If you have encountered the following error message trying to migrate or synchronize an IMAP mailbox using the great IMAPsync.pl script : Host1: mail1.domain.tld says it has NO CAPABILITY for AUTHENTICATE LOGIN Then you may want to look at the following : – Bad credentials – Special character in the password that need to be… Read More »
If you already have a certificate generated by a certificate authority (or maybe a wildcard certificate), you can use the following procedure to configure it on your iDRAC, so you can get rid of the browser security warning. We will use the iDRAC “racadm” command line utility (if you do not have it already, you… Read More »
Having the following issue connecting to a device using SSH after upgrading to macOS High Sierra 10.13.2? Unable to negotiate with 0.0.0.0 port 22: no matching cipher found. Their offer: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se This is an expected behavior if you attempt to connect to a legacy system or network device running older version of SSH. To workaround… Read More »
Here is how to quickly show the connected clients to a NFS server. It might be useful to know before rebooting the server! On the server, execute the following command (replace <> with the NFS server IP address) :
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netstat -an | grep <NFS.Server.IP>:2049 |
Example :
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netstat -an | grep 192.168.45.32:2049 |
You should see a similar output : tcp 0 0 192.168.45.32:2049 192.168.45.52:840… Read More »
On Debian 9, the traditional “rc.local” has been deprecated. For traditional Linux users and administrators, there is a way to get it back using SystemD. See the procedure below : 1. Edit the non-existing file “rc-local.service” :
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vi /etc/systemd/system/rc-local.service |
1.1. Add the following content to “/etc/systemd/system/rc-local.service” :
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[Unit] Description=/etc/rc.local ConditionPathExists=/etc/rc.local [Service] Type=forking ExecStart=/etc/rc.local start TimeoutSec=0 StandardOutput=tty RemainAfterExit=yes SysVStartPriority=99 [Install] WantedBy=multi-user.target |
2. Edit the “rc.local” file :
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vi /etc/rc.local |
Having the following error while executing a R1Soft backup on a Linux server? Failed backup of LVM configuration Failed to execute command ‘lvm.static pvs -o pv_fmt,pv_uuid,dev_size,pv_name,pv_mda_free,pv_mda_size,pv_all,seg_all,pvseg_all,vg_all,lv_all –nameprefixes –noheadings –units b –nosuffix –unquoted’ This seem to be related to the latest version. Apparently Idera are aware of the issue and working on a permanent fix. In… Read More »
You probably experienced the following issue, running “Yum update” on a RHEL 7.3 system : error: Failed to initialize NSS library There was a problem importing one of the Python modules required to run yum. The error leading to this problem was: cannot import name ts Please install a package which provides this module, or… Read More »
Windows evolved a lot in the last years, what was once a headache for system administrators is now behind us since a few years. Microsoft now allow to convert a installed Windows Server 2016 Standard to Datacenter without having to re-install. To achieve this, you will need to have in hand your Windows Server 2016… Read More »
I had the luck of experiencing the following blue screen on a Windows Server 2008 R2 domain controller server at boot lately : *** STOP: 0x0000007E (0xFFFFFFFFC0000005, 0xFFFFF880018C9836, 0xFFFFF880009A9008, 0xFFFFF880009A8860) Related facts with this server : – Haven’t been rebooted since two years – Windows Updates haven’t been run for two years – Running minimalistic… Read More »
Having the following error output trying to start, restart or do a configtest on Apache server? Invalid command ‘ProxyPreserveHost’, perhaps misspelled or defined by a module not included in the server configuration This is likely caused because mod_proxy module is not present or disabled. To enable it, look out for the following in the main… Read More »