ctdb_traverse: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/lib/ctdb/tests/bin/ctdb_traverse - from package: ctdb-dbg

You may install the required package with command apt-get install {package}

Error in other languages:
ctdb_traverse: bevel nie gevind nie
ctdb_traverse: comandă negăsită
ctdb_traverse: comando não encontrado
ctdb_traverse: commande introuvable
ctdb_traverse: command not found
ctdb_traverse: käsku ei ole
ctdb_traverse: không tìm thấy lệnh
ctdb_traverse: komanda nerasta
ctdb_traverse: Kommando nicht gefunden.
ctdb_traverse: kommandot finns inte
ctdb_traverse: komut yok
ctdb_traverse: nie znaleziono polecenia
ctdb_traverse: níor aimsíodh an t-ordú
ctdb_traverse: no se encontró la orden
ctdb_traverse: no s'ha trobat l'ordre
ctdb_traverse: opdracht niet gevonden
ctdb_traverse: parancs nem található
ctdb_traverse: perintah tidak ditemukan
ctdb_traverse: príkaz nenájdený
ctdb_traverse: příkaz nenalezen
ctdb_traverse: команда не найдена
ctdb_traverse: командата не е открита
ctdb_traverse: 命令找不到
ctdb_traverse: コマンドが見つかりません