/etc/paaswd add backup chmod chown cron crontab delete Edge Node elastic search ESXi filesystem free google cloud group hcx ifconfig ip kibana kubernetes linux meminfo memstat netstat networkctl networking NSX-T passwd permission Prometheus PSOD race condition root size top trim ubuntu unmap USB user vCenter VCSA vpostgres vsan vsphere 7.0
Recent 30 Posts
- vSAN “Datastore does not match current VM policy”Deploying new VM using vSAN policy will fail either with PBM error “No VASA Provider for schema namespace (VSAN) found” or “Datastore does not match current VM policy”. Snapshot […]
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- Fix NSX-T/Edge from filesystem READ ONLY(RO) stateAn issue at our NSX vSAN storage resulted in a corrupted state. Here are some steps you can take to attempt to revive the NSX-T Manager appliance back to […]
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- Cluster Tasks fails with “namespace” errorYou may experience issues where cluster task specially like putting the host in maintenance mode, deleting a cluster etc will fail with below error: 2020-12-21T12:43:56.848-08:00 info vpxd[10034] [Originator@6876 sub=MoHost […]
- HCX Network Extension HAThe High Availability feature for HCX Network Extension appliances was introduced in the version 4.3. This was a big deal, because if someone needed HA for their appliances that […]
- How to silence vSAN Health checksvSAN Health checks can be silenced through UI as well as RVC. Using both methods, we can silence the check and also restore any silent check. Through vSphere UI […]
- Scheduling tasks through Crontabcron is a utility which is used to schedule and execute the command at the scheduled time. crontab (cron table) is the file which contains the entries of the […]
- Check memory usage in Linux/UbuntuThere are various tools available which can be used to check and troubleshoot memory usage on a Linux/Ubuntu/Photon OS machines. I have tried listed few of them here. Please […]
- Install a Debian (Ubuntu) packageTo install a downloaded Debian (Ubuntu) package (.deb) :- # sudo dpkg -i packagename.deb # sudo dpkg -i /home/jay/Downloads/net-tools_1.60+git20181103.0eebece-1ubuntu5_amd64.deb Selecting previously unselected package net-tools. (Reading database … 197399 files […]
- All you need to know about User Management in LinuxA group is a set of users to whom a name is assigned. For example, group of ‘students’, ’employees’, ‘actors’, ‘developers’. A user can be part of one or […]
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- Networking Performance Troubleshooting in Linux– ping : This command is used to test network connectivity. It sends a 32 bytes ICMP (Internet Control Message Protocol) packet to the destination host. If the destination host […]
- Linux Networking commands– ifconfig : This utility is used to check the IP address assigned to each of the ethernet/interface : # ifconfig eth0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 inet […]
- Permissions in LinuxThe Linux filesystem gives us three types of permissions. Here is a simplified review: Owner permissions − The owner’s permissions specifies what actions the owner of the file can […]
- File system hierarchy in LinuxIn Unix/Linux everything is organized in the form of files, whether it’s devices, directories, files, etc. A file is a smallest unit in which the information is stored. Directories […]
- PSOD on ESXi version 7.0 Update 2 with a race condition by “portset lock acquire request”Please check “vmkernel.log” for following entries to confirm if you are affected by the the race condition bug The PSOD issue has been resolved by VMware in their future […]
- VCSA “wcp” service keeps crashing“wcp” service crashes due to which the ESXi host can not be put out of maintenance mode (other symptoms can also occurs however I have never come across those) […]
- Important ESXi Networking CommandsTo get the available virtual switches information on ESXi host :- # esxcfg-vswitch -l [root] esxcfg-vswitch -lSwitch Name Num Ports Used Ports Configured Ports MTU UplinksvSwitch0 6656 4 128 […]
- Deploy Mattermost on any public cloudBelow is an example to deploy it on Google Cloud Platform. But similar approach can be done for any cloud, AWS or Azure In today’s Enterprise, it is crucial […]
- Disable vSAN Modules during ESXi boot processSometimes the ESXi host may stuck for very long time while loading vSAN while ESXi reboot. To isolate the issue from vSAN, you may need to boot the host […]
- Deleting Inaccessible vSAN ObjectsSometimes you may see few objects in Inaccessible state in vSAN cluster. Any disruptive action like abrupt power failure, or swap objects could be the reason for inaccessible objects.If […]
- VAMI/Appliance management page unable to cleanup old backup tasks even though Retention policy is setFirst of all take proper snapshot of the vCenter before making any changes. Check the content of file “/storage/applmgmt/backup_restore/backup_schedule.json” and verify the value of parameter “max_count”. It should be […]
- vPostgres service fails to start on vCenter Appliance with FATAL error “bogus data in lock file postmaster.pid” on VCSAThis article helps to get the vPostgres service up if the service is failing to start with FATAL error “bogus data in lock file postmaster.pid” # service-control –start vmware-vpostgres […]
- vSAN EncryptionvSAN provides feature to encrypt the data at rest. Below are pre-requisites to enable vSAN encryption – You will need a Key Management Server (KMS) vCenter should establish a […]
- vpxd service crashes with ODBC error “ERROR: integer out of range” on vCenter 6.5vpxd service may crash due to out of range integer value for surr_key after long usage vpxd log will show error message like below :-[Vdb::IsRecoverableErrorCode] Unable to recover from […]
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- vSAN TRIM/UNMAPAutomated UNMAP/TRIM feature is available in VSAN 6.7U1 onwards. However it is disabled by default, and has to be enabled. This feature is supported only on VMs with Hardware […]
- vSAN Evacuation pre-check for Node, Diskgroup OR DiskYou can do a precheck for a vSAN Host, disk or diskgroup evacuation with with evacuate all data, ensure accessibility or no action options. vSAN ESXi host Evacuation Pre-check […]
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- vDS Out of SyncThis blog is focused on rectifying the vDS and making it in sync state. First, please you are not hitting a known BUG in vDS 6.6, check VMware Release […]
- vPostgres Database useful commandsCommand to connect vPostgres : /opt/vmware/vpostgres/current/bin/psql -d VCDB -U postgres We can also connect with the vPostgres database using pgAdmin tool : vPostgres configuration related files :- /storage/db/vpostgres/pg_hba.conf – […]
- vCenter Appliance Networking CommandsTool to check and modify the vCenter Appliance Network related configurations: # /opt/vmware/share/vami/vami_config_net Network eth0 configuration file : # /etc/systemd/network/10-eth0.network Command to list all open ports on PSC and […]
- Linux OS Run LevelsWhen any Linux system boots, init is the first process to kick in which is responsible for running other processes/start scripts. These processes then take care of initialization of the […]
- What’s new in vSphere 7.0Hurray! vSphere 7.0 is out. It’s a major release which has lots of new and additional features like LifeCycle Manager service, improved DRS, Assignable Hardware and more security with […]