Guidelines and Limitations
The guidelines and limitations for installing and upgrading Cisco DCNM are as follows:
General Guidelines and Limitations
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Adhere to the following password requirements. If you do not comply with the requirements, the DCNM application might not function properly:
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It must be at least 8 characters long and contain at least one alphabet and one numeral.
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It can contain a combination of alphabets, numerals, and special characters.
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All special characters, except %$^=;.*\'" <SPACE> is allowed in the password.
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After upgrade, you can login to the DCNM server using the new sysadmin password. However, you must use the old DCNM password to login to the Web UI.
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The new Administrative password that is entered is used in the following scenarios.
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—accessing the DCNM appliance via its console.
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—accessing the appliance via SSH
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—for applications running on the appliance, for example, Postgres DBMS
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Do not interrupt the boot process (such as pressing the Ctrl+ALT + DELETE keys) when installing DCNM. If you interrupt, you must restart the installation process.
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Ensure that you configure the timezone after installation or upgrade, before performing any other operations on the Cisco DCNM Appliance. Use the NTP server for configuring timezones.
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To check the status of the running Postgres database in Native HA setup, use following command:
dcnm# su - postgres -c dcnm# pg_ctl -D /usr/local/cisco/dcm/db/data status
Do not use the systemctl command.
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Do not begin the password with Hash (#) symbol. Cisco DCNM considers the password as an encrypted text if it begins with # symbol.
Fresh Installation
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For Virtual Appliances (OVA/ISO), the installer installs the Operating system and Cisco DCNM components.
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The DCNM OVA cannot be deployed by connecting the vSphere client directly to the ESXi server.
Upgrade
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You can choose to discard the old performance manager (PM) data and continue to upgrade to DCNM Release 11.4(1). For instructions about how to drop performance manager data, see Performance Manager Data Management before Upgrading to Release 11.4(1). If you choose to retain the old PM data while you upgrade to Release 11.4(1), we recommend that you contact Cisco TAC for further assistance.
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Ensure that you do not perform inline upgrade from an SSH session. The session may timeout and result in an incomplete upgrade.