Linux server boot issue suspected due to incorrect sshd_config configurationNFS server generating “invalid extent” on EXT4 system disk?how to limit resources to a shared ubuntu 10.04Suddenly remote NFS folders will not auto-mount when booting upbind9 and 172.16.0.0/20 networkConnection to FTP Always RefusedUbuntu Server 17.04 - 403 Forbidden
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Linux server boot issue suspected due to incorrect sshd_config configuration
NFS server generating “invalid extent” on EXT4 system disk?how to limit resources to a shared ubuntu 10.04Suddenly remote NFS folders will not auto-mount when booting upbind9 and 172.16.0.0/20 networkConnection to FTP Always RefusedUbuntu Server 17.04 - 403 Forbidden
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Recently one of our linux server in the cloud was not coming up after reboot. When we checked with vendor, he said it may be due to sshd_config file not configured properly. There was also file system corruption issue during that time. We are not sure if it was really a file system corruption issue or sshd_config file misconfiguration issue which made server unbootable.
The sshd_config file was configured as below:
AllowUsers user1 user2 user3 user4 user5
AllowUsers user6 user7
AllowUsers user8
AllowUsers user9
As per the vendor there can't be multiple entries for AllowUsers so the entries for user6 user7 user8 user9 are invalid.
AllowUsers user6 user7
AllowUsers user8
AllowUsers user9
I went though some blogs including Red-hat https://access.redhat.com/discussions/3872831 but it’s not clear from anywhere whether this is a correct configuration or not. Also, is there any way if sshd_config configuration can be validated?
server
asked Apr 15 at 20:58
Adesh HambirAdesh Hambir
1
add a comment
|
Recently one of our linux server in the cloud was not coming up after reboot. When we checked with vendor, he said it may be due to sshd_config file not configured properly. There was also file system corruption issue during that time. We are not sure if it was really a file system corruption issue or sshd_config file misconfiguration issue which made server unbootable.
The sshd_config file was configured as below:
AllowUsers user1 user2 user3 user4 user5
AllowUsers user6 user7
AllowUsers user8
AllowUsers user9
As per the vendor there can't be multiple entries for AllowUsers so the entries for user6 user7 user8 user9 are invalid.
AllowUsers user6 user7
AllowUsers user8
AllowUsers user9
I went though some blogs including Red-hat https://access.redhat.com/discussions/3872831 but it’s not clear from anywhere whether this is a correct configuration or not. Also, is there any way if sshd_config configuration can be validated?
server
asked Apr 15 at 20:58
Adesh HambirAdesh Hambir
1
1
Is the server actually running Ubuntu? or RedHat? You may be able to validate thesshd_configfile by runningsshd -torsshd -T
– steeldriver
Apr 15 at 22:12
Server is running Red Hat Enterprise Linux Server release 6.10 (Santiago). I tried to validate the file using sshd -t and sshd -T but it gives you some results only if there is any syntax error in sshd_config file. In my case it didn't gave me any error.
– Adesh Hambir
Apr 16 at 0:09
Sorry RedHat is off-topic - you can ask on unix.stackexchange.com
– steeldriver
Apr 16 at 0:10
add a comment
|
Recently one of our linux server in the cloud was not coming up after reboot. When we checked with vendor, he said it may be due to sshd_config file not configured properly. There was also file system corruption issue during that time. We are not sure if it was really a file system corruption issue or sshd_config file misconfiguration issue which made server unbootable.
The sshd_config file was configured as below:
AllowUsers user1 user2 user3 user4 user5
AllowUsers user6 user7
AllowUsers user8
AllowUsers user9
As per the vendor there can't be multiple entries for AllowUsers so the entries for user6 user7 user8 user9 are invalid.
AllowUsers user6 user7
AllowUsers user8
AllowUsers user9
I went though some blogs including Red-hat https://access.redhat.com/discussions/3872831 but it’s not clear from anywhere whether this is a correct configuration or not. Also, is there any way if sshd_config configuration can be validated?
server
asked Apr 15 at 20:58
Adesh HambirAdesh Hambir
1
Recently one of our linux server in the cloud was not coming up after reboot. When we checked with vendor, he said it may be due to sshd_config file not configured properly. There was also file system corruption issue during that time. We are not sure if it was really a file system corruption issue or sshd_config file misconfiguration issue which made server unbootable.
The sshd_config file was configured as below:
AllowUsers user1 user2 user3 user4 user5
AllowUsers user6 user7
AllowUsers user8
AllowUsers user9
As per the vendor there can't be multiple entries for AllowUsers so the entries for user6 user7 user8 user9 are invalid.
AllowUsers user6 user7
AllowUsers user8
AllowUsers user9
I went though some blogs including Red-hat https://access.redhat.com/discussions/3872831 but it’s not clear from anywhere whether this is a correct configuration or not. Also, is there any way if sshd_config configuration can be validated?
server
server
asked Apr 15 at 20:58
Adesh HambirAdesh Hambir
1
asked Apr 15 at 20:58
Adesh HambirAdesh Hambir
1
asked Apr 15 at 20:58
Adesh HambirAdesh Hambir
1
asked Apr 15 at 20:58
Adesh HambirAdesh Hambir
1
asked Apr 15 at 20:58
Adesh HambirAdesh Hambir
1
1
1
Is the server actually running Ubuntu? or RedHat? You may be able to validate thesshd_configfile by runningsshd -torsshd -T
– steeldriver
Apr 15 at 22:12
Server is running Red Hat Enterprise Linux Server release 6.10 (Santiago). I tried to validate the file using sshd -t and sshd -T but it gives you some results only if there is any syntax error in sshd_config file. In my case it didn't gave me any error.
– Adesh Hambir
Apr 16 at 0:09
Sorry RedHat is off-topic - you can ask on unix.stackexchange.com
– steeldriver
Apr 16 at 0:10
add a comment
|
1
Is the server actually running Ubuntu? or RedHat? You may be able to validate thesshd_configfile by runningsshd -torsshd -T
– steeldriver
Apr 15 at 22:12
Server is running Red Hat Enterprise Linux Server release 6.10 (Santiago). I tried to validate the file using sshd -t and sshd -T but it gives you some results only if there is any syntax error in sshd_config file. In my case it didn't gave me any error.
– Adesh Hambir
Apr 16 at 0:09
Sorry RedHat is off-topic - you can ask on unix.stackexchange.com
– steeldriver
Apr 16 at 0:10
1
1
Is the server actually running Ubuntu? or RedHat? You may be able to validate the
sshd_config file by running sshd -t or sshd -T– steeldriver
Apr 15 at 22:12
Is the server actually running Ubuntu? or RedHat? You may be able to validate the
sshd_config file by running sshd -t or sshd -T– steeldriver
Apr 15 at 22:12
Server is running Red Hat Enterprise Linux Server release 6.10 (Santiago). I tried to validate the file using sshd -t and sshd -T but it gives you some results only if there is any syntax error in sshd_config file. In my case it didn't gave me any error.
– Adesh Hambir
Apr 16 at 0:09
Server is running Red Hat Enterprise Linux Server release 6.10 (Santiago). I tried to validate the file using sshd -t and sshd -T but it gives you some results only if there is any syntax error in sshd_config file. In my case it didn't gave me any error.
– Adesh Hambir
Apr 16 at 0:09
Sorry RedHat is off-topic - you can ask on unix.stackexchange.com
– steeldriver
Apr 16 at 0:10
Sorry RedHat is off-topic - you can ask on unix.stackexchange.com
– steeldriver
Apr 16 at 0:10
add a comment
|
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1
Is the server actually running Ubuntu? or RedHat? You may be able to validate the
sshd_configfile by runningsshd -torsshd -T– steeldriver
Apr 15 at 22:12
Server is running Red Hat Enterprise Linux Server release 6.10 (Santiago). I tried to validate the file using sshd -t and sshd -T but it gives you some results only if there is any syntax error in sshd_config file. In my case it didn't gave me any error.
– Adesh Hambir
Apr 16 at 0:09
Sorry RedHat is off-topic - you can ask on unix.stackexchange.com
– steeldriver
Apr 16 at 0:10