| | 1 | [[PageOutline]] |
| | 2 | |
| | 3 | = munin plugin = |
| | 4 | * github:vajtsz/munin-plugins |
| | 5 | |
| | 6 | == lxc_proc == |
| | 7 | * github:vajtsz/munin-plugins/blob/6a426b4bde7addcaf42d72a033e713d0f11776c0/squeeze/lxc_proc#L77 |
| | 8 | * Debian Squeezeと異なり、Ubuntu 12.04では{{{lxc-cgroup -t container_name tasks}}}が使えない |
| | 9 | |
| | 10 | * https://www.kernel.org/doc/Documentation/cgroups/cgroups.txt |
| | 11 | > Each cgroup is represented by a directory in the cgroup file system |
| | 12 | > containing the following files describing that cgroup: |
| | 13 | > |
| | 14 | > - tasks: list of tasks (by pid) attached to that cgroup. This list |
| | 15 | > is not guaranteed to be sorted. Writing a thread id into this file |
| | 16 | > moves the thread into this cgroup. |
| | 17 | > - cgroup.procs: list of tgids in the cgroup. This list is not |
| | 18 | > guaranteed to be sorted or free of duplicate tgids, and userspace |
| | 19 | > should sort/uniquify the list if this property is required. |
| | 20 | > Writing a thread group id into this file moves all threads in that |
| | 21 | > group into this cgroup. |
| | 22 | > - notify_on_release flag: run the release agent on exit? |
| | 23 | > - release_agent: the path to use for release notifications (this file |
| | 24 | > exists in the top cgroup only) |
| | 25 | |
| | 26 | * まとめ |
| | 27 | * lxc-cgroupコマンドを使わない場合、以下のsysfsにアクセスすると良い模様 |
| | 28 | * Debian 6.0: {{{/sys/fs/cgroup/<container>/tasks}}} |
| | 29 | * Ubuntu 12.04 with fstab: {{{/sys/fs/cgroup/lxc/<container>/tasks}}} |
| | 30 | * Ubuntu 12.04 with cgroup-lite: {{{/sys/fs/cgroup/cpuacct/lxc/<container>/tasks}}} |
| | 31 | * Ubuntu 12.04 with cgroup-bin: {{{/sys/fs/cgroup/cpuacct/sysdefault/lxc/<container>/tasks}}} |
| | 32 | |
| | 33 | === Debian 6.0 === |
| | 34 | * http://wiki.debian.org/LXC |
| | 35 | > Add this line to /etc/fstab |
| | 36 | > {{{ |
| | 37 | > cgroup /sys/fs/cgroup cgroup defaults 0 0 |
| | 38 | > }}} |
| | 39 | > Try to mount it (a reboot solves an eventual "resource busy problem" in any case) |
| | 40 | > {{{ |
| | 41 | > mount /sys/fs/cgroup |
| | 42 | > }}} |
| | 43 | |
| | 44 | * $ sudo lxc-start -d -n lxc-test |
| | 45 | * $ sudo lxc-cgroup -n lxc-test tasks |
| | 46 | {{{ |
| | 47 | 1432 |
| | 48 | 1569 |
| | 49 | 1571 |
| | 50 | 1598 |
| | 51 | }}} |
| | 52 | |
| | 53 | * $ ls -1F /sys/fs/cgroup/ |
| | 54 | {{{ |
| | 55 | cgroup.procs |
| | 56 | cpuacct.stat |
| | 57 | cpuacct.usage |
| | 58 | cpuacct.usage_percpu |
| | 59 | cpuset.cpu_exclusive |
| | 60 | cpuset.cpus |
| | 61 | cpuset.mem_exclusive |
| | 62 | cpuset.mem_hardwall |
| | 63 | cpuset.memory_migrate |
| | 64 | cpuset.memory_pressure |
| | 65 | cpuset.memory_pressure_enabled |
| | 66 | cpuset.memory_spread_page |
| | 67 | cpuset.memory_spread_slab |
| | 68 | cpuset.mems |
| | 69 | cpuset.sched_load_balance |
| | 70 | cpuset.sched_relax_domain_level |
| | 71 | cpu.shares |
| | 72 | devices.allow |
| | 73 | devices.deny |
| | 74 | devices.list |
| | 75 | lxc-test/ |
| | 76 | net_cls.classid |
| | 77 | notify_on_release |
| | 78 | release_agent |
| | 79 | tasks |
| | 80 | }}} |
| | 81 | * /sys/fs/cgroup/lxc-test/ も同じ構造 |
| | 82 | * $ cat /sys/fs/cgroup/lxc-test/tasks |
| | 83 | {{{ |
| | 84 | 1432 |
| | 85 | 1569 |
| | 86 | 1571 |
| | 87 | 1598 |
| | 88 | }}} |
| | 89 | |
| | 90 | === Ubuntu 12.04 === |
| | 91 | * Ubuntu 12.04 with {{{aptitude install -R lxc}}} |
| | 92 | * cgroup関係のパッケージは{{{-R}}}をつけるとインストールされない |
| | 93 | * $ ls -1F /sys/fs/cgroup/ |
| | 94 | * N/A |
| | 95 | * $ sudo lxc-start -n lxc-test |
| | 96 | {{{ |
| | 97 | lxc-start: failed to spawn 'lxc-test' |
| | 98 | }}} |
| | 99 | |
| | 100 | ==== /etc/fstab ==== |
| | 101 | * Ubuntu 12.04 with /etc/fstab:{{{cgroup /sys/fs/cgroup cgroup defaults 0 0}}} |
| | 102 | * 起動時に自動でマウントされないため、{{{mount -a}}}する必要がある |
| | 103 | |
| | 104 | * $ sudo mount -a |
| | 105 | * $ sudo lxc-start -d -n lxc-test |
| | 106 | * $ sudo lxc-cgroup -n lxc-test tasks |
| | 107 | {{{ |
| | 108 | lxc-cgroup: cgroup is not mounted |
| | 109 | lxc-cgroup: failed to retrieve value of 'tasks' for 'lxc-test' |
| | 110 | }}} |
| | 111 | |
| | 112 | * $ ls -1F /sys/fs/cgroup/ |
| | 113 | {{{ |
| | 114 | blkio.io_merged |
| | 115 | blkio.io_queued |
| | 116 | blkio.io_service_bytes |
| | 117 | blkio.io_serviced |
| | 118 | blkio.io_service_time |
| | 119 | blkio.io_wait_time |
| | 120 | blkio.reset_stats |
| | 121 | blkio.sectors |
| | 122 | blkio.throttle.io_service_bytes |
| | 123 | blkio.throttle.io_serviced |
| | 124 | blkio.throttle.read_bps_device |
| | 125 | blkio.throttle.read_iops_device |
| | 126 | blkio.throttle.write_bps_device |
| | 127 | blkio.throttle.write_iops_device |
| | 128 | mitty@lein:~$ ls -1F /sys/fs/cgroup/ |
| | 129 | blkio.io_merged |
| | 130 | blkio.io_queued |
| | 131 | blkio.io_service_bytes |
| | 132 | blkio.io_serviced |
| | 133 | blkio.io_service_time |
| | 134 | blkio.io_wait_time |
| | 135 | blkio.reset_stats |
| | 136 | blkio.sectors |
| | 137 | blkio.throttle.io_service_bytes |
| | 138 | blkio.throttle.io_serviced |
| | 139 | blkio.throttle.read_bps_device |
| | 140 | blkio.throttle.read_iops_device |
| | 141 | blkio.throttle.write_bps_device |
| | 142 | blkio.throttle.write_iops_device |
| | 143 | blkio.time |
| | 144 | blkio.weight |
| | 145 | blkio.weight_device |
| | 146 | cgroup.clone_children |
| | 147 | cgroup.event_control |
| | 148 | cgroup.procs |
| | 149 | cpuacct.stat |
| | 150 | cpuacct.usage |
| | 151 | cpuacct.usage_percpu |
| | 152 | cpu.cfs_period_us |
| | 153 | cpu.cfs_quota_us |
| | 154 | cpu.rt_period_us |
| | 155 | cpu.rt_runtime_us |
| | 156 | cpuset.cpu_exclusive |
| | 157 | cpuset.cpus |
| | 158 | cpuset.mem_exclusive |
| | 159 | cpuset.mem_hardwall |
| | 160 | cpuset.memory_migrate |
| | 161 | cpuset.memory_pressure |
| | 162 | cpuset.memory_pressure_enabled |
| | 163 | cpuset.memory_spread_page |
| | 164 | cpuset.memory_spread_slab |
| | 165 | cpuset.mems |
| | 166 | cpuset.sched_load_balance |
| | 167 | cpuset.sched_relax_domain_level |
| | 168 | cpu.shares |
| | 169 | cpu.stat |
| | 170 | devices.allow |
| | 171 | devices.deny |
| | 172 | devices.list |
| | 173 | lxc/ |
| | 174 | memory.failcnt |
| | 175 | memory.force_empty |
| | 176 | memory.limit_in_bytes |
| | 177 | memory.max_usage_in_bytes |
| | 178 | memory.memsw.failcnt |
| | 179 | memory.memsw.limit_in_bytes |
| | 180 | memory.memsw.max_usage_in_bytes |
| | 181 | memory.memsw.usage_in_bytes |
| | 182 | memory.move_charge_at_immigrate |
| | 183 | memory.numa_stat |
| | 184 | memory.oom_control |
| | 185 | memory.soft_limit_in_bytes |
| | 186 | memory.stat |
| | 187 | memory.swappiness |
| | 188 | memory.usage_in_bytes |
| | 189 | memory.use_hierarchy |
| | 190 | notify_on_release |
| | 191 | release_agent |
| | 192 | tasks |
| | 193 | }}} |
| | 194 | * /sys/fs/cgroup/lxc/, /sys/fs/cgroup/lxc/lxc-test/ も同じ構造 |
| | 195 | * $ cat /sys/fs/cgroup/lxc/lxc-test/tasks |
| | 196 | {{{ |
| | 197 | 2712 |
| | 198 | 2867 |
| | 199 | 2932 |
| | 200 | 2943 |
| | 201 | 2947 |
| | 202 | 2952 |
| | 203 | 2953 |
| | 204 | 2954 |
| | 205 | 2983 |
| | 206 | 3002 |
| | 207 | 3031 |
| | 208 | 3036 |
| | 209 | 3037 |
| | 210 | 3042 |
| | 211 | 3056 |
| | 212 | 3058 |
| | 213 | }}} |
| | 214 | |
| | 215 | ==== cgroup-lite ==== |
| | 216 | * Ubuntu 12.04 with {{{cgroup-lite}}} |
| | 217 | * aptitude install時に-Rとしない場合、{{{cgroup-lite}}}がRecommendsからインストールされる |
| | 218 | * /bin/cgroups-mount |
| | 219 | {{{ |
| | 220 | mount -t tmpfs -o uid=0,gid=0,mode=0755 cgroup /sys/fs/cgroup |
| | 221 | }}} |
| | 222 | * $ sudo lxc-cgroup -n lxc-test tasks |
| | 223 | {{{ |
| | 224 | lxc-cgroup: cgroup is not mounted |
| | 225 | lxc-cgroup: failed to retrieve value of 'tasks' for 'lxc-test' |
| | 226 | }}} |
| | 227 | |
| | 228 | * $ ls -1F /sys/fs/cgroup/ |
| | 229 | {{{ |
| | 230 | blkio/ |
| | 231 | cpu/ |
| | 232 | cpuacct/ |
| | 233 | cpuset/ |
| | 234 | devices/ |
| | 235 | freezer/ |
| | 236 | memory/ |
| | 237 | perf_event/ |
| | 238 | }}} |
| | 239 | * $ find /sys/fs/cgroup/ | grep lxc-test/tasks | xargs wc |
| | 240 | {{{ |
| | 241 | 17 17 102 /sys/fs/cgroup/perf_event/lxc/lxc-test/tasks |
| | 242 | 17 17 102 /sys/fs/cgroup/blkio/lxc/lxc-test/tasks |
| | 243 | 17 17 102 /sys/fs/cgroup/freezer/lxc/lxc-test/tasks |
| | 244 | 17 17 102 /sys/fs/cgroup/devices/lxc/lxc-test/tasks |
| | 245 | 17 17 102 /sys/fs/cgroup/memory/lxc/lxc-test/tasks |
| | 246 | 17 17 102 /sys/fs/cgroup/cpuacct/lxc/lxc-test/tasks |
| | 247 | 17 17 102 /sys/fs/cgroup/cpu/lxc/lxc-test/tasks |
| | 248 | 17 17 102 /sys/fs/cgroup/cpuset/lxc/lxc-test/tasks |
| | 249 | }}} |
| | 250 | * $ cat /sys/fs/cgroup/perf_event/lxc/lxc-test/tasks |
| | 251 | {{{ |
| | 252 | 17390 |
| | 253 | 17539 |
| | 254 | 17556 |
| | 255 | 17560 |
| | 256 | 17562 |
| | 257 | 17567 |
| | 258 | 17568 |
| | 259 | 17570 |
| | 260 | 17599 |
| | 261 | 17621 |
| | 262 | 17647 |
| | 263 | 17651 |
| | 264 | 17654 |
| | 265 | 17659 |
| | 266 | 17678 |
| | 267 | 17681 |
| | 268 | 17829 |
| | 269 | }}} |
| | 270 | |
| | 271 | ==== cgroup-bin ==== |
| | 272 | * Ubuntu 12.04 with {{{cgroup-bin}}} |
| | 273 | * cgroup-binとcgroup-liteはコンフリクトする |
| | 274 | * /etc/init/cgconfig.conf |
| | 275 | {{{ |
| | 276 | mount -t tmpfs -o uid=0,gid=0,mode=0755 cgroups /sys/fs/cgroup |
| | 277 | }}} |
| | 278 | * $ sudo lxc-cgroup -n lxc-test tasks |
| | 279 | {{{ |
| | 280 | lxc-cgroup: cgroup is not mounted |
| | 281 | lxc-cgroup: failed to retrieve value of 'tasks' for 'lxc-test' |
| | 282 | }}} |
| | 283 | |
| | 284 | * $ ls -1F /sys/fs/cgroup/ |
| | 285 | {{{ |
| | 286 | cpu/ |
| | 287 | cpuacct/ |
| | 288 | devices/ |
| | 289 | freezer/ |
| | 290 | memory/ |
| | 291 | }}} |
| | 292 | * $ find /sys/fs/cgroup/ | grep lxc-test/tasks | xargs wc |
| | 293 | {{{ |
| | 294 | 16 16 80 /sys/fs/cgroup/freezer/sysdefault/lxc/lxc-test/tasks |
| | 295 | 16 16 80 /sys/fs/cgroup/memory/sysdefault/lxc/lxc-test/tasks |
| | 296 | 16 16 80 /sys/fs/cgroup/devices/sysdefault/lxc/lxc-test/tasks |
| | 297 | 16 16 80 /sys/fs/cgroup/cpuacct/sysdefault/lxc/lxc-test/tasks |
| | 298 | 16 16 80 /sys/fs/cgroup/cpu/sysdefault/lxc/lxc-test/tasks |
| | 299 | }}} |
| | 300 | * $ cat /sys/fs/cgroup/freezer/sysdefault/lxc/lxc-test/tasks |
| | 301 | {{{ |
| | 302 | 1296 |
| | 303 | 1390 |
| | 304 | 1434 |
| | 305 | 1461 |
| | 306 | 1470 |
| | 307 | 1471 |
| | 308 | 1473 |
| | 309 | 1474 |
| | 310 | 1502 |
| | 311 | 1524 |
| | 312 | 1552 |
| | 313 | 1562 |
| | 314 | 1563 |
| | 315 | 1566 |
| | 316 | 1580 |
| | 317 | 1582 |
| | 318 | }}} |
| | 319 | |