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envvars.go
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envvars.go
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// Unless explicitly stated otherwise all files in this repository are licensed
// under the Apache License Version 2.0.
// This product includes software developed at Datadog (https://www.datadoghq.com/).
// Copyright 2016-present Datadog, Inc.
package flare
import (
"bytes"
"fmt"
"os"
"strings"
"github.com/DataDog/datadog-agent/pkg/config"
)
var allowedEnvvarNames = []string{
// Docker client
"DOCKER_API_VERSION",
"DOCKER_CONFIG",
"DOCKER_CERT_PATH",
"DOCKER_HOST",
"DOCKER_TLS_VERIFY",
// HOST vars used in containerized agent
"HOST_ETC",
"HOST_PROC",
"HOST_ROOT",
// Proxy settings
"HTTP_PROXY",
"HTTPS_PROXY",
"NO_PROXY",
"DD_PROXY_HTTP",
"DD_PROXY_HTTPS",
"DD_PROXY_NO_PROXY",
// Go runtime
"GOGC",
"GODEBUG",
"GOMAXPROCS",
"GOTRACEBACK",
// Trace agent
"DD_APM_ENABLED",
"DD_APM_NON_LOCAL_TRAFFIC",
"DD_RECEIVER_PORT", // deprecated
"DD_IGNORE_RESOURCE", // deprecated
"DD_APM_DD_URL",
"DD_APM_ANALYZED_SPANS",
"DD_CONNECTION_LIMIT", // deprecated
"DD_APM_CONNECTION_LIMIT",
"DD_APM_ENV",
"DD_APM_RECEIVER_PORT",
"DD_APM_IGNORE_RESOURCES",
"DD_MAX_EPS ", // deprecated
"DD_APM_MAX_EPS",
"DD_APM_TPS", //deprecated
"DD_APM_MAX_TPS",
"DD_APM_ERROR_TPS",
"DD_APM_ENABLE_RARE_SAMPLER",
"DD_APM_DISABLE_RARE_SAMPLER", // deprecated
"DD_APM_MAX_REMOTE_TPS",
"DD_APM_MAX_MEMORY",
"DD_APM_MAX_CPU_PERCENT",
"DD_APM_FEATURES",
"DD_APM_RECEIVER_SOCKET",
"DD_APM_REPLACE_TAGS",
"DD_APM_PROFILING_DD_URL",
"DD_APM_WINDOWS_PIPE_BUFFER_SIZE",
"DD_APM_REMOTE_TAGGER",
"DD_APM_PEER_SERVICE_AGGREGATION",
"DD_APM_COMPUTE_STATS_BY_SPAN_KIND",
"DD_APM_PEER_TAGS_AGGREGATION",
"DD_APM_PEER_TAGS",
"DD_APM_MAX_CATALOG_SERVICES",
"DD_APM_RECEIVER_TIMEOUT",
"DD_APM_MAX_PAYLOAD_SIZE",
"DD_APM_LOG_FILE",
"DD_APM_CONNECTION_RESET_INTERVAL",
"DD_APM_WINDOWS_PIPE_NAME",
"DD_APM_SYNC_FLUSHING",
"DD_APM_FILTER_TAGS_REQUIRE",
"DD_APM_FILTER_TAGS_REJECT",
"DD_APM_INTERNAL_PROFILING_ENABLED",
"DD_APM_DEBUGGER_DD_URL",
"DD_APM_SYMDB_DD_URL",
"DD_APM_OBFUSCATION_CREDIT_CARDS_ENABLED",
"DD_APM_OBFUSCATION_CREDIT_CARDS_LUHN",
"DD_APM_OBFUSCATION_ELASTICSEARCH_ENABLED",
"DD_APM_OBFUSCATION_ELASTICSEARCH_KEEP_VALUES",
"DD_APM_OBFUSCATION_ELASTICSEARCH_OBFUSCATE_SQL_VALUES",
"DD_APM_OBFUSCATION_HTTP_REMOVE_QUERY_STRING",
"DD_APM_OBFUSCATION_HTTP_REMOVE_PATHS_WITH_DIGITS",
"DD_APM_OBFUSCATION_MEMCACHED_ENABLED",
"DD_APM_OBFUSCATION_MEMCACHED_KEEP_COMMAND",
"DD_APM_OBFUSCATION_MONGODB_ENABLED",
"DD_APM_OBFUSCATION_MONGODB_KEEP_VALUES",
"DD_APM_OBFUSCATION_MONGODB_OBFUSCATE_SQL_VALUES",
"DD_APM_OBFUSCATION_REDIS_ENABLED",
"DD_APM_OBFUSCATION_REDIS_REMOVE_ALL_ARGS",
"DD_APM_OBFUSCATION_REMOVE_STACK_TRACES",
"DD_APM_OBFUSCATION_SQL_EXEC_PLAN_ENABLED",
"DD_APM_OBFUSCATION_SQL_EXEC_PLAN_KEEP_VALUES",
"DD_APM_OBFUSCATION_SQL_EXEC_PLAN_OBFUSCATE_SQL_VALUES",
"DD_APM_OBFUSCATION_SQL_EXEC_PLAN_NORMALIZE_ENABLED",
"DD_APM_OBFUSCATION_SQL_EXEC_PLAN_NORMALIZE_KEEP_VALUES",
"DD_APM_OBFUSCATION_SQL_EXEC_PLAN_NORMALIZE_OBFUSCATE_SQL_VALUES",
"DD_APM_DEBUG_PORT",
"DD_APM_INSTRUMENTATION_ENABLED",
"DD_APM_INSTRUMENTATION_ENABLED_NAMESPACES",
"DD_APM_INSTRUMENTATION_DISABLED_NAMESPACES",
// Process agent
"DD_PROCESS_AGENT_URL",
"DD_SCRUB_ARGS",
"DD_CUSTOM_SENSITIVE_WORDS",
"DD_STRIP_PROCESS_ARGS",
"DD_LOGS_STDOUT",
"LOG_LEVEL",
"LOG_TO_CONSOLE",
"DD_COLLECT_DOCKER_NETWORK",
"DD_CONTAINER_BLACKLIST",
"DD_CONTAINER_WHITELIST",
"DD_CONTAINER_CACHE_DURATION",
"DD_SYSTEM_PROBE_ENABLED",
"DD_SYSTEM_PROBE_NETWORK_ENABLED",
// CI
"DD_INSIDE_CI",
// Cluster agent
"CHART_RELEASE_NAME",
"AGENT_DAEMONSET",
"CLUSTER_AGENT_DEPLOYMENT",
}
func getAllowedEnvvars() []string {
allowed := allowedEnvvarNames
allowed = append(allowed, config.Datadog.GetEnvVars()...)
var found []string
for _, envvar := range os.Environ() {
parts := strings.SplitN(envvar, "=", 2)
key := strings.ToUpper(parts[0])
if strings.Contains(key, "_KEY") || strings.Contains(key, "_AUTH_TOKEN") {
// `_key`-suffixed env vars are sensitive: don't track them
// `_auth_token`-suffixed env vars are sensitive: don't track them
continue
}
for _, envName := range allowed {
if key == envName {
found = append(found, envvar)
continue
}
}
}
return found
}
// getEnvVars collects allowed envvars that can affect the agent's
// behaviour while not being handled by viper, in addition to the envvars handled by viper
func getEnvVars() ([]byte, error) {
envvars := getAllowedEnvvars()
var b bytes.Buffer
if len(envvars) > 0 {
fmt.Fprintln(&b, "Found the following envvars:")
for _, envvar := range envvars {
fmt.Fprintln(&b, " - ", envvar)
}
} else {
fmt.Fprintln(&b, "Found no allowed envvar")
}
return b.Bytes(), nil
}