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1 # == Define: elasticsearch::service::init |
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2 # |
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3 # This class exists to coordinate all service management related actions, |
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4 # functionality and logical units in a central place. |
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5 # |
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6 # <b>Note:</b> "service" is the Puppet term and type for background processes |
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7 # in general and is used in a platform-independent way. E.g. "service" means |
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8 # "daemon" in relation to Unix-like systems. |
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9 # |
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10 # |
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11 # === Parameters |
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12 # |
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13 # [*ensure*] |
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14 # String. Controls if the managed resources shall be <tt>present</tt> or |
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15 # <tt>absent</tt>. If set to <tt>absent</tt>: |
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16 # * The managed software packages are being uninstalled. |
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17 # * Any traces of the packages will be purged as good as possible. This may |
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18 # include existing configuration files. The exact behavior is provider |
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19 # dependent. Q.v.: |
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20 # * Puppet type reference: {package, "purgeable"}[http://j.mp/xbxmNP] |
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21 # * {Puppet's package provider source code}[http://j.mp/wtVCaL] |
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22 # * System modifications (if any) will be reverted as good as possible |
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23 # (e.g. removal of created users, services, changed log settings, ...). |
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24 # * This is thus destructive and should be used with care. |
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25 # Defaults to <tt>present</tt>. |
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26 # |
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27 # [*status*] |
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28 # String to define the status of the service. Possible values: |
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29 # * <tt>enabled</tt>: Service is running and will be started at boot time. |
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30 # * <tt>disabled</tt>: Service is stopped and will not be started at boot |
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31 # time. |
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32 # * <tt>running</tt>: Service is running but will not be started at boot time. |
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33 # You can use this to start a service on the first Puppet run instead of |
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34 # the system startup. |
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35 # * <tt>unmanaged</tt>: Service will not be started at boot time and Puppet |
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36 # does not care whether the service is running or not. For example, this may |
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37 # be useful if a cluster management software is used to decide when to start |
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38 # the service plus assuring it is running on the desired node. |
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39 # Defaults to <tt>enabled</tt>. The singular form ("service") is used for the |
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40 # sake of convenience. Of course, the defined status affects all services if |
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41 # more than one is managed (see <tt>service.pp</tt> to check if this is the |
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42 # case). |
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43 # |
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44 # [*init_defaults*] |
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45 # Defaults file content in hash representation |
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46 # |
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47 # [*init_defaults_file*] |
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48 # Defaults file as puppet resource |
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49 # |
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50 # [*init_template*] |
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51 # Service file as a template |
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52 # |
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53 # === Authors |
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54 # |
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55 # * Richard Pijnenburg <mailto:richard.pijnenburg@elasticsearch.com> |
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56 # |
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57 define elasticsearch::service::init( |
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58 $ensure = $elasticsearch::ensure, |
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59 $status = $elasticsearch::status, |
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60 $init_defaults_file = undef, |
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61 $init_defaults = undef, |
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62 $init_template = undef, |
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63 ) { |
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64 |
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65 #### Service management |
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66 |
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67 # set params: in operation |
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68 if $ensure == 'present' { |
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69 |
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70 case $status { |
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71 # make sure service is currently running, start it on boot |
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72 'enabled': { |
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73 $service_ensure = 'running' |
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74 $service_enable = true |
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75 } |
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76 # make sure service is currently stopped, do not start it on boot |
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77 'disabled': { |
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78 $service_ensure = 'stopped' |
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79 $service_enable = false |
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80 } |
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81 # make sure service is currently running, do not start it on boot |
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82 'running': { |
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83 $service_ensure = 'running' |
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84 $service_enable = false |
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85 } |
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86 # do not start service on boot, do not care whether currently running |
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87 # or not |
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88 'unmanaged': { |
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89 $service_ensure = undef |
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90 $service_enable = false |
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91 } |
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92 # unknown status |
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93 # note: don't forget to update the parameter check in init.pp if you |
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94 # add a new or change an existing status. |
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95 default: { |
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96 fail("\"${status}\" is an unknown service status value") |
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97 } |
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98 } |
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99 |
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100 # set params: removal |
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101 } else { |
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102 |
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103 # make sure the service is stopped and disabled (the removal itself will be |
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104 # done by package.pp) |
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105 $service_ensure = 'stopped' |
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106 $service_enable = false |
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107 |
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108 } |
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109 |
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110 $notify_service = $elasticsearch::restart_on_change ? { |
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111 true => Service["elasticsearch-instance-${name}"], |
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112 false => undef, |
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113 } |
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114 |
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115 |
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116 if ( $status != 'unmanaged' and $ensure == 'present' ) { |
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117 |
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118 # defaults file content. Either from a hash or file |
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119 if ($init_defaults_file != undef) { |
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120 file { "${elasticsearch::params::defaults_location}/elasticsearch-${name}": |
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121 ensure => $ensure, |
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122 source => $init_defaults_file, |
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123 owner => 'root', |
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124 group => 'root', |
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125 mode => '0644', |
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126 before => Service["elasticsearch-instance-${name}"], |
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127 notify => $notify_service, |
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128 } |
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129 |
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130 } elsif ($init_defaults != undef and is_hash($init_defaults) ) { |
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131 |
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132 if(has_key($init_defaults, 'ES_USER')) { |
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133 if($init_defaults['ES_USER'] != $elasticsearch::elasticsearch_user) { |
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134 fail('Found ES_USER setting for init_defaults but is not same as elasticsearch_user setting. Please use elasticsearch_user setting.') |
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135 } |
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136 } |
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137 |
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138 $init_defaults_pre_hash = { 'ES_USER' => $elasticsearch::elasticsearch_user, 'ES_GROUP' => $elasticsearch::elasticsearch_group, 'MAX_OPEN_FILES' => '65535' } |
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139 $new_init_defaults = merge($init_defaults_pre_hash, $init_defaults) |
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140 |
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141 augeas { "defaults_${name}": |
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142 incl => "${elasticsearch::params::defaults_location}/elasticsearch-${name}", |
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143 lens => 'Shellvars.lns', |
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144 changes => template("${module_name}/etc/sysconfig/defaults.erb"), |
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145 before => Service["elasticsearch-instance-${name}"], |
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146 notify => $notify_service, |
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147 } |
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148 |
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149 } |
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150 |
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151 # init file from template |
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152 if ($init_template != undef) { |
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153 |
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154 file { "/etc/init.d/elasticsearch-${name}": |
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155 ensure => $ensure, |
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156 content => template($init_template), |
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157 owner => 'root', |
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158 group => 'root', |
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159 mode => '0755', |
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160 before => Service["elasticsearch-instance-${name}"], |
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161 notify => $notify_service, |
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162 } |
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163 |
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164 } |
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165 |
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166 } elsif ($status != 'unmanaged') { |
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167 |
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168 file { "/etc/init.d/elasticsearch-${name}": |
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169 ensure => 'absent', |
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170 subscribe => Service["elasticsearch-instance-${name}"], |
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171 } |
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172 |
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173 file { "${elasticsearch::params::defaults_location}/elasticsearch-${name}": |
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174 ensure => 'absent', |
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175 subscribe => Service["elasticsearch-${$name}"], |
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176 } |
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177 |
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178 } |
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179 |
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180 |
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181 if ( $status != 'unmanaged') { |
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182 |
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183 # action |
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184 service { "elasticsearch-instance-${name}": |
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185 ensure => $service_ensure, |
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186 enable => $service_enable, |
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187 name => "elasticsearch-${name}", |
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188 hasstatus => $elasticsearch::params::service_hasstatus, |
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189 hasrestart => $elasticsearch::params::service_hasrestart, |
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190 pattern => $elasticsearch::params::service_pattern, |
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191 } |
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192 |
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193 } |
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194 |
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195 } |