scraps
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| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| scraps [2022/11/19 18:58] – millerjs | scraps [2025/03/13 13:08] (current) – millerjs | ||
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| Line 9: | Line 9: | ||
| uncomment HandPowerKey, | uncomment HandPowerKey, | ||
| + | ===== Get & Set date w/ epoch time ===== | ||
| + | |||
| + | Get from good machine: | ||
| + | |||
| + | < | ||
| + | |||
| + | |||
| + | Set on another: | ||
| + | < | ||
| ===== Image and Compress Disk ===== | ===== Image and Compress Disk ===== | ||
| < | < | ||
| Line 15: | Line 24: | ||
| (-s500G refers to the image size, for estimates) | (-s500G refers to the image size, for estimates) | ||
| + | Mount the whole disk image: (have to un-lz4 first ofc) | ||
| + | |||
| + | < | ||
| + | kpartx -a -v myimage.disk | ||
| + | |||
| + | mount / | ||
| + | </ | ||
| + | |||
| + | Then, to unmount: | ||
| + | |||
| + | < | ||
| + | umount / | ||
| + | |||
| + | kpartx -d -v myimage.disk | ||
| + | </ | ||
| ===== ntplogtemp ===== | ===== ntplogtemp ===== | ||
| Line 27: | Line 51: | ||
| </ | </ | ||
| - | ===== Quick Pi ID ===== | + | ===== cycle systemd logs ===== |
| + | < | ||
| + | |||
| + | ==== show systemd logs from boot ==== | ||
| + | < | ||
| + | |||
| + | ===== Raspberry Pi ===== | ||
| + | ==== Quick Pi ID ==== | ||
| Easy way to get a quick visual indicator to ID a Pi you're remoted into: | Easy way to get a quick visual indicator to ID a Pi you're remoted into: | ||
| Line 45: | Line 76: | ||
| </ | </ | ||
| - | ===== Raspberry Pi Heartbeat ===== | + | ==== Heartbeat |
| set in config.txt | set in config.txt | ||
| Line 54: | Line 84: | ||
| </ | </ | ||
| + | ==== Grow partition on first boot ==== | ||
| + | Add to the end of / | ||
| + | |||
| + | < | ||
| + | quiet init=/ | ||
| + | </ | ||
| ===== chronyc tracking ===== | ===== chronyc tracking ===== | ||
| Line 137: | Line 173: | ||
| </ | </ | ||
| + | ===== Build LinuxPTP on Alpine ===== | ||
| + | Enable community repository | ||
| + | install deps | ||
| + | < | ||
| + | |||
| + | < | ||
| + | |||
| + | < | ||
| + | |||
| + | ===== Cycle Chrony Logs ===== | ||
| + | < | ||
| + | #!/bin/bash | ||
| + | # chrony log rotation | ||
| + | |||
| + | cd / | ||
| + | |||
| + | mv measurements.log measurements.$(date +" | ||
| + | mv statistics.log statistics.$(date +" | ||
| + | mv tracking.log tracking.$(date +" | ||
| + | |||
| + | sync | ||
| + | |||
| + | chronyc cyclelogs | ||
| + | </ | ||
| + | |||
| + | ===== chrony.conf ptp as pps refclock ===== | ||
| + | < | ||
| + | server time-a.nist.gov | ||
| + | server time-a-wwv.nist.gov | ||
| + | |||
| + | refclock SHM 0 poll 3 refid GPS | ||
| + | refclock PHC / | ||
| + | |||
| + | logdir / | ||
| + | log statistics tracking measurements | ||
| + | |||
| + | driftfile / | ||
| + | |||
| + | dumpdir / | ||
| + | |||
| + | rtcsync | ||
| + | |||
| + | allow | ||
| + | cmdallow | ||
| + | </ | ||
| + | |||
| + | ===== Set NIC to promiscuous mode at boot ===== | ||
| + | Using systemd: | ||
| + | |||
| + | `/ | ||
| + | |||
| + | < | ||
| + | [Unit] | ||
| + | Description=Control promiscuous mode for interface eth0 | ||
| + | After=network.target | ||
| + | |||
| + | [Service] | ||
| + | Type=oneshot | ||
| + | ExecStart=/ | ||
| + | ExecStop=/ | ||
| + | RemainAfterExit=yes | ||
| + | |||
| + | [Install] | ||
| + | WantedBy=multi-user.target | ||
| + | </ | ||
| + | |||
| + | ===== Proxmox ===== | ||
| + | ==== re-number VM ==== | ||
| + | |||
| + | 1) shut down VM | ||
| + | 2) rename the storage | ||
| + | < | ||
| + | 3) rename the configuration file | ||
| + | < | ||
| + | export vgNAME=vg-images newVMID=173 oldVMID=175 ; \ | ||
| + | sed -i " | ||
| + | unset vgNAME newVMID oldVMID; | ||
| + | </ | ||
scraps.1668884333.txt.gz · Last modified: 2024/11/14 02:30 (external edit)