o9 Solutions Senior Devops Engineer Interview Questions and Answers

Q1. What is ipconf.pl?
Ans. 
ipconf.pl is a Perl script used for configuring network interfaces on Linux systems.
• ipconf.pl is typically used to set up IP addresses, netmasks, gateways, and DNS servers on Linux machines.

• It can be used to automate the configuration of network interfaces during system setup or maintenance.

• The script may also be used to troubleshoot network connectivity issues by checking and modifying network settings.

• ipconf.pl is of...read more
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Q2. What is the difference between scan vip & node vip?
Ans. 
Scan VIP is used for load balancing traffic to multiple nodes, while Node VIP is assigned to a specific node for direct access.
• Scan VIP is a virtual IP address used for load balancing traffic across multiple nodes in a cluster.

• Node VIP is a virtual IP address assigned to a specific node in the cluster for direct access.

• Scan VIP is typically used for services that need to be highly available and distributed across multi...read more
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Q1. What is quarantile in Exadata?
Ans. 
Quarantile in Exadata is a feature that isolates problematic cells to prevent them from affecting the rest of the system.
• Quarantile is a feature in Exadata that identifies and isolates cells that are experiencing issues or failures.

• It helps prevent the spread of issues to other cells in the system, ensuring high availability and performance.

• Quarantiled cells are still accessible for diagnosis and maintenance, but are n...read more
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Q2. How to identify the master switch in Exadata?
Ans. 
The master switch in Exadata can be identified by checking the status of the cell server software.
• Check the status of the cell server software using the 'cellcli' command

• The cell server with the 'MS' role is the master switch

• The master switch can also be identified by checking the 'cellinit.ora' file
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Q3. What is spine switch & leaf switch in exadata?
Ans. 
Spine switch and leaf switch are networking components in Exadata used for connecting database servers and storage servers.
• Spine switch acts as the core of the network, connecting all leaf switches and providing high-speed connectivity.

• Leaf switches connect database servers and storage servers to the spine switch, facilitating communication between them.

• Exadata uses a leaf-spine network architecture for efficient data ...read more
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One of the node of a 3 node cluster is down. Explain the step by step process to troubleshoot the issue.

Shell script & terraform code output was asked.