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Feb
5
comment Nagios nrpe custom plugin command not defined on localhost
As long as you don't add the check to any host, Nagios won't check it anywhere. But this still allows you to run the script manually using check_nrpe.
Feb
5
comment Nagios check_jstat
Please verify that the /usr/lib/nagios/plugins/check_jstat file is executable (using chmod 755 /usr/lib/nagios/plugins/check_jstat command) and that you have restarted NRPE and your Nagios server after adding the command.
Feb
5
answered Nagios nrpe custom plugin command not defined on localhost
Feb
5
comment Permission denied when running nagios plugin
Did you actually define the command in your config?
Feb
3
revised Upgrade curl to latest on CentOS 6.3
improved grammar and syntax
Feb
3
comment Server becomes unresponsive
It's hard to tell with the little information we have. The thing that stands out to me is that it tends to happen when you run your maintenance tasks. Can you try putting some more time between the different jobs (e.g. strart cronjobs further apart from each other)? Also, try running cronjob with a lower priority (see man nice) to see if that helps. Note that the jobs will take longer when using nice, so keep that in mind when (re-)scheduling the jobs.
Feb
3
suggested approved edit on Upgrade curl to latest on CentOS 6.3
Feb
1
comment How do I setup a “subdomain empty” DNS CNAME?
Technically domain1.com shouldn't serve the *.domain1.com DNS record. But as @MichaelHampton said, redirect any non-www requests to it's www equivalent, so the subdomain record is triggered.
Feb
1
comment DNS requests from a local server to another local server
I'm not really sure I understand, you say 1.2.3.4 should not be available from the outside and it doesn't seem to be (hence the timeout). Do you want 1.2.3.4 to work locally on the 10.10.10.20 machine?
Jan
11
comment domain name isn't added to hostname
@quimnuss Done.
Jan
11
answered domain name isn't added to hostname
Jan
11
comment domain name isn't added to hostname
Windows machines by default only look for machines within their own (AD) domain or workgroup. It could only be resolved if your Windows machines are in an AD domain and that name is the same as the one configured on the Ubuntu machine. If it's not, you need to apply the fix as suggested by @darklion
Jan
7
revised How to Unban an IP properly with Fail2Ban
added tftd's comment to the answer, since it's an important distinguishment
Jan
7
suggested approved edit on How to Unban an IP properly with Fail2Ban
Dec
7
reviewed No Action Needed View trace route through interface
Dec
2
comment It's OK to only have SMTP for server-to-server communication?
That depends on whether or not the antispam appliance supports TLS. If it does, I would strongly suggest using it, so that traffic between those servers is encrypted. Otherwise, a "man in the middle" could easily read all the e-mails and I don't think you (or your employer) would want that.
Nov
30
comment Error 13 when executing mysqldump to export a database into a cvs file
SELinux does not seem to be enabled on your system, otherwise the ls -Z should show the contexts applied, but it shows none. So it must be a pure ownership/rights problem.
Nov
18
comment Postfix cannot start but dovecot is ok
Do you still have enough free disk space and memory available?
Nov
17
comment mysql recovery process cannot proceed
I'm assuming 1102472406659 is your last entry in the binary log and after that it starts writing to the database. Depending on how many tables/rows there are and what your hardware setup looks like, writing 400GB can take a long time. I wouldn't be suprised that if there are many rows and the hardware is average, this process could take up to 24-48 hours. Try running mysql -e 'show full processlist' in a seperate console to see if it's running any queries.
Nov
17
comment Odd entries in Debian Linux /var/log/auth.log
I'm assuming you anonimized the username to user1, but does it ring any bells? Is it used by any daemons/services perhaps?