summaryrefslogtreecommitdiffstats
path: root/claim/netdata-claim.sh.in
blob: 9f04de0daa4d92aa05f738236de86e4358aca144 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
#!/usr/bin/env bash
# netdata
# real-time performance and health monitoring, done right!
# (C) 2017 Costa Tsaousis <costa@tsaousis.gr>
# SPDX-License-Identifier: GPL-3.0-or-later

# Exit code: 0 - Success
# Exit code: 1 - Unknown argument
# Exit code: 2 - Problems with claiming working directory
# Exit code: 3 - Missing dependencies
# Exit code: 4 - Failure to connect to endpoint
# Exit code: 5 - The CLI didn't work
# Exit code: 6 - Wrong user
# Exit code: 7 - Unknown HTTP error message
#
# OK: Agent claimed successfully
# HTTP Status code: 204
# Exit code: 0
#
# Unknown HTTP error message
# HTTP Status code: 422
# Exit code: 7
ERROR_KEYS[7]="None"
ERROR_MESSAGES[7]="Unknown HTTP error message"

# Error: The agent id is invalid; it does not fulfill the constraints
# HTTP Status code: 422
# Exit code: 8
ERROR_KEYS[8]="ErrInvalidNodeID"
ERROR_MESSAGES[8]="invalid node id"

# Error: The agent hostname is invalid; it does not fulfill the constraints
# HTTP Status code: 422
# Exit code: 9
ERROR_KEYS[9]="ErrInvalidNodeName"
ERROR_MESSAGES[9]="invalid node name"

# Error: At least one of the given rooms ids is invalid; it does not fulfill the constraints
# HTTP Status code: 422
# Exit code: 10
ERROR_KEYS[10]="ErrInvalidRoomID"
ERROR_MESSAGES[10]="invalid room id"

# Error: Invalid public key; the public key is empty or not present
# HTTP Status code: 422
# Exit code: 11
ERROR_KEYS[11]="ErrInvalidPublicKey"
ERROR_MESSAGES[11]="invalid public key"
#
# Error: Expired, missing or invalid token
# HTTP Status code: 403
# Exit code: 12
ERROR_KEYS[12]="ErrForbidden"
ERROR_MESSAGES[12]="token expired/token not found/invalid token"

# Error: Duplicate agent id; an agent with the same id is already registered in the cloud
# HTTP Status code: 409
# Exit code: 13
ERROR_KEYS[13]="ErrAlreadyClaimed"
ERROR_MESSAGES[13]="already claimed"

# Error: The node claiming process is still in progress.
# HTTP Status code: 102
# Exit code: 14
ERROR_KEYS[14]="ErrProcessingClaim"
ERROR_MESSAGES[14]="processing claiming"

# Error: Internal server error. Any other unexpected error (DB problems, etc.)
# HTTP Status code: 500
# Exit code: 15
ERROR_KEYS[15]="ErrInternalServerError"
ERROR_MESSAGES[15]="Internal Server Error"

# Error: There was a timeout processing the claim.
# HTTP Status code: 504
# Exit code: 16
ERROR_KEYS[16]="ErrGatewayTimeout"
ERROR_MESSAGES[16]="Gateway Timeout"

# Error: The service cannot handle the claiming request at this time.
# HTTP Status code: 503
# Exit code: 17
ERROR_KEYS[17]="ErrServiceUnavailable"
ERROR_MESSAGES[17]="Service Unavailable"

# Exit code: 18 - Agent unique id is not generated yet.

NETDATA_RUNNING=1

get_config_value() {
    conf_file="${1}"
    section="${2}"
    key_name="${3}"
    if [ "${NETDATA_RUNNING}" -eq 1 ]; then
        config_result=$(@sbindir_POST@/netdatacli 2>/dev/null read-config "$conf_file|$section|$key_name"; exit $?)
        result="$?"
        if [ "${result}" -ne 0 ]; then
            echo >&2 "Unable to communicate with Netdata daemon, querying config from disk instead."
            NETDATA_RUNNING=0
        fi
    fi
    if [ "${NETDATA_RUNNING}" -eq 0 ]; then
        config_result=$(@sbindir_POST@/netdata 2>/dev/null -W get2 "$conf_file" "$section" "$key_name" unknown_default)
    fi
    echo "$config_result"
}
if command -v curl >/dev/null 2>&1 ; then
        URLTOOL="curl"
elif command -v wget >/dev/null 2>&1 ; then
        URLTOOL="wget"
else
        echo >&2 "I need curl or wget to proceed, but neither is available on this system."
        exit 3
fi
if ! command -v openssl >/dev/null 2>&1 ; then
        echo >&2 "I need openssl to proceed, but it is not available on this system."
        exit 3
fi

# shellcheck disable=SC2050
if [ "@enable_cloud_POST@" = "no" ]; then
    echo >&2 "This agent was built with --disable-cloud and cannot be claimed"
    exit 3
fi
# shellcheck disable=SC2050
if [ "@enable_aclk_POST@" != "yes" ]; then
    echo >&2 "This agent was built without the dependencies for Cloud and cannot be claimed"
    exit 3
fi

# -----------------------------------------------------------------------------
# defaults to allow running this script by hand

[ -z "${NETDATA_VARLIB_DIR}" ] && NETDATA_VARLIB_DIR="@varlibdir_POST@"
MACHINE_GUID_FILE="@registrydir_POST@/netdata.public.unique.id"
CLAIMING_DIR="${NETDATA_VARLIB_DIR}/cloud.d"
TOKEN="unknown"
URL_BASE=$(get_config_value cloud global "cloud base url")
[ -z "$URL_BASE" ] && URL_BASE="https://app.netdata.cloud"  # Cover post-install with --dont-start
ID="unknown"
ROOMS=""
[ -z "$HOSTNAME" ] && HOSTNAME=$(hostname)
CLOUD_CERTIFICATE_FILE="${CLAIMING_DIR}/cloud_fullchain.pem"
VERBOSE=0
INSECURE=0
RELOAD=1
NETDATA_USER=$(get_config_value netdata global "run as user")
[ -z "$EUID" ] && EUID="$(id -u)"


gen_id() {
    local id

    if command -v uuidgen > /dev/null 2>&1; then
        id="$(uuidgen)"
    elif [ -r /proc/sys/kernel/random/uuid ]; then
        id="$(cat /proc/sys/kernel/random/uuid)"
    else
        echo >&2 "Unable to generate machine ID."
        exit 18
    fi

    if [ "${id}" = "8a795b0c-2311-11e6-8563-000c295076a6" ] || [ "${id}" = "4aed1458-1c3e-11e6-a53f-000c290fc8f5" ]; then
        gen_id
    else
        echo "${id}"
    fi
}

# get the MACHINE_GUID by default
if [ -r "${MACHINE_GUID_FILE}" ]; then
        ID="$(cat "${MACHINE_GUID_FILE}")"
        MGUID=$ID
elif [ -f "${MACHINE_GUID_FILE}" ]; then
        echo >&2 "netdata.public.unique.id is not readable. Please make sure you have rights to read it (Filename: ${MACHINE_GUID_FILE})."
        exit 18
else
        if mkdir -p "${MACHINE_GUID_FILE%/*}" && /bin/echo -n "$(gen_id)" > "${MACHINE_GUID_FILE}"; then
                ID="$(cat "${MACHINE_GUID_FILE}")"
                MGUID=$ID
        else
                echo >&2 "Failed to write new machine GUID. Please make sure you have rights to write to ${MACHINE_GUID_FILE}."
                exit 18
        fi
fi

# get token from file
if [ -r "${CLAIMING_DIR}/token" ]; then
        TOKEN="$(cat "${CLAIMING_DIR}/token")"
fi

# get rooms from file
if [ -r "${CLAIMING_DIR}/rooms" ]; then
        ROOMS="$(cat "${CLAIMING_DIR}/rooms")"
fi

for arg in "$@"
do
        case $arg in
                -token=*) TOKEN=${arg:7} ;;
                -url=*) [ -n "${arg:5}" ] && URL_BASE=${arg:5} ;;
                -id=*) ID=${arg:4} ;;
                -rooms=*) ROOMS=${arg:7} ;;
                -hostname=*) HOSTNAME=${arg:10} ;;
                -verbose) VERBOSE=1 ;;
                -insecure) INSECURE=1 ;;
                -proxy=*) PROXY=${arg:7} ;;
                -noproxy) NOPROXY=yes ;;
                -noreload) RELOAD=0 ;;
                -user=*) NETDATA_USER=${arg:6} ;;
                -daemon-not-running) NETDATA_RUNNING=0 ;;
                *)  echo >&2 "Unknown argument ${arg}"
                    exit 1 ;;
        esac
        shift 1
done

if [ "$EUID" != "0" ] && [ "$(whoami)" != "$NETDATA_USER" ]; then
    echo >&2 "This script must be run by the $NETDATA_USER user account"
    exit 6
fi

# if curl not installed give warning SOCKS can't be used
if [[ "${URLTOOL}" != "curl" && "${PROXY:0:5}" = socks ]] ; then
        echo >&2 "wget doesn't support SOCKS. Please install curl or disable SOCKS proxy."
        exit 1
fi

echo >&2 "Token: ****************"
echo >&2 "Base URL: $URL_BASE"
echo >&2 "Id: $ID"
echo >&2 "Rooms: $ROOMS"
echo >&2 "Hostname: $HOSTNAME"
echo >&2 "Proxy: $PROXY"
echo >&2 "Netdata user: $NETDATA_USER"

# create the claiming directory for this user
if [ ! -d "${CLAIMING_DIR}" ] ; then
        mkdir -p "${CLAIMING_DIR}" && chmod 0770 "${CLAIMING_DIR}"
# shellcheck disable=SC2181
        if [ $? -ne 0 ] ; then
                echo >&2 "Failed to create claiming working directory ${CLAIMING_DIR}"
                exit 2
        fi
fi
if [ ! -w "${CLAIMING_DIR}" ] ; then
        echo >&2 "No write permission in claiming working directory ${CLAIMING_DIR}"
        exit 2
fi

if [ ! -f "${CLAIMING_DIR}/private.pem" ] ; then
        echo >&2 "Generating private/public key for the first time."
        if ! openssl genrsa -out "${CLAIMING_DIR}/private.pem" 2048 ; then
                echo >&2 "Failed to generate private/public key pair."
                exit 2
        fi
fi
if [ ! -f "${CLAIMING_DIR}/public.pem" ] ; then
        echo >&2 "Extracting public key from private key."
        if ! openssl rsa -in "${CLAIMING_DIR}/private.pem" -outform PEM -pubout -out "${CLAIMING_DIR}/public.pem" ; then
                echo >&2 "Failed to extract public key."
                exit 2
        fi
fi

TARGET_URL="${URL_BASE%/}/api/v1/spaces/nodes/${ID}"
# shellcheck disable=SC2002
KEY=$(cat "${CLAIMING_DIR}/public.pem" | tr '\n' '!' | sed -e 's/!/\\n/g')
# shellcheck disable=SC2001
[ -n "$ROOMS" ] && ROOMS=\"$(echo "$ROOMS" | sed s'/,/", "/g')\"

cat > "${CLAIMING_DIR}/tmpin.txt" <<EMBED_JSON
{
    "node": {
        "id": "$ID",
        "hostname": "$HOSTNAME"
    },
    "token": "$TOKEN",
    "rooms" : [ $ROOMS ],
    "publicKey" : "$KEY",
    "mGUID" : "$MGUID"
}
EMBED_JSON

if [ "${VERBOSE}" == 1 ] ; then
    echo "Request to server:"
    cat "${CLAIMING_DIR}/tmpin.txt"
fi


if [ "${URLTOOL}" = "curl" ] ; then
        URLCOMMAND="curl --connect-timeout 30 --retry 0 -s -i -X PUT -d \"@${CLAIMING_DIR}/tmpin.txt\""
        if [ "${NOPROXY}" = "yes" ] ; then
                URLCOMMAND="${URLCOMMAND} -x \"\""
        elif [ -n "${PROXY}" ] ; then
                URLCOMMAND="${URLCOMMAND} -x \"${PROXY}\""
        fi
else
        URLCOMMAND="wget -T 15 -O -  -q --save-headers --content-on-error=on --method=PUT \
        --body-file=\"${CLAIMING_DIR}/tmpin.txt\""
        if [ "${NOPROXY}" = "yes" ] ; then
                URLCOMMAND="${URLCOMMAND} --no-proxy"
        elif [ "${PROXY:0:4}" = http ] ; then
                URLCOMMAND="export http_proxy=${PROXY}; ${URLCOMMAND}"
        fi
fi

if [ "${INSECURE}" == 1 ] ; then
    if [ "${URLTOOL}" = "curl" ] ; then
        URLCOMMAND="${URLCOMMAND} --insecure"
    else
        URLCOMMAND="${URLCOMMAND} --no-check-certificate"
    fi
fi

if [ -r "${CLOUD_CERTIFICATE_FILE}" ] ; then
        if [ "${URLTOOL}" = "curl" ] ; then
                URLCOMMAND="${URLCOMMAND} --cacert \"${CLOUD_CERTIFICATE_FILE}\""
        else
                URLCOMMAND="${URLCOMMAND} --ca-certificate \"${CLOUD_CERTIFICATE_FILE}\""
        fi
fi

if [ "${VERBOSE}" == 1 ]; then
    echo "${URLCOMMAND} \"${TARGET_URL}\""
fi

attempt_contact () {
        eval "${URLCOMMAND} \"${TARGET_URL}\"" >"${CLAIMING_DIR}/tmpout.txt"
        URLCOMMAND_EXIT_CODE=$?
        if [ "${URLTOOL}" = "wget" ] && [ "${URLCOMMAND_EXIT_CODE}" -eq 8 ] ; then
        # We consider the server issuing an error response a successful attempt at communicating
                URLCOMMAND_EXIT_CODE=0
        fi

        # Check if URLCOMMAND connected and received reply
        if [ "${URLCOMMAND_EXIT_CODE}" -ne 0 ] ; then
                echo >&2 "Failed to connect to ${URL_BASE}, return code ${URLCOMMAND_EXIT_CODE}"
                rm -f "${CLAIMING_DIR}/tmpout.txt"
                return 4
        fi

        if [ "${VERBOSE}" == 1 ] ; then
            echo "Response from server:"
            cat "${CLAIMING_DIR}/tmpout.txt"
        fi

        return 0
}

for i in {1..3}
do
        if attempt_contact ; then
                echo "Connection attempt $i successful"
                break
        fi
        echo "Connection attempt $i failed. Retry in ${i}s."
        if [ "$i" -eq 5 ] ; then
                rm -f "${CLAIMING_DIR}/tmpin.txt"
                exit 4
        fi
        sleep "$i"
done

rm -f "${CLAIMING_DIR}/tmpin.txt"

ERROR_KEY=$(grep "\"errorMsgKey\":" "${CLAIMING_DIR}/tmpout.txt" | awk -F "errorMsgKey\":\"" '{print $2}' | awk -F "\"" '{print $1}')
case ${ERROR_KEY} in
        "ErrInvalidNodeID") EXIT_CODE=8 ;;
        "ErrInvalidNodeName") EXIT_CODE=9 ;;
        "ErrInvalidRoomID") EXIT_CODE=10 ;;
        "ErrInvalidPublicKey") EXIT_CODE=11 ;;
        "ErrForbidden") EXIT_CODE=12 ;;
        "ErrAlreadyClaimed") EXIT_CODE=13 ;;
        "ErrProcessingClaim") EXIT_CODE=14 ;;
        "ErrInternalServerError") EXIT_CODE=15 ;;
        "ErrGatewayTimeout") EXIT_CODE=16 ;;
        "ErrServiceUnavailable") EXIT_CODE=17 ;;
        *) EXIT_CODE=7 ;;
esac

HTTP_STATUS_CODE=$(grep "HTTP" "${CLAIMING_DIR}/tmpout.txt" | tail -1 | awk -F " " '{print $2}')
if [ "${HTTP_STATUS_CODE}" = "204" ] ; then
        EXIT_CODE=0
fi

if [ "${HTTP_STATUS_CODE}" = "204" ] || [ "${ERROR_KEY}" = "ErrAlreadyClaimed" ] ; then
        rm -f "${CLAIMING_DIR}/tmpout.txt"
        if [ "${HTTP_STATUS_CODE}" = "204" ] ; then
                echo -n "${ID}" >"${CLAIMING_DIR}/claimed_id" || (echo >&2 "Claiming failed"; set -e; exit 2)
        fi
        rm -f "${CLAIMING_DIR}/token" || (echo >&2 "Claiming failed"; set -e; exit 2)

        # Rewrite the cloud.conf on the disk
        cat > "$CLAIMING_DIR/cloud.conf" <<HERE_DOC
[global]
  enabled = yes
  cloud base url = $URL_BASE
HERE_DOC
        if [ "$EUID" == "0" ]; then
            chown -R "${NETDATA_USER}:${NETDATA_USER}" ${CLAIMING_DIR} || (echo >&2 "Claiming failed"; set -e; exit 2)
        fi
        if [ "${RELOAD}" == "0" ] ; then
            exit $EXIT_CODE
        fi

        if [ -z "${PROXY}" ]; then
           PROXYMSG=""
        else
           PROXYMSG="You have attempted to claim this node through a proxy - please update your the proxy setting in your netdata.conf to ${PROXY}. "
        fi
        # Update cloud.conf in the agent memory
        @sbindir_POST@/netdatacli write-config 'cloud|global|enabled|yes' && \
        @sbindir_POST@/netdatacli write-config "cloud|global|cloud base url|$URL_BASE" && \
        @sbindir_POST@/netdatacli reload-claiming-state && \
        if [ "${HTTP_STATUS_CODE}" = "204" ] ; then
                echo >&2 "${PROXYMSG}Node was successfully claimed."
        else
                echo >&2 "The agent cloud base url is set to the url provided."
                echo >&2 "The cloud may have different credentials already registered for this agent ID and it cannot be reclaimed under different credentials for security reasons. If you are unable to connect use -id=\$(uuidgen) to overwrite this agent ID with a fresh value if the original credentials cannot be restored."
                echo >&2 "${PROXYMSG}Failed to claim node with the following error message:\"${ERROR_MESSAGES[$EXIT_CODE]}\""
        fi && exit $EXIT_CODE

        if [ "${ERROR_KEY}" = "ErrAlreadyClaimed" ] ; then
                echo >&2 "The cloud may have different credentials already registered for this agent ID and it cannot be reclaimed under different credentials for security reasons. If you are unable to connect use -id=\$(uuidgen) to overwrite this agent ID with a fresh value if the original credentials cannot be restored."
                echo >&2 "${PROXYMSG}Failed to claim node with the following error message:\"${ERROR_MESSAGES[$EXIT_CODE]}\""
                exit $EXIT_CODE
        fi
        echo >&2 "${PROXYMSG}The claim was successful but the agent could not be notified ($?)- it requires a restart to connect to the cloud."
        [ "$NETDATA_RUNNING" -eq 0 ] && exit 0 || exit 5
fi

echo >&2 "Failed to claim node with the following error message:\"${ERROR_MESSAGES[$EXIT_CODE]}\""
if [ "${VERBOSE}" == 1 ]; then
    echo >&2 "Error key was:\"${ERROR_KEYS[$EXIT_CODE]}\""
fi
rm -f "${CLAIMING_DIR}/tmpout.txt"
exit $EXIT_CODE