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Bonding in active-backup using linux bridges on Ubuntu 18

May 24, 2019 · 1 min read · ACTIVE-BACKUP LINUX UBUNTU UBUNTU-18 ·

Because this was WAAYY more difficult to find any decent doco on that I had ever expected, here is what worked for me I deleted the netplan config file at /etc/netplan/01-netcfg.yaml 1rm /etc/netplan/01-netcfg.yaml Ensure that 'bonding' appears in /etc/modules (I's not here by default) 1echo bonding >> …

Ceph Nautilus - Required devices (block and data) not present for bluestore

May 10, 2019 · 2 min read · CEPH CEPH-NAUTILUS TROUBLESHOOTING ·

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When using the new ceph-volume scan and activate commands on ceph Nautilus after an upgrade from Luminous I was getting the following message 1root@ceph2 ~]# ceph-volume simple activate --all 2--> activating OSD specified in /etc/ceph/osd/37-11af5440-dadf-40e3-8924-2bbad3ee5b58.json 3Running command: /bin/ln -snf …

Metadata service in DHCP namespace

Mar 29, 2019 · 1 min read · DHCP ·

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Some gold info http://kimizhang.com/metadata-service-in-dhcp-namespace/

Whats inside an APT package?

Feb 26, 2019 · 1 min read · APT LINUX ·

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1sudo dpkg --listfiles docker-ce

Generate OTP keys in linux - Extracting FreeOTP keys

Feb 22, 2019 · 1 min read · LINUX KEYGEN ·

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1apt install oathtool 2oathtool --totp -b -d 6 KY3OUPMUYWCKS53F [https://stackpointer.io/unix/linux-totp-password-generator/629/][https://stackpointer.io/unix/linux-totp-password-generator/629/] https://github.com/philipsharp/FreeOTPDecoder Enable USB debugging - …

Openstack - Manually edit VM

Feb 21, 2019 · 1 min read · OPENSTACK VM ·

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Find the host the VM is running on and the instance ID(Use console view to get instance ID) 1cp /etc/libvirt/qemu/instance-0000030a.xml . edit instance-0000030a.xml to be what you need it to be While the VM is running (Warning, will crash the VM) 1virsh destroy instance-0000030a 2virsh undefine instance-0000030a 3virsh …

Ceph scrubbing performance

Feb 16, 2019 · 2 min read · CEPH ·

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Original article here Ceph’s default IO priority and class for behind the scene disk operations should be considered required vs best efforts. For those of us who actually utilize our storage for services that require performance will quickly find that deep scrub grinds even the most powerful systems to a halt. Below …

List pools and their crush rule

Feb 12, 2019 · 1 min read · CEPH ·

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1ceph osd pool ls | while read line; do echo $line && ceph osd pool get $line crush_rule; done

error on subcontainer 'ia_addr' insert (-1)

Sep 15, 2018 · 1 min read · SNMP UBUNTU ·

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If you use SNMP on Ubuntu you might see this annoying log entry repeat itself in syslog Sep 15 17:29:34 myServer snmpd[3609]: error on subcontainer 'ia_addr' insert (-1) Easy fix is 1sed -i 's/Lsd/LS6d/g' /etc/default/snmpd 2service snmpd restart Original article

Dell S6000-ON Fan-out port configuration

Aug 27, 2018 · 2 min read · DELL-S600-ON PORT CONFIG OPENSWITCH ·

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Using Openswitch 2.3.1 on the Dell S6000-ON I was able to configure the fan-out \ breakout port configuration but the link was not coming up on my 10G switch or on the 4 sub interfaces generated by OPX. Use the following steps to solve that issue. Don't quote me on this but I believe that on the Dell S6000-ON ports …