VMware VCENTER SERVER 4.0 - GETTING STARTED UPDATE 1 Specifications Page 108
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Reconnect a Managed Host
Use the vSphere Client to reconnect a managed host to a vCenter Server system.
Procedure
1 From the vSphere Client connected to a vCenter Server system, display the inventory and click the
managed host to reconnect.
2 Right-click the host and select Connect from the pop-up menu.
When the managed host’s connection status to vCenter Server is changed, the statuses of the virtual
machines on that managed host are updated to reflect the change.
Reconnecting Hosts After Changes to the vCenter Server SSL Certificate
vCenter Server uses an SSL certificate to encrypt and decrypt host passwords stored in the vCenter Server
database. If the certificate is replaced or changed, vCenter Server cannot decrypt host passwords, and therefore
cannot connect to managed hosts.
If vCenter Server fails to decrypt a host password, the host is disconnected from vCenter Server. You must
reconnect the host and supply the login credentials, which will be encrypted and stored in the database using
the new certificate.
Remove a Host from a Cluster
When a host is removed from a cluster, the resources it provides are deducted from the total cluster resources.
The virtual machines deployed on the host are either migrated to other hosts within the cluster, or remain with
the host and are removed from the cluster, depending on the state of the virtual machines when the host is
removed from the cluster.
You can remove hosts from a cluster by selecting them in the inventory and dragging them to a new location
within the inventory. The new location can be a folder as a standalone host or another cluster.
Prerequisites
Before you can remove a host from a cluster, you must power off all virtual machines that are running on the
host, or migrate the virtual machines to a new host using vMotion.
Procedure
1 From the vSphere Client connected to a vCenter Server system, display the inventory.
2 Right-click the appropriate managed host icon in the inventory panel, and select Enter Maintenance
Mode from the pop-up menu.
If all virtual machines on the host are not powered off, the host will not enter maintenance mode.
If the host is inside a DRS-enabled cluster, entering maintenance mode causes DRS to attempt to
automatically evacuate powered-on virtual machines from the host using vMotion.
3 In the confirmation dialog that appears, clickYes.
The confirmation dialog also asks if you want to automatically evacuate virtual machines that are not
powered on from the host. This is useful if you want those virtual machines to remain registered to a host
within the cluster.
The host icon changes and the term “maintenance mode” is added to the name in parentheses.
vCenter Server and Host Management
108 VMware, Inc.
- Update 1 1
- ESXi 5.0 1
- EN-000775-01 1
- 2 VMware, Inc 2
- Contents 3
- 4 VMware, Inc 4
- VMware, Inc. 5 5
- 6 VMware, Inc 6
- Management 7
- 8 VMware, Inc 8
- Updated Information 9
- 10 VMware, Inc 10
- Virtualization Basics 11
- 12 VMware, Inc 12
- VMware, Inc. 13 13
- 14 VMware, Inc 14
- VMware, Inc. 15 15
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- VMware, Inc. 17 17
- 18 VMware, Inc 18
- VMware, Inc 19
- 20 VMware, Inc 20
- VMware, Inc. 21 21
- 22 VMware, Inc 22
- Using the vSphere Client 3 23
- Panel Sections 24
- View Virtual Machine Console 25
- Using Lists 26
- Custom Attributes 27
- Select Objects 28
- Install Plug-Ins 29
- Disable and Enable Plug-Ins 29
- Remove Plug-Ins 29
- Save vSphere Client Data 30
- Working with Active Sessions 30
- VMware, Inc. 31 31
- 32 VMware, Inc 32
- Host Configuration 33
- Configuring vCenter Server 33
- 34 VMware, Inc 34
- VMware, Inc. 35 35
- 36 VMware, Inc 36
- Configure Runtime Settings 37
- 38 VMware, Inc 38
- Configure SNMP Settings 39
- View Ports Settings 39
- Configure Timeout Settings 40
- Configure Logging Options 40
- VMware, Inc. 41 41
- Configure SSL Settings 42
- Configure Advanced Settings 42
- VMware, Inc. 43 43
- 44 VMware, Inc 44
- VMware, Inc. 45 45
- 46 VMware, Inc 46
- Appliance 47
- 48 VMware, Inc 48
- VMware, Inc. 49 49
- 50 VMware, Inc 50
- 52 VMware, Inc 52
- VMware, Inc. 53 53
- 54 VMware, Inc 54
- VMware, Inc. 55 55
- 56 VMware, Inc 56
- Organizing Your Inventory 6 57
- Create Datacenters 58
- Add Hosts 58
- Create Clusters 59
- Create Resource Pools 60
- Create Datastores 61
- Create Host-Wide Networks 62
- VMware, Inc. 63 63
- 64 VMware, Inc 64
- Add a Distributed Port Group 65
- 66 VMware, Inc 66
- 68 VMware, Inc 68
- Licensing for ESXi 5.0 Hosts 69
- 70 VMware, Inc 70
- Calculating the vRAM Usage 71
- Compliance Rules 71
- Solution Licensing 72
- Example: Standalone Scenario 73
- About the License Portal 74
- Managing Licenses 75
- View License Information 76
- VMware, Inc. 77 77
- Export License Information 78
- VMware, Inc. 79 79
- 80 VMware, Inc 80
- Viewing License Use 81
- 82 VMware, Inc 82
- VMware, Inc. 83 83
- Details for a License Key 84
- Export a License Use Report 85
- 86 VMware, Inc 86
- VMware, Inc. 87 87
- 88 VMware, Inc 88
- System Log Files 8 89
- External System Logs 90
- Export System Log Files 90
- Chapter 8 System Log Files 91
- VMware, Inc. 91 91
- Collecting Log Files 92
- Collect vSphere Log Files 93
- Collect ESXi Log Files 93
- ESXi VMkernel Files 93
- 94 VMware, Inc 94
- Managing Tasks 95
- View Recent Tasks 96
- View Scheduled Tasks 96
- Cancel a Task 97
- Schedule Tasks 97
- Create a Scheduled Task 98
- Canceling Scheduled Tasks 99
- Change or Reschedule a Task 100
- Remove a Scheduled Task 100
- Managing Events 101
- Filter the Events List 102
- Export Events Data 103
- Trigger and Alarm on an Event 103
- Report Errors to VMware 104
- Components 10 105
- Starting vCenter Server 106
- Disconnect a Managed Host 107
- Remove a Host from a Cluster 108
- VMware, Inc. 109 109
- 110 VMware, Inc 110
- Migrating Virtual Machines 12 111
- Cold Migration 112
- Migration with vMotion 113
- 114 VMware, Inc 114
- VMware, Inc. 115 115
- 116 VMware, Inc 116
- CPU Compatibility and EVC 117
- CPU Families and Feature Sets 118
- EVC Requirements 119
- Create an EVC Cluster 120
- VMware, Inc. 121 121
- 122 VMware, Inc 122
- CPU Compatibility Masks 123
- 124 VMware, Inc 124
- VMware, Inc. 125 125
- 126 VMware, Inc 126
- VMware, Inc. 127 127
- 4 Select a disk format 128
- VMware, Inc. 129 129
- 130 VMware, Inc 130
- VMware, Inc. 131 131
- 132 VMware, Inc 132
- Storage vMotion Examples 133
- Network Limits 134
- Datastore Limits 134
- Host Limits 135
- 136 VMware, Inc 136
- Using vCenter Maps 13 137
- Map Icons 138
- View vCenter Maps 139
- Print vCenter Maps 140
- Export vCenter Maps 140
- Numerics 141
- 142 VMware, Inc 142
- VMware, Inc. 143 143
- 144 VMware, Inc 144
- VMware, Inc. 145 145
- 146 VMware, Inc 146
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