~allenap/maas/neighbours-service-live

# -*- mode: shell-script -*-

#

# Control a system via ipmipower

#

 

# Parameters.

# If power_change is 'query', echo the current state of the

# machine: 'on' or 'off'.

power_change={{power_change}}

power_address={{power_address}}

power_user={{power_user}}

power_pass={{power_pass}}

power_driver={{power_driver}}

power_off_mode={{power_off_mode}}

ipmipower={{ipmipower}}

ipmi_chassis_config={{ipmi_chassis_config}}

config={{config_dir}}/{{ipmi_config}}

 

# If ip_address was supplied and power_address is not explicitly set then

# use ip_address because it gets discovered on-the-fly based on mac_address.

# We don't want to use it unilaterally because mac_address may be the host's

# MAC, so only fall back if someone deliberately left power_address empty.

{{if ip_address and not power_address}}

power_address={{ip_address}}

{{endif}}

 

# This workaround is required on many BMCs, and should have no impact

# on BMCs that don't require it.

# See https://bugs.launchpad.net/maas/+bug/1287964

workarounds="-W opensesspriv"

 

# Determines the power command needed to execute the desired

# action. This function receives ${power_change} as argument.

formulate_power_command() {

    case $1 in

    'on') echo '--cycle --on-if-off' ;;

    'off')

        if [ "$power_off_mode" = "soft" ];

        then

            echo '--soft'

        else

            echo '--off'

        fi ;;

    'query') echo '--stat' ;;

    *)

        echo "Got unknown power state from ipmipower: '$1'" >&2

        exit 1

    esac

}

 

# Issue command to ipmipower, for the given system.

issue_ipmi_command() {

    # See https://launchpad.net/bugs/1053391 for details of this workaround

    local driver_option="" user_option=""

    if [ -n "$power_driver" ]

        then

          driver_option="--driver-type=${power_driver}"

    fi

    if [ -n "$power_user" ]

        then

          user_option="-u ${power_user}"

    fi

 

    if [ "$power_change" != "query" ]

    then

        # Use C locale to force English error messages.

        result=$(echo workaround |\

        LC_ALL=C ${ipmi_chassis_config} ${workarounds} ${driver_option} -h ${power_address} ${user_option} -p ${power_pass} --commit --filename ${config} 2>&1)

 

        if echo $result | grep -q "password invalid"

        then

            echo "Invalid password" >&2

            exit 2

        fi

    fi

 

    # Use C locale to force English error messages.

    result=$(echo workaround |\

    LC_ALL=C ${ipmipower} ${workarounds} ${driver_option} -h ${power_address} ${user_option} -p ${power_pass} "$@")

 

    if echo $result | grep -q "password invalid"

    then

        echo "Invalid password" >&2

        exit 2

    fi

 

    case "$result" in

        *:* )

                # Result looks like the usual IPMI output:

                # <ipmi-ip-address>: <on/off>, just return the <on|off>

                # part.

                echo ${result} | cut -d ':' -f 2

                ;;

        * )

                echo ${result};;

    esac

}

 

# This script deliberately does not check the current power state

# before issuing the requested power command. See bug 1171418 for an

# explanation.

power_command=$(formulate_power_command ${power_change})

issue_ipmi_command ${power_command}