Notes cluster shell parallèle

• clustershell (clush)
• clusterssh (cssh)
• mussh

apt-get install clustershell
# ou 
pip install --user ClusterShell

/etc/clustershell/groups

all: host1 host2

-a pour “all”
-B pour affichage groupé de STDOUT et STDERR si retour identique

clush -a -B

clush -w lame[1-4] -B

clush -w lame[1-6] --diff dmidecode -s bios-version

--- lame[1-4] (4)
+++ lame[5-6] (2)
@@ -1 +1 @@
-I36
+I15

Exemple SosRepport

Génération du sosreport sur les cibles

clush -B -O ssh_options='-oStrictHostKeyChecking=no -oPort=2222' -l root --hostfile targets.lst 
sosreport -q --case-id 000000 --since 20230813000000 --batch

Récupération des sosreports

mkdir sosreports
clush -B -O ssh_options='-oStrictHostKeyChecking=no -oPort=2222' -l root --hostfile targets.lst --rcopy '/var/tmp/sosreport-*.tar.xz' --dest sosreports/
clush -B -O ssh_options='-oStrictHostKeyChecking=no -oPort=2222' -l root --hostfile targets.lst --rcopy '/var/tmp/sosreport-*.tar.xz.sha256' --dest sosreports/

Renommage

cd sosreports/
# rename -nv '*' '' *
rename '*' '' *
rename '-' '' *

Nettoyage

clush -B -O ssh_options='-oStrictHostKeyChecking=no -oPort=2222' -l root --hostfile targets.lst
rm -f /var/tmp/sosrepor*

clush -B --hostfile=hosts.lst

clush -B -O ssh_options='-oStrictHostKeyChecking=no -oPort=2222' -l admin --hostfile hosts.lst

mkdir ~/.config/clustershell/
cp /etc/clustershell/groups.conf ~/.config/clustershell/

~/.config/clustershell/groups.d/plop.yaml

plop:
    www: 'www[1-4]'
    db: 'db-alpha,db-beta'

clush -B -g plop:www
clush -B -g plop:*

mussh -H list.txt -b -c 'uptime'

mussh -H list.txt -b -C script.sh

mussh -m 7 -H ~/dev/list.txt -b -c 'apt-get -s dist-upgrade | grep "^[[:digit:]]\+ upgraded"'

sudo apt-get install clusterssh

cssh c2-bl1 c2-bl2 c2-bl3 c2-bl4 c2-bl5 c2-bl6

read SSHPASS
export SSHPASS
 
for ip in $(cat ip_all.lst) ; do sshpass -e ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o ConnectTimeout=10 $ip /bin/true && echo $ip >> ip_ok.lst || echo $ip >> ip_nok.lst ;done
 
for ip in $(cat ip_ok.lst) ; do sshpass -e ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o ConnectTimeout=10 $ip grep 192.168.1.253 /etc/resolv.conf && echo $ip >> dns_ok.lst || echo $ip >> dns_nok.lst ;done