Linux server boot issue suspected due to incorrect sshd_config configuration Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)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 ForbiddenPublic key authentication Permission denied (publickey)SSH Key Requires A Password Through SSH But Not Through ClientError while installing Ubuntu server due to RAID configurationIssues joining Linux server with AD
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Linux server boot issue suspected due to incorrect sshd_config configuration
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)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 ForbiddenPublic key authentication Permission denied (publickey)SSH Key Requires A Password Through SSH But Not Through ClientError while installing Ubuntu server due to RAID configurationIssues joining Linux server with AD
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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 4 hours ago
Adesh HambirAdesh Hambir
1
New contributor
Adesh Hambir is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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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 4 hours ago
Adesh HambirAdesh Hambir
1
New contributor
Adesh Hambir is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Is the server actually running Ubuntu? or RedHat? You may be able to validate thesshd_configfile by runningsshd -torsshd -T
– steeldriver
3 hours ago
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
1 hour ago
Sorry RedHat is off-topic - you can ask on unix.stackexchange.com
– steeldriver
1 hour ago
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 4 hours ago
Adesh HambirAdesh Hambir
1
New contributor
Adesh Hambir is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
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 4 hours ago
Adesh HambirAdesh Hambir
1
New contributor
Adesh Hambir is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 hours ago
Adesh HambirAdesh Hambir
1
New contributor
Adesh Hambir is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 hours ago
Adesh HambirAdesh Hambir
1
New contributor
Adesh Hambir is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 hours ago
Adesh HambirAdesh Hambir
1
asked 4 hours ago
Adesh HambirAdesh Hambir
1
1
New contributor
Adesh Hambir is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Adesh Hambir is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Adesh Hambir is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Is the server actually running Ubuntu? or RedHat? You may be able to validate thesshd_configfile by runningsshd -torsshd -T
– steeldriver
3 hours ago
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
1 hour ago
Sorry RedHat is off-topic - you can ask on unix.stackexchange.com
– steeldriver
1 hour ago
add a comment |
Is the server actually running Ubuntu? or RedHat? You may be able to validate thesshd_configfile by runningsshd -torsshd -T
– steeldriver
3 hours ago
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
1 hour ago
Sorry RedHat is off-topic - you can ask on unix.stackexchange.com
– steeldriver
1 hour ago
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
3 hours ago
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
3 hours ago
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
1 hour ago
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
1 hour ago
Sorry RedHat is off-topic - you can ask on unix.stackexchange.com
– steeldriver
1 hour ago
Sorry RedHat is off-topic - you can ask on unix.stackexchange.com
– steeldriver
1 hour ago
add a comment |
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Is the server actually running Ubuntu? or RedHat? You may be able to validate the
sshd_configfile by runningsshd -torsshd -T– steeldriver
3 hours ago
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
1 hour ago
Sorry RedHat is off-topic - you can ask on unix.stackexchange.com
– steeldriver
1 hour ago