2022-01-30 – Swimming
The speed is 2'44"/100M with 69 strokes, faster than before again.
Result
Blog
Windows 7 File Recovery for Windows 10/11
Windows 7 File Recovery for Windows 10/11
class invalid
The error is shown as below
The validation information class requested was invalid. (0x80070544).To fix this issue, prefix the username with target system name. For example
truenas\backup_userLocation cannot be used
The error is shown as below
0x80070544: The specified network location cannot be used.This is because no write access to the target folder.
References
Error code 0x80070544 when attempting to back up Windows 8 onto NAS over Samba
Correct VIM auto indent issue for YAML files
Correct VIM auto indent issue for YAML files
Add following lines in ~/.vimrc
filetype plugin indent on
autocmd FileType yaml setlocal ts=2 sts=2 sw=2 expandtabReferences
Proxmox VM with AVX support
Proxmox VM with AVX support
To install MongoDB in Proxmox VM, the CPU needs to have AVX support. Otherwise, following error appears
WARNING: MongoDB 5.0+ requires a CPU with AVX support, and your current system does not appear to have that!Solution
Change CPU type to host, which by pass the CPU simulation.
For container cluster, such as docker swarm, kubernetes, MongoDB might need to be run on specific worker node which have CPU type equals to host.
Impact
Once the CPU set to be host, the live migration may not work, because the hosts have different CPU type. But host will give maximum performance.
References
AVX2
KVM: Which CPU for VM ('host' vs 'kvm64') to use for web load?
Remove entry in ~/.ssh/known_hosts
Remove entry in ~/.ssh/known_hosts
This is required if host key replaced in target server.
ssh-keygen -R HOSTNAME
ssh-keygen -R IP_ADDRESSReferences
Create join command for Kubernetes master
Create join command for Kubernetes master
kubeadm token create --print-join-commandReferences
Tasks after cloned Ubuntu VM
Table of Contents
Tasks after cloned Ubuntu VM
After cloned Ubuntu VM, some tasks are required.
Change IP
Change Hostname
- Change
/etc/hostname - Change
/etc/hosts
Recreate SSH keys
rm /etc/ssh/ssh_host_*
dpkg-reconfigure openssh-serverReferences
Reset kubernetes master or work
Table of Contents
Reset kubernetes master or work
Reinit
After run init, following error was occurred.
dial tcp 127.0.0.1:10248: connect: connection refused.Run following command to reinit kubernetes master or worker
sudo mkdir /etc/docker
cat <<EOF | sudo tee /etc/docker/daemon.json
{
"exec-opts": ["native.cgroupdriver=systemd"],
"log-driver": "json-file",
"log-opts": {
"max-size": "100m"
},
"storage-driver": "overlay2"
}
EOF
sudo systemctl enable docker
sudo systemctl daemon-reload
sudo systemctl restart docker
sudo kubeadm resetMaster
sudo kubeadm initWorker
Join cluster
kubeadm join ...Label it as worker
kubectl label node kworker1 node-role.kubernetes.io/worker=workerInstall Network Policy Provider
Following messages are printed to create pod network.
You should now deploy a pod network to the cluster.
Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
https://kubernetes.io/docs/concepts/cluster-administration/addons/Install Weave Net for NetworkPolicy.
kubectl apply -f "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')"References
Kubernetes kubeadm init fails due to dial tcp 127.0.0.1:10248: connect: connection refused
kubernetes cluster master node not ready
Weave Net for NetworkPolicy
2022-01-24 – Swimming
2022-01-24 – Swimming
Faster than before again.
Result
Rescan Proxmox Disks
Rescan Proxmox Disks
There are many reasons that some dangling disk images files exists in Proxmox folder. To remove them from the Proxmox storage, might not be possible, and they might be not shown in VM hardware items as well.
Use rescan command
This is to fix the following issues
- Disk size change
- Disk images with no owner
qm rescanRename or move old disk
If rescan can not fix the issue, rename the old disk or disk folder, then restart VM to confirm the disk file is not necessary. Then remove disk.