[SOLVED] I want check every minute with ping to u/mount folders on my system

Hi there

* i want make a « Daemon » to check every minute with « ping » command if the variables return 0 or 1

If 0 umount mount points
If 1 check if is already mounted and do nothing, if not mount then mount.

By the moment

#Monturas CIFS :
# Para permitir eliminar archivos necesitas especificar file_mode=0777,dir_mode=0777,gid=1000,uid=1000 , el (g,u)id=1000 es del usuario guest #Porteus

Geremia=$(ping -c 1 192.168.1.10 | sed -n '5p' | cut -c 24-33)
Edna=$(ping -c 1 192.168.1.11 | sed -n '5p' | cut -c 24-33)

# Parece que tendre que darle permisos usando "sudo" desde el archivo "/etc/sudoers" para des/montar
# Especificamente esas rutas.

if [ "$Geremia" == "0 received" ]; then
sudo umount /cifs/Geremia/Inukaze
sudo umount /cifs/Geremia/Inukaze-en-Familia
sudo umount /cifs/Geremia/Temporal
sudo umount /cifs/Geremia/Josmar
fi

if [ "$Geremia" == "1 received" ]; then
#Primero crear carpetas para los puntos de montaje
mkdir -p "/cifs/Geremia/Temporal"
mkdir -p "/cifs/Geremia/Inukaze"
mkdir -p "/cifs/Geremia/Inukaze-en-Familia"
mkdir -p "/cifs/Geremia/Josmar"

$(sudo mount -t cifs //192.168.1.10/Inukaze /cifs/Geremia/Inukaze -o vers=1.0,username=user,password=user,uid=1000,gid=1000,rw,nounix,iocharset=utf8,file_mode=0777,dir_mode=0777,domain=REDLOCAL) &
$(sudo mount -t cifs //192.168.1.10/Inukaze-en-Familia /cifs/Geremia/Inukaze-en-Familia -o vers=1.0,username=user,password=user,uid=1000,gid=1000,rw,nounix,iocharset=utf8,file_mode=0777,dir_mode=0777,domain=REDLOCAL) &
$(sudo mount -t cifs //192.168.1.10/Temporal /cifs/Geremia/Temporal -o vers=1.0,username=user,password=user,uid=1000,gid=1000,rw,nounix,iocharset=utf8,file_mode=0777,dir_mode=0777,domain=REDLOCAL) &
$(sudo mount -t cifs //192.168.1.10/Josmar /cifs/Geremia/Josmar -o vers=1.0,username=user,password=user,uid=1000,gid=1000,rw,nounix,iocharset=utf8,file_mode=0777,dir_mode=0777,domain=REDLOCAL) &
fi

if [ "$Edna" == "0 received" ]; then
sudo umount /cifs/Edna/SSD-Gaby
fi

if [ "$Edna" == "1 received" ]; then
#Primero crear carpetas para los puntos de montaje
#sudo mkdir -p "/cifs/Edna/SSD-Gaby"

$(sudo mount -t cifs //192.168.1.11/SSD-Gaby /cifs/Edna/SSD-Gaby -o username=user,password=user,uid=1000,gid=1000,rw,nounix,iocharset=utf8,file_mode=0777,dir_mode=0777,domain=REDLOCAL) &
fi

* How put this on rc.local, because i try to use :
watch -n 60 Geremia=$(ping -c 1 192.168.1.10 | sed -n '5p' | cut -c 24-33) &
watch -n 61 Edna=$(ping -c 1 192.168.1.11 | sed -n '5p' | cut -c 24-33) &

The second command finish the first "watch" command. but i need check that
i try with crontab -e , but is doing nothing.

i already try to put on sudoers :

inukaze Slack64 = NOPASSWD: /usr/bin/mount, /usr/bin/umount, /usr/bin/ifconfig, /usr/bin/mkdir, /bin/mkdir, /sbin/mount, /sbin/umount

but the mount and umount command just can be use by root user, and does not matter is on sudoers file mkdir -p /cifs/<some> every time ask for password.

Originally Posted by inukaze Hi there * i want make a « Daemon » to ...

You can use the daemon supervisor (included since Slackware 15.0) to run in background any program (including here even a Bash script) with the necessary support to run as a system service - i.e. a /etc/rc.d/rc.pingtomount appropriately made in Bash script, which runs/controls a daemon instance which execute your script in background.

I believe you need something like these:

Add this in rc.local:

if [ -x /etc/rc.d/rc.pingtomount ]; then
    /etc/rc.d/rc.pingtomount start
fi

I left sudo in script but dont think you need sudo when you start from rc.local the daemon but you know better... visudo:

inukaze ALL=(ALL) NOPASSWD: /bin/mount, /bin/umount

modify attachments for your needs and place them to the right place.
One attachment is the script and the other rc.pingmount for /etc/rc.d/

If the server becomes unresponsive or offline the unmount command might hang or stall which could force you to kill the unmount command. You might need to force a lazy umount i.e.

umount -f -l /cifs/Geremia/...

Your actually not checking to see if the shares are already mounted just mounting again which is a bit of a waste of time since your checking every minute. Use the mountpoint command to see if the share is mounted.

Does the samba server go offline constantly? Is this a laptop and you want to automatically connect when your on your home LAN? Using autofs might be a better choice since it will only mount when you access the share directory and automatically disconnect after at set idle time.

Originally Posted by michaelk If the server becomes unresponsive or offline the unmount command might hang or stall which could force you to kill the unmount command. You might need to force a lazy umount i.e. umount -f -l /cifs/Geremia/...

Yes, those flags -f and -l pinpoint the problem with unmounting after a server has gone down. I am not very familiar with smb/cifs mounts in Linux. I avoid them whenever possible as they lack basic posix functionality we usually take for granted in Unix/Linux. For that reason I usually prefer NFS.

But the two problems addressed with -f and -l are that fact that it it a lot easier to unmount a network drive when the server is still responding and it will be hard unmounting a drive which is being in use by some process.

Every now and then I write here about rc.autofs which enables the automounter. The automounter does not solv the problem with a server unexpectedly going down, but at least it makes sure that network drives are only mounted when needed.

regards Henrik

probably automounter would work better (see autofs). It will mount it only if needed and umount if the share is not used for a while.
Yes, nfs would be a better choice (instead of cifs).
By the way, there is a problem with the original approach. If ping fails the remote host is already down and probably you cannot successfully umount that share.

What the heck is

$(sudo mount -t cifs .....) &

???

Hi,

Maybe a while loop can replace the watch command

while [ $(date | cut -d" " -f5 | cut -d: -f3) != 00 ] ; do sleep 1 ; done && echo "run ping 1"

while [ $(date | cut -d" " -f5 | cut -d: -f3) != 30 ] ; do sleep 1 ; done && echo "run ping 2"

Duno if that will be efficient like watch, maybe you can do some trys.

For sudo you can make the script on /usr/local/bin/pingmount.sh with permissions only exec or read and exec.

-rwxr-xr-x 1 root root /usr/local/bin/pingmount.sh

and on sudoers

inukaze ALL=(ALL) NOPASSWD: /usr/local/bin/pingmount.sh

to limit the user interactions with mount.

and make a cron from inukaze ... if you run every minute you don't need the watch.

* * * * * 'sudo /usr/local/bin/pingmount.sh'

There are lot of ways, easy <--> secure <--> efficient all good. Depends on what you are looking for.

Edited: with sshfs there are options to reconnect too,like:

sshfs -o allow_other,default_permissions,reconnect,ServerAliveInterval=15,ServerAliveCountMax=3 root@192.168.1.10:/Inukaze /mnt/Geremia/Inukaze

But you need config ssh id if don't want to use passwords.

Hope that helps.

Viel.

Originally Posted by pan64 probably automounter would work better (see autofs). It will mount it only if needed and umount if the share is not used for a while. Yes, nfs would be a better choice (instead of cifs). By the way, there is a problem with the original approach. If ping fails the remote host is already down and probably you cannot successfully umount that share. What the heck is $(sudo mount -t cifs .....) & ???

nfs is very unstable, i try for six month and nfs just works for 2,4,6,8,10 minutes and after nothing response, cifs works better on domestic lan, ever works.

well i am going to see autofs manual.

I have not experienced a NFS stability problem. It appears like you have a LAN problem either wireless or wired and trying to patch it with the script or autofs is not necessarily going to fix the problem.

Originally Posted by michaelk I have not experienced a NFS stability problem. It appears like you have a LAN problem either wireless or wired and trying to patch it with the script or autofs is not necessarily going to fix the problem.

yes, I think so. But in that case nothing can help. I mean if the connection is unreliable you cannot use it that way, the mount will die sooner or later. Better to use a tool like rsync in such cases.

But return back to the original post: you can configure mount to be able to use it as user, not only as root.
The syntax $(sudo mount .... ) & is wrong.

Originally Posted by michaelk If the server becomes unresponsive or offline the unmount command might hang or stall which could force you to kill the unmount command. You might need to force a lazy umount i.e. umount -f -l /cifs/Geremia/... Your actually not checking to see if the shares are already mounted just mounting again which is a bit of a waste of time since your checking every minute. Use the mountpoint command to see if the share is mounted. Does the samba server go offline constantly? Is this a laptop and you want to automatically connect when your on your home LAN? Using autofs might be a better choice since it will only mount when you access the share directory and automatically disconnect after at set idle time.

Well by the moment i am trying the follow with autofs :

chmod a+x /etc/rc.d/rc.autofs
nano /etc/auto.master

at the end of file i add :

/- /etc/auto.mount

touch /etc/credentials
chmod 600 /etc/credentials
nano /etc/credentials

The temporal content of /etc/credentials

username=test password=t3st

nano /etc/auto.misc

# # This is an automounter map and it has the following format # key [ -mount-options-separated-by-comma ] location # Details may be found in the autofs(5) manpage #cd -fstype=iso9660,ro,nosuid,nodev :/dev/cdrom # the following entries are samples to pique your imagination #linux -ro,soft ftp.example.org:/pub/linux #boot -fstype=ext2 :/dev/hda1 #floppy -fstype=auto :/dev/fd0 #floppy -fstype=ext2 :/dev/fd0 #e2floppy -fstype=ext2 :/dev/fd0 #jaz -fstype=ext2 :/dev/sdc1 #removable -fstype=ext2 :/dev/hdd Inukaze --fstype=cifs,vers=1.0,credentials=/etc/credentials,uid=1000,gid=1000,rw,nounix,iocharset=utf8,file_mode=0777,dir_mode=0777,domain=REDLOCAL ://192.168.1.10/Inukaze Inukaze-en-Familia --fstype=cifs,vers=1.0,credentials=/etc/credentials,uid=1000,gid=1000,rw,nounix,iocharset=utf8,file_mode=0777,dir_mode=0777,domain=REDLOCAL ://192.168.1.10/Inukaze-en-Familia Temporal --fstype=cifs,vers=1.0,credentials=/etc/credentials,uid=1000,gid=1000,rw,nounix,iocharset=utf8,file_mode=0777,dir_mode=0777,domain=REDLOCAL ://192.168.1.10/Temporal Josmar --fstype=cifs,vers=1.0,credentials=/etc/credentials,uid=1000,gid=1000,rw,nounix,iocharset=utf8,file_mode=0777,dir_mode=0777,domain=REDLOCAL ://192.168.1.10/Josmar SSD-Gaby --fstype=cifs,credentials=/etc/credentials,uid=1000,gid=1000,rw,nounix,iocharset=utf8,file_mode=0777,dir_mode=0777,domain=REDLOCAL ://192.168.1.11/SSD-Gaby

automount -f -v

and well the /net and /misc folder are empty



what i am doing wrong?

Originally Posted by pan64 probably automounter would work better (see autofs). It will mount it only if needed and umount if the share is not used for a while. Yes, nfs would be a better choice (instead of cifs). By the way, there is a problem with the original approach. If ping fails the remote host is already down and probably you cannot successfully umount that share. What the heck is $(sudo mount -t cifs .....) & ???

Manual mount of cifs type filesystem

Originally Posted by viel Hi, Maybe a while loop can replace the watch command while [ $(date | cut -d" " -f5 | cut -d: -f3) != 00 ] ; do sleep 1 ; done && echo "run ping 1" while [ $(date | cut -d" " -f5 | cut -d: -f3) != 30 ] ; do sleep 1 ; done && echo "run ping 2" Duno if that will be efficient like watch, maybe you can do some trys. For sudo you can make the script on /usr/local/bin/pingmount.sh with permissions only exec or read and exec. -rwxr-xr-x 1 root root /usr/local/bin/pingmount.sh and on sudoers inukaze ALL=(ALL) NOPASSWD: /usr/local/bin/pingmount.sh to limit the user interactions with mount. and make a cron from inukaze ... if you run every minute you don't need the watch. * * * * * 'sudo /usr/local/bin/pingmount.sh' There are lot of ways, easy <--> secure <--> efficient all good. Depends on what you are looking for. Edited: with sshfs there are options to reconnect too,like: sshfs -o allow_other,default_permissions,reconnect,ServerAliveInterval=15,ServerAliveCountMax=3 root@192.168.1.10:/Inukaze /mnt/Geremia/Inukaze But you need config ssh id if don't want to use passwords. Hope that helps. Viel.

i prefer sshfs method, can you sayme in which configuration file or startup script i should put that ?

Originally Posted by rizitis I believe you need something like these: Add this in rc.local: if [ -x /etc/rc.d/rc.pingtomount ]; then /etc/rc.d/rc.pingtomount start fi I left sudo in script but dont think you need sudo when you start from rc.local the daemon but you know better... visudo: inukaze ALL=(ALL) NOPASSWD: /bin/mount, /bin/umount modify attachments for your needs and place them to the right place. One attachment is the script and the other rc.pingmount for /etc/rc.d/

The daemon is autostop after some seconds :v

sshfs is a fuse filesystem that uses the ssh/sftp subsystem. You can mount it manually, from a bash login script, autofs or even just fstab.

https://wiki.archlinux.org/title/SSHFS

You are not configuring autofs correctly. Your using different configuration files and I believe you need to use the absolute path to the share name in your auto.misc file.

/- /etc/auto.mount
versus
/etc/auto.misc

https://wiki.archlinux.org/title/autofs