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linux_wiki:os_install_vm_template [2016/05/09 22:36] billdozor [Add/Expand Storage] |
linux_wiki:os_install_vm_template [2016/09/28 22:05] billdozor [Add/Expand Storage] |
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| Line 11: | Line 11: | ||
| ---- | ---- | ||
| - | ===== Create the Virtual Machine ===== | + | ====== Create the Virtual Machine |
| * Create a new virtual machine. | * Create a new virtual machine. | ||
| Line 24: | Line 24: | ||
| ---- | ---- | ||
| - | ==== Partitioning ==== | + | ===== Partitioning |
| Red Hat Recommendations | Red Hat Recommendations | ||
| Line 51: | Line 51: | ||
| After a CentOS 7.2 minimal install, the disk usage with that partitioning looks like this:\\ | After a CentOS 7.2 minimal install, the disk usage with that partitioning looks like this:\\ | ||
| TODO - SCREENSHOT | TODO - SCREENSHOT | ||
| + | |||
| + | ---- | ||
| + | |||
| + | ====== System Configuration ===== | ||
| + | |||
| + | Modify the OS with changes you want to be included on ALL systems. They should be server role generic. | ||
| ---- | ---- | ||
| Line 96: | Line 102: | ||
| **Proceed to " | **Proceed to " | ||
| + | |||
| + | ---- | ||
| + | |||
| + | ===== CentOS 6: VM Cleanup ===== | ||
| + | |||
| + | Perform any other customizations/ | ||
| + | |||
| + | <code bash> | ||
| + | # Cleanup => Remove ssh host keys (so each deployed VM has a different fingerprint) | ||
| + | rm -f / | ||
| + | |||
| + | # Cleanup => Remove persistent rules and network hw address - prevents eth0 from incrementing | ||
| + | rm -f / | ||
| + | sed -i "/ | ||
| + | sed -i "/ | ||
| + | |||
| + | # Cleanup => Remove some of root's files | ||
| + | rm -f / | ||
| + | |||
| + | # Cleanup => remove tmp files | ||
| + | rm -rf /tmp/* | ||
| + | |||
| + | # Cleanup => stop auditd from logging, remove log files | ||
| + | # Stop any other service that actively logs to sub directories of /var/log | ||
| + | # Recommended to install sysstat (sar) during a post deployment phase. | ||
| + | service auditd stop | ||
| + | rm -rf /var/log/* | ||
| + | mkdir / | ||
| + | |||
| + | # Update locate' | ||
| + | updatedb | ||
| + | |||
| + | # Clear history and shutdown for template cloning | ||
| + | history -c && history -w | ||
| + | shutdown -P now | ||
| + | </ | ||
| + | |||
| + | * Create a VM Template from the powered off system. | ||
| ---- | ---- | ||
| Line 172: | Line 216: | ||
| **Proceed to " | **Proceed to " | ||
| - | |||
| - | ---- | ||
| - | |||
| - | ===== CentOS 6: VM Cleanup ===== | ||
| - | |||
| - | Perform any other customizations/ | ||
| - | |||
| - | <code bash> | ||
| - | # Cleanup => Remove ssh host keys (so each deployed VM has a different fingerprint) | ||
| - | rm -f / | ||
| - | |||
| - | # Cleanup => Remove persistent rules and network hw address - prevents eth0 from incrementing | ||
| - | rm -f / | ||
| - | sed -i "/ | ||
| - | sed -i "/ | ||
| - | |||
| - | # Cleanup => Remove some of root's files | ||
| - | rm -f / | ||
| - | |||
| - | # Cleanup => remove tmp files | ||
| - | rm -rf /tmp/* | ||
| - | |||
| - | # Cleanup => stop auditd from logging, remove log files | ||
| - | # Stop any other service that actively logs to sub directories of /var/log | ||
| - | # Recommended to install sysstat (sar) during a post deployment phase. | ||
| - | service auditd stop | ||
| - | rm -rf /var/log/* | ||
| - | mkdir / | ||
| - | |||
| - | # Update locate' | ||
| - | updatedb | ||
| - | |||
| - | # Clear history and shutdown for template cloning | ||
| - | history -c && history -w | ||
| - | shutdown -P now | ||
| - | </ | ||
| ---- | ---- | ||
| Line 244: | Line 252: | ||
| shutdown -P now | shutdown -P now | ||
| </ | </ | ||
| + | |||
| + | * Create a VM Template from the powered off system. | ||
| ---- | ---- | ||
| - | ===== Add/Expand Storage ===== | + | ====== Add/Expand Storage |
| After deploying a VM from the template, you may need to expand storage on one of the partitions. | After deploying a VM from the template, you may need to expand storage on one of the partitions. | ||
| Line 268: | Line 278: | ||
| - Extend the logical volume that needs the space (/home will be used in this example) | - Extend the logical volume that needs the space (/home will be used in this example) | ||
| - **Option 1 (Preferred)**: | - **Option 1 (Preferred)**: | ||
| - | * This method is preferred because there is a performance hit when a partition spans VMDKs | + | * This method is preferred because there is a performance hit when a partition spans VMDKs< |
| - | * <code bash> | + | |
| lvextend --resizefs / | lvextend --resizefs / | ||
| - Option 2: Give the logical volume all of the space from the newly added physical volume< | - Option 2: Give the logical volume all of the space from the newly added physical volume< | ||