii][Tt][Tt][Ee][Dd]_[Ee][Nn][Cc]([.0-9A-SU-Z_a-su-z-][.0-9A-Z_a-z-]*|)|[Pp][Ee][Rr][Mm][Ii][Tt][Tt][Ee][Dd]_[Ee][Nn]([.0-9ABD-Z_abd-z-][.0-9A-Z_a-z-]*|)|[Pp][Ee][Rr][Mm][Ii][Tt][Tt][Ee][Dd]_[Ee]([.0-9A-MO-Z_a-mo-z-][.0-9A-Z_a-z-]*|)|[Pp][Ee][Rr][Mm][Ii][Tt][Tt][Ee][Dd]_([.0-9A-DF-Z_a-df-z-][.0-9A-Z_a-z-]*|)|[Pp][Ee][Rr][Mm][Ii][Tt][Tt][Ee][Dd]([.0-9A-Za-z-][.0-9A-Z_a-z-]*|)|[Pp][Ee][Rr][Mm][Ii][Tt][Tt][Ee]([.0-9A-CE-Z_a-ce-z-][.0-9A-Z_a-z-]*|)|[Pp][Ee][Rr][Mm][Ii][Tt][Tt]([.0-9A-DF-Z_a-df-z-][.0-9A-Z_a-z-]*|)|[Pp][Ee][Rr][Mm][Ii][Tt]([.0-9A-SU-Z_a-su-z-][.0-9A-Z_a-z-]*|)|[Pp][Ee][Rr][Mm][Ii]([.0-9A-SU-Z_a-su-z-][.0-9A-Z_a-z-]*|)|[Pp][Ee][Rr][Mm]([.0-9A-HJ-Z_a-hj-z-][.0-9A-Z_a-z-]*|)|[Pp][Ee][Rr]([.0-9A-LN-Z_a-ln-z-][.0-9A-Z_a-z-]*|)|[Pp][Ee]([.0-9A-QS-Z_a-qs-z-][.0-9A-Z_a-z-]*|)|([Pp][.0-9A-DF-Z_a-df-z-]|[Dd][.0-9A-DF-Z_a-df-z-]|[.0-9A-CE-OQ-Z_a-ce-oq-uw-z-][.0-9A-Z_a-z-])([.0-9A-Z_a-z-][.0-9A-Z_a-z-]*|)|(v4_name_convert[.0-9A-Z_a-z-][.0-9A-Z_a-z-]|v4_name_conver[.0-9A-Z_a-su-z-][.0-9A-Z_a-z-])[.0-9A-Z_a-z-]*|v4_name_convert[.0-9A-Z_a-z-]|v4_name_conver[.0-9A-Z_a-su-z-]|v4_name_conver|v4_name_conve[.0-9A-Z_a-qs-z-][.0-9A-Z_a-z-][.0-9A-Z_a-z-]*|v4_name_conve[.0-9A-Z_a-qs-z-]|v4_name_conve|v4_na[.0-9A-Z_a-ln-z-][.0-9A-Z_a-z-][.0-9A-Z_a-z-]*|v4_na[.0-9A-Z_a-ln-z-]|v4_na|v[.0-35-9A-Z_a-z-][.0-9A-Z_a-z-][.0-9A-Z_a-z-]*|v[.0-35-9A-Z_a-z-]|v4[.0-9A-Za-z-][.0-9A-Z_a-z-][.0-9A-Z_a-z-]*|v4[.0-9A-Za-z-]|v4|v4_n[.0-9A-Z_b-z-][.0-9A-Z_a-z-][.0-9A-Z_a-z-]*|v4_n[.0-9A-Z_b-z-]|v4_n|v4_[.0-9A-Z_a-mo-z-][.0-9A-Z_a-z-][.0-9A-Z_a-z-]*|v4_[.0-9A-Z_a-mo-z-]|v4_|v4_nam[.0-9A-Z_a-df-z-][.0-9A-Z_a-z-][.0-9A-Z_a-z-]*|v4_nam[.0-9A-Z_a-df-z-]|v4_nam|v4_name_conv[.0-9A-Z_a-df-z-][.0-9A-Z_a-z-][.0-9A-Z_a-z-]*|v4_name_conv[.0-9A-Z_a-df-z-]|v4_name_conv|v4_name_con[.0-9A-Z_a-uw-z-][.0-9A-Z_a-z-][.0-9A-Z_a-z-]*|v4_name_con[.0-9A-Z_a-uw-z-]|v4_name_con|v4_name_co[.0-9A-Z_a-mo-z-][.0-9A-Z_a-z-][.0-9A-Z_a-z-]*|v4_name_co[.0-9A-Z_a-mo-z-]|v4_name_co|v4_name_c[.0-9A-Z_a-np-z-][.0-9A-Z_a-z-][.0-9A-Z_a-z-]*|v4_name_c[.0-9A-Z_a-np-z-]|v4_name_c|v4_name_[.0-9A-Z_abd-z-][.0-9A-Z_a-z-][.0-9A-Z_a-z-]*|v4_name_[.0-9A-Z_abd-z-]|v4_name_|v4_name[.0-9A-Za-z-][.0-9A-Z_a-z-][.0-9A-Z_a-z-]*|v4_name[.0-9A-Za-z-]|v4_name|v|[Pp]|[Dd]|[.0-9A-CE-OQ-Z_a-ce-oq-uw-z-]/
= /[^\\001-\\004\\t\\n #;]+/ } | { /#comment/ = /(([^\\001-\\004\\t\\n
][^\\001-\\004\\n]*[^\\001-\\004\\t\\n ]|[^\\001-\\004\\t\\n ]))?/ } |
{ /permitted_enctypes/ = /[0-9A-Za-z-]{3,}/ }({ /permitted_enctypes/ =
/[0-9A-Za-z-]{3,}/ })*({ /#comment/ = /(([^\\001-\\004\\t\\n
][^\\001-\\004\\n]*[^\\001-\\004\\t\\n ]|[^\\001-\\004\\t\\n ]))?/ } |
()){ /#eol/ } | { /default_tgs_enctypes/ = /[0-9A-Za-z-]{3,}/ }({
/default_tgs_enctypes/ = /[0-9A-Za-z-]{3,}/ })*({ /#comment/ =
/(([^\\001-\\004\\t\\n ][^\\001-\\004\\n]*[^\\001-\\004\\t\\n
]|[^\\001-\\004\\t\\n ]))?/ } | ()){ /#eol/ } | {
/default_tkt_enctypes/ = /[0-9A-Za-z-]{3,}/ }({ /default_tkt_enctypes/
= /[0-9A-Za-z-]{3,}/ })*({ /#comment/ = /(([^\\001-\\004\\t\\n
][^\\001-\\004\\n]*[^\\001-\\004\\t\\n ]|[^\\001-\\004\\t\\n ]))?/ } |
()){ /#eol/ } | { /v4_name_convert/ } | { })*\n with tree\n {
\"default_realm\" = \"AMER.DELL.COM <http://AMER.DELL.COM>\" } {
\"ticket_lifetime\" = \"36000\" } { \"forwardable\" = \"true\" } { }
{ \"default_tgs_enctypes\" = \"arcfour-hmac-md5\" } {
\"default_tgs_enctypes\" = \"aes128-cts-hmac-sha1-96\" } {
\"default_tgs_enctypes\" = \"aes256-cts-hmac-sha1-96\" } {
\"default_tkt_enctypes\" = \"arcfour-hmac-md5\" } {
\"default_tkt_enctypes\" = \"aes128-cts-hmac-sha1-96\" } {
\"default_tkt_enctypes\" = \"aes256-cts-hmac-sha1-96\" }"
If I manually fix up the /etc/krb5.conf file:
[libdefaults]
default_tgs_enctypes = arcfour-hmac-md5 aes128-cts-hmac-sha1-96
aes256-cts-hmac-sha1-96
default_tkt_enctypes = arcfour-hmac-md5 aes128-cts-hmac-sha1-96
aes256-cts-hmac-sha1-96
default_realm = AMER.DELL.COM <http://AMER.DELL.COM>
ticket_lifetime = 36000
forwardable = true
[domain_realm]
auspslpltinf1.us.dell.com <http://auspslpltinf1.us.dell.com> =
AMER.DELL.COM <http://AMER.DELL.COM>
the augtool invocation works fine.
Spike
On Thu, Feb 18, 2021 at 12:46 PM Spike White <[email protected]
<mailto:[email protected]>> wrote:
augeas experts,
I am trying to update my /etc/krb5.conf. I'm testing (for now)
with a /tmp/krb5.conf file on RHEL7.
I have to have it not autoload all files, as there's some syntax
in some other files augeas doesn't understand.
Here is my old krb5.aug file (which works).
set /augeas/load/Krb5/incl "/tmp/krb5.conf"
set /augeas/load/Krb5/lens "Krb5.lns"
load
defnode realms_AMER_DELL_COM /files/tmp/krb5.conf/realms/realm[. =
'AMER.DELL.COM <http://AMER.DELL.COM>' ]
defnode libdefaults /files/tmp/krb5.conf/libdefaults
set $realms_AMER_DELL_COM AMER.DELL.COM <http://AMER.DELL.COM>
set $realms_AMER_DELL_COM/#comment LANDMARK
set $realms_AMER_DELL_COM/auth_to_local[1] 'RULE:[1:$1]'
set $realms_AMER_DELL_COM/auth_to_local[2] 'DEFAULT'
set $libdefaults/default_realm AMER.DELL.COM <http://AMER.DELL.COM>
set $libdefaults/dns_lookup_kdc true
set /files/etc/krb5.conf/libdefaults/rdns false
set /files/etc/krb5.conf/domain_realm/.isus.emc.com
<http://isus.emc.com> AMER.DELL.COM <http://AMER.DELL.COM>
save
I run it thusly: augtool --noautoload -f krb5.aug
# Configuration snippets may be placed in this directory as well
includedir /etc/krb5.conf.d/
[logging]
default = FILE:/var/log/krb5libs.log
kdc = FILE:/var/log/krb5kdc.log
admin_server = FILE:/var/log/kadmind.log
[libdefaults]
default_realm = AMER.DELL.COM <http://AMER.DELL.COM>
dns_lookup_kdc = true
default_etypes_des = des-cbc-crc
default_tgs_enctypes = arcfour-hmac-md5
default_tkt_enctypes = arcfour-hmac-md5
[realms]
AMER.DELL.COM <http://AMER.DELL.COM> = {
#LANDMARK
auth_to_local = RULE:[1:$1]
auth_to_local = DEFAULT
}
[domain_realm]
# .example.com <http://example.com> = EXAMPLE.COM <http://EXAMPLE.COM>
# example.com <http://example.com> = EXAMPLE.COM <http://EXAMPLE.COM>
.isus.emc.com <http://isus.emc.com> = AMER.DELL.COM
<http://AMER.DELL.COM>
Here's my problem. I want to restrict my /default_tgs_enctypes
and default_tkt_enctypes to only the strong-ish encryption types
(I know the arcfour-hmac-md5 is not terribly strong today).
so if i change my krb5.aug file to this:
set /augeas/load/Krb5/incl "/tmp/krb5.conf"
set /augeas/load/Krb5/lens "Krb5.lns"
load
defnode realms_AMER_DELL_COM /files/tmp/krb5.conf/realms/realm[. =
'AMER.DELL.COM <http://AMER.DELL.COM>' ]
defnode libdefaults /files/tmp/krb5.conf/libdefaults
set $realms_AMER_DELL_COM AMER.DELL.COM <http://AMER.DELL.COM>
set $realms_AMER_DELL_COM/#comment LANDMARK
set $realms_AMER_DELL_COM/auth_to_local[1] 'RULE:[1:$1]'
set $realms_AMER_DELL_COM/auth_to_local[2] 'DEFAULT'
set $libdefaults/default_realm AMER.DELL.COM <http://AMER.DELL.COM>
set $libdefaults/dns_lookup_kdc true
set $libdefaults/default_tgs_enctypes[1] 'arcfour-hmac-md5'
set $libdefaults/default_tgs_enctypes[2] 'aes128-cts-hmac-sha1-96'
set $libdefaults/default_tgs_enctypes[3] 'aes256-cts-hmac-sha1-96'
set $libdefaults/default_tkt_enctypes[1] 'arcfour-hmac-md5'
set $libdefaults/default_tkt_enctypes[2] 'aes128-cts-hmac-sha1-96'
set $libdefaults/default_tkt_enctypes[3] 'aes256-cts-hmac-sha1-96'
set /files/etc/krb5.conf/libdefaults/rdns false
set /files/etc/krb5.conf/domain_realm/.isus.emc.com
<http://isus.emc.com> AMER.DELL.COM <http://AMER.DELL.COM>
save
It fails. The only extra lines are the
$libdefaults/default_tgs_enctypes and the
$libdefaults/default_tkt_enctypes set lines.
However, if I change my /tmp/krb5.conf file so that
3 default_tgs_enctypes and 3 default_tkt_enctypes already exist,
it succeeds.
Example before:
...
[libdefaults]
...
default_tgs_enctypes = des-cbc-crc des-cbc-crc des-cbc-crc
default_tkt_enctypes = des-cbc-crc des-cbc-crc des-cbc-crc
then run augtool --noautoload -f /tmp/krb5.aug
After:
[libdefaults]
...
default_tgs_enctypes = arcfour-hmac-md5 aes128-cts-hmac-sha1-96
aes256-cts-hmac-sha1-96
default_tkt_enctypes = arcfour-hmac-md5 aes128-cts-hmac-sha1-96
aes256-cts-hmac-sha1-96
I thought "set" operator was supposed to create a node entry if it
didn't already exist.
Why does it fail to modify these entries, unless the lines already
exist, with 3 entries already?
Spike
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