TMP tricks
For STORM servers only!!!!
To increase the /tmp directory size on a storm server just change the 'my $tmpdsksize' in the /scripts/securetmp (file size is in Kilobytes. Use the Byte Converter - File Size Calculator to convert your desired directory size into Kilobytes) and run:
screen -S ResizeTmp /usr/local/cpanel/etc/init/stoptailwatchd /etc/init.d/mysql stop umount -l /var/tmp umount -l /tmp rm -f /usr/tmpDSK /scripts/securetmp --auto /etc/init.d/mysql start /usr/local/cpanel/etc/init/starttailwatchd
this might take a while. Do a df -h afterwards to verify that this worked.
(07:43:29 AM) Dan Wells: I have a fun one for you (07:43:42 AM) Dan Wells: how to resize /tmp on a server that is using /securetmp (07:44:01 AM) Mike: like your gonna show me how? (07:44:08 AM) Mike: or you have one right now? (07:44:18 AM) Dan Wells: on some servers you will see them remount /tmp on something like /usr/tmpDSK (07:44:25 AM) Dan Wells: this is common on our storm servers (07:44:29 AM) Mike: ok (07:44:40 AM) Mike: explain in great detail please (07:45:04 AM) Dan Wells: because of the way it only sets up a '/' partition, it mounts /tmp on a file-based loop filesystem (07:45:08 AM) Dan Wells: got a storm server handy? (07:45:18 AM) Mike: hrmmmmmm..... (07:45:20 AM) Mike: one sec (07:45:57 AM) Dan Wells: anyways I had a customer who needed more space for /tmp (07:46:10 AM) Dan Wells: normally its not possible to resize it because its actually a disk partition (07:46:21 AM) Dan Wells: but when they are mounting a file like that, you can (07:46:47 AM) Mike: https://billing.int.liquidweb.com/mysql/content/admin/account/?accnt=185323 (07:47:03 AM) Mike: he said i can check on these when ever (07:47:06 AM) Mike: i needed to (07:47:14 AM) Mike: or i can make one whenever (07:47:38 AM) Dan Wells: ok, se ehow its remounting /tmp as a flat file? (07:47:52 AM) Dan Wells: tmpDSK ? (07:48:21 AM) Mike: [root@cpanelclone.ngamber.ca] ~ >> df -l Filesystem 1K-blocks Used Available Use% Mounted on /dev/xvda3 152783008 8357432 136664576 6% / /dev/xvda1 101086 26298 69569 28% /boot tmpfs 879040 0 879040 0% /dev/shm /usr/tmpDSK 495844 10639 459605 3% /tmp (07:48:25 AM) Mike: yeah (07:48:28 AM) Mike: i see it there (07:48:29 AM) Dan Wells: make the new file: dd if=/dev/zero of=/usr/tmpDSK2 bs=4096 count=(new size in number of 4k blocks) format it: mkfs.ext3 /usr/tmpDSK2 (07:48:57 AM) Dan Wells: mkdir /tmp2 rsync -av /tmp /tmp2 (07:49:03 AM) Dan Wells: er wait (07:49:05 AM) Dan Wells: skipped a step (07:49:24 AM) Dan Wells: mkdir /tmp2 mount -o loop /usr/tmpDSK2 /tmp2 rsync -av /tmp /tmp2 (07:49:56 AM) Dan Wells: then umount /tmp2 , shut down services until it well let you umount /tmp move tmpDSK to tmpDSK.old and and tmpDSK2 to tmpDSK and reboot (07:51:10 AM) Mike: ok do you know what service those would be mainly? (07:51:19 AM) Dan Wells: pretty much everything (07:51:20 AM) Mike: i assume httpd, mysql (07:51:27 AM) Dan Wells: mysql, apache, courier, (07:51:29 AM) Dan Wells: lsof | grep /tmp (07:51:31 AM) Mike: cpanel (07:51:34 AM) Dan Wells: that too (07:51:47 AM) Dan Wells: it may be simpler to just update /etc/fstab and reboot (07:51:57 AM) Mike: basicaly tell the cutomer that we have to reboot it? (07:52:13 AM) Mike: alot simpler (07:52:19 AM) Mike: ok one more question (07:52:27 AM) Mike: dd if=/dev/zero of=/usr/tmpDSK2 bs=4096 count=(new size in number of 4k blocks) (07:52:34 AM) Mike: i dont understand that to well (07:52:44 AM) Mike: dd if=/dev/zero of=/usr/tmpDSK2 bs=4096 count=20 (07:53:07 AM) Mike: that would make 20*4096b right? (07:53:37 AM) Dan Wells: yes (07:53:41 AM) Dan Wells: thats only 80k though (07:53:49 AM) Mike: so it would make a file that is 4kb * 20? (07:53:54 AM) Mike: lol (07:54:10 AM) Dan Wells: its in bytes, yes (07:54:23 AM) Mike: so i will have to use math to figure this all out then lol (07:54:28 AM) Dan Wells: thats also how you can make a file of arbitrary length too (07:54:44 AM) Dan Wells: technically theres no reason you can set bs=1 and do it in one byes multiples (07:55:06 AM) Dan Wells: but that will cause a lot of disk load while it runs and more likely to create it non-sequential (07:55:08 AM) Mike: would use alot more inodes that way wouldnt it (07:55:08 AM) Mike: ? (07:55:14 AM) Dan Wells: 4096 is usual actual disk-block size (07:55:27 AM) Dan Wells: so asking for a disk block of that size will write it to disk and fill a block (07:56:20 AM) Mike: ok i am gonna paste this into a wiki so i can edit it later lol