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Archive for the 'NIX Posts' Category

DD-WRT: Network Performance Tuning

It became apparent that with the growing push for more content on web pages and general media content, my router began to perform rather inadequately.  Inadequately to the point where it was rebooting spontaneously.  Below is what the situation looked like.  Below is an example of high SIRQ's inundating the environment:  Mem: 116784K used, 396932K free, […]

Internal Database Error encountered: Could not connect to LDAP server host idmipa01.nix.mds.xyz port 636 Error netscape.ldap.LDAPException: Authentication failed (48)

Restore VM's from snapshot.  Yes, this is a new attempt at restoring some FreeIPA hosts that have been, ahem, neglected slightly to the point where things expired and don't work.  A few unexpected reboots and FS corruption didn't help the matter either.  Regardless, the recovery will in many ways show off the restoration capabilities of.FreeIPA which […]

vmware: no healthy upstream

After a hard reset, a greeting of: no healthy upstream pops up from the vSphere Client.  Login as root and issue: service-control –start vmware-vpxd to see if there's any  additional information in regards to this error.  You may  or may not receive more info.  Check the time and NTP settings. There's a good chance time […]

NTPD: Setting up an NTP server on DD-WRT or OpenWRT

Recent power outages and ISP outages left my network without a proper internal NTP server which was, coincidently, installed on an ESXi host.  Having to revert to an external NTP server for the time being, a recent outage with my ISP highlighted the fact that even that isn't enough.  The ISP outage () made it […]

DD-WRT: DHCP not working not assigning IP – Local DNS fix

Not getting a DHCP IP?  Instead getting: 169.254 169.254.149.164 The tcpdump of the traffic from the affected DD-WRT router shows the DHCP sending over a valid IP yet said IP address is not assigned to the 5Ghz WIFI band? 23:54:16.735841 bb:bb:bb:bb:bb:bb > aa:aa:aa:aa:aa:aa, ethertype 802.1Q (0x8100), length 366: vlan 1, p 0, ethertype IPv4 (0x0800), […]

DD-WRT: Missing 5Ghz settings and kern.warn kernel: wl driver 7.14.164.18 (r692288) failed with code 1

If the Wireless setup page is missing the 5GHz or any GHz settings, or other pages are missing this info:it could be a sign of exhausted nvram.  A clue to this is when resetting the nvram to defaults, all options become available again.  But what about this message? kern.warn kernel: wl driver 7.14.164.18 (r692288) failed […]

r8169 0000:09:00.0: no dedicated PHY driver found for PHY ID 0x001cc912, maybe realtek.ko needs to be added to initramfs?

After regenerating the initramfs using dracut -f, we end up seeing the following, rather disappointing message: r8169 0000:09:00.0: no dedicated PHY driver found for PHY ID 0x001cc912, maybe realtek.ko needs to be added to initramfs? More specifically, in order to fix a QLogic card firmware issue on the following Linux kernel level, which foced the […]

gnome-session[2995]: WARNING: Unable to find required component ‘gnome-shell’

Gnome session issues: Apr  9 17:02:55 rfc1178-01 systemd[1]: Cannot add dependency job for unit sys-kernel-security.mount, ignoring: Unit sys-kernel-security.mount failed to load: Invalid argument. See system logs and 'systemctl status sys-kernel-security.mount' for details. Apr  9 17:02:55 rfc1178-01 systemd[1]: Stopping Remote desktop service (VNC)… Apr  9 17:02:55 rfc1178-01 gnome-session[2885]: gnome-session[2885]: Gdk-WARNING: gnome-session: Fatal IO error 11 (Resource […]

FATA[0000] listing images: rpc error: code = Unknown desc = layer not known

Getting this? [root@rhcpm03 ~]# crictl images FATA[0000] listing images: rpc error: code = Unknown desc = layer not known [root@rhcpm03 ~]# Solve it with this: mv /var/lib/containers/storage/overlay-images /root/ and reboot.  Result: [root@rhcpm03 ~]# crictl images IMAGE                                       […]

github: fatal: Authentication failed for

Seeing this? github: fatal: Authentication failed for Renew the github token: Github Login -> Settings -> Developer Settings -> Personal Access Tokens Expired today. Use the new token! Cheers,    


     
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